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e-book Stuff Preparation for Paper and Paperboard Making

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Agglomerates formed in this way were reported to be retained effectively even in the absence of retention aids. Such charged areas would be expected to interact strongly with charged areas of other solids within the suspension. The usual explanation for strength benefits resulting from filler agglomeration is that there is a reduction in the effective surface area of mineral in the system. Thus, based on the analysis of Beazley and Petereit , one would expect less covering up of potential inter-fiber contact area. In addition, chemically-agglomerated clusters of filler would be soft in comparison to fused mineral clusters of similar size.

In addition, the non-abrasive nature of chemically agglomerated suspensions of fine filler particles makes it practical to consider the use of agglomerates that are roughly a factor of ten larger than typical PCC particles. Illustration of how a deformable agglomerate is expected to minimize the bracing effect. Some other reported benefits of filler agglomeration may be attributed to a reduction in the effective surface area of the mineral additive. Gavelin reported substantial benefits, in terms of retention of either clay, calcium carbonate, or mica, following their coflocculation with cellulosic fines obtained by fractionating bleached chemithermomechanical BCTMP pulp.

Follow-up work showed that the coflocculation procedure benefited such properties as the drainage rate, opacity, and printing characteristics Gavelin Also, the fact that additional retention aid was not needed to retain the filler implies that more uniform, less flocculated paper may be achievable. Similarly, Rahman reported substantial savings in bentonite dosage when a microparticle treatment was used to coflocculate filler with fiber fines, rather than applying the microparticle treatment to the whole furnish.

Although the flocculating ability of cationic starch does not match that of high-mass acrylamide products, various studies have shown cationic starch to be effective for agglomeration of fillers. Further confirmation of the strength benefits of the same treatment procedures were published Mabee and Harvey ; Mabee Dosing of the chemicals immediately before sheet preparation gave the best filler retention.

Thus, each PCC particle or group of particles is coated with its own supply of bonding agent. In all of these cited cases, although it is likely that addition of a polysaccharide material at the mineral surface was beneficial to bonding in the resulting paper, it is likely that at least part of the benefits were attributable to filler agglomeration, as discussed earlier.

Because the paper already has been formed at that point, none of the mineral is able to interrupt fiber-to-fiber bonding. Laufmann and Gisella found surprisingly that the filler added to the paper surface became uniformly distributed across the thickness dimension of the paper. Air permeability was decreased, which is consistent with a mechanism in which the mineral occupied spaces that previously had been air-filled. Some of the commonly used additives include cationic starch, acrylamide copolymers, and guar gum. This final section of the chapter will emphasize some special issues and strategies that have arisen in the context of increased filler levels.

First it is perhaps important to dispel the notion that first-pass retention poses an insurmountable barrier to the amount of filler that can be incorporated into a sheet of paper. Strength and caliper pose the most critical barriers to increased filler levels Bown b. Briefly stated, two of the key ways that papermakers have attempted to deal with the issue of maintaining caliper i.

The space-filling nature of scalenohedral PCC, calcined clay, and to some extent blocky fillers such as chalk already have been covered in earlier parts of this chapter see, for instance Bown Moberg a,b provides a useful analysis of opportunities to use bulky chemithermomechanical pulp CTMP fibers as part of a strategy for development for highly filled paper grades. The relatively high fiber length of CTMP fibers, in addition to their space-filling nature, make them good candidates for grades that require contributions to both caliper and strength.

Without such treatment the retention of cationic starch was inefficient, and addition levels higher than about 2. It would be reasonable to apply such an additive program in the case of a highly filled sheet. These authors found that a combination of cationic starch and sodium montmorillonite gave higher strength gains, compared to cationic starch alone, making it possible to maintain paper properties at a higher filler level.

Khosravani and Rahmaninia more recently achieved related results with a combination of cationic starch and colloidal silica. Another strategy to compensate for the adverse effect of very high levels of filler on bonding has been to add large quantities of latex binder Kenaga and Moore ; Moore Also it was found that the strengthening effects of cationic starch and latex were additive. Post and Fort claimed a method involving latex addition to the wet end in combination with various other additives.

Apparently the mixture showed potential for strength enhancement; however there also was a lot of undesired production of foam and stickies. Beer and Lee claimed a process in which latex was destabilized with a chemical flocculant in the presence of fibers in order to maximize its effects as a wet-end strength-enhancing additive. Cationic latex also has been found to be effective for highly filled paper, based on lab results Alince Another strategy that has been used to boost strength-enhancement beyond what could be achieved by starch alone has involved oppositely charged combinations of starch and other polymers.

It is worth noting, however, that these same authors achieved even better results when they simply used cationic starch. In closing, there is a rich tradition of innovation in the ways that papermakers have used fillers. Mineral filler use in papermaking continues to be a major undertaking, both in terms of its economic impacts and in terms of the properties imparted to paper and paperboard products. However, in numerous areas there have been recent advances in filler technology, and one can expect there to be further innovations in the years to come.

Some of the most notable innovations in the past have included developments in precipitated calcium carbonate and in optimizing conditions for usage of higher levels of fillers in various paper grades. There is a continuing need for further research related to achieving a more favorable integration of fillers in the paper sheet, including the uniformity of filler distribution and the association of filler particles with cellulosic fines or microfibrillated cellulose.

Opportunities to exploit the favorable attributes of such mineral products as talc, calcium sulfate gypsum , and aragonite fibrillary calcium carbonate deserve research attention. Effects of filler attributes on subsequent operations, such as coating and printing, also are in need of further study. Aaltio, J. Adams, J. DOI: Ain, R. L, and Laleg, M. Alderfer, G. Alince, B. Colloid Interface Sci. Pulp Paper Sci. Paper and Coating Chem. Allan, G. Anderson, K. Anderson, T. Andersson, K. Asselman, T. Atherton, W. Auhorn, W. Baker, C. Minerals in Papermaking — Sci. Bates, J. Bauch, A.

Beazley, K. Beckett, R. Beer, J. Bi, S. Biza, P. Blanco, A. Boardman, D. Bobu, E. Bouffard, S. Bottero, J. Bovin, A. Bown, R. Brecht, W. Breunig, A. Brooks, K. Brouwer, P. Bundy, W. Burgess, M. Burke, D. Burns, N. Carter, R. CEPI Chabot, B. Chamberlain, D.

Chang, S. Chang, Y. Chauhan, V. Chen, H. Chen, X. Chen, Z. Cheng, W. Cho, J. Tappi Kor. Ciobanu, M. Clark, J. Clewell, D. Craig, W. Crawford, R. Curtis, J. Davidson, R. Delgado, H. Deng, Y. Doelle, K. Doiron, B. Drzal, L. Dubois, J. Clay Sci. Dunlop-Jones, N. Eklund, D. Grankulla, Finland. El-Hosseiny, F. Enomae, T. Evans, D. Fairchild, G. Fan, H. Fang, J. Feng, X. Filella, M. Fineman, I. Fuente, E. Gamelas, J. Gaudreault, R. Gavelin, G. Gerischer, G. Giese, R. Giese, T. Gill, R.

Paper Physics Conf. Goodwin, L. Green, H. Gregor-Svetec, D. Grenz, R. Gron, J. Gruber, E. Gussinyer, J. Gussinyer, C. Hagemeyer, R. Han, Y. Hancock, B. Harben, P. Harrison, J. Haslam, J. Hayes, A. Healy, D. Heath, H. Hechler, E. Heermann, M. Heger, W. Hjelt, T. Hodgson, K. Hofmann, H. Horn, D. House, L. Hoyland, R. Hu, Z. Huang, X. Hubbe, M. Huber, O. Huggenberger, L. Hund, R. Husband, J. Im, W. Ivanov, K. Ivanov, I. Iwanow, S. James, M. Jameson, M. R, eds. Jaycock, M. Jennings, B. Johns, R. Johnston, J. Kapoor, S. Keegan, N. Kenaga, D. Kent, H. Khosravani, A.

Kim, S. Kinoshita, N. Klungness, J. Kocman, V. Koenig, J. Koga, Y. Koivunen, K. Konno, H. Koppelman, M. Kramer, K.

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Kwoka, R. Laine, J. Lasmarias, V. Laufmann, M. Lauzon, R. Lee, B. Lee, K. Li, L. Lofton, M. Lohmander, S. Lorusso, M. Mabee, S. Mackie, D. Mahapatra, S. Mather, R. Mather, V. Mathur, V. McKenzie, A. Menashi, J. Middleton, S. Moberg, K. Modgi, S. Mohamadzadeh Saghavaz, K. Moilanen, A. Moore, E. Morris, H. Mueller, K. Murray, H. Nanko, H. Nanri, Y. Narvestad, H. Neck, V. Nevalainen, A. Novak, J. Obbink, R. Olson, R. Ottewill, R.

Page, D. Pang, P. Passaretti, J. Patel, M. Pelton, R. Peng, Y. Polymer Sci. Perng, Y. Phipps, J. Pierre, A. Dispersion Sci. Pleeth, A. Poirier, N. Post, R. Powers, G. Pratt, R. Rae, C. Rahman, L. Rantala, T. Rasteiro, M. P, Ferreira, P.

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Riddell, M. Rioux, P. Robinson, J. Rojas, O. Sain, M. Salminen, L. Sampson, W. Sanders, N. Sang, Y. Schlegel, J. Schwalbe, H. Scallan, A. Scott, W. Sennett, P. Seo, Y. Sha, L. Shen, J. Silenius, P. Slepetys, R. Smaine, L. Smith, M. Sohara, J. Solberg, D. Solomon, D. Song, D. Biomased Mater. Song, S. Stark, H. Stone, J. British Paper and Board Makers Assoc. Strutz, M. Subramanian, R. Swerin, A. Tanaka, A. Tanaka, H.

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  • Velho, J. Voillot, C. Waech, T. Wang, J. Weigl, J. Wielema, T. WOA3 Process for preparing stable dispersions of starch particles. CAA1 Coated printable substrates providing higher print quality and resolution at lower ink usage. EPA1 Hydrophilic comb polyurethane. EPA1 Multilayer structure and method of making the same.

    CNU Aluminized paper coated with ultraviolet light source phosphor layer on surface. CNA Biopolymer based barrier material and method for making th same. CNA Vision-care cultural paper. CNA Fog face release paper and preparation method thereof. CNA Method for making fog face release paper. CNB Coated white-top kraft liner board and manufacturing method thereof. CAC Tissue paper with protruding lotion deposits. WOA1 Method for applying coloured coating slip. EPA1 Method for manufacturing a resin-impregnated decorative paper, and decorative panel. EPA1 Production of high-purity suspensions containing precipitated silicas by electrodialysis.

    EPB1 Triazinnylaminostilbene disulphonic acid mixtures. CNA Method for producing a fibrous material web. CNA Aqueous polymer dispersion made of vinylaromatic compound, conjugated aliphatic diene, and ethylenically unsaturated acid. CNA Film for the lamination of graphic media and production method thereof. CNA Copperplate board coating. CNA Filter paper modifying liquid of polyester filter and preparation method thereof.

    CNA Preparation process for household paper capable of fragrance releasing. CNB Sheets for total heat exchangers. CNB Method for producing temperature-charging artistic shagreen paper. WOA1 Transparent ink-accepting layer. F , it may be necessary to dilute the heptane solution further so that a milliliter aliquot will contain only 0. Note: If you need help accessing information in different file formats, see Instructions for Downloading Viewers and Players. Search FDA. List of Substances Limitations Acetyl peroxide For use only as polymerization catalyst.

    Acrylamide-methacrylic acid-maleic anhydride copolymers containing not more than 0. Acrylamide-[beta]-methacrylyloxyethyltrimethylammonium methyl sulfate copolymer resins containing not more than 10 molar percent of [beta]-methacrylyloxyethyltrimethylammonium methyl sulfate and containing less than 0. Acrylic acid, sodium salt copolymer with polyethyleneglycol allyl ether CAS Reg. Acrylic acid copolymer with 2-acrylamidomethylpropane-sulfonic acid CAS Reg. C as determined by LV-series Brookfield viscometer or equivalent using a No.

    Acrylonitrile polymer, reaction product with ethylenediamine sulfate having a nitrogen content of The finished resin in a 24 percent by weight aqueous solution has a viscosity of 1,, centipoises at 25 deg. Acrylonitrile polymer with styrene, reaction product with ethylenediamine acetate, having a nitrogen content of 7. For use only as a sizing material applied after the sheet-forming operation in the manufacture of paper and paperboard in such amount that the paper and paperboard will contain the additive at a level not in excess of 0.

    For use only as a sizing material applied prior to the sheet-forming operation in the manufacture of paper and paperboard in such amount that the paper and paperboard will contain the additive at a level not in excess of 1. In coatings for paper and paperboard with food of Type VIII described in table I of paragraph c of this section under conditions of use A through H described in table 2 of paragraph c of this section.

    The suspension is used as a component of coatings for paper and paperboard under conditions of use described in paragraph c of this section, table 2, conditions of use E through G. Ammonium zirconium citrate CAS Reg. Anionic polyurethane, produced by reacting the preliminary adduct formed from the reaction of glyceryl monostearate and 2,4-toluenediisocyanate with not more than 10 mole percent N-methyldiethanolamine and not less than 90 mole percent dimethylolpropionic acid.

    The final product is a 15 to 20 percent by weight aqueous solution, having a Brookfield viscosity of 25 to centipoises at 24 deg. C 75 deg. F For use only as a surface sizing agent at a level not to exceed 0. Aromatic petroleum hydrocarbon resin, hydrogenated CAS Reg. C deg. F , and the subsequent catalytic reduction of the resulting aromatic petroleum hydrocarbon resin.

    The resin meets the following specifications: softening point 85 deg. For use only as modifiers in wax polymer blend coatings for paper and paperboard at a level not to exceed 50 weight-percent of the coating solids under conditions of use E, F, and G identified in table 2 of paragraph c of this section. Azo-bisisobutyronitrile For use only as polymerization catalyst. Benzoyl peroxide Do. N,N-Bis 2-hydroxyethyl alkyl CC18 amide For use only as an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet forming operation.

    Bis methoxymethyl tetrakis-[ octadecyloxy -methyl]melamine resins having a 5. As a water repellant employed prior to the sheet-forming operation in the manufacture of paper and paperboard in such amount that the finished paper and paperboard will contain the additive at a level not in excess of 1. The finished paper and paperboard will be used in contact with nonalcoholic foods only.

    As a water repellant employed after the sheet-forming operation in the manufacture of paper and paperboard in such amount that the finished paper and paperboard will contain the additive at a level not to exceed 1. Butanedioic acid, sulfo-1,4-di- C9-C11 alkyl ester, ammonium salt also known as butanedioic acid, sulfo-1,4-diisodecyl ester, ammonium salt [CAS Reg. For use as a surface active agent in package coating inks at levels not to exceed 3 percent by weight of the coating ink. Calcium isostearate For use only with n-decyl alcohol as a stabilizing material for aqueous calcium stearate dispersions intended for use as components of coatings for paper and paperboard.

    Carrageenan and salts of carrageenan as described in Cobaltous acetate For use only as polymerization catalyst. Cumene hydroperoxide Do. Cyanoguanidine For use only: 1. As a modifier for amino resins. As a fluidizing agent in starch and protein coatings for paper and paperboard. Dialdehyde locust bean gum Do. C 72 deg. Diallyldimethylammonium chloride with acrylamide CAS Reg. The copolymer is produced by copolymerizing diallyldimethylammonium chloride with acrylamide in a weight ratio of so that the finished resin in a 1 percent by weight aqueous solution active polymer has a viscosity of more than 22 centipoises at 22 deg.

    Diallyldiethylammonium chloride polymer with acrylamide, and diallyldimethylammonium chloride, produced by copolymerizing acrylamide, diallyldiethylammonium chloride, and diallyldimethylammonium chloride, respectively, in the following weight ratios and having viscosities determined at 22 deg. Weight ratio: The finished resin in a 1 percent by weight aqueous solution has a minimum viscosity of 22 centipoises For use only as a retention aid employed prior to the sheet-forming operation in the manufacture of paper and paperboard and limited to use at a level not to exceed 0.

    The finished resin in a 0. Diallyldiethylammonium chloride polymer with acrylamide, potassium acrylate, and diallyldimethylammonium chloride. The polymer is produced by copolymerizing either: 1 acrylamide, diallyldiethylammonium chloride, and diallyldimethylammonium chloride in a weight ratio of Diallyldimethylammonium chloride polymer with acrylamide, reaction product with glyoxal, produced by copolymerizing not less than 90 weight percent of acrylamide and not more than 10 weight percent of diallyldimethylammonium chloride, which is then cross-linked with not more than 30 weight percent of glyoxal, such that a 10 percent aqueous solution has a minimum viscosity of 25 centipoises at 25 deg.

    For use as a preservative at a level not to exceed parts per million in coating formulations and in component slurries and emulsions, used in the production of paper and paperboard and coatings for paper and paperboard. Diethanolamine For use only: 1. As an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet-forming operation. In paper mill boilers. Diethyl 2-hydroxyethyl methylammonium methyl sulfate, acrylate, polymer with acrylamide, chemical abstract service registry No.

    Kjeldahl, dry basis , and a residual acrylamide monomer content of not more than 0. The finished polymer in a 1 pct. Diethylenetriamine For use only as a modifier for amino resins. N,N-Diisopropanolamide of tallow fatty acids For use only as an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet-forming operation. Dimethylamine-epichlorohydrin copolymer in which not more than 5 mole-percent of dimethylamine may be replaced by an equimolar amount of ethylenediamine and in which the ratio of total amine to epichlorohydrin does not exceed The nitrogen content of the copolymer shall be 9.

    As a retention aid employed before the sheet-forming operation in the manufacture of paper and paperboard and limited to use at a level not to exceed 1 percent by weight of the finished paper and paperboard. At the size press at a level not to exceed 0. N-[ Dimethylamino methyl]-acrylamide polymer with acrylamide and styrene having a nitrogen content of not more than N,N'-Dioleoylethylenediamine Diphenylamine For use only as an antioxidant for fatty based coating adjuvants provided it is used at a level not to exceed 0.

    N,N'-Distearoylethylenediamine n-Dodecylguanidine acetate For use only as an antimicrobial agent in paper and paperboard under the following conditions: 1. For contact only with nonalcoholic food having a pH above 5 and provided it is used at a level not to exceed 0. For use in the outer ply of multiwall paper bags for contact with dry food of Type VIII described in table I of paragraph c of this section and provided it is used at a level of 0.

    Fatty acids derived from animal and vegetable fats and oils and salts of such acids, single or mixed, as follows: Aluminum. Ferric chloride Ferrous ammonium sulfate Fish oil, hydrogenated Fish oil, hydrogenated, potassium salt Furcelleran and salts of furcelleran as described in Guar gum modified by treatment with not more than 25 weight percent of 2,3-epoxypropyltri-methylammonium chloride such that the finished product has a maximum chlorine content of 4.

    F, as determined by RV-series Brookfield viscometer or equivalent using a No. The finished paper and paperboard will be used in contact with aqueous foods under conditions of use B through G as described in table 2 of paragraph c of this section. Hexamethylenetetramine For use only as polymerization cross-linking agent for protein, including casein.

    Hydroquinone and the monomethyl or monoethyl ethers of hydroquinone For use only as an inhibitor for monomers. Hydroxymethyl-5,5-dimethylhydantoin CAS Reg.

    Hydroxypropyl guar gum having a minimum viscosity of 5, centipoises at 25 deg. For use only at a level not to exceed 0. Isopropyl m- and p-cresols thymol derived For use only as an antioxidant for fatty based coating adjuvants provided it is used as a level not to exceed 0.

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    Isopropyl peroxydicarbonate For use only as polymerization catalyst. Japan wax Lanolin Lauryl peroxide For use only as polymerization catalyst. Lauryl sulfate salts: Ammonium. Lecithin, hydroxylated Lignin sulfonate and its calcium, potassium, and sodium salts Maleic anhydride, polymer with ethyl acrylate and vinyl acetate, hydrolyzed CAS Reg. Methacrylic acid-acrylic acid copolymer CAS Reg. N-methyldiallylamine hydrochloride polymer with epichlorohydrin having a nitrogen content of 4.

    Methyl naphthalene sulfonic acid-formaldehyde condensate, sodium salt For use only as an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet-forming operation. Mineral oil, white Mono-, di-, tri- 1-methylphenylethyl -phenol, ethoxylated, sulfated, ammonium salt with an average of 12 to 16 moles of ethylene oxide CAS Reg.

    The finished paper and paperboard will be used in contact with all food types under conditions of use E through G described in table 2 of paragraph c of this section. Mustardseed oil, sulfated, ammonium, potassium, or sodium salt Naphthalene sulfonic acid-formaldehyde condensate, sodium salt For use only as an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet-forming operation.

    Nitrocellulose, Petrolatum Complying with Petroleum asphalt, steam and vacuum refined to meet the following specifications: Softening point 88 deg. C to 93 deg. C not to exceed 0. C, nor to exceed an additional 1. Petroleum wax, synthetic Complying with Phenothiazine For use only as antioxidant in dry rosin size. Phenyl-[beta]-naphthylamine For use only as antioxidant in dry rosin size and limited to use at a level not to exceed 0. Phosphoric acid esters and polyesters and their sodium salts of triethanolamine formed by the reaction of triethanolamine with polyphosphoric acid to produce a mixture of esters having an average nitrogen content of 1.

    Poly[acrylamide-acrylic acid-N- dimethyl-aminomethyl acryl- amide], produced by reacting 2. Poly 2-aminoethyl acrylate nitrate-cohydroxypropyl acrylate produced when one mole of hydroxypropyl acrylate and three moles of acrylic acid are reacted with three moles of ethylenimine and three moles of nitric acid, such that a 35 percent by weight aqueous solution has a minimum viscosity of centipoises at 72 deg. Polyacrolein 1 part -sodium bisulfite 0. Poly[acrylamide-acrylic acid-N- dimethylaminomethyl acrylamide] C. Registry No. Polyamide-epichlorohydrin modified resin produced by reacting adipic acid with diethylene triamine to produce a basic polyamide which is modified by reaction with formic acid and formaldehyde and further reacted with epichlorohydrin in the presence of ammonium hydroxide to form a water-soluble cationic resin having a nitrogen content of percent Kjeldahl, dry basis such that a 35 percent by weight aqueous solution has a minimum viscosity of 75 centipoises at 25 deg.

    C, as determined by Brookfield viscometer using a No. Polyamide-epichlorohydrin water-soluble thermosetting resins [CAS Reg. C, as determined by a Brookfield viscometer using a No. As a retention aid employed prior to the sheet-forming operation in the manufacture of paper and paperboard and limited to use at a level not to exceed 0. The finished paper or paperboard will be used in contact with food only of the types identified in paragraph c of this section, table 1, under types I and IV-B and under conditions of use described in paragraph c of this section, table 2, conditions of use F and G.

    Polyamide-epichlorohydrin water-soluble thermosetting resin CAS Reg. Polyamide-epichlorohydrin water-soluble thermosetting resins prepared by reacting adipic acid, isophthalic acid, itaconic acid or dimethyl glutarate with diethylenetriamine to form a basic polyamide and further reacting the polyamide with one of the following: For use only in the manufacture of paper and paperboard under conditions such that the resins do not exceed 1. Epichlorohydrin and ammonia mixture. Epichlorohydrin and sodium hydrosulfite mixture.

    Polyamidoamine-ethyleneimine-epichlorohydrin resin prepared by reacting hexanedioic acid, N- 2-aminoethyl -1,2-ethanediamine, chloromethyl oxirane, ethyleneimine aziridine , and polyethylene glycol, partly neutralized with sulfuric acid CAS Reg. Polyamidol-epichlorohydrin modified resin produced by reacting glutaric acid dimethyl ester with diethylene-triamine to produce a basic polyamide which is modified by reaction with formaldehyde and further reacted with epicholorohydrin to form a water soluble cationic resin having a nitrogen content of Polyamine-epichlorohydrin resin produced by the reaction of epichlorohydrin with monomethylamine to form a prepolymer and further reaction of this prepolymer with N,N,N',N'-tetramethylethylenediamine such that the finished resin having a nitrogen content of C, as determined by LV-series Brookfield viscometer using a No.

    Polyamine-epichlorohydrin resin produced by the reaction of N,N-dimethyl-1,3-propanediamine with epichlorohydrin and further reacted with sulfuric acid, Chemical Abstracts Service Registry Number [], such that the finished resin has a maximum nitrogen content of The finished resin has a nitrogen content of 5.

    C 68 deg. Polyamine-epichlorohydrin water soluble thermosetting resin prepared by reacting hexamethylenediamine with 1,2-dichloroethane to form a prepolymer and further reacting this prepolymer with epichlorohydrin. This resin is then reacted with nitrilotris methylene-phosphonic acid , pentasodium salt, such that the finished resin has a nitrogen content of 5. Polyamine resin produced by the reaction of 1,2-dichloroethane with bis hexamethylene triamine and higher homologues such that the finished resin has a nitrogen content of Polyaminoamide-epichlorohydrin modified resin produced by reacting adipic acid with diethylenetriamine to produce a polyamide which is modified by reaction with diethylaminopropylamine and further reacted with dichloroethyl ether to form a polyamide intermediate.

    This polyamide intermediate is then reacted with epichlorohydrin such that the finished resins have a nitrogen content of Polybutene, hydrogenated; complying with the identity prescribed under Poly diallyldimethylammonium chloride CAS Reg. C 77 deg. The level of residual monomer is not to exceed 1 percent by weight of the polymer dry basis For use only: 1.

    As a pigment dispersant in coatings at a level not to exceed 3. Poly 1,2-dimethylvinylpyridinium methyl sulfate having a nitrogen content of 5. F as determined by a Brookfield RVT viscometer using a number 3 spindle at 50 rpm or equivalent method For use only as a surface-sizing compound applied after the sheet-forming operation in the manufacture of paper and paperboard and limited to use at levels not to exceed 0.

    Polyethylene, oxidized; complying with the identity prescribed in Polyethyleneamine mixture produced when 1 mole of ethylene dichloride, 1. F, as determined by Brookfield viscometer using a No. Polyethylene glycol dilaurate For use only as an adjuvant employed in the manufacture of paper and paperboard prior to the sheet-forming operation. Polyethylene glycol dioleate Polyethylene glycol esters of coconut oil fatty acids Polyethylene glycol esters of tall oil fatty acids Polyethylene glycol monolaurate Polyethylene glycol monolaurate Polyethylene glycol monooleate Polyethylene glycol monooleate Polyethylene glycol monostearate Polyethylene glycol monostearate Polyethylene glycol 3, monostearate Polyethylenimine, produced by the polymerization of ethylenimine For use only as an adjuvant employed prior to sheet formation in paper-making systems operated at a pH of 4.

    Polymethacrylic acid, sodium salt, having a viscosity in percent-by-weight aqueous solution of centipoises at 25 deg. C, as determined by LV-series Brookfield viscometer or equivalent using a No. Poly[ methylimino 2-hydroxytrimethylene hydrochloride] produced by reaction of molar ratio of methylamine and epichlorohydrin so that a percent aqueous solution at 25 deg.

    C has a Stokes viscosity range of 2. For use only as a retention aid employed prior to the sheet-forming operation in such an amount that finished paper and paperboard will contain the additive at a level not in excess of 1 percent by weight of the dry paper and paperboard. Poly[oxyethylene dimethyliminio ethylene dimethyliminio ethylene dichloride] produced by reacting equimolar quantities of N,N,N,N-tetramethylethylene-diamine and dichlorethyl ether to yield a solution of the solid polymer in distilled water at 25 deg.

    C with a reduced viscosity of not less than 0. The following formula is used for determining reduced viscosity: For use only to improve dry-strength of paper and paperboard and as a retention and drainage aid employed prior to the sheet-forming operation in the manufacture of paper and paperboard and limited to use at a level not to exceed 0. The finished coating will be used only for paper and paperboard that contact food of types VI-A and VI-B of table 1 in paragraph c of this section, and under conditions of use C, D, and E, as described in table 2 in paragraph c of this section, with a maximum hot fill temperature of deg.

    F 94 deg. Silver chloride-coated titanium dioxide For use only as a preservative in polymer latex emulsions at a level not to exceed 2. Sodium carboxymethyl guar gum having a minimum viscosity of 2, centipoises at 25 deg. C after 24 hours as determined by RV-series Brookfield viscometer or equivalent using a No. Sodium dioctyl sulfosuccinate Sodium formaldehyde sulfoxylate For use only as polymerization catalyst. Sodium hypochlorite Sodium N-methyl-N-oleyltaurate For use only as an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet-forming operation.

    Sodium nitrite For use only: 1. At levels not to exceed 0. As an anticorrosion agent at levels not to exceed 0. Sodium persulfate Sodium polyacrylate For use only: 1. As a thickening agent for natural rubber latex coatings, provided it is used at a level not to exceed 2 percent by weight of coating solids. As a pigment dispersant in coatings at a level not to exceed 0.

    Sodium poly isopropenylphosphonate CAS Reg. Sodium zinc potassium polyphosphate CAS Reg. Sperm oil, sulfated, ammonium, potassium, or sodium salt Stannous oleate Stearyllactylic acid and its calcium salt Styrene-butadiene copolymers produced by copolymerizing styrene-butadiene with one or more of the monomers: acrylamide, acrylic acid, fumaric acid, 2-hydroxyethyl acrylate, itaconic acid, methacrylic acid, and N-methylolacrylamide CAS Reg. The finished copolymers shall contain not more than 10 weight percent of total polymer units derived from acrylic acid, fumaric acid, 2-hydroxyethyl acrylate, itaconic acid, and methacrylic acid, and shall contain not more than 3 weight percent of total polymer units derived from N-methylolacrylamide, and shall contain not more than 2 weight percent of polymer units derived from acrylamide.

    Styrene-maleic anhydride copolymer, amidated, ammonium sodium salt; having, in a 25 percent by weight aqueous solution at pH 8. Styrene-maleic anhydride copolymer, sodium salt minimum molecular weight 30, For use only: 1. Under conditions of use F and G described in table 2 of paragraph c of this section for all foods. Tallow Tallow alcohol Tallow alcohol, hydrogenated Tallow fatty acid, hydrogenated Tallow hydrogenated Tallow sulfated, ammonium, potassium, or sodium salt Tetraethylenepentamine For use only as a modifier for amino resins.

    N,N,N', N'-Tetramethylethylenediamine polymer with bis- 2-chloroethyl ether, first reacted with not more than 5 percent by weight 1-chloro-2,3-epoxypropane and then reacted with not more than 5 percent by weight poly acrylic acid such that a 50 percent by weight aqueous solution of the product has a nitrogen content of 4. C as determined by LV series Brookfield viscometer using a No. Tetrasodium N- 1,2-dicarboxyethyl - N - octadecylsulfo-succinamate For use only as an emulsifier in aqueous dispersions of rosin sizes complying with Triethanolamine For use only to adjust pH during the manufacture of amino resins permitted for use as components of paper and paperboard.

    Triethylenetetramine For use only as a modifier for amino resins. Undecafluorocyclohexanemethanol ester mixture of dihydrogen phosphate, compound with 2,2' iminodiethanol ; hydrogen phosphate, compound with 2,2'-iminodiethanol ; and P,P'-dihydrogen pyrophosphate, compound with 2,2'-iminodiethanol ; where the ester mixture has a fluorine content of Viscose rayon fibers Wax, petroleum Complying with Xanthan gum, conforming to the identity and specifications prescribed in Xylene sulfonic acid-formaldehyde condensate, sodium salt For use only as an adjuvant to control pulp absorbency and pitch content in the manufacture of paper and paperboard prior to the sheet-forming operation.

    Zinc formaldehyde sulfoxylate For use only as polymerization catalyst. Zinc octoate Zirconium oxide For use only as a component of waterproof coatings where the zirconium oxide is present at a level not to exceed 1 percent by weight of the dry paper or paperboard fiber and where the zirconium oxide is produced by hydrolysis of zirconium acetate. Acrylic copolymers produced by copolymerizing 2 or more of the acrylate monomers butyl acrylate, ethyl acrylate, ethyl methacrylate, methyl acrylate, methyl methacrylate, and n-propyl methacrylate, or produced by copolymerizing one or more of such acrylate monomers together with one or more of the monomers acrylic acid, acrylonitrile, butadiene, 2-ethyl-hexyl acrylate, fumaric acid, glycidyl methacrylate, n-hexyl-methacrylate, itaconic acid, methacrylic acid, styrene, vinyl acetate, vinyl chloride, and vinylidene chloride.

    The finished copolymers shall contain at least 50 weight percent of polymer units derived from one or more of the monomers butyl acrylate, ethyl acrylate, ethyl methacrylate, methyl acrylate, methyl methacrylate, and n-propyl methacrylate; and shall contain not more than 5 weight percent of total polymer units derived from acrylic acid, fumaric acid, glycidyl methacrylate, n-hexyl methacrylate, itaconic acid, and methacrylic acid.

    The provision limiting the finished acrylic copolymers to not more than 5 units derived from acrylic acid, fumaric acid, glycidyl methacrylate, n-hexyl methacrylate, itaconic acid, and methacrylic acid is not applicable to finished acrylic copolymers used as coating adjuvants at a level not exceeding 2 weight percent of total coating solids Alkyl mono- and disulfonic acids, sodium salts produced from n-alkanes in the range of CC18 with not less than 50 percent CC For use only: 1.

    As emulsifiers for vinylidene chloride copolymer coatings and limited to use at levels not to exceed 2 percent by weight of the coating solids. As emulsifiers for vinylidene chloride copolymer or homopolymer coatings at levels not to exceed a total of 2. Butylbenzyl phthalate Complying with Butyl oleate, sulfated, ammonium, potassium, or sodium salt Butyraldehyde Captan N-trichloromethylmercaptocyclohexene-1, 2-dicarboximide For use only as a mold- and mildew-proofing agent in coatings intended for use in contact with food only of the types identified in paragraph c of this section, table 1, under Type I, II, VI-B, and VIII.

    Castor Oil, polyoxyethylated 42 moles ethylene oxide For use only as an emulsifier in nitrocellulose coatings for paper and paperboard intended for use in contact with food only of the types identified in paragraph c of this section, table 1, under Types IV A, V, VII A, VIII, and IX; and limited to use at a level not to exceed 8 percent by weight of the coating solids.

    As a preservative at a level of 0. As a preservative at a level not to exceed 0. The mixture may contain magnesium nitrate CAS Reg. As an antimicrobial agent for polymer latex emulsions in paper coatings at a level not to exceed 50 parts per million based on isothiazolone active ingredients in the coating formulation. As an antimicrobial agent for finished coating formulations and for additives used in the manufacture of paper and paperboard including fillers, binders, pigment slurries, and sizing solutions at a level not to exceed 25 parts per million based on isothiazolone active ingredients in the coating formulations and additives.