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The heterogeneous mixture of polymers and a method of increasing the filler content in the sheet of paper or board with its use (optional)
The heterogeneous mixture of polymers and a method of increasing the filler content in the sheet of paper or board with its use (optional)
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机译:聚合物的非均质混合物以及通过使用增加纸或纸板中填料含量的方法(可选)
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摘要
FIELD: chemistry.;SUBSTANCE: claimed invention relates to a method of obtaining heterogeneous mixture used in the paper industry. Described is the method of manufacturing heterogeneous mixture of polymers, including: (a) introduction into a solution of the first portion of a polymerisation initiator and one or several anionic or cationic monomers, with monomers carrying the same charge; (b) introduction into the solution of the second portion of the polymerisation initiator and one or several non-ionic monomers; (c) introduction of the third portion of the polymerisation initiator and one or several ionic monomers, whose charge is opposite to the charge of monomers from (a); (d) gradual introduction of the fourth portion of polymerisation initiator for a reaction of any remaining monomer with formation of a heterogeneous mixture of polymers; and (e) in case of necessity neutralisation of the obtained heterogeneous mixture of polymers, with anionic monomers being selected from the group, consisting of: (1) acrylic acid, (2) methacrylic acid, (3) styrene sulfonic acid, (4) vinyl sulfonic acid, (5) acrylamido methylpropane sulfonic acid and (6) their mixtures; cationic monomers are selected from the group, which includes: (1) diallyldimethylammonium chloride, (2) acryloylethyl trimethylammonium chloride, (3) methacryloylethyltrimethylammonium chloride, (4) acryloylethyltrimethylammonium sulfate, (5) methacryloyl ethyltrimethylammonium sulfate, (6) acrylamidopropyltrimethylammonium chloride, (7) methacrylamidopropyl trimethylammonium chloride, (8) non-quaternised forms (2)-(7), (9) vinylformamide (further hydrolised into vinylamine) and (10) their mixtures, and non-ionic monomers are selected from the group, consisting of: (1) acrylamide, (2) methacrylamide, (3) N-alkylacrylamide, (4) vinylformamide and (5) their mixtures. Also described is the heterogeneous mixture of polymers, intended for increasing the content of a filling agent in paper or carton, obtained by the method described above. Methods of increasing the content of the filling agent in a paper or carton sheet with application of the said heterogeneous mixture of polymers are described.;EFFECT: increase of the content of an inorganic filling agent in paper with simultaneous preservation of weight, strength and suitability of the final product for processing.;17 cl, 9 tbl, 14 ex
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