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    • 36. 发明公开
    • WÄSSRIGE ANSCHLÄMMUNGEN VON FEINTEILIGEN FÜLLSTOFFEN, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG ZUR HERSTELLUNG FÜLLSTOFFHALTIGER PAPIERE
    • WÄSSRIGEANSCHLÄMMUNGENVON FEINTEILIGENFÜLLSTOFFEN,VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG ZUR HERSTELLUNGFÜLLSTOFFHALTIGERPAPIERE
    • EP1613703A1
    • 2006-01-11
    • EP04724273.0
    • 2004-03-30
    • BASF Aktiengesellschaft
    • ESSER, AntonBRAIG, VolkerWENDKER, MartinBLUM, RainerBAUMANN, PeterNEUTZNER, JosefDUPUIS, JacquesHÄHNLE, Hans-Joachim
    • C09C3/10C09C1/02
    • C09C1/021C01P2004/61C01P2006/14C09C1/42C09C3/10D21H17/37D21H17/375D21H17/41D21H17/675D21H17/69
    • Aqueous elutriations of fine-particled filling materials which are at least partially coated with polymers and which can be obtained by treating aqueous elutriations of fine-particled filling materials with at least one water-soluble amphoteric copolymer which can be obtained by copolymerization of (a) at least one n-vinylcarboxylic acid amide of formula (III), wherein R1, R2 = H or C1- C6-alkyl, (b) at least one monoethylenically unsaturated carboxylic acid with 3 -8 C atoms per molecule and/or the alkali metal, earth alkali metal or ammonium salts thereof and optionally (c) other monoethylenically unsaturated monomers which are free of nitrile groups, and optionally (d) compounds comprising two ethylenically unsaturated double bonds per molecule, and subsequent partial or full hydrolysis separation of groups CO-R1 from the monomers III polymerized inside the copolymer. The invention also relates to methods for the production of aqueous elutriations and the use thereof as additives to paper material in the production of paper containing filling materials, cardboard containing filling materials or paperboard containing filling materials by dewatering said paper material.
    • 至少部分用聚合物涂覆并且可以通过用至少一种水溶性两性共聚物处理细颗粒状填充材料的含水淘析来获得的细粒填充材料的水相淘析,所述水溶性两性共聚物可以通过共聚合(a) (III)的至少一种n-乙烯基羧酸酰胺,其中R 1,R 2 = H或C 1 -C 6 - 烷基,(b)至少一种每分子具有3 -8个C原子的单烯属不饱和羧酸和/或碱 金属,碱土金属或铵盐以及任选地(c)不含腈基的其它单烯属不饱和单体,和任选地(d)每分子包含两个烯属不饱和双键的化合物,随后部分或完全水解分离基团CO -R1由共聚物内部聚合的单体III得到。 本发明还涉及用于生产含水淘析物的方法以及其作为纸生产中含有填充材料的纸材的添加剂,含有填充材料的纸板或通过使所述纸质材料脱水而含有填充材料的纸板的用途。