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    ACRYLATPOLYMERISATE AUF BASIS VON TERT.BUTYLACRYLAT UND/ODER TERT.-BUTYLMETHACRYLAT
    2.
    发明授权
    ACRYLATPOLYMERISATE AUF BASIS VON TERT.BUTYLACRYLAT UND/ODER TERT.-BUTYLMETHACRYLAT 有权
    丙烯酸酯聚合物基于叔丁酯和/或甲基丙烯酸叔丁酯

    公开(公告)号：EP1335943B1

    公开(公告)日：2005-07-20

    申请号：EP01993637.6

    申请日：2001-11-09

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： DAUSCH, Wilma, M. ,  ZEITZ, Katrin ,  SCHNEIDER, Tanja ,  ANGEL, Maximilian ,  DE POTZOLLI, Bernd ,  WOOD, Claudia

    IPC分类号： C08F220/18 ,  A61K7/06

    CPC分类号： A61Q5/06 ,  A61K8/8188 ,  C08F220/18

    摘要： The invention relates to acrylate polymers comprising a K-value ranging from 10 to 60, which can be obtained by the radical polymerization of: 30 to 99 wt. % of tert-butyl acrylate and/or tert-butyl methacrylate designated as monomer A; 1 to 28 wt. % of acrylic acid and/or methacrylic acid designated as monomer B, and; 0 to 60 wt. % of a radically copolymerizable monomer or of a radically copolymerizable monomer mixture designated as monomer C, whereby at least one of monomers C yields a homopolymer with a glass-transition temperature lower than 30 °C, with the provision that the wt. %'s total 100. The radical polymerization is carried out in the presence of alkane thiols with a C chain length of C 14 to C 22. The invention also relates to acrylate polymers comprising a K-value ranging from 10 to 60, which can be obtained by the radical polymerization of: 30 to 99 wt. % of tert-butyl acrylate and/or tert-butyl methacrylate designated as monomer A; 1 to 28 wt. % of acrylic acid and/or methacrylic acid designated as monomer B, and; 0 to 60 wt. % of a radically copolymerizable monomer or of a radically copolymerizable monomer mixture designated as monomer C, whereby at least one of monomers C yields a homopolymer with a glass-transition temperature lower than 30 °C, with the provision that the wt. %'s total 100. The radical polymerization is carried out in the presence of alkane thiols with a C chain length of C 10 to C 22 followed by a hydrogen peroxide treatment. The invention also relates to the use of these acrylate polymers as film formers as well as to their use in cosmetic preparations.

    VERFAHREN ZUR VERMINDERUNG DER RESTMONOMERENMENGE IN WÄSSRIGEN POLYMERDISPERSIONEN
    3.
    发明授权
    VERFAHREN ZUR VERMINDERUNG DER RESTMONOMERENMENGE IN WÄSSRIGEN POLYMERDISPERSIONEN 有权
    VÄRFAHRENZUR VERMINDERUNG DER RESTMONOMERENMENGE在WÄSSRIGENPOLYMERDISPERSIONEN

    公开(公告)号：EP1117703B1

    公开(公告)日：2004-12-22

    申请号：EP99946020.7

    申请日：1999-08-25

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： WOOD, Claudia ,  BAUMSTARK, Roland

    IPC分类号： C08F6/00

    CPC分类号： C08F6/006

    摘要： The invention relates to a method for reducing the quantity of residual monomers in aqueous dispersions of polymers by re-treatment with an initiator system which essentially comprises the following: a) 0.001 to 5 wt. % (in relation to the total quantity of monomers used to produce the polymer dispersion) of a1) an oxidising agent R OOH, R being hydrogen, a C1- to C8-alkyl group or a C6- to C12-aryl group and/or a2) a compound which releases hydrogen peroxide in an aqueous medium and b) 0.005 to 5 wt. % (in relation to the total quantity of monomers used to produce the polymer dispersion) of b1) an alpha -hydroxycarbonyl compound of formula (I), wherein R and R , independently of each other, mean hydrogen and/or a C1- to C12- alkyl group which can contain functional groups and/or be olefinically unsaturated and R and R optionally form a ring structure with methylene groups and said ring structure can contain functional groups and/or be olefinically unsaturated and/or b2) a compound which releases alpha -hydroxycarbonyl compounds of this type in an aqueous medium and c) advantageously, catalytic quantities of a multivalent metal ion which can occur in several valence states.

    摘要翻译： 本发明涉及一种通过用引发剂体系再处理来降低聚合物水分散体中残余单体量的方法，所述引发剂体系基本上包含以下物质：a）0.001至5wt。 a1）氧化剂R 1 OOH，R 1为氢，C 1 -C 8烷基或C 6 -C 12烷基 - 芳基和/或a2）在水性介质中释放过氧化氢的化合物和b）0.005-5重量％ b1）式（I）的α-羟基羰基化合物，其中R 2和R 3彼此独立地表示氢和 /或可以含有官能团和/或是烯属不饱和基团的C1-至C12-烷基基团，并且R2和R3任选地与亚甲基基团形成环状结构，并且所述环状结构可以含有官能团和/或 是烯属不饱和的和/或b2）在水性介质中释放这种类型的α-羟基羰基化合物的化合物，和c）催化量的多价金属离子，其可以以多种价态存在。

    THE PRODUCTION OF AQUEOUS DISPERSIONS OF CATIONIC HOMO- AND COPOLYMERS USING AMPHOTERIC PROTECTIVE COLLOIDS
    8.
    发明授权
    THE PRODUCTION OF AQUEOUS DISPERSIONS OF CATIONIC HOMO- AND COPOLYMERS USING AMPHOTERIC PROTECTIVE COLLOIDS 有权
    用于生产水性分散体阳离子均聚物和共聚物使用胶体保护两性

    公开(公告)号：EP1546224B1

    公开(公告)日：2006-05-17

    申请号：EP03793769.5

    申请日：2003-08-29

    申请人： BASF Aktiengesellschaft

    发明人： GAUWEILER, Werner ,  LEDUC, Marc ,  CHRISSTOFFELS, Lysander ,  GOTSCHE, Michael ,  WOOD, Claudia

    IPC分类号： C08F220/34 ,  C08F220/04

    CPC分类号： C08F220/34 ,  C08F220/04 ,  C08F226/10 ,  C08F226/04

    摘要： A process for the production of water-soluble or water-swellable cationic polymers by (i) free-radically initiated copolymerization of monomer mixtures in water comprising (a) from 1 to 99% by weight of a cationic monomer or quaternizable monomer, (b) from 1 to 99% by weight of a water-soluble monomer, (c) from 0 to 10% by weight of a bi- or polyfunctional, free-radically copolymerizable monomer, adjusting the amounts (a) to (c) in such a way that the resulting polymer has an overall positive charge, in the presence of 1 to 100% of the amount of a salt which is necessary to saturate the reaction medium with said salt and in the presence of 0,1 to 20 % by weight referred to the weight of the dispersion, of an amphoteric dispersant having an overall negative charge, and (ii) subsequent quaternization of the polymer if the monomer (a) employed is a non-quaternized monomer is disclosed.