发明名称 DISPERSIONES DE PARTICULAS HUECAS PERMEABLES DE BASE DURA O FIJA
摘要 A process for making void containing polymer particles comprising (A) emulsion polymerizing a core from a core monomer system comprising ethylenically unsaturated monomer containing acid functionality; (B) encapsulating said core with a sheath by emulsion polymerizing a sheath monomer system, comprising 0 to 10% by weight acid functional monomer, in the presence of said core, said sheath being permeable to fixed or permanent bases; (C) swelling, optionally in the presence of a solvent the polymer particles formed in (B) with fixed or permanent base so as to produce a dispersion of particles which, when dried, contain a single void which may cause opacity in compositions in which they are contained. <??>Compositions comprising said void containing polymer particles are also disclosed.
申请公布号 MX163420(B) 申请公布日期 1992.05.12
申请号 MX19860001190 申请日期 1986.01.09
申请人 ROHM AND HAAS COMPANY 发明人 ROBERT MITCHELL BLANKENSHIP;ALEXANDER KOWALSKI
分类号 C09D5/02;C08F2/22;C08F265/02;C08F291/00;C08J3/12;C08J9/28;C09D5/00;C09D133/00;(IPC1-7):C08J9/28 主分类号 C09D5/02
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