发明名称 |
Preparation of polymeric particles. |
摘要 |
<p>A process for the manufacture of core/shell polymer particles comprises forming a core particle containing acid functionality, a first shell around said core of a copolymer of a nonionic monoethylenically unsaturated aromatic monomer and a copolymerisable polar monomer in an amount of at least 15% by weight of the copolymer and having a solubility in water at 20 DEG C of at least 1% by weight and a second shell around said first shell of a polymer or copolymer of a nonionic monomer having a solubility in water at 20 DEG C of less than 1% by weight and swelling the particle with a non-volatile alkali to generate one or more vesicles. Preferably each shell contains a polymer or copolymer of styrene.</p> |
申请公布号 |
EP0451940(A2) |
申请公布日期 |
1991.10.16 |
申请号 |
EP19910301563 |
申请日期 |
1991.02.26 |
申请人 |
TIOXIDE GROUP PLC |
发明人 |
GHARAPETIAN, HRIRE;CHIP,GERALD KWONG;RUDIN, ALFRED |
分类号 |
C08F2/44;C08F2/18;C08F2/22;C08F285/00;C08J3/12 |
主分类号 |
C08F2/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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