发明名称 |
Framställning av polymerpartiklar |
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 |
FI99231(B) |
申请公布日期 |
1997.07.31 |
申请号 |
FI19910001544 |
申请日期 |
1991.03.28 |
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;(IPC1-7):C08F220/02;C08F212/06 |
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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