发明名称 |
POLYMERISATION PROCESS FOR PREPARATION OF NON-AQUEOUS DISPERSIONS OF MICROPARTICLES AND COATING COMPOSITIONS CONTAINING SAID MICROPARTICLES |
摘要 |
A process is described for making sterically stabilized non-aqueous dispersions of composite polymer microparticles, in which (1) monomers including at least one crosslinking monomer are polymerized in an aqueous medium at a temperature at least 10 DEG higher than the glass transition temperature of the polymer to be formed, in the presence of a block or graft copolymer stabilizing agent, under conditions such that there is at no time present a separate monomer phase, (2) further monomers, not including any crosslinking monomer, are polymerized in the dispersion thus obtained, the presence of a separate monomer phase again being avoided, and (3) the microparticles are transferred from the resulting dispersion into a non-aqueous medium which is a solvent for the non-crosslinked polymer generated in (2). The microparticles are of value for incorporation into coating compositions the main film-forming constituent of which is compatible with the non-crosslinked component of the particles. |
申请公布号 |
EP0030439(A3) |
申请公布日期 |
1981.07.15 |
申请号 |
EP19800304317 |
申请日期 |
1980.12.01 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
BACKHOUSE, ALAN JAMES;BROMLEY, CHARLES;THOMPSON, MORICE WILLIAM |
分类号 |
C08F2/20;C08F2/44;C08F265/06;C08F291/00;C08J3/09;C08L51/00;C09D151/00 |
主分类号 |
C08F2/20 |
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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