发明名称 |
IMPACT MODIFIED (METH)ACRYLIC POLYMERS |
摘要 |
A multistage core-shell particle consisting of a core, a first shell and optionally a second shell wherein (i) the core contains a first (meth)acrylic polymer; (ii) the first shell contains a low Tg polymer comprising 0 to 25% by weight of a styrenic monomer and 75 to 100% by weight of an (meth)acrylic monomer, the (meth)acrylic monomer capable of forming a homopolymer having a glass transition temperature (Tg) in the range from -75 to -5 DEG C, and which first shell represents more than 65% by volume of the combined volume of the core and first shell; (iii) the second shell, when present, contains a second (meth)acrylic polymer which may be the same or different from the first (meth)acrylic polymer; and (iv) the core and first shell together contain from 0.5 to 1.0% by weight of a graft-crosslinker. A composition and a polysiloxane-free moulded article containing residues obtainable from such core-shell particles. A method of forming a moulding article having improved impact resistance using an impact modifier formed from such core-shell particles. |
申请公布号 |
EP0828772(A1) |
申请公布日期 |
1998.03.18 |
申请号 |
EP19960917408 |
申请日期 |
1996.05.23 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
FRASER, IAN, MUIR;TREADGOLD, JONATHAN, MARK |
分类号 |
C08F20/10;C08F265/06;C08F285/00;C08L33/04;C08L33/06;C08L51/00;(IPC1-7):C08F265/06 |
主分类号 |
C08F20/10 |
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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