发明名称 |
Acrylic impact modifier prepared by multi-stage polymerization and method for preparing the same |
摘要 |
The invention relates to an acrylic impact modifier having a core-shell structure that provides an acrylic impact modifier composition comprising (a) a rubber core containing an alkyl acrylate polymer comprising at least two layers having different cross-linking densities, and (b) a shell containing an alkyl methacrylate polymer; to a process for the preparation of the acrylic impact modifier; and to a poly(vinyl chloride) composition comprising it. The acrylic impact modifier imparting excellent impact resistance was invented by employing multi-stage polymerization and at the same time by controlling the swelling index of rubber particles by changing the degree of cross-linking from stage to stage. And the poly(vinyl chloride) comprising the impact modifier of the present invention has good weatherability as well as excellent impact strength.
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申请公布号 |
US7173082(B2) |
申请公布日期 |
2007.02.06 |
申请号 |
US20030472593 |
申请日期 |
2003.09.22 |
申请人 |
LG CHEM, LTD. |
发明人 |
AHN JEONG-HEON;HAN CHANG-SUN;LEE YONG-HUN;HAN SEON-HEE;LEE KWANG-JIN;SON HYUNG-JUN |
分类号 |
C08F285/00;C08F2/16;C08F265/06;C08L27/06;C08L51/00;C08L51/04 |
主分类号 |
C08F285/00 |
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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