发明名称 |
Process for preparing rigid polyvinyl chloride stractured foams having superior surface characteristics |
摘要 |
A new rigid polyvinyl chloride foam is provided which has been improved with respect to the thickness of its non-foamed layer and the surface properties including its tensile strength and compressive strength. The foam can be produced preferably by mixing (per hundred resin) dioctyl phthalate and 4-20 phr of an impact-resistance modifier such as a methyl methacrylate acid-butadiene-styrene copolymer with a composition 100 phr of vinyl chloride resin, 5 phr of processing aid, 2 phr of a heat stabilizer, 0.5 phr of a lubricant, 0.75 phr of a foaming agent and 0.75 phr of boric acid, and then extruding the resulting mixture from a single-screw extruder.
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申请公布号 |
US4886837(A) |
申请公布日期 |
1989.12.12 |
申请号 |
US19880277894 |
申请日期 |
1988.11.30 |
申请人 |
KOREA ADVANCED INSTITUTE OF SCIENCE & TECHNOLOGY |
发明人 |
KIM, KWANG-UNG;KIM, BYOUNG-CHUL;HONG, SOON-MAN |
分类号 |
B32B5/18;B29C47/00;B29K27/06;B29K105/04;B29L9/00;B32B5/14;B32B27/30;C08J9/00;C08J9/06;C08J9/16;C08K3/38;C08L9/00;C08L27/06 |
主分类号 |
B32B5/18 |
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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