发明授权
US4086191A Particulate expandable styrene polymers for the manufacture of foams
失效
用于制造泡沫的颗粒状可膨胀苯乙烯聚合物
- 专利标题： Particulate expandable styrene polymers for the manufacture of foams
- 专利标题（中）： 用于制造泡沫的颗粒状可膨胀苯乙烯聚合物
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申请号： US618931申请日： 1975-10-02
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公开(公告)号： US4086191A公开(公告)日： 1978-04-25
- 发明人: Klaus Hinselmann , Klaus Penzien , Rupert Schick , Manfred Walter , Heinz Weber , Heinrich Wirth
- 申请人： Klaus Hinselmann , Klaus Penzien , Rupert Schick , Manfred Walter , Heinz Weber , Heinrich Wirth
- 申请人地址： DT Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DT Ludwigshafen
- 优先权： DT2448476 19741011; DT2448956 19741015; DT2501680 19750117
- 主分类号： C08J9/00
- IPC分类号： C08J9/00 ; C08J9/16 ; C08J9/20 ; C08J9/22
摘要：
Particulate expandable styrene polymers which contain from 0.0001 to 0.2% by weight, based on the styrene polymer, of an inhomogeneously distributed nucleating agent for expandable polystyrene, the nucleating agent being present only in a peripheral zone of the particles while the interior of the particles is free from nucleating agent. Nucleating agents which may be used are organic compounds having at least three bromine atoms, bonded to aliphatic or cycloaliphatic structures, in the molecule, or bromine compounds which are polymerizable, or are copolymerizable with styrene.
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