发明授权
- 专利标题： Polymer foams
- 专利标题（中）： 聚合物泡沫
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申请号： US09066356申请日： 1998-09-10
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公开(公告)号： US06239187B1公开(公告)日： 2001-05-29
- 发明人: Wilfried Hatke , Freddy Helmer-Metzmann , Alexandra Jacobs
- 申请人： Wilfried Hatke , Freddy Helmer-Metzmann , Alexandra Jacobs
- 优先权： DE19540356 19951030; DE19619813 19960517
- 主分类号： C08J900
- IPC分类号： C08J900
摘要：
The present invention relates to foams comprising cycloolefin copolymers. The foam of the invention comprises at least one cycloolefin copolymer which comprises from 0.1 to 100% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units derived from one or more polycyclic olefins having one or more norbornene units and from 0 to 99% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units derived from one or more acyclic olefins of the formula where Ri, Rii, Riii and Riv are identical or different and are each a hydrogen atom, a linear, branched, saturated or unsaturated C1-C20-hydrocarbon radical or a C6-C18-aryl radical and from 0 to 99% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units of one or more monocyclic olefins of the formula VIII where n is a number from 2 to 10, and voids which can contain one or more gaseous substances.