发明申请
- 专利标题： POLYOLEFIN GASKETS FOR CLOSURES
- 专利标题（中）： 聚氯乙烯垫圈封闭
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申请号： PCT/EP2016/061648申请日： 2016-05-24
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公开(公告)号： WO2016188982A1公开(公告)日： 2016-12-01
- 发明人: MARCHINI, Roberta , SPATARO, Stefano , PASQUALI, Stefano , MUSACCHI, Gianluca
- 申请人： BASELL POLIOLEFINE ITALIA S.R.L.
- 申请人地址： Via Soperga, 14/A 20127 Milano IT
- 专利权人： BASELL POLIOLEFINE ITALIA S.R.L.
- 当前专利权人： BASELL POLIOLEFINE ITALIA S.R.L.
- 当前专利权人地址： Via Soperga, 14/A 20127 Milano IT
- 代理机构： GAVERINI, Gaetano
- 优先权： EP15169240.7 20150526
- 主分类号： B29C47/00
- IPC分类号： B29C47/00 ; B65D53/06 ; C08L23/14 ; C08L23/20
摘要：
A gasket for closures comprising a polyolefin composition (I) containing A) from 25 to 62% by weight of a copolymer of butene-1 with ethylene having a copolymerized ethylene content of up to 18% by mole and no melting peak detectable at the DSC at the second heating scan; B) from 38 to 75% by weight, of (i) a propylene homopolymer, or (ii) a propylene copolymer, or (iii) a mixture of two or more of (i) and (ii), having a melting temperature T m , measured by DSC at the second heating scan, of from 130°C to 165°C; wherein the amounts of A) and B) are referred to the total weight of A) + B).
