发明名称 |
POLYOLEFIN MULTILAYER MEMBRANES |
摘要 |
<p>A membrane comprising a base layer (A) and a top layer (B), where the base layer (A) comprises a heterophasic composition (I) containing the following polymer components, all percent amounts being by weight: a) 10-40% of a propylene homopolymer, or copolymer containing over 85% of propylene, and having a fraction insoluble in xylene at room temperature greater than 80%; and b) 60-90% of one or moreα-olefin/ethylene copolymers containing less than 40% of ethylene and having solubility in xylene at room temperature greater than 70%; the amounts of (a) and (b) being referred to the total weight of (a) and (b); and the top layer (B) comprises one or more of a homopolymer and copolymer(s) of propylene containing from 65 to 99% by weight of propylene; said top layer (B) being at least partially bonded to the base layer (A).</p> |
申请公布号 |
EP2231314(A1) |
申请公布日期 |
2010.09.29 |
申请号 |
EP20080862642 |
申请日期 |
2008.12.15 |
申请人 |
BASELL POLIOLEFINE ITALIA S.R.L. |
发明人 |
LUNGHI, LUCA;MEDRI, ALESSANDRO;CREDALI, UMBERTO;FELISATI, ANDREA |
分类号 |
B32B5/02;B32B27/08;B32B27/12;B32B27/20 |
主分类号 |
B32B5/02 |
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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