- 专利标题： Multilayer film comprising propylene-ethylene-1-butene terpolymers
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申请号： US15750799申请日： 2016-07-19
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公开(公告)号： US11028259B2公开(公告)日： 2021-06-08
- 发明人: Paola Massari , Caroline Cathelin , Claudio Cavalieri , Marco Ciarafoni , Andrea Felisati , Angelo Ferraro , Giampiero Morini , Fabrizio Piemontesi , Gianni Vitale
- 申请人： BASELL POLIOLEFINE ITALIA S.R.L.
- 申请人地址： IT Milan
- 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： IT Milan
- 优先权： EP15180036 20150806
- 国际申请： PCT/EP2016/067143 WO 20160719
- 国际公布： WO2017/021137 WO 20170209
- 主分类号： C08L23/14
- IPC分类号： C08L23/14 ; B32B27/32 ; B32B27/08
摘要：
A multilayer film made from or containing a skin layer made from or containing a polyolefin composition made from or containing:
A) from 19 wt % to 50 wt % of a propylene ethylene copolymer having an ethylene derived units content ranging from 1.5 wt % to 6.0 wt % and
B) from 50 wt % to 81 wt % of a propylene ethylene 1-butene terpolymer having an ethylene derived units content ranging from 1.5 wt % to 6.0 wt % and 1-butene derived units content of between 4.8 wt % to 12.4 wt %;
the sum of the amount of component A) and B) being 100;
the composition being characterized by the following features: molecular weight distribution (MWD), expressed in terms of Mw/Mn, greater than 4.0; the creep and recovery curve measured on the polymer fuse at 200° C. shows a maximum value between 600 and 1200 seconds, lower than 53×10−5 1/Pa.
A) from 19 wt % to 50 wt % of a propylene ethylene copolymer having an ethylene derived units content ranging from 1.5 wt % to 6.0 wt % and
B) from 50 wt % to 81 wt % of a propylene ethylene 1-butene terpolymer having an ethylene derived units content ranging from 1.5 wt % to 6.0 wt % and 1-butene derived units content of between 4.8 wt % to 12.4 wt %;
the sum of the amount of component A) and B) being 100;
the composition being characterized by the following features: molecular weight distribution (MWD), expressed in terms of Mw/Mn, greater than 4.0; the creep and recovery curve measured on the polymer fuse at 200° C. shows a maximum value between 600 and 1200 seconds, lower than 53×10−5 1/Pa.
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