发明名称 |
STYRENE BUTADIENE BLOCK COPOLYMERS FOR FILM APPLICATIONS |
摘要 |
We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight. We further disclose a method of shrink-wrapping an object or a group of objects by wrapping the object or the group of objects with a film containing the composition, to yield a wrapped object or group of objects, and heating the wrapped object or group of objects to a temperature and for a duration sufficient to shrink the film in at least a first direction, to yield a shrink-wrapped object or group of objects. |
申请公布号 |
EP2094752(A1) |
申请公布日期 |
2009.09.02 |
申请号 |
EP20070869105 |
申请日期 |
2007.12.11 |
申请人 |
CHEVRON PHILLIPS CHEMICAL COMPANY LP |
发明人 |
BROWN, JOHN M.;SMITH, MICHAEL A.;STACY, NATHAN E.;STOUFFER, CARLETON E;WILKEY, JOHN D |
分类号 |
C08F297/04;C08L53/02 |
主分类号 |
C08F297/04 |
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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