发明名称 |
PROPYLENE COPOLYMER FOR BOPP HEAT SEAL FILM LAYERS |
摘要 |
A propylene-comonomer block copolymer may have a molecular weight distribution Mw/Mn of at least 1.7, a percentage of enthalpy measured between Ti and [Tm−18° C.] of at least 20% of the total enthalpy, and a ratio E1/Co of at least 0.80. The propylene-comonomer block copolymer may be produced by polymerizing propylene in the presence of at least one comonomer and a bridged metallocene catalyst. The bridged metallocene catalyst may include bridged fluorenyl, bridged indenyl metallocene, or any combination thereof. The propylene-comonomer block copolymer may be used as a heat seal layer for biaxially oriented multi-layer films. |
申请公布号 |
US2016376393(A1) |
申请公布日期 |
2016.12.29 |
申请号 |
US201414903302 |
申请日期 |
2014.07.09 |
申请人 |
TOTAL RESEARCH & TECHNOLOGY |
发明人 |
LHOST Olivier;VANTOMME Aurélien;WELLE Alexandre |
分类号 |
C08F293/00;B32B27/08;B32B27/32 |
主分类号 |
C08F293/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Seneffe BE |