发明授权
- 专利标题: Resin compositions for extrusion coating
- 专利标题(中): 用于挤出涂层的树脂组合物
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申请号: US10566937申请日: 2004-09-03
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公开(公告)号: US07776987B2公开(公告)日: 2010-08-17
- 发明人: Thomas Oswald , James L. Cooper , Jeffrey D. Weinhold , David T. Gillespie
- 申请人: Thomas Oswald , James L. Cooper , Jeffrey D. Weinhold , David T. Gillespie
- 申请人地址: US MI Midland
- 专利权人: Dow Global Technologies, Inc.
- 当前专利权人: Dow Global Technologies, Inc.
- 当前专利权人地址: US MI Midland
- 国际申请: PCT/US2004/029124 WO 20040903
- 国际公布: WO2005/023912 WO 20050317
- 主分类号: C08F110/02
- IPC分类号: C08F110/02 ; C08F8/00 ; C08L23/00 ; C08L23/04
摘要:
A composition is disclosed which is particularly suited for use in extrusion coating. The composition comprises a polymeric material having a rheology such that the slope S of a natural log-natural log plot of loss modulus (or G″) versus storage modulus (or G′) is greater than [0.635*(melt index)+13.2]/[(melt index)+16.6], and wherein the polymeric material has a CDF RI fraction less than 0.23 of a GPC chromatogram which has a molecular weight above 85,000 g/mol, and a CDF LS fraction of more than 0.07 at a conventional GPC molecular weight of 1,750,000 g/mol or greater. The compositions exhibit reduced neck-in when used in extrusion coating and the neck-in is independent of melt strength, thereby facilitating improved extrusion processes.
公开/授权文献
- US20060281866A1 Resin compositions for extrusion coating 公开/授权日:2006-12-14
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