发明授权
- 专利标题: Long chain branched EPDM compositions and processes for production thereof
- 专利标题(中): 长链支化EPDM组合物及其生产方法
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申请号: US13954333申请日: 2013-07-30
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公开(公告)号: US08962761B2公开(公告)日: 2015-02-24
- 发明人: Mun F. Tse
- 申请人: ExxonMobil Chemical Patents Inc.
- 申请人地址: US TX Houston
- 专利权人: ExxonMobil Chemical Patents Inc.
- 当前专利权人: ExxonMobil Chemical Patents Inc.
- 当前专利权人地址: US TX Houston
- 代理商 Catherine L. Bell
- 主分类号: C08F8/00
- IPC分类号: C08F8/00 ; C08F255/00 ; C08L23/06 ; C08L23/14 ; C08F279/02 ; C08L9/00
摘要:
Highly branched compositions including: (i) from about 96 wt % to about 99.9 wt % metallocene catalyzed ethylene propylene diene derived units; and (ii) from about 0.1 wt % to about 4 wt % multifunctional monomer derived units, wherein the highly branched composition has: (a) a Mooney viscosity ML (1+4) at 125° C. of about 30 to 100 MU, (b) a Mooney relaxation area MLRA of about 100 to about 1000, (c) a branching index, g′(vis) of less than about 0.9, (d) a phase angle, δ, of less than about 55 degrees at a complex modulus of 10 kPa, measured at 190° C., and (e) a degree of shear thinning greater than about 0.95, measured at 190° C., are disclosed herein. Homogeneous blends including this composition are also described. Processes to make the highly branched composition and the homogeneous blend are also described herein.
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