Title:
ELASTIC FILMS INCLUDING CRYSTALLINE POLYMER AND CRYSTALLIZABLE POLYMERS OF PROPYLENE
Document Type and Number:
WIPO Patent Application WO2000069963
Kind Code:
A9
Abstract:
Improved thermoplastic polymer elastic film blend compositions including a crystalline isotactic polypropylene component and a crystallizable alpha-olefin and propylene copolymer component, the copolymer having crystallizable alpha-olefin sequences. In a preferred embodiment, improved thermoplastic polymer blends are provided made up of from 0 % to 95 %, preferably 2 % to 40 weight % of the crystalline isotactic polypropylene and from 5 % to 100 %, preferably 60 % to 98 weight % of a crystallizable ethylene and propylene copolymer, wherein the copolymer has isotactically crystallizable propylene sequences and is predominately propylene. The resultant blends manifest unexpected compatibility characteristics, and improved resistance to elastic deformation of the crystalline isotactic polypropylene and from of a crystallizable ethylene and propylene copolymer.
Inventors:
DATTA SUDHIN
MIDDLESWORTH JEFFREY A
MIDDLESWORTH JEFFREY A
Application Number:
PCT/US2000/013011
Publication Date:
April 18, 2002
Filing Date:
May 12, 2000
Export Citation:
Assignee:
EXXON CHEMICAL PATENTS INC (US)
International Classes:
C08J5/18; C08L23/10; C08L23/12; C08L23/14; C08F4/659; C08F4/6592; C08L91/00; (IPC1-7): C08L23/16
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