Invention Grant
- Patent Title: Propylene impact copolymers having good optical properties
- Patent Title (中): 具有良好光学性能的丙烯抗冲共聚物
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Application No.: US13114549Application Date: 2011-05-24
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Publication No.: US08748539B2Publication Date: 2014-06-10
- Inventor: Peter S. Martin , Peter S. Dias , Jason C. Brodil , Li-Min Tau , Debra R. Wilson , Jeffrey D. Goad , Matthew J. Fedec
- Applicant: Peter S. Martin , Peter S. Dias , Jason C. Brodil , Li-Min Tau , Debra R. Wilson , Jeffrey D. Goad , Matthew J. Fedec
- Applicant Address: US PA Philadelphia
- Assignee: Braskem America, Inc.
- Current Assignee: Braskem America, Inc.
- Current Assignee Address: US PA Philadelphia
- Agency: Duane Morris LLP
- Main IPC: C08L23/10
- IPC: C08L23/10 ; C08L23/04

Abstract:
Propylene impact copolymers (ICPs) are provided which comprise: (a) a matrix phase which comprises from 60 to 95 weight % of a polypropylene polymer containing from 0 to 6 mole % of units derived from one or more alpha-olefins other than propylene, and (b) a dispersed phase which comprises from 5 to 40 weight % of a copolymer derived from a first comonomer which can be either propylene or ethylene together with a second alpha-olefin comonomer. The ICP is further characterized by having a beta/alpha ratio less than or equal to 1.1. The ICPs of the present invention are particularly well suited for applications requiring clear, tough polymers such as thin walled injection molded articles for frozen food packaging applications.
Public/Granted literature
- US20120302701A1 PROPYLENE IMPACT COPOLYMERS HAVING GOOD OPTICAL PROPERTIES Public/Granted day:2012-11-29
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