Patent · US Active

Propylene copolymer, polypropylene composition and uses thereof, transition metal compound and olefin polymerization catalyst

US7737239B2 · kind B2 · utility

10Cited by

8References

6Claims

0Family size

Assignee

MITSUI CHEMICALS, INC. · JP

Inventors

Shigenobu Ikenaga · Ichihara, JP
Ryoji Mori · Saitama, JP

Key dates

Filing date	Aug 4, 2008
Grant date	Jun 15, 2010
Priority date	—
Expiry date	Aug 4, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31938
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A propylene elastomer (PBER) comprising (a) 50 to 85 mol % of units derived from propylene, (b) 5 to 25 mol % of units derived from 1-butene and (c) 10 to 25 mol % of units derived from ethylene, and having a molar ratio of propylene content to ethylene content of from 89/11 to 70/30, and a modulus in tension (YM), as measured in accordance with JIS 6301, of not more than 40 Mpa.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.