Patent · US Expired

Polypropylene thermoplastic elastomer compositions having improved processing properties and physical property balance

US6630538B1 · kind B1 · utility

19Cited by

2References

11Claims

0Family size

Inventors

Maria D. Ellul · Stow, US
Prasadarao Meka · Seabrook, US
Kang-Bo Wang · Creve Coeur, US
Yu Wang · Beijing, CN

Key dates

Filing date	Aug 31, 2001
Grant date	Oct 7, 2003
Priority date	—
Expiry date	Aug 31, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L23/16
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Thermoplastic elastomer compositions having improved processabillity while maintaining good physical properties are prepared from a mixture of olefinic rubber and a polypropylene composition having a melt flow rate in the range of from about 0.5 to about 5 dg/min. and a molecular weight distribution Mw/Mn of greater than 5.5 up to about 20. The rubber component of the mixture may be at least partially cured by dynamic vulcanization.

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