Patent · US Active

Impact-modified polypropylene

US9040633B2 · kind B2 · utility

2Cited by

4References

12Claims

0Family size

Assignee

Borealis Technology Oy · FI

Inventors

Klaus Bernreitner · Linz, AT
Tung Pham · Paris, FR
Jens Reussner · Linz, AT

Key dates

Filing date	Oct 27, 2008
Grant date	May 26, 2015
Priority date	—
Expiry date	Jun 11, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L23/142
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a polymer composition, comprising: (i) a polypropylene matrix; (ii) a first elastomeric phase dispersed within the matrix and having a glass transition temperature Tg1, measured with dynamical mechanical thermal analysis according to ISO 6721-2, wherein the first elastomeric phase comprises an ethylene copolymer having comonomer units derived from C3 to C8 olefins; (iii) a second elastomeric phase dispersed within the matrix, wherein the second elastomeric phase is crosslinked and has a glass transition temperature Tg2, measured with dynamical mechanical thermal analysis according to ISO 6721-2, within the range of −70° C. to −90° C., wherein the difference between Tg1 and Tg2 is at least 15° C. and Tg1 is higher than Tg2.

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