IP Library Patent Application 12743763
Patent Application
App. No. 12/743,763

GLASS FIBER REINFORCED POLYPROPYLENE

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Quick Facts
Patent No.
US None
App. No.
12/743,763
Abstract

The present invention concerns an improved glass fiber reinforced polypropylene composition as well as articles formed from this composition, wherein the composition, comprises a) More than 15-wt % glass fibers, and b) a specific heterophasic polypropylene composition with an at least bimodal disperse phase.

Claims (12)

1 . Composition, comprising

a) more than 15-wt % glass fibers, and

b) a heterophasic polypropylene composition, comprising a matrix phase and at least two disperse elastomeric components, wherein the heterophasic polypropylene composition has an overall comonomer content of 12-wt % or more and wherein the at least two disperse elastomeric components have a comonomer content of 20-wt % or more.

2 . Composition according to claim 1 , wherein the comonomer is ethylene.

3 . Composition according to claim 1 or 2 , wherein the disperse phase of the heterophasic polypropylene consists of two phases.

4 . Composition in accordance with any one of claims 1 to 3 , wherein the glass fiber content is from 20 to 40-wt %.

5 . Composition in accordance with any one of claims 1 to 4 , wherein the heterophasic polypropylene composition displays an overall MFR 2 of from 9 to 15 g/10 min and the matrix phase of the heterophasic polypropylene composition displays an MFR 2 of from 30 to 70 g/10 min.

6 . Composition in accordance with any one of claims 1 to 5 , wherein the composition further comprises up to 20-wt % of an elastomeric ethylene copolymer with an alpha-olefin with from 6 to 12 carbon atoms.

7 . Composition in accordance with any one of claims 1 to 6 , wherein the composition comprises from 50 to 70-wt % of the heterophasic polypropylene.

8 . Composition in accordance with any one of claims 1 to 7 , wherein the composition further comprises additives, selected from antioxidants, stabilizers, coloring agents, UV stabilizers, nucleating agents, antistatic agents, slip/mold release agents, and coupling agents present in amounts of 2-wt % each or less.

9 . Molded article, comprising the composition according to any one of claims 1 to 8 .

10 . Use of the composition according to any one of claims 1 to 8 for the preparation of molded articles.

Assignments (2)
CHANGE OF ADDRESS Recorded Feb 23, 2022
From: BOREALIS AG
To: BOREALIS AG
Reel/Frame 059219/0949 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 13, 2010
From: STOCKREITER, WOLFGANG; SCHININGER, RENATE; KASTL, JOCHEN
To: BOREALIS TECHNOLOGY OY
Reel/Frame 024833/0501 →