 |
|
|
|
|
|
 Title: |
US4990558:
Graft copolymer compositions
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
DeNicola, Jr., Anthony J.; Newark, DE
Tatarka, Paul D.; Bear, DE
|
| Assignee: |
Himont Incorporated, Wilmington, DE
other patents from HIMONT INCORPORATED (252000) (approx. 99)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1991-02-05
/ 1990-03-26
|
| Application Number: |
US1990000499115
|
| IPC Code: |
Advanced:
C08L 23/00;
C08L 23/16;
C08L 25/08;
C08L 51/00;
C08L 51/06;
C08L 53/00;
C08L 53/02;
Core:
C08L 25/00;
more...
IPC-7:
C08L 51/06;
C08L 53/02;
|
| U.S. Class: |
Current:
524/504;
524/505;
525/071;
Original:
524/504;
524/505;
525/071;
|
| Field of Search: |
524/504,505
525/071
|
| Priority Number: |
| 1990-03-26 |
US1990000499115 |
|
| Abstract: |
Disclosed are compositions of (a) about from 60 to 95% of a graft copolymer comprising a styrene polymer grafted onto a propylene polymer material at a styrene polymer graft level of about 10-65%, and exhibiting a morphology in which the grafted styrene polymer is a dispersed phase and the propylene polymer material is the matrix phase, and (b) about from 40 to 5% of a rubber component comprising a monoalkenyl aromatic hydrocarbon-conjugated diene block copolymer, alone or in combination with a saturated (preferably, EPM) or unsaturated (preferably, EPDM) olefin copolymer rubber. These graft copolymer compositions are well-balanced with respect to impact strength and stiffness at high ductility levels. The compositions, which may be admixed with one or more additives such as inorganic fillers in an amount, for example, of up to about 80 parts additive per 100 parts of the graft copolymer and rubber component, are rigid thermoplastics useful as stand-alone structural materials.
|
| Primary / Asst. Examiners: |
Ziegler, Jacob;
|
| Maintenance Status: |
CC Certificate of Correction issued
|
| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
|
| Family: |
Show 30 known family members
|
First Claim:
Show all 23 claims |
We claim:
1. A composition comprising, by weight:
- (a) about from 60 to 95 percent of a graft copolymer comprising about from 10 to 65 percent by weight of a styrene polymer grafted onto a backbone of a propylene polymer material, and
- (b) about from 40 to 5 percent of a rubber component comprising (1) about from 20 to 100 percent by weight of (i) at least one monoalkenyl aromatic hydrocarbon-conjugated diene block copolymer, (ii) at least one block copolymer which is a hydrogenated product of (i), or (iii) a mixture of at least one (i) block copolymer with at least one (ii) block copolymer; and (2) from about 80 to 0 percent by weight of an olefin copolymer rubber.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 29 U.S. patent(s) that reference this one
|
