US4341885A
Expired / Lapsed
US
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Polymer composition
Assignee: Stamicarbon BV
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Filing: 1981-04-01
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Granted: 1982-07-27
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Expires: 2001-04-01
Abstract
Abstract An improved polymer composition having a combination of good flow behavior, UV stability, and very good impact resistance is described, essentially composed of a. 50-95 parts by weight of one or more copolymers obtained by the polymerization of a mixture of 10-90% by weight of styrene and/or derivatives of styrene, with 90-10% by weight of acrylonitrile and/or methacrylonitrile; and b. 5-50 parts by weight of 1. a largely saturated rubber, and 2. chlorinated polyethylene, wherein the chlorinated polyethylene has a chlorine content of at least 10% by weight, a DSC crystallinity of at least 10% and a glass transition temperature of at least equal to -15° C.
Inventors
- 👤 Herman A. J. Schepers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L25/16; C08L33/00; C08L33/18; C08L33/20; C08L23/00; C08L23/02; C08L23/16; C08L23/26; C08L23/28; C08L23/286; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
62 words
An impact resistant polymer composition combination formulated from the combination of a. 50-95 parts by weight of at least one copolymer obtained by the copolymerization of 10 to 90% by weight of a styrene monomer with 90 to 10% by weight of an acrylonitrile monomer, and b. 5 to 50 parts by weight of b.1. a rubber substantially free from chain unsaturation,
Claim 2
Dependent Claim
62 words
An impact resistant polymer composition combination formulated from the combination of a. 50-95 parts by weight of at least one copolymer obtained by the copolymerization of 10 to 90% by weight of a styrene monomer with 90 to 10% by weight of an acrylonitrile monomer, and b. 5 to 50 parts by weight of b.1. a rubber substantially free from chain unsaturation,
Claim 3
Dependent Claim
31 words
b.2. a chlorinated polyethylene having a chlorine content of at least 10% by weight, a DSC crystallinity of at least 10% and a glass transition temperature of at least -15° C.
Claim 4
Dependent Claim
31 words
b.2. a chlorinated polyethylene having a chlorine content of at least 10% by weight, a DSC crystallinity of at least 10% and a glass transition temperature of at least -15° C.
Claim 5
Dependent Claim
19 words
The polymer composition according to claim 1, wherein said copolymer is a copolymer of styrene or α-methylstyrene with acrylonitrile.
Claim 6
Dependent Claim
21 words
The polymer composition according to either claim 1 or 2, wherein said rubber is an ethylene-propylene rubber or an ethylene-propylenediene rubber.
Claim 7
Dependent Claim
27 words
The polymer composition according to any one of claims 1 or 2, wherein said chlorinated polyethylene has a chlorine content of from 15 to 50% by weight.
Claim 8
Dependent Claim
36 words
The polymer composition according to any one of claims 1 or 2, wherein said chlorinated polyethylene has a DSC crystallinity of from 15 to 60% and a chlorine content of from 15 to 50% by weight.
Claim 9
Dependent Claim
36 words
The polymer composition according to any one of claims 1 or 2, wherein said chlorinated polyethylene has a DSC crystallinility of from 15 to 40% and a chlorine content of from 15 to 50% by weight.
Claim 10
Dependent Claim
28 words
The polymer composition according to any one of claims 1 or 2, wherein the weight ratio of said chlorinated polyethylene to said rubber is between 1:20 and 20:1.
Claim 11
Dependent Claim
28 words
The polymer composition according to any one of claims 1 or 2, wherein the weight ratio of said chlorinated polyethylene to said rubber is between 1:4 and 4:1.
Claim 12
Dependent Claim
47 words
The polymer composition according to claim 1, which consists of a. 50 to 90% by weight of a styreneacrylonitrile copolymer or an α-methylstyrene-acrylonitrile copolymer, b.1. 2.5 to 25% by weight of an ethylenepropylene rubber of an ethylenepropylene-diene rubber, b.2 2.5 to 25% by weight of chlorinated polyethylene.
Claim 13
Dependent Claim
19 words
The polymer composition according to claim 9, having added thereto an additive in an amount up to about 10%.
Claim 14
Dependent Claim
23 words
The polymer composition according to claim 10, wherein said additive is an antioxidant, antistatic, lubricant, filler, colorant, pigment, UV stabilizer or fungicide agent.
References Cited (Backward Citations)
US3819763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |