Patent US4424309A successfully refreshed from Google Patents.
US4424309A
Expired / Lapsed
US
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Polymer composition comprising ClPe, S/An, PVC, and rubber
Assignee: Stamicarbon BV
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Filing: 1981-08-07
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Granted: 1984-01-03
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Expires: 2001-08-07
Abstract
Abstract The invention relates to a polymer composition based on a copolymer of an unsaturated nitrile, a substantially saturated rubber, a chlorinated polyethylene, and a vinylchloride polymer. To improve the impact resistance and the flexural modulus, the polymer composition according to the invention comprises: a. 50-95 parts by weight of: a.1. 5-70 parts by weight of one or more polymers obtained by polymerizing a mixture of: 10-90% wt. styrene and/or styrene derivatives, 90-10% wt. acrylonitrile and/or methacrylonitrile, and 0-20% wt. of one or more other monomers; and a.2. 95-30% vinylchloride polymer; and b. 5-50 parts by weight of: b.1. a substantially saturated rubber, and b.2. chlorinated polyethylene; with the vinylchloride polymer content in the overall polymer composition being at least about 25% by weight.
Inventors
- 👤 Herman A. J. Schepers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L21/00; C08L23/00; C08L23/02; C08L23/16; C08L23/26; C08L23/28; C08L23/286
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
A compounded polymer composition composed of: a. from 50 to 95 parts by weight of a mixture of a.1. from 5 to 70 parts by weight of at least one polymer obtained by copolymerizing a mixture of 10-90% wt. styrene and/or styrene derivatives, 90-10% wt. acrylonitrile and/or methacrylonitrile, and 0-20% wt. of one or more other monomers, and a.2. from 95 to 30% wt. of a vinylchloride polymer; together with b. from 5 to 50 parts by weight of b.1. a substantially saturated rubber, and b.2. chlorinated polyethylene, and wherein the vinylchloride polymer content in the overall polymer composition is at least 25% by weight.
Claim 2
Dependent Claim
105 words
A compounded polymer composition composed of: a. from 50 to 95 parts by weight of a mixture of a.1. from 5 to 70 parts by weight of at least one polymer obtained by copolymerizing a mixture of 10-90% wt. styrene and/or styrene derivatives, 90-10% wt. acrylonitrile and/or methacrylonitrile, and 0-20% wt. of one or more other monomers, and a.2. from 95 to 30% wt. of a vinylchloride polymer; together with b. from 5 to 50 parts by weight of b.1. a substantially saturated rubber, and b.2. chlorinated polyethylene, and wherein the vinylchloride polymer content in the overall polymer composition is at least 25% by weight.
Claim 3
Dependent Claim
25 words
Polymer composition according to claim 1, wherein the combined quantity of rubber and chlorinated polyethylene is at least 10%, related to the total polymer composition.
Claim 4
Dependent Claim
23 words
Polymer composition of claim 1 or claim 2, wherein the combined quantity of rubber and chlorinated polyethylene is at most 40% by weight.
Claim 5
Dependent Claim
33 words
Polymer composition according to any one of claims 1 or 2, wherein said substantially saturated rubber is selected from the group of butyl rubber, chlorobutyl rubber, acrylate rubber, ethylene-propylene rubber, and ethylene-propylene-diene rubber.
Claim 6
Dependent Claim
25 words
Polymer composition according to either one of claims 1 or 2, wherein the weight ratio of chlorinated polyethylene to rubber is between 1:20 and 20:1.
Claim 7
Dependent Claim
25 words
Polymer composition according to either one of claims 1 or 2, wherein the weight ratio of chlorinated polyethylene and rubber is between 1:4 and 4:1.
Claim 8
Dependent Claim
25 words
Polymer composition according to either one of claims 1 or 2, wherein said chlorinated polyethylene has a chlorine content between 15 and 50 wt. %.
Claim 9
Dependent Claim
30 words
Polymer composition according to either one of claims 1 or 2, wherein said chlorinated polyethylene has a DSC crystallinity value of between 10% and 40% in the second heating curve.
Claim 10
Dependent Claim
45 words
A compounded polymer composition composed of: 10 to 65% wt. of a copolymer of styrene and acrylonitrile, 25 to 85% wt. of polyvinylchloride, 2.5 to 20% wt. of substantially saturated rubber, 2.5 to 20% wt. of chlorinated polyethylene, and 0 to 10% wt. of additives.
Claim 11
Dependent Claim
45 words
A compounded polymer composition composed of: 10 to 65% wt. of a copolymer of styrene and acrylonitrile, 25 to 85% wt. of polyvinylchloride, 2.5 to 20% wt. of substantially saturated rubber, 2.5 to 20% wt. of chlorinated polyethylene, and 0 to 10% wt. of additives.
Claim 12
Dependent Claim
44 words
A compounded polymer composition composed of: 10 to 65% wt. of a copolymer of styrene and acrylonitrile 25 to 80% wt. of polyvinylchloride 5 to 20% wt. of substantially saturated rubber 5 to 20% wt. of chlorinated polyethylene 0 to 10% wt. of additives.
Claim 13
Dependent Claim
44 words
A compounded polymer composition composed of: 10 to 65% wt. of a copolymer of styrene and acrylonitrile 25 to 80% wt. of polyvinylchloride 5 to 20% wt. of substantially saturated rubber 5 to 20% wt. of chlorinated polyethylene 0 to 10% wt. of additives.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |