US4468487A
Expired / Lapsed
US
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Polymer composition comprising nitrile copolymer, CPE and rubber
Assignee: Stamicarbon BV
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Filing: 1982-09-24
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Granted: 1984-08-28
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Expires: 2002-09-24
Abstract
Abstract Disclosed is an impact-resistant polymer composition based on a copolymer of an unsaturated nitrile, a substantially saturated rubber and a chlorinated polyethylene. To maintain high impact resistance while retaining good processing properties, the polymer composition comprises: A. 40-95 parts by weight of at least one copolymer obtained by polymerizing a mixture of: (1) 10-90 weight % of one or more monomers selected from the group consisting of styrene and derivatives thereof, and (2) 90-10 weight % of one or more monomers selected from the group containing of acrylonitrile and methacrylonitrile; and B. 5-60 parts by weight of a mixture comprising: (1) a substantially saturated rubber, and (2) chlorinated polyethylene having a chlorine content of from 32 to 45 weight %, a DSC crystallinity viscosity of at least 1.0, and wherein the weight ratio between rubber and chlorinated polyethylene is from 2:1 to 1:10.
Inventors
- 👤 Herman A. J. Schepers
- 👤 Wilhelmus A. M. Debets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:30
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L23/00; C08L23/02; C08L23/16; C08L23/26; C08L23/28; C08L23/286
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
An impact-resistant polymer composition including an unsaturated nitrile-containing copolymer, at least one substantially saturated rubber and a chlorinated polyethylene comprising: A. 40-95 parts by weight of at least one copolymer obtained by polymerizing a mixture of: (1) 10-90 weight % of one or more monomers selected from the group consisting of styrene and derivatives thereof, and (2) 90-10 weight % of one or more monomers selected from the group consisting of acrylonitrile and methacrylonitrile; and B. 5-60 parts by weight of a mixture comprising: (1) a substantially saturated rubber, and (2) chlorinated polyethylene having a chlorine content of from 32 to 45 weight %, a DSC crystallinity of 0-7% and an intrinsic viscosity of at least 1.0, and wherein the weight ratio between rubber and chlorinated polyethylene is from 2:1 to 1:10.
Claim 2
Dependent Claim
132 words
An impact-resistant polymer composition including an unsaturated nitrile-containing copolymer, at least one substantially saturated rubber and a chlorinated polyethylene comprising: A. 40-95 parts by weight of at least one copolymer obtained by polymerizing a mixture of: (1) 10-90 weight % of one or more monomers selected from the group consisting of styrene and derivatives thereof, and (2) 90-10 weight % of one or more monomers selected from the group consisting of acrylonitrile and methacrylonitrile; and B. 5-60 parts by weight of a mixture comprising: (1) a substantially saturated rubber, and (2) chlorinated polyethylene having a chlorine content of from 32 to 45 weight %, a DSC crystallinity of 0-7% and an intrinsic viscosity of at least 1.0, and wherein the weight ratio between rubber and chlorinated polyethylene is from 2:1 to 1:10.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein said copolymer is formed by polymerizing acrylonitrile with a monomer or both monomers selected from the group consisting of styrene and α-methylstyrene.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein said rubber is selected from the group consisting of butyl rubber, acrylate rubber, chlorobutyl rubber, ethylene-proylene rubber, and ethylene-propylene-diene rubber.
Claim 5
Dependent Claim
97 words
An impact-resistant polymer composition based on an unsaturated nitrile-containing copolymer, at least one substantially saturated rubber and a chlorinated polyethylene, comprising: A. 30-94.99 weight % of one or more copolymers selected from the group consisting essentially of styrene-acrylonitrile and α-methylstyrene-acrylonitrile, and B-1. 2.5-35 weight % of a substantially saturated rubber selected from the group consisting of ethylene-propylene, ethylene-propylene-diene, or butyl rubber, and B-2. 2.5-35 weight % of chlorinated polyethylene having a chlorine content of from 32 to 45 weight percent, ADSC crystallinity of 0-7% and an intrinsic viscosity of at least 1.0, C. 0.01-10 weight % additives.
Claim 6
Dependent Claim
97 words
An impact-resistant polymer composition based on an unsaturated nitrile-containing copolymer, at least one substantially saturated rubber and a chlorinated polyethylene, comprising: A. 30-94.99 weight % of one or more copolymers selected from the group consisting essentially of styrene-acrylonitrile and α-methylstyrene-acrylonitrile, and B-1. 2.5-35 weight % of a substantially saturated rubber selected from the group consisting of ethylene-propylene, ethylene-propylene-diene, or butyl rubber, and B-2. 2.5-35 weight % of chlorinated polyethylene having a chlorine content of from 32 to 45 weight percent, ADSC crystallinity of 0-7% and an intrinsic viscosity of at least 1.0, C. 0.01-10 weight % additives.
Claim 7
Dependent Claim
43 words
The composition of claim 4 wherein said additives consist essentially of at least one component selected from the group consisting of anti-oxidants, antistatic agents, lubricants, reinforcing fillers, colorants, pigments, UV stabilizers, fungicides, hydrogen chloride binding compounds, metal deactivators, and flame retarding metal compounds.
Claim 8
Dependent Claim
92 words
The composition of claim 4 wherein said additives consist essentially of: C-A. from 0.05 to 5% by weight, relative to the composition, of at least one sterically hindered amine, and C-B. from 0.05 to 5% by weight, relative to the composition, of at least one component selected from the group consisting of benzophenone derivatives, benzotriazoles, benzylidene malonates, phenyl salicylates, and substituted acrylonitriles, and C-C. from 0.005 to 5% by weight, relative to the composition, of at least one component selected from the grtoup consisting of phenol derivatives, organic phosphites, and aromatic amines.
Claim 9
Dependent Claim
16 words
An object fabricated at least in part of the composition of claims 1, 4 or 5.
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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |