US4485215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding composition
Assignee: Lyondell Chemical Technology LP
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Filing: 1983-05-11
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Granted: 1984-11-27
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Expires: 2003-05-11
Abstract
Abstract Interpolymers resulting from the polymerization of a vinyl/aromatic monomer such as styrene, an olefinic nitrile such as acrylonitrile and a maleimide in the presence of both an ethylene propylene-diene terpolymer (EPDM) and an ethylene-acrylate copolymer and to molded products produced therefrom are described.
Inventors
- 👤 Barry D. Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:50
CPC Classifications
C; C08; C08L; C08L35/00; C08L35/06; C08F; C08F255/00; C08F255/02; C08F255/06; C08L67/00; C08L67/02; C08L67/03
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
A thermoplastic molding composition comprising (a) a matrix resin comprised of a monoalkenyl aromatic monomer, a dicarboxylic anhydride imide monomer and a monoalkenyl nitrile monomer; (b) an ethylene-propylene-diene terpolymer rubber; and (c) an ethylene based thermoplastic elastomer containing an acrylate functionality wherein the molding composition is produced by polymerizing in a temperature range of about 60° C. to about 120° C. the polymerizing the monomers of which the matric resin is comprised matrix resin (a) in the presence of the (b) and the (c).
Claim 2
Dependent Claim
84 words
A thermoplastic molding composition comprising (a) a matrix resin comprised of a monoalkenyl aromatic monomer, a dicarboxylic anhydride imide monomer and a monoalkenyl nitrile monomer; (b) an ethylene-propylene-diene terpolymer rubber; and (c) an ethylene based thermoplastic elastomer containing an acrylate functionality wherein the molding composition is produced by polymerizing in a temperature range of about 60° C. to about 120° C. the polymerizing the monomers of which the matric resin is comprised matrix resin (a) in the presence of the (b) and the (c).
Claim 3
Dependent Claim
30 words
The thermoplastic molding composition of claim 1 in which said monoalkenyl aromatic monomer is selected from the group consisting of styrene, alphamethylstyrene, para-methylstyrene, t-butylstyrene, and mono-, di-, or trihalogenated styrene.
Claim 4
Dependent Claim
30 words
The thermoplastic molding composition of claim 1 in which said dicarboxylic anhydride imide is selected from the group consisting of maleimide, N-methylmaleimide, N-ethylmaleimide, N-phenylmaleimide, and N-(mono-, di-, or trihalogenated) phenylmaleimide.
Claim 5
Dependent Claim
23 words
The thermoplastic molding composition of claim 1 in which said monoalkenyl nitrile monomer is selected from the group consisting of acrylonitrile and methacrylonitrile.
Claim 6
Dependent Claim
21 words
The thermoplastic molding composition of claim 1 in which said (b) terpolymer is comprised of ethylene, propylene and a nonconjugated diene.
Claim 7
Dependent Claim
24 words
The thermoplastic molding composition of claim 5 in which said nonconjugated diene is selected from the group consisting of 1,4-hexadiene, dicyclopentadiene and ethylidiene norbornene.
Claim 8
Dependent Claim
37 words
The thermoplastic molding composition of claim 1 in which said ethylene based thermoplastic elastomer comprises from about 99 to about 75 weight percent ethylene and from about 1 to about 25 weight percent of a monoalkenyl acrylate.
Claim 9
Dependent Claim
26 words
The thermoplastic molding composition of claim 7 in which said monoalkenyl acrylate is selected from the group consisting of methyl acrylate, ethyl acrylate, and n-butyl acrylate.
Claim 10
Dependent Claim
48 words
The thermoplastic molding composition of claim 1 comprising in weight percent from about 65 to about 95 of the matrix resin, from about 3 to about 25 of the (b) terpolymer and from about 2 to about 10 of the ethylene based thermoplastic elastomer containing an acrylate functionality.
Claim 11
Dependent Claim
46 words
The thermoplastic molding composition of claim 9 in which said matrix resin is comprised of in weight percent from about 40 to about 65 monoalkenyl aromatic monomer, from about 20 to about 35 dicarboxylic anhydride imide, and from about 5 to about 25 monoalkenyl nitrile monomer.
Claim 12
Dependent Claim
26 words
The thermoplastic molding composition of claim 1 in which said matrix resin has a molecular weight within the range of from about 100,000 to about 700,000.
Claim 13
Dependent Claim
26 words
The thermoplastic molding composition of claim 1 in which said matrix resin has a molecular weight within the range of from about 200,000 to about 500,000.
Claim 14
Dependent Claim
26 words
The thermoplastic molding composition of claim 1 in which said (b) terpolymer has a molecular weight within the range of from about 100,000 to about 500,000.
Claim 15
Dependent Claim
26 words
The thermoplastic molding composition of claim 1 in which said (b) terpolymer has a molecular weight within the range of from about 200,000 to about 400,000.
Claim 16
Independent Claim
110 words
A method for producing a moldable compound which comprises incorporating 1 an ethylene-propylene-diene terpolymer rubber and 2 an ethylene based thermoplastic elastomer containing an acrylate functionality into (3) a matrix resin comprised of a monoalkenyl aromatic monomer, a dicarboxylic anhydride imide monomer and a monoalkenyl nitrile monomer, and polymerizing in a temperature range of about 60° to about 120° C. the resulting composition is produced by polymerizing the monomers of which the matric resin is comprised the matrix resin (3) in the presence of the I and the II., the ethylene based thermoplastic elastomer being present in an amount sufficient to improve at least one property of the molded composition.
Claim 17
Independent Claim
110 words
A method for producing a moldable compound which comprises incorporating 1 an ethylene-propylene-diene terpolymer rubber and 2 an ethylene based thermoplastic elastomer containing an acrylate functionality into (3) a matrix resin comprised of a monoalkenyl aromatic monomer, a dicarboxylic anhydride imide monomer and a monoalkenyl nitrile monomer, and polymerizing in a temperature range of about 60° to about 120° C. the resulting composition is produced by polymerizing the monomers of which the matric resin is comprised the matrix resin (3) in the presence of the I and the II., the ethylene based thermoplastic elastomer being present in an amount sufficient to improve at least one property of the molded composition.
Claim 18
Dependent Claim
13 words
A molded article produced by molding the thermoplastic molding composition of claim 1.
References Cited (Backward Citations)
CA1079893A
Cited
US4211692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |