US5068285A
Expired / Lapsed
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Molding compositions with acrylonitrile-styrene-acrylate rubber copolymers
Assignee: Dow Chemical Co
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Filing: 1989-09-22
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Granted: 1991-11-26
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Expires: 2009-09-22
Abstract
Abstract Carbonate polymers (PC) such as randomly branched carbonate polymers, linear carbonate polymers and blends thereof are blended with ABS polymers and acrylonitrile-styrene-acrylate rubber (ASA) polymers as impact modifiers. The ABS polymers have greater than 18% acrylonitrile. The ASA impact modifier is in the PC and the ABS resin interphases so that higher melt elasticity is achieved.
Inventors
- 👤 Michael K. Laughner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:41
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L69/00; C08L69/005
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
133 words
A moldable composition consisting essentially of A) about 20 to about 95% by weight of a carbonate polymer selected from the group consisting of (i) randomly branched carbonate polymers, (ii) linear carbonate polymers, and (iii) blends of randomly branched carbonate polymers with linear carbonate polymers, B) about 5 to about 75% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and C) about 0.5 to about 20% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate wherein at least part of the core-shell graft copolymer is located in the carbonate polymer phase or in the interface between the carbonate phase and the vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer.
Claim 2
Dependent Claim
133 words
A moldable composition consisting essentially of A) about 20 to about 95% by weight of a carbonate polymer selected from the group consisting of (i) randomly branched carbonate polymers, (ii) linear carbonate polymers, and (iii) blends of randomly branched carbonate polymers with linear carbonate polymers, B) about 5 to about 75% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and C) about 0.5 to about 20% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate wherein at least part of the core-shell graft copolymer is located in the carbonate polymer phase or in the interface between the carbonate phase and the vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer.
Claim 3
Dependent Claim
21 words
A moldable composition according to claim 1 comprising A) about 20 to about 95% by weight of randomly branched carbonate polymers.
Claim 4
Dependent Claim
20 words
A moldable composition according to claim 1 comprising A) about 20 to about 95% by weight of linear carbonate polymers.
Claim 5
Dependent Claim
28 words
A moldable composition according to claim 1 comprising A) about 20 to about 95% by weight of a blend of randomly branched carbonate polymers with linear carbonate polymers.
Claim 6
Dependent Claim
77 words
A moldable composition according to claim 1 comprising A) about 30 to about 85% by weight of randomly branched carbonate polymers, B) about 15 to about 70% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and C) about 2 to about 15% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate.
Claim 7
Dependent Claim
76 words
A moldable composition according to claim 1 comprising A) about 30 to about 85% by weight of linear carbonate polymers. B) about 15% to about 70% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and C) about 2 to about 15% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate.
Claim 8
Dependent Claim
84 words
A moldable composition according to claim 1 comprising A) about 30 to about 85% by weight of a blend of randomly branched carbonate polymers with linear carbonate polymers, B) about 15 to about 70% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and C) about 2 to about 15% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate.
Claim 9
Dependent Claim
133 words
A process for the preparation of a blow molded article or thermoformed article comprising the steps of: A) providing a composition having high melt viscosity and melt strength comprising I) about 20 to about 95% by weight of a carbonate polymer selected from the group consisting of (i) randomly branched carbonate polymers, (ii) linear carbonate polymers, and (iii) blends of randomly branched carbonate polymers with linear carbonate polymers, II) about 5 to about 75% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and III) about 0.5 to about 20% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate, and B) molding said composition to form an article.
Claim 10
Dependent Claim
133 words
A process for the preparation of a blow molded article or thermoformed article comprising the steps of: A) providing a composition having high melt viscosity and melt strength comprising I) about 20 to about 95% by weight of a carbonate polymer selected from the group consisting of (i) randomly branched carbonate polymers, (ii) linear carbonate polymers, and (iii) blends of randomly branched carbonate polymers with linear carbonate polymers, II) about 5 to about 75% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and III) about 0.5 to about 20% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate, and B) molding said composition to form an article.
Claim 11
Dependent Claim
18 words
The process as set forth in claim 8 wherein said carbonate polymer is a randomly branched carbonate polymer.
Claim 12
Dependent Claim
17 words
The process as set forth in claim 8 wherein said carbonate polymer is a linear carbonate polymer.
Claim 13
Dependent Claim
26 words
The process as set forth in claim 8 wherein said carbonate polymer is a blend of a randomly branched carbonate polymer with a linear carbonate polymer.
Claim 14
Dependent Claim
137 words
A process according to claim 8 for the preparation of a blow molded article or thermoformed article comprising the steps of: A) providing a composition having high melt viscosity and melt strength comprising I) about 30 to about 85% by weight of a carbonate polymer selected from the group consisting of (i) randomly branched carbonate polymers, (ii) linear carbonate polymers, and (iii) blends of randomly branched carbonate polymers with linear carbonate polymers, II) about 15 to about 70% by weight of a vinyl cyanide-vinyl aromatic hydrocarbon-acrylate rubber copolymer, and III) about 2 to about 15% by weight of a core-shell graft copolymer having a butadiene polymer core and having an outer shell of a polymer selected from the group consisting of polymerized alkyl methacrylate and polymerized alkyl acrylate, and B) molding said composition to form an article.
Claim 15
Dependent Claim
18 words
The process as set forth in claim 12 wherein said carbonate polymer is a randomly branched carbonate polymer.
Claim 16
Dependent Claim
17 words
The process as set forth in claim 12 wherein said carbonate polymer is a linear carbonate polymer.
Claim 17
Dependent Claim
26 words
The process as set forth in claim 12 wherein said carbonate polymer is a blend of a randomly branched carbonate polymer with a linear carbonate polymer.
References Cited (Backward Citations)
US3852394A
Cited
US3944631A
Cited
US4148842A
Cited
JPS5859258A
Cited
US4677162A
Cited
JPS61261349A
Cited
JPS61261348A
Cited
US4652602A
Cited
US4764556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |