US3922320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact-resistant vinyl halide resin compositions containing a styrene-butadiene-alkyl methacrylate polymer and a styrene-acrylonitrile copolymer
Assignee: Occidental Chemical Corp
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Filing: 1973-05-21
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Granted: 1975-11-25
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Expires: 1993-05-21
Abstract
Abstract Resinous compositions that have excellent melt flow characteristics and high impact resistance contain 70 to 90 percent by weight of a vinyl halide resin, 5 to 15 percent by weight of an elastomer that is a styrene-butadiene-alkyl methacrylate polymer or a partially cross-linked alkyl methacrylate polymer, and 5 to 15 percent by weight of a thermoplastic resin that is a styrene-acrylonitrile copolymer or a styrene-acrylonitrile-alkyl methacrylate terpolymer.
Inventors
- 👤 Fred E Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:46
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
AN IMPACT-RESISTANT RESINOUS COMPOSITION CONSISTING ESSENTIALLY OF A. 70 TO 90 PERCENT BY WEIGHT OF A VINYL HALIDE RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL HALIDES AND COPOLYMERS THAT CONTAIN AT LEAST 70 PERCENT OF VINYL HALIDE UNITS AND UP TO 30 PERCENT OF COPOLYMER UNITS; B. 5 TO 15 PERCENT BY WEIGHT OF AN ELASTOMER THAT IS THE PRODUCT OBTAINED BY GRAFTING AN LKYL METHACRYLATE AND STYRENE ONTO POLYBUTADIENE AND THAT CONTAINS 10 TO 40 PERCENT OF STYRENE UNITS, 15 TO 30 PERCENT OF ALKYL METHACRYLATE UNITS, AND 40 TO 65 PERCENT OF BUTADIENE UNITS; AND C. 5 TO 15 PERCENT BY WEIGHT OF A THERMOPLASIC RESIN THAT IS A STYRENE-ACRYLONITRILE COPOLYMER THAT CONTAINS FROM 50 TO 90 PERCENT OF STYRENE, METHYLSTYRENE, ETHYLSTYRENE, MONOCHLOROSTYRENE, OR METHOXYSTYRENE UNITS AND 10 TO 50 PERCENT BY WEIGHT OF ACRYLONITRILE, METHACRYLONITRILE, ETHACRYLONITRILE, OR CHLOROACRYLONITRILE UNITS.
Claim 2
Dependent Claim
143 words
AN IMPACT-RESISTANT RESINOUS COMPOSITION CONSISTING ESSENTIALLY OF A. 70 TO 90 PERCENT BY WEIGHT OF A VINYL HALIDE RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL HALIDES AND COPOLYMERS THAT CONTAIN AT LEAST 70 PERCENT OF VINYL HALIDE UNITS AND UP TO 30 PERCENT OF COPOLYMER UNITS; B. 5 TO 15 PERCENT BY WEIGHT OF AN ELASTOMER THAT IS THE PRODUCT OBTAINED BY GRAFTING AN LKYL METHACRYLATE AND STYRENE ONTO POLYBUTADIENE AND THAT CONTAINS 10 TO 40 PERCENT OF STYRENE UNITS, 15 TO 30 PERCENT OF ALKYL METHACRYLATE UNITS, AND 40 TO 65 PERCENT OF BUTADIENE UNITS; AND C. 5 TO 15 PERCENT BY WEIGHT OF A THERMOPLASIC RESIN THAT IS A STYRENE-ACRYLONITRILE COPOLYMER THAT CONTAINS FROM 50 TO 90 PERCENT OF STYRENE, METHYLSTYRENE, ETHYLSTYRENE, MONOCHLOROSTYRENE, OR METHOXYSTYRENE UNITS AND 10 TO 50 PERCENT BY WEIGHT OF ACRYLONITRILE, METHACRYLONITRILE, ETHACRYLONITRILE, OR CHLOROACRYLONITRILE UNITS.
Claim 3
Dependent Claim
47 words
An impact-resistant resinous composition as defined in claim 1 that consists essentially of a. 80 to 85 percent by weight of a vinyl halide resin, b. 10 to 15 percent by weight of said elastomer, and c. 5 to 10 percent by weight of said thermoplastic resin.
Claim 4
Dependent Claim
17 words
An impact-resistant resinous composition as defined in claim 1 wherein the vinyl halide resin is polyvinyl chloride.
Claim 5
Dependent Claim
52 words
An impact-resistant resinous composition as defined in claim 1 wHerein the elastomer is the product that is obtained by grafting methyl methacrylate and styrene onto polybutadiene and that contains 40 to 65 percent of butadiene units, 15 to 30 percent of methyl methacrylate units, and 10 to 40 percent of styrene units.
Claim 6
Dependent Claim
90 words
An impact-resistant resinous composition as defined in claim 1 that contains a. about 80 percent by weight of polyvinyl chloride, b. about 12 percent by weight of an elastomer that is the product that is obtained by grafting styrene and methyl methacrylate onto polybutadiene and that contains about 25 percent of methyl methacrylate units, 15 percent of styrene units, and 60 percent of butadiene units, and c. about 8 percent by weight of a styrene-acrylonitrile copolymer that contains about 75 percent of styrene units and 25 percent of acrylonitrile units.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |