Patent US3689598A successfully refreshed from Google Patents.
US3689598A
Expired / Lapsed
US
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Process for the manufacture of foils and sheets of molding compositions of tactic vinyl chloride homo and/or copolymers
Assignee: Dynamit Nobel AG
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Filing: 1969-10-02
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Granted: 1972-09-05
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Expires: 1989-10-02
Abstract
Abstract Molding composition containing tactic vinyl chloride homo or copolymer and 5 to 25 weight percent of at least one member selected from the group consisting of a binary copolymer of methyl methacrylate and 1 to 20 weight percent of another methacrylate or 1 to 10 weight percent of an acrylate each having an alcoholic moiety of two to 10, preferably two to four, carbon atoms; a graft copolymer of methyl methacrylate, butadiene and styrene; and a graft copolymer of acrylonitrile, butadiene and styrene. This molding composition has improved physical properties as compared to tactic vinyl chloride polymers alone.
Inventors
- 👤 Egon Bierwirth
- 👤 Robert Buning
- 👤 Harald Dorffurt
- 👤 Hans-Ewald Konermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:12
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A composition as claimed in claim 1 wherein said alcoholic moiety has two to four carbon atoms. 3 A film of the compositions claimed in claim 1.
Claim 2
Dependent Claim
16 words
A composition as claimed in claim 1 having 1 to 25 weight percent of additive a).
Claim 3
Dependent Claim
19 words
A composition as claimed in claim 1 having 5 to 25 weight percent of the additive (b) and/or (c).
Claim 4
Dependent Claim
16 words
A composition as claimed in claim 1 wherein said tactic vinyl chloride polymer is a homopolymer.
Claim 5
Dependent Claim
46 words
A composition as claimed in claim 1 wherein said tactic vinyl chloride polymer is a copolymer with at least one comonomer selected from the group consisting of 1,2-trans-dichloroethylene, trichloroethylene, tetrachloro ethylene, vinyl acetate, vinyl propionate, a vinyl ether, acrylonitrile, an acrylate, a methacrylate, ethylene and propylene.
Claim 6
Dependent Claim
27 words
A composition as claimed in claim 7 wherein said comonomer is present in a proportion of about 0.5 to 10 weight percent of said vinyl chloride polymer.
Claim 7
Dependent Claim
24 words
A composition as claimed in claim 1 wherein said tactic vinyl chloride polymer has a syndiotacticity of the chlorine thereof of about 68 percent.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |