US4504624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process
Assignee: General Electric Co
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Filing: 1983-12-09
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Granted: 1985-03-12
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Expires: 2003-12-09
Abstract
Abstract A polymer mixture comprising polyvinyl chloride, an aromatic polycarbonate and a rubber like polymer, characterized in that the rubber like polymer is a graft copolymer which is built up from a rubber like main chain with predominantly alkyl acrylate units on which styrene, α-methylstyrene, acrylonitrile, methacrylic acid esters, acrylic acid esters or mixtures thereof have been grafted.
Inventors
- 👤 Jean M. H. Heuschen
- 👤 Jan Bussink
- 👤 Willem L. Sederel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:12
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L69/00; C08L51/00; C08L51/003; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
A polymer mixture comprising polyvinyl chloride, an aromatic polycarbonate and a rubber like polymer, characterized in that the rubber like polymer is a graft copolymer which is built up from a rubber like main chain with predominantly alkyl acrylate units on which styrene, α-methylstyrene, acrylonitrile, methacrylic acid esters, acrylic acid esters or mixtures thereof have been grafted.
Claim 2
Dependent Claim
57 words
A polymer mixture comprising polyvinyl chloride, an aromatic polycarbonate and a rubber like polymer, characterized in that the rubber like polymer is a graft copolymer which is built up from a rubber like main chain with predominantly alkyl acrylate units on which styrene, α-methylstyrene, acrylonitrile, methacrylic acid esters, acrylic acid esters or mixtures thereof have been grafted.
Claim 3
Dependent Claim
35 words
A polymer mixture as claimed in claim 1, characterized in that the mixture comprises 5-90% by weight of polyvinyl chloride, 10-95% by weight of aromatic polycarbonate, and 1-40% by weight of the rubber like polymer.
Claim 4
Dependent Claim
24 words
A polymer mixture as claimed in claim 1, characterized in that the aromatic polycarbonate has a weight averaged molecular weight between 10,000 and 20,000.
Claim 5
Dependent Claim
40 words
A polymer mixture as claimed in claim 1, characterized in that the rubber like polymer is built up from a core of predominantly rubber like alkylacrylate units around which one or more shells have been provided by a graft reaction.
Claim 6
Dependent Claim
36 words
A method of preparing a polymer mixture as claimed in claim 1, characterized in that the aromatic polycarbonate is first mixed with the rubber like polymer and the resulting mixture is mixed with the polyvinyl chloride.
Claim 7
Dependent Claim
11 words
Articles formed from the polymer mixture as claimed in claim 1.
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) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |