Patent DE431364C successfully refreshed from Google Patents.
Patent US4376843A successfully refreshed from Google Patents.
US4376843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Notched impact resistant vinyl chloride polymers
Assignee: Bayer AG
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Filing: 1981-06-05
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Granted: 1983-03-15
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Expires: 2001-06-05
Abstract
Abstract The invention relates to notched impact resistant thermoplastic moulding compositions obtained from 1. 1 to 99% by weight, preferably 10 to 95% by weight, especially 70 to 98% by weight, of a thermoplastic vinyl chloride polymer, and 2. 99 to 1% by weight, preferably 90 to 5% by weight, especially 2 to 30% by weight, or a particulate graft copolymer consisting of a nucleus (a) of a highly crosslinked diene rubber, a first covering (b) of a crosslinked acrylate rubber, and a second covering (c) of a polymer or copolymer of resin-forming monomers, viz. Styrene, α-methylstyrene, acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Inventors
- 👤 Christian Lindner
- 👤 Hans-Eberhard Braese
- 👤 Karl-Heinz Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:58
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08F; C08F285/00; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A notched impact resistant thermoplastic moulding composition of (I) 1.0 to 99% by weight of a thermoplastic vinyl chloride polymer, and (II) 99 to 1.0% by weight of a particulate graft polymer consisting of a core (a) of a highly cross-linked diene rubber, a first covering (b) of a cross-linked acrylate rubber, and a second covering (c) of a polymer or copolymer of at least one resin-forming monomer selected from the group consisting of styrene, α-methylstyrene, acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Claim 2
Dependent Claim
85 words
A notched impact resistant thermoplastic moulding composition of (I) 1.0 to 99% by weight of a thermoplastic vinyl chloride polymer, and (II) 99 to 1.0% by weight of a particulate graft polymer consisting of a core (a) of a highly cross-linked diene rubber, a first covering (b) of a cross-linked acrylate rubber, and a second covering (c) of a polymer or copolymer of at least one resin-forming monomer selected from the group consisting of styrene, α-methylstyrene, acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Claim 3
Dependent Claim
81 words
Thermoplastic moulding composition according to claim 1 of (I) 70 to 98% by weight of polyvinylchloride, and (II) 30 to 2% by weight of a particulate graft copolymer of (a) crosslinked polybutadiene rubber, a first covering (b) of a trialkylcyanurate crosslinked n-alkylacrylate rubber and a second covering (c) of a copolymer of styrene and acrylonitrile; the weight proportion of a:b being 10:90 to 50:50 and the proportion of (c) in the total graft compound being from 80 to 50% by weight.
References Cited (Backward Citations)
US3018268A
Cited
GB1039802A
Cited
US3651177A
Cited
US3445416A
Cited
US3644249A
Cited
US3636138A
Cited
US3907928A
Cited
US3956424A
Cited
US4078018A
Cited
US3994991A
Cited
US3959895A
Cited
US4041106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |