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Patent US4297446A successfully refreshed from Google Patents.
US4297446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ABS-moulding compositions having high notched impact strength
Assignee: Bayer AG
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Filing: 1979-08-24
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Granted: 1981-10-27
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Expires: 1999-08-24
Abstract
Abstract ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 2.0% by weight (based on total mixture) of a silico urethane derivative to improve notched impact strength.
Inventors
- 👤 Christian Lindner
- 👤 Karl-Heinz Ott
- 👤 Bernhard Arnold
- 👤 Friedrich Kowitz
- 👤 Harald Oertel
- 👤 Dieter Kuhlmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; C08L; C08L55/00; C08L55/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A molding composition comprising (a) 5 to 70% by weight of at least one graft product made by graft polymerizing styrene, a mixture of styrene and acrylonitrile, a mixture of styrene and methylmethacrylate, or a mixture of styrene, acrylonitrile and methylmethacrylate onto a polybutadiene, a butadiene/styrene, or a butadiene/acrylonitrile rubber, (b) 95 to 30% by weight of a thermoplastic resin selected from the group consisting of polystyrene, polymerized styrene and methylmethacrylate and polymerized styrene, acrylonitrile and methylmethacrylate, and 0.05-2% by weight based on the total mixture of a silico urethane derivative which is the reaction product of an organofunctional silicone with a polyisocyanate.
Claim 2
Dependent Claim
103 words
A molding composition comprising (a) 5 to 70% by weight of at least one graft product made by graft polymerizing styrene, a mixture of styrene and acrylonitrile, a mixture of styrene and methylmethacrylate, or a mixture of styrene, acrylonitrile and methylmethacrylate onto a polybutadiene, a butadiene/styrene, or a butadiene/acrylonitrile rubber, (b) 95 to 30% by weight of a thermoplastic resin selected from the group consisting of polystyrene, polymerized styrene and methylmethacrylate and polymerized styrene, acrylonitrile and methylmethacrylate, and 0.05-2% by weight based on the total mixture of a silico urethane derivative which is the reaction product of an organofunctional silicone with a polyisocyanate.
Claim 3
Dependent Claim
46 words
A moulding composition according to claim 1, wherein the silico urethane derivative is made from an organo functional polydimethyl siloxane which has the recurring structural unit of the formula ##STR11## which contains as functional terminal groups primary and/or secondary OH-groups and/or primary and/or secondary amino groups.
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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |