Patent US4028433A successfully refreshed from Google Patents.
US4028433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic moulding compounds
Assignee: Bayer AG
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Filing: 1975-06-30
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Granted: 1977-06-07
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Expires: 1995-06-30
Abstract
Abstract A thermoplastic moulding composition comprising: 1. from 5 to 95 % by weight, based on component (1) and (2), of a polycarbonate of a divalent phenol, 2. from 95 to 5 % by weight, based on component (1) and (2), of a graft copolymer comprising A. at least one monovinyl aromatic compound, B. acrylonitrile and/or at least one acrylonitrile derivative, and optionally C. a vinyl or allyl compound, on an ethylene/vinyl acetate copolymer as a graft substrate, and 3. from 10 to 50 % by weight, based on the total moulding composition, of a brittle thermoplastic resin.
Inventors
- 👤 Richard Prinz
- 👤 Salah Elabd Elghani
- 👤 Winfried Fischer
- 👤 Heinrich Alberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:43
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/003; C08L57/00; C08L69/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A thermoplastic moulding composition comprising 1. from 5 to 95% by weight, based on component (1) and (2), of a polycarbonate of a divalent phenol, 2. from 95 to 5% by weight, based on component (1) and (2), of a graft copolymer comprising a. at least one monovinyl aromatic compound, b. acrylonitrile, an acrylonitrile derivative or a mixture thereof and optionally c. an α-olefin on an ethylene/vinyl acetate copolymer as a graft substrate, and 3. from 10 to 50% by weight, based on the total moulding composition of a brittle thermoplastic resin which is a copolymer of i. acrylonitrile, methacrylonitrile or any mixture thereof and ii. styrene, a styrene derivative or any mixture thereof.
Claim 2
Dependent Claim
114 words
A thermoplastic moulding composition comprising 1. from 5 to 95% by weight, based on component (1) and (2), of a polycarbonate of a divalent phenol, 2. from 95 to 5% by weight, based on component (1) and (2), of a graft copolymer comprising a. at least one monovinyl aromatic compound, b. acrylonitrile, an acrylonitrile derivative or a mixture thereof and optionally c. an α-olefin on an ethylene/vinyl acetate copolymer as a graft substrate, and 3. from 10 to 50% by weight, based on the total moulding composition of a brittle thermoplastic resin which is a copolymer of i. acrylonitrile, methacrylonitrile or any mixture thereof and ii. styrene, a styrene derivative or any mixture thereof.
Claim 3
Dependent Claim
26 words
A thermoplastic moulding composition as claimed in claim 1, in which the styrene derivative of (ii) is styrene substituted by alkyl or chlorine in the nucleus.
Claim 4
Dependent Claim
28 words
A thermoplastic moulding composition as claimed in claim 1, in which the thermoplastic resin has an intrinsic viscosity from 0.5 to 10.5, determined in dimethylformamide at 25° C.
References Cited (Backward Citations)
US3852394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |