Patent US3873641A successfully refreshed from Google Patents.
US3873641A
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Moulding compositions containing a mixture of a thermoplastic aromatic polycarbonate, a butadiene polymer and a copolymer based on ethylenically unsaturated monomers
Assignee: Bayer AG
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Filing: 1973-12-03
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Granted: 1975-03-25
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Expires: 1993-12-03
Abstract
Abstract Thermoplastic moulding compositions of 1. 70-30 % BY WEIGHT OF A THERMOPLASTIC, AROMATIC POLYCARBONATE AND 2. 30-70 % BY WEIGHT OF A MIXTURE OF 2.1. 10-40 PARTS BY WEIGHT OF A BUTADIENE POLYMER WITH BUTADIENE CONTENTS OF AT LEAST 5 % AND 2.2. 90-60 PARTS BY WEIGHT OF A COPOLYMER OF 2.2.1. 95-50 PARTS BY WEIGHT OF STYRENE, Alpha -METHYLSTYRENE, METHYLMETHACRYLATE OR MIXTURES THEREOF AND 2.2.2. 5-50 PARTS BY WEIGHT OF ACRYLONITRILE, METHACRYLONITRILE, METHYLMETHACRYLATE OR MIXTURES THEREOF, THE MOULDING COMPOSITIONS CONTAINING AT LEAST 5 % BY WEIGHT OF THE BUTADIENE POLYMER.
Inventors
- 👤 Dieter Margotte
- 👤 Karl-Heinz Ott
- 👤 Hermann Schirmer
- 👤 Gunther Kampf
- 👤 Gunter Peilstocker
- 👤 Hugo Vernaleken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:29
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L25/00; C08L25/02; C08L69/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A THERMOPLASTIC MOULDING COMPOSITION COMPRISING 1. 70-30% BY WEIGHT OF A THERMOPLASTIC AROMATIC POLYCARBONATE AND 2. 30-70% BY WEIGHT OF A MIXTURE OF A. 10-40 PARTS BY WEIGHT OF A BUTADIENE POLYMER HAVING A BUTADIENE CONTENT OF AT LEAST 30%, THE REMAINDER BEING STYRENE, ACRYLONITRILE, ACRYLIC ACID, METHACRYLIC ACID, A C1-C6 ALKYL ESTER OF ACRYLIC ACID, A C1-C6 ALKYL ESTER OF METHACRYLIC ACID, DIVINYLBENZENE OR A MIXTURE THEREOF AND B. 90-60 PARTS BY WEIGHT OF A COPOLYMER OF I. 95-50 PARTS BY WEIGHT OF STYRENE, A-METHYLSTYRENE, METHYLMETHACRYLATE OR A MIXTURE THEREOF AND II. 5-50 PARTS BY WEIGHT OF ACRYLONITRILE, METHACRYLONITRILE, METHYLMETHACRYLATE OR A MIXTURE THEREOF, SAID MOULDING COMPOSITION CONTAINING AT LEAST 5% BY WEIGHT OF SAID BUTADIENE POLYMER AND SAID THERMOPLASTIC AROMATIC POLYCARBONATE BEING A MIXTURE OF (1) 50-85% BY WEIGHT OF A POLYCARBONATE BASED ON A HALOGEN-FREE PHENOL AND (II) 15-50% BY WEIGHT OF A HALOGEN-CONTAINING POLYCARBONATE 0F THE FORMULA
Claim 2
Dependent Claim
151 words
A THERMOPLASTIC MOULDING COMPOSITION COMPRISING 1. 70-30% BY WEIGHT OF A THERMOPLASTIC AROMATIC POLYCARBONATE AND 2. 30-70% BY WEIGHT OF A MIXTURE OF A. 10-40 PARTS BY WEIGHT OF A BUTADIENE POLYMER HAVING A BUTADIENE CONTENT OF AT LEAST 30%, THE REMAINDER BEING STYRENE, ACRYLONITRILE, ACRYLIC ACID, METHACRYLIC ACID, A C1-C6 ALKYL ESTER OF ACRYLIC ACID, A C1-C6 ALKYL ESTER OF METHACRYLIC ACID, DIVINYLBENZENE OR A MIXTURE THEREOF AND B. 90-60 PARTS BY WEIGHT OF A COPOLYMER OF I. 95-50 PARTS BY WEIGHT OF STYRENE, A-METHYLSTYRENE, METHYLMETHACRYLATE OR A MIXTURE THEREOF AND II. 5-50 PARTS BY WEIGHT OF ACRYLONITRILE, METHACRYLONITRILE, METHYLMETHACRYLATE OR A MIXTURE THEREOF, SAID MOULDING COMPOSITION CONTAINING AT LEAST 5% BY WEIGHT OF SAID BUTADIENE POLYMER AND SAID THERMOPLASTIC AROMATIC POLYCARBONATE BEING A MIXTURE OF (1) 50-85% BY WEIGHT OF A POLYCARBONATE BASED ON A HALOGEN-FREE PHENOL AND (II) 15-50% BY WEIGHT OF A HALOGEN-CONTAINING POLYCARBONATE 0F THE FORMULA
Claim 3
Dependent Claim
136 words
30-70% by weight of a mixture of a. 10-40 parts by weight of a butadiene polymer having a butadiene content of at least 30%, the remainder being styrene, acrylonitrile, acrylic acid, methacrylic acid, a C1-C6 alkyl ester of acrylic acid, a C1-C6 alkyl ester of methacrylic acid, divinylbenzene or a mixture thereof and b. 90-60 parts by weight of a copolymer of i. 95-50 parts by weight of styrene, Alpha -methylstyrene, methylmethacrylate or a mixture thereof and ii. 5-50 parts by weight of acrylonitrile, methacrylonitrile, methylmethacrylate or a mixture thereof, said moulding composition containing at least 5% by weight of said butadiene polymer and said thermoplastic aromatic polycarbonate being a mixture of (I) 50-85% by weight of a polycarbonate based on a halogen-free phenol and (II) 15-50% by weight of a halogen-containing polycarbonate of the formula
Claim 4
Dependent Claim
136 words
30-70% by weight of a mixture of a. 10-40 parts by weight of a butadiene polymer having a butadiene content of at least 30%, the remainder being styrene, acrylonitrile, acrylic acid, methacrylic acid, a C1-C6 alkyl ester of acrylic acid, a C1-C6 alkyl ester of methacrylic acid, divinylbenzene or a mixture thereof and b. 90-60 parts by weight of a copolymer of i. 95-50 parts by weight of styrene, Alpha -methylstyrene, methylmethacrylate or a mixture thereof and ii. 5-50 parts by weight of acrylonitrile, methacrylonitrile, methylmethacrylate or a mixture thereof, said moulding composition containing at least 5% by weight of said butadiene polymer and said thermoplastic aromatic polycarbonate being a mixture of (I) 50-85% by weight of a polycarbonate based on a halogen-free phenol and (II) 15-50% by weight of a halogen-containing polycarbonate of the formula
Claim 5
Dependent Claim
22 words
A thermoplastic moulding composition as claimed in claim 1, in which the polycarbonate has a molecular weight of from 10,000 to 60,000.
Claim 6
Dependent Claim
34 words
A thermoplastic moulding composition as claimed in claim 1 wherein the butadiene polymer is a copolymer of 70 to 90 % by weight of butadiene and 10 to 30 % by weight of styrene.
Claim 7
Dependent Claim
35 words
A thermoplastic moulding composition as claimed in claim 1 wherein the butadiene polymer is a copolymer of 30 to 95 % by weight of butadiene and 70 to 5 % by weight of butyl acrylate.
Claim 8
Dependent Claim
34 words
A thermoplastic moulding composition as claimed in claim 1 wherein the butadiene polymer is a copolymer of 60 to 80 % by weight of butadiene and 40 to 20 % by weight of acrylonitrile.
References Cited (Backward Citations)
US3239582A
Cited
US3130177A
Cited
US3162695A
Cited
US3663471A
Cited
US3642946A
Cited
US3649716A
Cited
US3742088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |