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US4857591A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermoplastic moulding compositions of ABS and hydrogenated nitrile rubber

Assignee: Bayer AG
•
Filing: 1987-06-22
•
Granted: 1989-08-15
•
Expires: 2007-06-22
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Abstract

Abstract Thermoplastic moulding compositions consisting of I. 75 to 99.5% by weight of a polymer of A. 0 to 95% by weight, 95% or less by weight; of a graft copolymer prepared by grafting polymerization of A.1 5 to 95% by weight of a mixture of A.1.1 50 to 95% by weight of styrene, α-methylstyrene, nuclear-substituted styrene, methyl methacrylate or mixtures thereof and A.1.2 50 to 5% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof on A.2 95 to 5% by weight of a rubber with a glass transition temperature Tg or <0°C., and B. 100 to 5% by weight of a thermoplastic polymer of B.1 95 to 50% by weight of styrene, α-methylstyrene, nuclear-substituted styrene or methyl methacrylate or mixtures thereof and B.2 5 to 50% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof and II. 25 to 0.5% by weight of a hydrogenated nitrile rubber.

Inventors

  • 👤 Herbert Eichenauer
  • 👤 Hartmuth Buding
  • 👤 Joachim Doring
  • 👤 Rudolf Casper
  • 👤 Karl-Heinz Ott

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 11:12
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L55/00; C08L55/02

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 149 words
A thermoplastic moulding composition comprising I. 75 to 99.5% by weight of A. 95% or less by weight of a graft copolymer prepared by graft polymerization of A.1 5 to 95% by weight of a mixture of A.1.1 50 to 95% by weight of styrene, α-methylstyrene, nuclear-substituted styrene, methyl methacrylate or mixtures thereof and A.1.2 50 to 5% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof on A.2 95 to 5% by weight of a rubber with a glass transition temperature, Tg, of <0° C., and B. 100 to 5% by weight of a thermoplastic polymer of B.1 95 to 50% by weight of styrene, α-methylstyrene, nuclear-substitued styrene or methyl methacrylate or mixtures thereof and B.2 5 to 50% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof and II. 25 to 0.5% by weight of a hydrogenated nitrile rubber.
Claim 2
Dependent Claim 149 words
A thermoplastic moulding composition comprising I. 75 to 99.5% by weight of A. 95% or less by weight of a graft copolymer prepared by graft polymerization of A.1 5 to 95% by weight of a mixture of A.1.1 50 to 95% by weight of styrene, α-methylstyrene, nuclear-substituted styrene, methyl methacrylate or mixtures thereof and A.1.2 50 to 5% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof on A.2 95 to 5% by weight of a rubber with a glass transition temperature, Tg, of <0° C., and B. 100 to 5% by weight of a thermoplastic polymer of B.1 95 to 50% by weight of styrene, α-methylstyrene, nuclear-substitued styrene or methyl methacrylate or mixtures thereof and B.2 5 to 50% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof and II. 25 to 0.5% by weight of a hydrogenated nitrile rubber.
Claim 3
Dependent Claim 32 words
A moulding composition according to claim 1, consisting of 80 to 99% by weight of the polymer of component I. and 20 to 1% by weight of the rubber of component II.
Claim 4
Dependent Claim 56 words
A moulding composition according to claim 1, in which the copolymer of component I., consists of 5 to 80% by weight of the graft copolymer of component A and 95 to 20% by weight of the thermoplastic polymer of component B, the percentages by weight being relative to the total weight of components A and B.
Claim 5
Dependent Claim 38 words
A moulding composition according to claim 1, in which the polymer component B is a copolymer of styrene, α-methylstyrene, or mixtures thereof with acrylonitrile or a copolymer of styrene, α-methylstyrene or mixtures thereof with acrylonitrile and methyl methacrylate.

References Cited (Backward Citations)

US4350796A Cited
EP0129796A2 Cited
EP0129815A2 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-08-14 1993-02-13 1993-08-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-08-14 1997-02-13 1997-08-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-08-14 2001-02-13 2001-08-15 $7700.00 Window Closed / Lapsed

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