Stabilized thermoplastic moulding compositions

Patent 4381359 Issued on April 26, 1983. Estimated Expiration Date:

September 16, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3305520

3509091

3756906

Moulding composition of a polycarbonate, a graft copolymer and a copolymer and moulded articles therefrom
Patent #: 3954905
Issued on: 05/04/1976
Inventor: Margotte , et al.

Thermoplastic blend composition
Patent #: 3963804
Issued on: 06/15/1976
Inventor: Yonemitsu , et al.

Stabilized polycarbonate composition
Patent #: 4066611
Issued on: 01/03/1978
Inventor: Axelrod

Cyclic phosphorous acid esters Patent #: 4252750
Issued on: 02/24/1981
Inventor: Buysch , et al.

Inventors

Application

No. 06/302797 filed on 09/16/1981

US Classes:

524/117, Oxygen ring atom558/85Acyclic divalent chalcogen single bonded directly to the ring phosphorus (e.g., cyclic phosphites, etc.)

Examiners

Primary: Hoke, Veronica P.

Attorney, Agent or Firm

Connolly and Hutz

International Classes

C08L 55/00 (20060101)
C08L 55/02 (20060101)
C08L 69/00 (20060101)
C08K 5/00 (20060101)
C08K 5/524 (20060101)
C08K 5/526 (20060101)

Foreign Application Priority Data

1979-07-19 DE

Abstract

Stabilized thermoplastic moulding compositions comprising (1) from 10 to 90 parts by weight of a polycarbonate, based on aromatic dihydroxy compounds; and (2) from 90 to 10 parts by weight of a mixture of (2.1) from 25 to 100 parts by weight of a graft copolymer of a monomer mixture of styrene, methyl methacrylate or acrylonitrile polymerized on a rubber; of (2.2) from 0 to 20 parts by weight of a butadiene polymer having a butadiene content of at least 5 parts by weight; and (2.3) from 0 to 75 parts by weight of a copolymer of styrene, ଱-methyl styrene, methyl methacrylate, acrylonitrile or methacrylonitrile; containing 0.01 to 3.0% by weight, based on the whole stabilized mixture, of at least one ester of phosphorous acid and an ortho- or para-substituted phenol or bisphenol, and a process for their production.