Thermally stable, gamma radiation-resistant blend of polycarbona

Details Thermally stable, gamma radiation-resistant blend of polycarbona Thermally stable, gamma radiation-resistant blend of polycarbona

1994-11-23

1996-02-13

Buttner, David

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524107, 524109, C08K 5524, C08K 5529, C08L 6900, C08L 6702

Patent

active

054911796

ABSTRACT:
An improved thermoplastic molding composition containing polycarbonate and a polyester copolymer based on cyclohexane-dimethanol, ethylene glycol and phthalic acid is disclosed. Improved thermal stability and resistance to gamma-radiation results from the incorporation of a phosphite conforming to ##STR1## where n, m, p and r are integers, and where R is H, an alkyl or an aryl group and R.sub.3 denotes an alkyl or aryl group.

REFERENCES:
patent: 3794629 (1974-02-01), Eimers
patent: 4066617 (1978-01-01), Rawlings
patent: 4102859 (1978-07-01), Eimers
patent: 4786692 (1988-11-01), Allen et al.
patent: 5231124 (1993-07-01), Idel
patent: 5254610 (1993-10-01), Small, Jr. et al.

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