Richard C Wolf

US Patent:

45365270, Aug 20, 1985

Filed:

May 7, 1984

Appl. No.:

6/607833

Inventors:

Wilfred L. Shearer - Mountainside NJ
Stephen M. Sinker - Lebanon NJ
Richard A. Wolf - Plainfield NJ

Assignee:

Celanese Corporation - New York NY

International Classification:

C08K 513
C08K 524
C08L 6702

US Classification:

524193

Abstract:

There is provided an improved molding resin capable of being molded into an article exhibiting reduced tendency to corrode a copper surface when the molded resin and the copper surface are placed in spaced relationship in a common unventilated atmosphere at elevated temperatures, as measured by the Bell Telephone Laboratories Copper Corrosion Test at temperatures within the range of from 150. degree. to 175. degree. C. , wherein the molding resin comprises the combination of (a) a butyleneterephthalate polyester comprising a brominated copolyester as a polymeric flame retardant comprising aromatic halogen groups in a flame retardant amount, and (b) an alkylhydroxyphenylalkanoyl-hydrazine in an amount that is within the range of from 0. 05 to 0. 3% by weight.

US Patent:

44698348, Sep 4, 1984

Filed:

May 11, 1983

Appl. No.:

6/493455

Inventors:

Wilfred L. Shearer - Mountainside NJ
Stephen M. Sinker - Lebanon NJ
Richard A. Wolf - Plainfield NJ

Assignee:

Celanese Corporation - New York NY

International Classification:

C08K 513
C08K 524
C08L 6702

US Classification:

524193

Abstract:

There is provided an improved molding resin capable of being molded into an article exhibiting reduced tendency to corrode a copper surface when the molded resin and the copper surface are placed in spaced relationship in a common unventilated atmosphere at elevated temperatures, as measured by the Bell Telephone Laboratories Copper Corrosion Test at temperatures within the range of from 150. degree. to 175. degree. C. , wherein the molding resin comprises the combination of (a) a poly(butylene terephthalate) based polymer and aromatic halogen groups in a flame retardant amount, and (b) an alkylhydroxyphenylalkanoyl-hydrazine in an amount that is within the range of from 0. 05 to 0. 6% by weight, based on the weight of the molding resin, and less than 0. 8% by weight based on the polymer.