Mark Matlock

US Patent:

44278284, Jan 24, 1984

Filed:

Aug 20, 1982

Appl. No.:

6/410094

Inventors:

William L. Hergenrother - Akron OH
Mark G. Matlock - Decatur IL
Richard J. Ambrose - Erie PA

Assignee:

The Firestone Tire & Rubber Company - Akron OH

International Classification:

C08L 7700

US Classification:

525 66

Abstract:

Polymeric compositions having resistance to impact comprising (a) from about 50 to about 90 percent by weight of a polyamide having a number average molecular weight of at least 10,000 and (b) from about 10 to about 50 percent by weight of a maleic anhydride adduct of a hydrogenated polymer of one or more conjugated dienes or a hydrogenated copolymer of a conjugated diene and a vinyl aromatic hydrocarbon, said hydrogenated polymer or copolymer having a residual unsaturation content of from about 0. 5 to about 20% of its original unsaturation content prior to hydrogenation; wherein at least 5 percent by weight of components (a) and (b) are present in the form of a graft copolymer containing at least 20 percent of polyamide. The compositions exhibit especially advantageous properties, particularly high impact strength and are useful in a variety of molding applications such as molded bushings, gears, cams, valves and a variety of other products.

US Patent:

45088748, Apr 2, 1985

Filed:

Nov 4, 1983

Appl. No.:

6/548904

Inventors:

William L. Hergenrother - Akron OH
Mark G. Matlock - Decatur IL
Richard J. Ambrose - Erie PA

Assignee:

The Firestone Tire & Rubber Company - Akron OH

International Classification:

C08F 800
C08F29704

US Classification:

525285

Abstract:

Polymeric compositions having resistance to impact comprising (a) from about 50 to about 90 percent by weight of a polyamide having a number average molecular weight of at least 10,000 and (b) from about 10 to about 50 percent by weight of a maleic anhydride adduct of a hydrogenated polymer of one or more conjugated dienes or a hydrogenated copolymer of a conjugated diene and a vinyl aromatic hydrocarbon, said hydrogenated polymer or copolymer having a residual unsaturation content of from about 0. 5 to about 20% of its original unsaturation content prior to hydrogenation; wherein at least 5 percent by weight of components (a) and (b) are present in the form of a graft copolymer containing at least 20 percent of polyamide. The compositions exhibit especially advantageous properties, particularly high impact strength and are useful in a variety of molding applications such as molded bushings, gears, cams, valves and a variety of other products.