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.
A maleic anhydride adduct of a hydrogenated polymer of one or more conjugated dienes or 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.
Claim 2
Dependent Claim
51 words
A maleic anhydride adduct of a hydrogenated polymer of one or more conjugated dienes or 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.
Claim 3
Dependent Claim
16 words
The adduct of claim 1 containing from 0.1 to 25 percent by weight of maleic anhydride.
Claim 4
Dependent Claim
16 words
The adduct of claim 1 containing from 0.2 to 5 percent by weight of maleic anhydride.
Claim 5
Dependent Claim
13 words
The adduct of claim 1 wherein said hydrogenated polymer is a hydrogenated polybutadiene.
Claim 6
Dependent Claim
18 words
The adduct of claim 1 wherein said hydrogenated copolymer is a hydrogenated random copolymer of butadiene and styrene.
Claim 7
Dependent Claim
18 words
The adduct of claim 5 wherein said random copolymer contains up to 60 percent by weight of styrene.
Claim 8
Dependent Claim
36 words
The adduct of claim 1 wherein said hydrogenated copolymer is a hydrogenated block copolymer of butadiene and styrene, said hydrogenated block copolymer having a 1,2-microstructure content prior to hydrogenation of from about 7% to about 100%.
Claim 9
Dependent Claim
18 words
The adduct of claim 1 wherein said hydrogenated copolymer is a hydrogenated multiblock copolymer of butadiene and styrene.
Claim 10
Dependent Claim
14 words
The adduct of claim 8 wherein said multiblock copolymer is a styrene/butadiene/styrene block copolymer.