Graft polymers for use in engineering thermoplastic blends
AssigneeExxon Chemical Patents Inc.
InventorDekoninck Jean-Marc
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Abstract
Graft polymers for use as compatibilizers and/or modifiers for engineering thermoplastic compositions are provided comprising the reaction product of functionalized thermoplastic polymers with styrene-maleic anhydride copolymer. The functionalized thermoplastic polymers are based typically on polyolefin polymers and contain at least one functional group reactive either with styrene-maleic anhydride copolymer, or with direactive linking groups reactive with both of the functionalized thermoplastic polymer and styrene-maleic anhydride copolymer. The engineering thermoplastic compositions to be modified include polar engineering thermoplastics and the non-polar engineering thermoplastics based on styrene.
Claims7
An engineering thermoplastic composition, said composition excluding those comprising 50 wt % or greater styrene maleic anhydride copolymer as the engineering thermoplastic, comprising :
- (a) 5-95 wt % engineering thermoplastic at least partially compatible with styrene maleic anhydride copolymer ;
- (b) 0-95 wt % thermoplastic polymer ;
- and,
- (c) 2-50 wt % graft polymer comprising the reaction product of a functionalized thermoplastic polymer with styrene maleic anhydride copolymer.
Dependencies are inferred from the claim text.