Abstract An impact resistant nitrogenous polymer comprises a multiphase amine-reactive moiety-containing polymer grafted to a polycarbonamide containing recurring amide linkages as anintegral part of the polymer chain; the grafting, by reaction of an amine-reactive moiety of the polymer with an amine end group of the polycarbonamide. Preferably the amine-reactive moiety-containing polymer is a multiphase carboxylic acid-containing polymer comprising (A) a first elastomer phase that is preferably polymerized from monomers comprising: 50 to 99.9 parts by weight alkyl acrylate wherein the alkyl group contains 1 to 15 carbon atoms, butadiene or substituted butadiene; 0 to 40 parts by weight of other ethylenically unsaturated monomers; 0 to 5 parts by weight of a polyethylenically unsaturated crosslinking monomer; and 0 to 5 parts by weight of a graft-linking monomer; and (B) a final rigid thermoplastic stage containing amine-reactive carboxylic acid groups and polymerized from monomers comprising, 1 to 50 parts by weight of a copolymerizable carboxylic acid; 50 to 99 parts by weight of a member selected from the group consisting of alkyl methacrylates, styrenes, acrylonitrile, methacrylonitrile and olefins that, when homopolymerized, form polymers having a heat distortion temperature greater than about 20° C.; 0 to 49 parts by weight of another acrylic monomer; and 0 to 40 parts of another copolymerizable ethylenically unsaturated monomer. The impact resistant nitrogenous polymer is characterized by superior hot strength that renders the polymer extrudable, blow moldable, and injection moldable.
A multi-phase polymer for modifying polycarbonamides comprising (A) a first elastomeric phase having a glass temperature less than 25° C. and polymerized from monomers comprising a major amount of an alkyl acrylate, a polyunsaturated crosslinking monomer having a plurality of addition polymerizable unsaturated groups, each of which participates in the polymerization reaction at about the same rate as one another, a graftlinking monomer having two or more addition polymerizable unsaturated reactive groups which participate in the polymerization reaction at substantially different rates, and (B) a final rigid phase having a glass temperature above 50° C. and containing amine-reactive carboxylic acid groups and polymerized from monomers comprising a major amount of a styrene and a minor amount of a copolymerizable carboxylic acid.
Claim 2
Dependent Claim
121 words
A multi-phase polymer for modifying polycarbonamides comprising (A) a first elastomeric phase having a glass temperature less than 25° C. and polymerized from monomers comprising a major amount of an alkyl acrylate, a polyunsaturated crosslinking monomer having a plurality of addition polymerizable unsaturated groups, each of which participates in the polymerization reaction at about the same rate as one another, a graftlinking monomer having two or more addition polymerizable unsaturated reactive groups which participate in the polymerization reaction at substantially different rates, and (B) a final rigid phase having a glass temperature above 50° C. and containing amine-reactive carboxylic acid groups and polymerized from monomers comprising a major amount of a styrene and a minor amount of a copolymerizable carboxylic acid.