Inventors:
Biau-Hung Chang - Cincinnati OH
Leslie Wild - Wyoming OH
James A. Hinnenkamp - Cincinnati OH
Assignee:
Quantum Chemical Corporation - Cincinnati OH
International Classification:
C08F25502
Abstract:
A process for making a graft propylene copolymer in which a propylene polymer, selected from the group consisting of propylene homopolymers and propylene copolymers, is contacted with a polymerizable, unsaturated carboxylic acid or acid derivative in the presence of a coagent, said coagent selected from the group consisting of a first compound having the structural formula ##STR1## where R is a hydrocarbyl or a radical containing at least one atom of oxygen, sulfur, nitrogen, phosphorus or silicon; R. sup. 1 is hydrogen or C. sub. 1 -C. sub. 12 alkyl or aryl; and x is an integer of 1 to 4, and a second compound having the structural formula ##STR2## where R' is a hydrocarbyl or a radical containing at least one atom of oxygen, sulfur, nitrogen, phosphorus or silicon; R. sup. 2 is hydrogen or C. sub. 1 -C. sub. 1 2 alkyl or aryl; and y is an integer of 2 to 4, and a free radical generating compound.