| 摘要 |
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 <IMAGE> where R is a hydrocarbyl or a radical containing at least one atom of oxygen, sulfur, nitrogen, phosphorus or silicon; R1 is hydrogen or C1-C12 alkyl or aryl; and x is an integer of 1 to 4, and a second compound having the structural formula <IMAGE> where R' is a hydrocarbyl or a radical containing at least one atom of oxygen, sulfur, nitrogen, phosphorus or silicon; R2 is hydrogen or C1-C1 2 alkyl or aryl; and y is an integer of 2 to 4, and a free radical generating compound. This contact occurs at a temperature above both the melting point of the propylene polymer and the decomposition temperature of the free radical generating compound.
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