Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-05-14
1994-09-06
Jagannathan, Vasu S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525260, 525263, 525281, 525285, 525322, C08F25502
Patent
active
053448880
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, having the structural formula (CH.sub.2 .dbd.CR.sup.1 CR.sup.2 R.sup.3.sub.x R, where R.sup.1, R.sup.2 and R.sup.3 are the same or different and are hydrogen, hydrocarbyl, halogen or a heterocyclic radical; x is an integer of 2 to 4; and R is a radical containing at least one atom of oxygen, nitrogen, sulfur, phosphorus or silicon having a valence equal to the value of x, 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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Chang Biau-Hung
Hinnenkamp James A.
Kiang Webster W.
Wild Leslie
Baracka Gerald A.
Heidrich William A.
Jagannathan Vasu S.
Quantum Chemical Corporation
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