Olefin graft copolymers prepared using borane-containing olefin

Details Olefin graft copolymers prepared using borane-containing olefin Olefin graft copolymers prepared using borane-containing olefin

1993-11-03

1995-03-28

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...

525268, 525279, 525296, 525301, 525309, 525310, 525317, 525302, 525316, C08F25500, C08F27902, C08F28900

Patent

active

054018056

ABSTRACT:
Graft copolymers are disclosed which comprise an olefin borane-containing homopolymer or copolymer backbone polymer having radically polymerized polymeric segments chemically bonded as side chains or as a chain end. A borane-containing diene homopolymer or a copolymer of a diene and/or at least one alpha-olefin having from about 2 to 22 carbon atoms copolymerized with another monomer containing organoborane functional groups can be used as a backbone polymer to prepare the graft copolymers of the present invention. Under oxidation conditions, the borane group becomes the reaction site for the radical polymerization and copolymerization. Radical polymerizable monomers, such as methyl methacrylate, styrene, alpha-methylstyrene, acrylonitrile and the like, can be polymerized to yield high molecular weight graft copolymer. By this synthetic route, high graft efficiency is observed with only a very low concentration of homopolymer being produced.

REFERENCES:
patent: 5247023 (1993-09-01), Chung et al.
patent: 5286800 (1994-02-01), Chung et al.

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