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

1992-04-06

1994-02-15

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...

525279, 525296, 525301, 525302, 525309, 525310, 525317, C08F25500, C08F27900

Patent

active

052868001

ABSTRACT:
Polyolefin graft copolymers are disclosed which comprise a polyolefin homopolymer or copolymer backbone polymer having a plurality of free radically polymerized polymeric segments chemically bonded as side chains. It has been found that the use of a borane-containing polyolefin comprising a copolymer of 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 free radical polymerization and copolymerization. Numerous free radical polymerizable monomers, such as methyl methacrylate, styrene, alpha-methylstyrene, acrylonitrile and the like, can be polymerized to yield high molecular weight graft copolymers. By this synthetic route, high graft efficiency is observed with only a very low concentration of homopolymer being produced.

REFERENCES:
patent: 3862102 (1975-01-01), Milkovich et al.
patent: 4638092 (1987-01-01), Ritter
patent: 4751276 (1988-06-01), Chung
patent: 4806581 (1989-02-01), Walker
patent: 5180788 (1993-01-01), Vroomans

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