Irradiation process for the preparation of poly(vinyl chloride-g

Details Irradiation process for the preparation of poly(vinyl chloride-g Irradiation process for the preparation of poly(vinyl chloride-g

1977-08-25

1978-08-22

Turer, Richard B.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

260877, 260884, C08F 800

Patent

active

041087496

ABSTRACT:
Disclosed is a process for the preparation of a graft copolymer comprising a PVC backbone and graft branches formed from cationically polymerizable monomers such as styrene, isoprene, butadiene and in particular, isobutylene. The process includes the steps of irradiating the PVC resin to form reactive sites thereon, dissolving the irradiated resin in a suitable solvent, adding a monomeric charge of isobutylene and a catalytic amount of an alkylaluminum compound to polymerize a plurality of polyisobutylene branches from the reactive sites, subsequently terminating the reaction and separating the graft copolymer.

REFERENCES:
patent: 3281345 (1966-10-01), Kuhne
patent: 3359193 (1967-12-01), Pinner
patent: 3433724 (1969-03-01), Chapiro et al.
patent: 3904708 (1975-09-01), Kennedy et al.
patent: 3933942 (1976-01-01), Kennedy et al.
Kennedy et al., Journal of Polymer Science Chem. Ed., vol. 14, pp. 153-157, (1976).

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