Process for producing vinyl graft copolymer resin

Details Process for producing vinyl graft copolymer resin Process for producing vinyl graft copolymer resin

1975-03-14

1977-08-09

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260884, 260885, C08L 3308

Patent

active

040411087

ABSTRACT:
A process for producing a high impact thermoplastic resin by graft polymerization of an acrylic rubber and a polymerizable vinyl monomer which comprises agglomerating acrylic rubber particles by stirring a mixture of the acrylic rubber latex and the polymerizable vinyl monomer in the presence of a coagulating agent, the particle size of the acrylic rubber particle agglomerate being adjusted to a range of 0.2 to 10 .mu., initiating graft polymerization in the presence of a free radical initiator, adding a surface active agent during the polymerization, continuing the polymerization until demulsification occurs while the particle size of the agglomerate of the acrylic rubber particles and grafted acrylic rubber particles is adjusted to a range of 0.2 to 10 .mu., and then completing the graft polymerization by suspension polymerization method. The process can give a vinyl graft copolymer resin having high gloss and excellent weather resistance without impairing its impact resistance.

REFERENCES:
patent: 3047534 (1962-07-01), Dyer et al.
patent: 3370105 (1968-02-01), De Bell et al.
patent: 3821329 (1974-06-01), Gallagher
patent: 3825621 (1974-07-01), Ford
patent: 3830878 (1974-08-01), Kato et al.
patent: 3875259 (1975-04-01), Yoshida et al.
patent: 3929933 (1975-12-01), Gallagher
patent: 3944630 (1976-03-01), Ide et al.

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