Process for preparing impact resistant polyvinyl aromatics

Details Process for preparing impact resistant polyvinyl aromatics Process for preparing impact resistant polyvinyl aromatics

1975-03-05

1976-10-12

Holler, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260878R, C08L 4304, C08L 8310, C08F25506, C08F28312

Patent

active

039858243

ABSTRACT:
The invention relates to novel impact resistant graft copolymers of a vinyl aromatic on an ethylene/propylene/tercomponent rubber especially characterized by an improved notched impact strength and resistance to atmospheric corrosion, and a process for their preparation. Said copolymers are obtained by a two-step mass/suspension polymerization process characterized by the presence of oxygen, preferably by the presence of air, at a pressure of from 0.05 to 10 atmospheres gauge during the course of the mass polymerization step.

REFERENCES:
patent: 3538190 (1970-11-01), Meredith et al.
patent: 3538191 (1970-11-01), Meredith et al.
patent: 3538192 (1970-11-01), Bishop, Sr.
patent: 3538193 (1970-11-01), Meredith
patent: 3642950 (1972-02-01), O'Shea
patent: 3663649 (1972-05-01), Wheeler, Jr.
patent: 3665052 (1972-05-01), Saam et al.
patent: 3678125 (1972-07-01), Saam et al.
patent: 3678126 (1972-07-01), Saam et al.

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