Process for the production of expandable ethylenically unsaturat

Details Process for the production of expandable ethylenically unsaturat Process for the production of expandable ethylenically unsaturat

1975-03-04

1978-03-21

Liebermann, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25R, 260 25B, 260 25H, 260 25HA, C08J 918, C08J 922

Patent

active

040803449

ABSTRACT:
Expandable ethylenically unsaturated polymer particles are produced by using in the process a suspension stabilizer comprising calcium carbonate particles having the surfaces thereof treated with resin acid. The method for the production of such expandable ethylenically unsaturated polymer particles from ethylenically unsaturated polymer particles includes suspending such particles in water and impregnating the particles with an organic expanding agent having a boiling point lower than the softening point of the polymer particles.

REFERENCES:
patent: 3615811 (1971-10-01), Barrett
patent: 3661810 (1972-05-01), Gahmig
patent: 3743611 (1973-07-01), Muroi et al.
patent: 3819546 (1974-06-01), Altares
patent: 3870663 (1975-03-01), Clemens et al.
patent: 3886100 (1975-05-01), Yasuda et al.
patent: 3888945 (1975-06-01), Arndt et al.
patent: 3900433 (1975-08-01), Taub et al.
Frisch et al., Plastic Foams, I Part II, p. 531.

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