Novel products and process

Details Novel products and process Novel products and process

1974-12-05

1976-04-27

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4575H, 260 4575S, 260 4575T, 260 457P, 260 23EP, 260 23XA, C08J 906

Patent

active

039533859

ABSTRACT:
Cellular vinyl chloride polymers are prepared in the presence of a blowing agent and a diorganotin dimercaptide such as di-n-butyltin bis(dodecyl mercaptide). These organotin compounds are unique in that they activate the blowing agent to achieve maximum gas evolution at conventional processing temperatures while imparting a superior level of heat stability to the polymer. The dimercaptide is preferably employed in combination with a specified organotin derivative of a carboxylic acid, alcohol or phenol and/or metal salts of carboxylic acids containing between 4 and 18 carbon atoms wherein the metal is selected from Group IIB of the Periodic Table.

REFERENCES:
patent: 3197423 (1965-07-01), Ackerman
patent: 3293094 (1966-12-01), Narin et al.
patent: 3293108 (1966-12-01), Narin et al.
patent: 3321413 (1967-05-01), Riley, Jr. et al.
patent: 3424717 (1969-01-01), Gottlieb et al.
patent: 3503924 (1970-03-01), Pollack
patent: 3715333 (1973-02-01), Larkin

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