Aldehyde or imine oxygen scavengers for vinyl polymerizations

Details Aldehyde or imine oxygen scavengers for vinyl polymerizations Aldehyde or imine oxygen scavengers for vinyl polymerizations

C - Chemistry, Metallurgy

08

F

402/144, 402/195

C08F 4/00 (2006.01)

Patent

CA 1261538

- i - PATENT APPLICATION OF RONALD W. NOVAK and WILLIAM D. EMMONS for ALDEHYDE OR IMINE OXYGEN SCAVENGERS FOR VINYL POLYMERIZATIONS DN 83-65 MBF/day Abstract of the Disclosure Oxygen scavengers, especially for vinyl polymerizations, comprising an aldehyde or imine of the formula R3Qn wherein n is 1-4; R3 is an organic radical having a valence of 1-4 or hydrogen; Q is of the formula Image wherein A is 0 or NR4; R1, R2, and R4 are independently selecked C1-6 alkyl or aryl radlcals or mixtures thereof are disclosed. - ii - A preferred composition is a mixture of aldehydes which are the reaction product of (a) ethylene urea, (b) formaldehyde, (c) isobutyraldehyde, and (d) 2- ethylhexanal in a molar ratio of (a):(b) of 1:2 and of (a) to the sum of (c) and (d) of 1:2.

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