Polymerisation process

Details Polymerisation process Polymerisation process

C - Chemistry, Metallurgy

08

J

204/91.55

C08J 3/28 (2006.01) C08F 2/46 (2006.01) C08F 2/50 (2006.01)

Patent

CA 1120886

Abstract of the Disclosure Radically polymerisable compounds such as acrylic and methacrylic compounds are polymerised by irrad- iation with light having a wavelength from 200 to 500 nm in the presence of symmetrical azo compounds containing tertiary aliphatic hydrocarbon radicals bonded to the nitrogen azo atoms, the radicals each having a molecular weight of 71 to 97 and the poly- merisation temperature being kept below 100°C by control of the intensity of the light. The preferred azo-alkanes have the formula Image wherein either R1 represents a methyl group and R2 represents an ethyl or propyl group or R1 and R2 together represent a tetramethylene or pentamethylene group.

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