Crosslinking of polymers with azo-esters

Details Crosslinking of polymers with azo-esters Crosslinking of polymers with azo-esters

C - Chemistry, Metallurgy

08

J

402/364, 402/399

C08J 3/24 (2006.01) C08J 9/10 (2006.01) C08K 5/23 (2006.01)

Patent

CA 1132295

A B S T R A C T A method is provided for crosslinking polymers at temperatures above 170°C using azo-esters having the formula: Image (I) wherein R3 is -OOC-R. alkyl, cycloalkyl or aralkyl; R1 and R2 are independently selected from the group consisting of alkyl, cycloalkyl, aryl and aralkyl wherein each of the groups may have alkyl branching; R1 and R2 can join together to form R1R2 where the group is selected from -(CH2)4-, -(CH2)5-, alkyl- substituted tetramethylene, or alkylsubstituted pentamethylene; and R and R1 can join together to form RR1 where the group is selected from -CH2-CH2, -CH2-CH2-CH2-, alkylsubstituted -CH2-CH2- or alkylsubstituted -CH2-CH2-CH2-, and R is lected from the group consisting of H, lower alkyl, cycloalkyl, aryl and aralkyl.

314641

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