Process for cross-linking polymers

Details Process for cross-linking polymers Process for cross-linking polymers

C - Chemistry, Metallurgy

08

K

402/2, 402/364,

C08K 5/32 (2006.01) C08F 8/30 (2006.01) C08F 255/02 (2006.01) C08J 3/24 (2006.01)

Patent

CA 1188042

ABSTRACT There is disclosed an improved process for cross-linking polymers by contacting said polymers with a cross-linking agent at an elevated temperature. The improvement comprises using as the cross-linking agent a compound of the formula Image wherein R1 and R2 are independently selected from the group consisting of alkyl groups having 1-22 carbon atoms, alkenyl groups having 2-22 carbon atoms, cyclohexyl groups having 6-20 carbon atoms, phenyl groups having 6-20 carbon atoms, aralkyl groups having 7-20 carbon atoms, alkyloxy groups having 1-22 carbon atoms, alkenyloxy groups having 2-22 carbon atoms, and cyclohexyloxy groups having 6-20 carbon atoms, all of which groups may be substituted or unsubstituted; R3 is selected from the group consisting of hydrogen, alkyl groups having 1-22 carbon atoms, alkenyl groups having 2-22 carbon atoms, cyclohexyl groups having 6-20 carbon atoms, phenyl groups having 6-20 carbon atoms, aralkyl groups having 7-20 carbon atoms, and Image wherein R4 is independently selected from the same group as R1 and R2 as defined above, all of which groups may be substituted or unsubstituted; provided that when R3 is hydrogen, R1 represents an alkyloxy, alkenyloxy or cyclohexyloxy group as defined above.

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