Urethane elastomer for printing belts

Details Urethane elastomer for printing belts Urethane elastomer for printing belts

C - Chemistry, Metallurgy

08

G

402/138, 402/160

C08G 18/42 (2006.01) B41N 1/22 (2006.01) C08G 18/10 (2006.01) C08G 18/76 (2006.01)

Patent

CA 1208232

URETHANE ELASTOMER FOR PRINTING BELTS ABSTRACT A process for making an elastomer for use in printing/drive belts is disclosed wherein a mixture of approximately 2 equivalents of toluene diisocyanate consist- ing of about 88 wt.% of the 2,4 isomer and 12 wt.% of the 2,6 isomer is reacted with a polyether or polyester having difunctional primary hydroxyl groups to form a prepolymer. The prepolymer is then reacted with a diamine curing agent to form the elastomer.

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