Conjugated diene copolymer, process for producing the same,...

Details Conjugated diene copolymer, process for producing the same,... Conjugated diene copolymer, process for producing the same,...

C - Chemistry, Metallurgy

08

F

402/403, 400/516

C08F 236/04 (2006.01) G03F 7/00 (2006.01) G03F 7/033 (2006.01)

Patent

CA 1325694

ABSTRACT OF THE DISCLOSURE: A conjugated diene copolymer comprising (A) 40 to 90 mole % of a conjugated diene component, (B) 0. 5 to 10 mole % of an alpha,beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound com- ponent and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component wherein the intrinsic viscosity [?] of the copolymer as measured at 30°C in dimethylformamide is 0.01 to 3.0 dl/g, the width (.DELTA.Tg) of the endothermic transition temperature section determined by a differential scanning calorimetry is 45° to 120°C and the limit temperature (T1) on the lower temperature side of the endothermic transition temperature section is -40°C or less. This copolymer, when combined with a photopolymerizable unsaturated monomer and a photosensitizer, provides a photosensitive resin composition which is soluble in aqueous alkali solutions, has an excellent processability and a photocurability, has an excellent rubber elasticity and a transparency even after curing, and has excellent water resistance.

552696

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