| abstract |
(57) [Summary] (Modified) [Structure] 1500 having a vinyl monomer selected from a diene, carboxylic acid vinyl ester or allyl ester, vinyl ether or allyl ether, and acrylate as a structural unit and having non-reactive groups at both ends ~ 20000 It is a low viscosity reactive liquid polymer having an average molecular weight of The vinyl monomer is polymerized by a solution polymerization method in the presence of a non-functional azo initiator or peroxide initiator, using methyl ethyl ketone, pentanone, alcohols, benzene or the like as a solvent. [Effect] A polymer with less odor and improved transparency. |