Patent ID: 8669339
Filing Date: 2014-03-11
Classification: C08C,C08F,C08L

Abstract:
1. A polybutadiene characterized in that (1) content of 1,2-structure in the polybutadiene is 4 to 30%, (2) content of cis-1,4-structure in the polybutadiene is 65 to 95%, and (3) content of trans-1,4-structure in the polybutadiene is 5% or less, a ratio (Tcp/ML 1+4 ) of a 5% toluene solution viscosity (Tcp) measured at 25° C. and a Mooney viscosity (ML 1+4 ) at 100° C. is 2.0 or higher, a molecular weight distribution (Mw/Mn) is 2.80 or less, a gel content is 0.06 wt % or less, and an APHA color is 20 or less, wherein the polybutadiene is a product produced by a polymerization process in which a polymerization inhibitor is added to a polybutadiene solution, thereby to stop a polymerization in a stirring state where polymerization inhibitor particles each having a particle size of 135 mm or less are dispersed in the polybutadiene solution.