Low cis-content polybutadiene rubber and composition and aromatic vinyl resin and manufacturing method thereof

摘要

This invention discloses a low cis polybutadiene rubber and its method of preparation; wherein the low cis polybutadiene rubber has a wide molecular weight distribution range, and the aromatic vinyl resin using the low cis polybutadiene rubber as the toughening agent has markedly improved impact resistance and gloss. This invention further relates to an aromatic vinyl resin and a production process thereof, wherein the process for producing the aromatic vinyl resin comprises the steps of directly blending a polymer solution with linear butadiene-styrene copolymer and a polymer solution with low cis polybutadiene rubber with the aromatic vinyl Matrix monomers and then carrying out a bulk polymerization, to obtain the aromatic vinyl resin. The process simplifies the process, shortens the process flow and the advantage is the reduction of energy consumption throughout the process. It is more desirable that the aromatic vinyl resin produced by the process of the present invention exhibit markedly improved gloss and impact resistance.