Title:
SUSPENSION POLYMERIZATION OF SYNDIOTACTIC-1,2-POLYBUTADIENE
Document Type and Number:
Japanese Patent JPH0625312
Kind Code:
A
Abstract:
PURPOSE: To obtain a particulate syndiotactic 1,2-polybutadiene (SPB) by a suspension polymerization method.
CONSTITUTION: A cobalt compound, a trialkyl aluminum, and 1.3-butadiene are reacted in an organic solvent, aged, dispersed in water containing a dispersing agent such as polyvinyl alcohol dissolved or suspended therein, and subsequently mixed with carbon disulfide to subject the 1,3-butadiene to a 1,2-polymerization. Therein, a solvent, such as methylene chloride, having a specific gravity of ≥1.1 is added to the polymerization system.
Inventors:
MOTOYUKI KANICHI
SUZUKI MICHINORI
AKIGAWA KAZUHIRO
SUZUKI MICHINORI
AKIGAWA KAZUHIRO
Application Number:
JP27428892A
Publication Date:
February 01, 1994
Filing Date:
October 13, 1992
Export Citation:
Assignee:
UBE INDUSTRIES
International Classes:
C08F2/18; C08F2/44; C08F4/60; C08F4/70; C08F36/06; (IPC1-7): C08F2/18; C08F2/44; C08F4/70; C08F36/06
Next Patent: JPH0625313