Abstract: The invention provides a method of manufacturing polyolefin-polyamide resin composition, which method has a large amount of discharge and is capable of long-time running and excellent in productivity. The method of manufacturing polyolefin-polyamide resin compositions comprises melting and kneading, extruding, and drafted drawing or rolling (a) a polyolefin, (b) a polyamide, (c) a silane coupling agent, (d) JO a first antioxidant with a melting point of 70-170° C., and (e) a second antioxidant with a melting point of 180-300° C. to disperse the polyamide (b) in the form of fiber with an average fiber diameter of 1 ?m or less in the polyolefin (a) to finish the composition in the form of pellets.

Abstract: The invention provides a method of manufacturing polyolefin-polyamide resin composition, which method has a large amount of discharge and is capable of long-time running and excellent in productivity. The method of manufacturing polyolefin-polyamide resin compositions comprises melting and kneading, extruding, and drafted drawing or rolling (a) a polyolefin, (b) a polyamide, (c) a silane coupling agent, (d) a first antioxidant with a melting point of 70-170° C., and (e) a second antioxidant with a melting point of 180-300° C. to disperse the polyamide (b) in the form of fiber with an average fiber diameter of 1 ?m or less in the polyolefin (a) to finish the composition in the form of pellets.

Abstract: A process for producing polybutadiene of a high degree of polymerization having high 1,2 and cis-1,4 microstructure contents and a low trans-1,4 microstructure content, which comprises polymerizing 1,3-butadiene in the presence of a catalyst system composed of(1) a halogen-containing organoaluminum compound,(2) (a) a cobalt dithiocarbamate compound or (b) the reaction product of carbon disulfide, a secondary amine and a cobalt compound, and(3) water.The polybutadiene has for example(A) a 1,2 microstructure content of 7 to 50%,(B) a cis-1,4 microstructure content of at least 50%,(C) a trans-1,4-microstructure content of at most 5%,(D) an inherent viscosity, measured in toluene at 30.degree. C., of at least 1, and(E) a gel content of at most 0.3%.