摘要:
A thermoplastic elastomer powder for powder slush molding, comprising an elastomer composition of an ethylene-α-olefin copolymer rubber and a polyolefin resin, wherein said elastomer composition has a complex dynamic viscosity η*(1) as measured at a frequency of 1 radian/sec in a dynamic viscoelasticity measurement at 250°C, of 1.5 x 10⁵ poise or less, a Newtonian viscosity index n calculated from the following formula by using the complex dynamic viscosity η*(1) at a frequency of 1 radian/sec and the complex dynamic viscosity η*(100) at a frequency of 100 radian/sec. of 0.67 or less: n = [logη*(1) - logη*(100)]/2.
摘要:
A poly(vinyl chloride) resin composition which contains a poly(vinyl chloride) resin and either hydrotalcites treated with perchloric acid or a mixture of at least two compounds selected from hydrotalcites treated with perchloric acid, hydrotalcites untreated with perchloric acid and a perchlorate but is free from organotin compounds and zinc, cadmium and lead salts of an organic acid is superior in thermal stability in processing, resistance to amines and hygienic safety.
摘要:
A poly(vinyl chloride) resin composition which contains a poly(vinyl chloride) resin and either hydrotalcites treated with perchloric acid or a mixture of at least two compounds selected from hydrotalcites treated with perchloric acid, hydrotalcites untreated with perchloric acid and a perchlorate but is free from organotin compounds and zinc, cadmium and lead salts of an organic acid is superior in thermal stability in processing, resistance to amines and hygienic safety.
摘要:
Disclosed is a polyvinyl chloride resin powder composition for rotational molding, which is prepared by dry-blending plasticizer and stabilizer with polyvinyl chloride resin followed by incorporating from 0.1 to 5 parts by weight, per 100 parts by weight of the polyvinyl chloride resin, of finely divided polyvinyl chloride resin having a viscosity average polymerization degree of from 2000 to 5000 into the resulting dry blend. Also disclosed is a method of producing a molded article by subjecting the composition to rotational molding. The composition has good powder flowability for rotational molding, and the molded article from the composition is free from pin holes and blocks on the surface thereof.
摘要:
An expandable poly(vinyl chloride) resin composition for use in powder molding process containing a granular poly(vinyl chloride) resin, a fine-granular poly(vinyl chloride) resin, a plasticizer, a stabilizer, a foaming agent and an alkyl phosphate gives by a powder molding process an expansion-molded article having remarkably strengthened foamed cells and free from the occurrence of surface unevenness caused by polyurethane backing.
摘要:
Disclosed is a polyvinyl chloride resin powder composition containing (A) a granular polyvinyl chloride resin and (B) a fine granular vinyl chloride copolymer resin containing a copolymer composed of a vinyl chloride monomer and a carbonyloxy group-containing vinyl monomer, along with a stabilizer and a plasticizer. The composition is suitable for powder molding to produce covering materials of automotive interiors.
摘要:
A thermoplastic elastomer powder for powder molding, comprising an elastomer composition of an ethylene-a-olefin copolymer rubber and a polyolefin resin, wherein the elastomer composition has a complex dynamic viscosity η*(1) as measured at frequency of 1 radian/sec. in dynamic viscoelasticity measurement at 250°C, of 1.5 x 10 5 poise or less, a Newtonian viscosity index n calculated from the following formula by using the complex dynamic viscosity η*(1) at a frequency of 1 radian/sec. and the complex dynamic viscosity η*(100) at a frequency of 100 radian/sec. of 0.67 or less, and a hardness (shore D) of 45 or less :
摘要:
A powder molding composition containing dry-blended polyvinyl chloride resin plasticizer and stabilizer, which is characterized in that there are blended therein 0.05 to 5 parts by weight of carboxylic acid barium salt having a melting point not lower than 250 °C and 0.01 to 5 parts by weight of zinc salt of fatty acid containing 10 or more carbon atoms, per 100 parts by weight said polyvinyl chloride resin. The composition of the invention is of excellent releasability and resistance to mold staining.