摘要:
A polyvinyl chloride resin composition for powder molding having amine resistance and resistance to mold staining, the composition having blended therein, per 100 parts by weight of polyvinyl chloride resin, (a) 0.1 to 10 parts by weight a stabilizer mixture of bartium and zinc carboxylic acid salts each having a melting point not lower than 250°C, the barium and zinc metallic weight ratio being 1:5 to 5:1, and (b) 0.1 to 10 parts by weight of metal perchlorate and/or perchlorate ion type hydrotalcite compound.
摘要:
The use of C 5 -C 8 alkyl group fatty acid metal soap, particularly a mixture of barium and zinc such metal soaps, to satibilize polyvinyl chloride powder molding compositions against mold staining. The compositions preferably also include magnesium compound stabilizer to improve amine resistance when the molded product is to have polyurethane foam formed in situ thereon.
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.