초록 ▼

The thermoplastic polymeric molding composition of the invention has good moldability in shaping by injection molding, extrusion molding and compression molding and capable of giving shaped articles having good machinability in mechanical working such as cutting, grinding and latching. The compositi

The thermoplastic polymeric molding composition of the invention has good moldability in shaping by injection molding, extrusion molding and compression molding and capable of giving shaped articles having good machinability in mechanical working such as cutting, grinding and latching. The composition is compounded from 2 to 70 parts by weight of a thermoplastic polymer such as a polyamide resin and from 98 to 30 parts by weight of a metallic filler such as zinc powder and zinc oxide powder having a surface coated with a water repellent agent such as silane coupling agents, titanate coupling agents and silicone fluids in a specified amount. A part of the above mentioned particulate filler may optionally be replaced with a fibrous filler such as glass fibers and carbon fibers so that the shaped articles of the molding composition may be imparted with increased impact strength.

대표청구항 ▼

A thermoplastic polymeric molding composition which comprises: (A) from 2 to 70 parts by weight of a thermoplastic polymer as the matrix phase; (B) from 98 to 30 parts by weight of a metallic filler, of which the particles have a surface coated with a water repellent agent, the amount of the water r

A thermoplastic polymeric molding composition which comprises: (A) from 2 to 70 parts by weight of a thermoplastic polymer as the matrix phase; (B) from 98 to 30 parts by weight of a metallic filler, of which the particles have a surface coated with a water repellent agent, the amount of the water repellent agent being in the range from 0.01 to 5% by weight based on the metallic filler before coating therewith; (C) a polypropylene-based polymer which is selected from the group consisting of a low-molecular weight polypropylene containing carboxyl groups which have been introduced into the polypropylene by oxidation thereof, added in an amount in the range of from 0.1 to 2% by weight based on the total amount of the components (A) and (b); and a polypropylene modified by a monomer selected from the group consisting of unsaturated organic acids, anhydrides thereof, esters thereof and amides thereof, added in an amount in the range of 1 to 10% by weight based on the total amount of components (A) and (B); and wherein the metallic filler as the component (B) is a powder of zinc oxide.