Polyamide resin composition and forming from the same

A melt blended polyamide resin composition comprising:

• (A) 100 parts by weight of nylon resin;
• (B) 5-150 parts by weight of at least one of a non-fibrous inorganic filler having an average particle diameter of 0.05-10 μm, and a fibrous inorganic filler, excluding glass fiber, having a fiber diameter of 0.05-10 μm;
• and
• (C) 0.05-10 parts by weight of an olefin anhydride which is at least one selected from the group consisting of maleic acid anhydride, itaconic acid anhydride, glutaconic acid anhydride, citoraconic acid anhydride and aconitic acid anhydride or a polymer of maleic acid anhydride melt kneaded together,
• wherein in a subsequent test, the amount of said polyamide resin component deposit remaining on said inorganic filler when the inorganic filler is recovered by dissolving the polyamide resin composition into hexafluoroisopropanol is at least 4 g/m2per unit surface area of the inorganic filler, as measured by the BET method.

A melt blended polyamide resin composition consisting essentially of:

• (A) 100 parts by weight of nylon resin;
• (B) 5-150 parts by weight of at least one inorganic filler selected from the group consisting of wollastonite, zeolite, sericite, kaolin, mica, clay, pyrophillite, bentonite, asbestos, talc, aluminum silicate;
• metal compounds selected from the group consisting of alumina, silicon oxide, magnesium oxide, zirconium oxide, titanium oxide, and iron oxide;
• carbonates selected from the group consisting of calcium carbonate, magnesium carbonate, and dolomite;
• sulfates selected from the group consisting of calcium sulfate and barium sulfate;
• hydroxides selected from the group consisting of magnesium hydroxide, calcium hydroxide and aluminum hydroxide;
• and other non-fibrous fillers selected from the group consisting of glass beads, ceramic beads, boron nitride, and silicon carbide,
• said filler having an average particle diameter of 0.05-10 μm, and
• (C) 0.05-10 parts by weight of an olefin anhydride which is at least one selected from the group consisting of maleic acid anhydride, itaconic acid anhydride, glutaconic acid anhydride, citoraconic acid anhydride and aconitic acid anhydride or a polymer of maleic acid anhydride, wherein in a subsequent test, the amount of said melt-kneaded polyamide resin component deposit remaining on said inorganic filler when said inorganic filler is recovered by dissolving the polyamide resin composition into hexafluoroisopropanol is at least 4 g/m2 per unit surface area of said inorganic filler, as measured by the BET method.

A melt blended polyamide resin composition consisting essentially of:

• (A) 100 parts by weight of nylon resin;
• (B) 5-150 parts by weight of at least one of a non-fibrous inorganic filler having an average particle diameter of 0.05-10 μm, and a fibrous inorganic filler, excluding glass fiber, having a fiber diameter of 0.05-10 μm;
• and
• (C) 0.05-10 parts by weight of an olefin anhydride which is at least one selected from the group consisting of maleic acid anhydride, itaconic acid anhydride, glutaconic acid anhydride, citoraconic acid anhydride and aconitic acid anhydride or a polymer of maleic acid anhydride,
• wherein in a subsequent test, the amount of said polyamide resin component deposit remaining on said inorganic filler when the inorganic filler is recovered by dissolving the polyamide resin composition into hexafluoroisopropanol is at least 4 g/m2 per unit surface area of the inorganic filler, as measured by the BET method.