Resin composition and automobile under-hood parts thereof
AssigneeAsahi Kasei Chemicals Corporation
InventorsKei Yamauchi, Osamu Fujii
Life of this patent
Estimating the term…
Abstract
A resin composition including 30 to 90% by mass of polyamide (A), 70 to 10% by mass of glass fibers (B), a copper compound (C) and a halogenated compound (D), wherein polyamide (A) has a sum of a terminal carboxyl group concentration and a terminal amino group concentration of 100 milliequivalents/kg or more and 200 milliequivalents/kg or less, the terminal carboxyl group concentration being higher than the terminal amino group concentration; glass fibers (B) have a fiber diameter of 10 to 20 μm and a weight average fiber length of 5 to 30 mm; the content of copper based on polyamide (A) is 30 ppm or more and 200 ppm or less; and the molar ratio of halogen to copper (halogen/copper) is more than 5 and not more than 25.
Claims14
A resin composition comprising from 30 to 90% by mass of a polyamide (A), from 70 to 10% by mass of glass fibers (B), a copper compound (C), and a halogenated compound (D), wherein:
- the polyamide (A) has a sum of a terminal carboxyl group concentration and a terminal amino group concentration of 100 milliequivalents/kg or more and 200 milliequivalents/kg or less and the terminal carboxyl group concentration is higher than the terminal amino group concentration;
- the glass fibers (B) have a fiber diameter from 10 to 20 μm, a weight average fiber length from 5 to 30 mm, and a twisted form;
- a content of copper based on polyamide (A) is 30 ppm or more and 200 ppm or less;
- a molar ratio of halogen to copper (halogen/copper) is more than 5 and not more than 25;
- the resin composition is in the form of pellets, and the glass fibers (B) have a weight average fiber length greater than the length of the pellets;
- and
- the halogenated compound (D) is present as particles having a particle size of 20 μm or less in the resin composition.
A molded article comprising from 30 to 90% by mass of a polyamide (A), from 70 to 10% by mass of glass fibers (B), a copper compound (C) and a halogenated compound (D), wherein:
- the polyamide (A) has a sum of a terminal carboxyl group concentration and a terminal amino group concentration of 100 milliequivalents/kg or more and 200 milliequivalents/kg or less and the terminal carboxyl group concentration is higher than the terminal amino group concentration;
- the glass fibers (B) have a fiber diameter from 10 to 20 μm and a weight average fiber length from 1.5 to 5 mm;
- the halogenated compound (D) is an iodine compound and has a particle size of 20 μm or less;
- a content of copper based on the polyamide (A) is 30 ppm or more and 200 ppm or less;
- and
- a molar ratio of halogen to copper (halogen/copper) is more than 5 and not more than 25.
Dependencies are inferred from the claim text.