The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2024
Filed:
Jan. 21, 2020
Toyobo Co., Ltd., Osaka, JP;
Nobuhiro Yoshimura, Shiga, JP;
Ryo Umeki, Shiga, JP;
TOYOBO MC CORPORATION, Osaka, JP;
Abstract
The present invention provides a polyamide resin composition containing (A) a crystalline polyamide resin containing a polycapramide resin as a main component, (B) a semi-aromatic amorphous polyamide resin, and (C) an inorganic reinforcing material, wherein the polyamide resin composition contains, as the (C), (C-1) a glass fiber, (C-2) a wollastonite having a needle shape, and (C-3) an inorganic reinforcing material of a plate-like crystal; a mass ratio of the (B) to (A) satisfies 0.35≤(B)/(A)≤0.80; when a total content of the (A), (B), and (C) is 100 parts by mass, a content (parts) of each component satisfies 30≤(A)+(B)≤55; 10≤(B)≤23; 20≤(C-1)≤40; 8≤(C-2)≤25; 8≤(C-3)≤25; 45≤(C-1)+(C-2)+(C-3)≤70; and an amount of a carboxyl group in the polyamide resin composition is less than 120 meq/kg. The resin composition provides a molded article having excellent strength and rigidity, excellent surface appearance of the molded article, and further excellent weather resistance, even in continuous molding of the composition over a long period of time at a high cylinder temperature.