IP Library Granted Patent US 11,999,850
Granted Patent B2
US 11,999,850 · App. 17/421,847 · Granted Jun 4, 2024

Glass-fiber-reinforced polyamide resin composition and molded product for vehicle interior or vehicle exterior made therefrom

Inventors: Nobuhiro Yoshimura (Shiga, JP); Ryo Umeki (Shiga, JP)
Assignee: TOYOBO MC CORPORATION
C08L77/06C08L2205/02C08L2205/03
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Quick Facts
Patent No.
US 11,999,850
App. No.
17/421,847
Granted
Jun 4, 2024
Kind
B2
Abstract

The present invention aims to provide a glass-fiber-reinforced polyamide resin composition, characterized in that, the composition contains a crystalline aliphatic polyamide resin (A), an amorphous polyamide resin (B), an acrylic resin (C), mica (D), glass fiber (E) and a master batch of carbon black (F) in a ratio by mass of (17 to 30):(10 to 16):(3 to 8):(10 to 25):(20 to 50):(1 to 8), respectively, in that, a mass ratio of (A) and (B) ((B)/(A)) satisfies 0.50 to 0.61, and in that, the composition further contains a copper compound (G) in a rate of 0.005 to 1.0 part by mass when a total amount of the ingredients (A) to (F) is taken as 100 parts by mass. From the glass-fiber-reinforced polyamide resin composition, it is possible to obtain a molded product that is highly excellent in a surface appearance (textured surface uniformity) and has a weather resistance in a level being enough for maintaining an excellent surface appearance even after the weathering test.

Claims (4)

1. A glass-fiber-reinforced polyamide resin composition, comprising a crystalline aliphatic polyamide resin (A), an amorphous polyamide resin (B), an acrylic resin (C), mica (D), glass fiber (E) and a master batch of carbon black (F) in a ratio by mass of (17 to 30):(10 to 16):(3 to 8):(10 to 25):(20 to 50):(1 to 8), respectively, wherein a mass ratio of (A) and (B) ((B)/(A)) satisfies 0.50 to 0.61, and wherein the composition further comprises a copper compound (G) in an amount of 0.005 to 1.0 part by mass when a total amount of (A), (B), (C), (D), (E) and (F) is taken as 100 parts by mass.

2. The glass-fiber-reinforced polyamide resin composition according to claim 1 , wherein the amorphous polyamide resin (B) is a semi-aromatic polyamide.

3. A molded product for a vehicle interior or a vehicle exterior, wherein the product is made from the glass-fiber-reinforced polyamide resin composition according to claim 1 .

4. The molded product for the vehicle interior or the vehicle exterior according to claim 3 , wherein the product is at least one selected from the group consisting of an outer handle, an outer door handle, a wheel cap, a roof rail, a door mirror base, a room mirror arm, a sunroof deflector, a radiator fan, a radiator grill, a bearing retainer, a console box, a sun visor arm, a spoiler and a slide door rail cover.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2023
From: TOYOBO CO., LTD.
To: TOYOBO MC CORPORATION
Reel/Frame 063943/0294 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 9, 2021
From: YOSHIMURA, NOBUHIRO; UMEKI, RYO
To: TOYOBO CO., LTD.
Reel/Frame 056803/0448 →
Priority Claims (1)
JP 2019-026448 · Feb 18, 2019 · national
Continuity (1)
Related Publication 20220098407A1 · Mar 31, 2022