# US 11,999,850 B2 · Glass-fiber-reinforced polyamide resin composition and molded product for vehicle interior or vehicle exterior made therefrom

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- Number: US 11,999,850 B2
- Document ID: US11999850B2
- Status: Granted
- Kind: B2
- Application number: 17/421,847
- Filed: 2020-02-12
- Published: 2022-03-31
- Granted: 2024-06-04
- Earliest claimed: 2019-02-18
- Assignees: TOYOBO MC Corporation
- Applicants: TOYOBO MC Corporation
- Inventors: Nobuhiro Yoshimura; Ryo Umeki
- Web page: https://patentgrep.com/patent/US11999850B2

## CPC

- C08J 5/043: {with glass fibres}
- C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence)
- C08K 3/04: Carbon
- C08K 3/105: Compounds containing metals of Groups 1 to 3 or of Groups 11 to 13 of the Periodic Table
- C08K 3/346: {Clay}
- C08K 7/14: Glass
- C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence)
- C08J 2377/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08J2377/10 takes precedence)
- C08J 2377/06: Polyamides derived from polyamines and polycarboxylic acids (C08J2377/10 takes precedence)
- C08K 2003/085: {Copper}
- C08L 2205/02: containing two or more polymers of the same C08L -group
- C08L 2205/03: containing three or more polymers in a blend
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## 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

### Claim 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.

### Claim 2 (depends on 1)

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

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 3)

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.