Title:
FLAME-RETARDANT POLYAMIDE RESIN COMPOSITION AND MOLDED ARTICLE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2022/191078
Kind Code:
A1
Abstract:
[Problem] To provide a flame-retardant polyamide resin composition that is suitable for a molded component having a thin-wall portion such as a hinge portion, that has excellent flame retardancy, and from which it is possible to mold a molded article having excellent bending durability at the hinge portion. [Solution] This flame-retardant polyamide resin composition is characterized by: containing a polyamide resin (A) and a melamine cyanurate (B) at a proportion of 97.5-93 parts by mass and 2.5-7 parts by mass, respectively; containing, with respect to a total of 100 parts by mass of said components (A) and (B), 0.01-2 parts by mass of a hypophosphorous acid metal salt (C), a lubricant (D), a phosphorus-based antioxidant (E), and a phenol-based antioxidant (F); and satisfying the requirements described in (i)-(iii). (i) 10 ≤ Terminal amino group concentration (eq/ton) of polyamide resin (A) ≤ 39
(ii) Melt flow rate (275°C, 1 kgf) ≥ 40
(iii) 236°C ≤ Temperature-lowered crystallization temperature (Tc2) ≤ 242°C
Inventors:
IWAMURA KAZUKI (JP)
ISHIHARA AYUMI (JP)
YOSHIMURA NOBUHIRO (JP)
ISHIHARA AYUMI (JP)
YOSHIMURA NOBUHIRO (JP)
Application Number:
PCT/JP2022/009488
Publication Date:
September 15, 2022
Filing Date:
March 04, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08K3/32; C08L77/00; C08K5/13; C08K5/3477; C08K5/524
Domestic Patent References:
| WO2021044880A1 | 2021-03-11 |
Foreign References:
| JP2017082203A | 2017-05-18 | |||
| JPH0718179A | 1995-01-20 | |||
| JP2016176060A | 2016-10-06 | |||
| JPH11106644A | 1999-04-20 | |||
| JP2014509342A | 2014-04-17 |
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