US 12,435,184 B2
Reinforced resin composition, molded product, and method of improving tensile strength at elevated temperatures
Hayato Kishigami, Tokyo (JP); and Mihoko Yamamoto, Tokyo (JP)
Assigned to ASAHI KASEI KABUSHIKI KAISHA, Tokyo (JP)
Appl. No. 17/755,007
Filed by ASAHI KASEI KABUSHIKI KAISHA, Tokyo (JP)
PCT Filed Oct. 21, 2020, PCT No. PCT/JP2020/039609
§ 371(c)(1), (2) Date Apr. 19, 2022,
PCT Pub. No. WO2021/079916, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 2019-192000 (JP), filed on Oct. 21, 2019.
Prior Publication US 2022/0389164 A1, Dec. 8, 2022
Int. Cl. C08G 69/26 (2006.01); C08J 5/04 (2006.01); C08L 71/12 (2006.01)
CPC C08G 69/26 (2013.01) [C08J 5/043 (2013.01); C08L 71/12 (2013.01); C08J 2377/06 (2013.01); C08J 2471/02 (2013.01); C08L 2203/20 (2013.01)] 17 Claims
 
1. A reinforced resin composition comprising:
(A) a polyamide comprising a dicarboxylic acid unit (a) containing a terephthalic acid unit in 60 to 100 mol %, and a diamine unit (b) containing an aliphatic diamine unit having a carbon number of 9 to 12 in 60 to 100 mol %;
(B) a polyamide comprising a dicarboxylic acid unit (c) containing an isophthalic acid unit in 60 to 100 mol %, and a diamine unit (d) containing an aliphatic diamine unit having a carbon number of 4 to 10 in 80 to 100 mol %;
(C) a polyphenylene ether; and
(D) an inorganic filler,
wherein the mass ratio of the component (C) with respect to 100 parts by mass of a sum of the component (A), the component (B), and the component (C) is from 20 to 50 parts by mass,
wherein the reinforced resin composition contains from 1 ppm to less than 200 ppm by mass of a transition metal, based on the total mass of the components (A), (B) and (C),
wherein ΔHTcMt expressed by the following expression is 10 J/g or more:
ΔHTcMt=ΔHTc×{(the mass of the reinforced resin composition)/(the mass of the matrix component in the reinforced resin composition)},
where ΔHTc is the enthalpy of crystallization of the reinforced resin composition measured by a DSC,
wherein ΔHMpMt expressed by the following expression is 35 J/g or less:
ΔHMpMt=ΔHMp×{(the mass of the reinforced resin composition)/(the mass of the matrix component in the reinforced resin composition)},
where ΔHMp is the enthalpy of fusion of the reinforced resin composition measured by the DSC, and
wherein the mass of the matrix component in the reinforced resin composition is measured by dissolving the reinforced resin composition in hexafluoro-2-propanol, filtering the solution to isolate an insoluble component, drying the insoluble component under vacuum to measure the mass of the insoluble component, and determining the mass of the matrix component by subtracting the mass of the insoluble component from the mass of the reinforced resin composition.