	US 11,939,466 B2
	Thermoplastic polyester resin composition and molded article
Kohei Miyamoto, Nagoya (JP); Yusuke Tojo, Nagoya (JP); Makito Yokoe, Nagoya (JP); Kosuke Shirotani, Nagoya (JP); and Yasuo Maeda, Nagoya (JP)
Assigned to TORAY INDUSTRIES, INC., Tokyo (JP)
Appl. No. 17/267,991
Filed by TORAY Industries, Inc., Tokyo (JP)
PCT Filed Sep. 13, 2019, PCT No. PCT/JP2019/036056 § 371(c)(1), (2) Date Feb. 11, 2021, PCT Pub. No. WO2020/059651, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 2018-175503 (JP), filed on Sep. 20, 2018; application No. 2018-205386 (JP), filed on Oct. 31, 2018; application No. 2018-243939 (JP), filed on Dec. 27, 2018; application No. 2019-012697 (JP), filed on Jan. 29, 2019; and application No. 2019-046819 (JP), filed on Mar. 14, 2019.
Prior Publication US 2021/0332231 A1, Oct. 28, 2021
Int. Cl. C08L 67/02 (2006.01); B32B 15/085 (2006.01); B32B 15/09 (2006.01); B32B 27/18 (2006.01); B32B 27/20 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C08K 5/50 (2006.01); C08L 23/06 (2006.01); C08L 23/08 (2006.01); C08L 25/06 (2006.01); C08L 25/08 (2006.01); C08L 67/00 (2006.01); C08L 71/12 (2006.01); C08L 81/04 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01)

CPC C08L 67/02 (2013.01) [B32B 15/09 (2013.01); B32B 27/20 (2013.01); B32B 27/36 (2013.01); B32B 15/085 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 27/18 (2013.01); B32B 27/285 (2013.01); B32B 27/286 (2013.01); B32B 27/302 (2013.01); B32B 27/32 (2013.01); B32B 27/325 (2013.01); B32B 2270/00 (2013.01); B32B 2307/204 (2013.01); B32B 2457/00 (2013.01); C08K 5/50 (2013.01); C08L 23/06 (2013.01); C08L 23/08 (2013.01); C08L 23/0884 (2013.01); C08L 25/06 (2013.01); C08L 25/08 (2013.01); C08L 67/00 (2013.01); C08L 71/12 (2013.01); C08L 81/04 (2013.01)]

12 Claims

1. A thermoplastic polyester resin composition comprising:

100 parts by weight of (A) a non-liquid crystal thermoplastic polyester resin,

45 to 150 parts by weight of (B) a thermoplastic resin that is different from the non-liquid crystal thermoplastic polyester resin (A), that comprises at least one polyolefin resin (B-1) selected from polyethylene, polypropylene, polymethyl pentene and cyclic olefin polymers, and that has a dielectric loss tangent of not more than 0.005 when measured at a frequency of 5.8 GHz by the cavity resonance perturbation method,

2 to 20 parts by weight of (C) a compatibilizer having at least one reactive functional group selected from epoxy, acid anhydride, oxazoline, isocyanate, and carbodiimide groups, and

0.2 to 5 parts by weight of (D) at least one compound selected from tertiary amines, amidine compounds, organic phosphines and salts thereof, imidazoles, and boron compounds,

wherein the sum of the parts by weight of the thermoplastic resin (B) and the compatibilizer (C) is in the range of 50 to 150 parts by weight based on 100 parts by weight of (A), and the weight ratio (B)/(C) of the thermoplastic resin (B) to the compatibilizer (C) is in the range of 8 to 50, and

wherein the cold crystallization temperature measured by differential scanning calorimetry satisfies the following requirements (2) to (4):

3≤T_CB′−T_CB<20 (2);

|T_CA−T_CB|≥20 (3);

|T_CA′−T_CB′|≥20 (4),

wherein T_CA(° C.) is the cold crystallization temperature (T_CA) derived from the non-liquid crystal thermoplastic polyester resin (A) in the thermoplastic polyester resin composition, and T_CB(° C.) is the cold crystallization temperature (T_CB) derived from the polyolefin resin (B-1) in the thermoplastic polyester resin composition, and T_CA′ (° C.) is the cold crystallization temperature (T_CA′) observed when the measurement is performed on the component (A) alone, and T_CB′ (° C.) is the cold crystallization temperature (T_CB′) observed when the measurement is performed on the component (B-1) alone.