Patent ID: 11939466
Assignee: TORAY INDUSTRIES, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
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≤TCB′−TCB<20  (2);

|TCA−TCB|≥20  (3);

|TCA′−TCB′|≥20  (4),

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