公开(公告)号：US20250115757A1

公开(公告)日：2025-04-10

申请号：US18721593

申请日：2022-11-18

Applicant: Toray Industries, Inc.

Inventor： Yusuke Tojo ,  Kohei Miyamoto ,  Hideyuki Umetsu

IPC: C08L67/02 ,  C08J3/20 ,  C08K3/34 ,  C08K7/14

Abstract: A thermoplastic polyester resin composition includes 10 parts by weight or more and 80 parts by weight or less of a polyester resin (B) containing 50 to 90 mol % of a structure in which a terephthalic acid residue and a 1,4-cyclohexanedimethanol residue are bonded, with respect to 100 parts by weight of a polybutylene terephthalate-based resin (A), wherein the thermoplastic polyester resin composition has a melting point of 222° C. or more and 230° C. or less as measured using a differential scanning calorimeter at heating and cooling rates of 20° C./min, and has a cold crystallization temperature of 170° C. or more and 200° C. or less as measured under the same condition.

公开(公告)号：US12195584B2

公开(公告)日：2025-01-14

申请号：US17629063

申请日：2020-07-20

Applicant: Toray Industries, Inc.

Inventor： Yusuke Tojo ,  Kohei Miyamoto ,  Makito Yokoe

IPC: C08G63/181 ,  B32B15/09 ,  B32B27/36 ,  C08G63/123 ,  C08G63/127 ,  C08G63/183 ,  C08G63/50 ,  C08G63/91 ,  C08K3/013 ,  C08L63/00 ,  C08L67/02 ,  C08K7/14 ,  C08L23/06 ,  C08L25/06 ,  C08L69/00

Abstract: A thermoplastic polyester resin includes a residue of an aromatic dicarboxylic acid or an ester-forming derivative thereof and a residue of a diol or an ester-forming derivative thereof, as main structural units, wherein the thermoplastic polyester resin has a hydroxy group concentration of 0.050 mmol/g or less. The use of such a thermoplastic polyester resin enables production of a molded article having excellent mechanical properties and heat resistance, and a reduced dielectric loss tangent at a high frequency of 1 GHz or more.

公开(公告)号：US11345780B2

公开(公告)日：2022-05-31

申请号：US16608463

申请日：2018-06-20

Applicant: Toray Industries, Inc.

Inventor： Kenichi Okunaga ,  Yusuke Tojo ,  Makito Yokoe ,  Hideyuki Umetsu

IPC: C08L67/02 ,  C08L67/00 ,  C08G63/183 ,  C08G59/24 ,  C08G59/32 ,  C08G63/189 ,  C08K3/32 ,  C08K5/49 ,  C08K7/14 ,  C08K9/04 ,  C08L63/04 ,  C08L101/06

Abstract: A thermoplastic polyester resin composition includes a thermoplastic polyester resin (A), an epoxy compound (B) having an epoxy equivalent of from 200 to 3,000 g/eq, and a hydroxy group-containing resin (C) having a number average molecular weight of from 2,000 to 500,000 and a halogen element content of 1,000 ppm or less, wherein the epoxy compound (B) is blended in an amount of from 0.05 to 10 parts by weight with respect to 100 parts by weight in total of 70 to 99.9 parts by weight of the thermoplastic polyester resin (A) and 0.1 to 30 parts by weight of the hydroxy group-containing resin (C). The thermoplastic resin composition and a molded article achieve both long-term hydrolysis resistance and heat aging resistance at a high level, and can further suppress bleed-out to the surface of the molded article during heat-dry and heat-moisture treatments.

公开(公告)号：US20210032402A1

公开(公告)日：2021-02-04

申请号：US16608463

申请日：2018-06-20

Applicant: Toray Industries, Inc.

Inventor： Kenichi Okunaga ,  Yusuke Tojo ,  Makito Yokoe ,  Hideyuki Umetsu

IPC: C08G63/183 ,  C08G63/189 ,  C08G59/24 ,  C08G59/32 ,  C08L63/04 ,  C08K5/49 ,  C08K3/32 ,  C08K7/14 ,  C08L101/06 ,  C08K9/04

Abstract: A thermoplastic polyester resin composition includes a thermoplastic polyester resin (A), an epoxy compound (B) having an epoxy equivalent of from 200 to 3,000 g/eq, and a hydroxy group-containing resin (C) having a number average molecular weight of from 2,000 to 500,000 and a halogen element content of 1,000 ppm or less, wherein the epoxy compound (B) is blended in an amount of from 0.05 to 10 parts by weight with respect to 100 parts by weight in total of 70 to 99.9 parts by weight of the thermoplastic polyester resin (A) and 0.1 to 30 parts by weight of the hydroxy group-containing resin (C). The thermoplastic resin composition and a molded article achieve both long-term hydrolysis resistance and heat aging resistance at a high level, and can further suppress bleed-out to the surface of the molded article during heat-dry and heat-moisture treatments.

公开(公告)号：US20200172726A1

公开(公告)日：2020-06-04

申请号：US16781768

申请日：2020-02-04

Applicant: Toray Industries, Inc.

Inventor： Yusuke Tojo ,  Kentaro Togawa ,  Daisuke Sato ,  Sadanori Kumazawa

IPC: C08L67/02 ,  C08K5/49 ,  C08L63/00 ,  C08G59/68 ,  C08G59/32 ,  C08L63/04

Abstract: A thermoplastic polyester resin composition has an excellent retention stability and is capable of producing a molded article excellent in mechanical properties and heat resistance as well as in long-term hydrolysis resistance; and the molded article. The thermoplastic polyester resin includes 100 parts by weight of a thermoplastic polyester resin (A) and 0.1 to 10 parts by weight of a biphenyl aralkyl-type epoxy resin or cyclopentadiene-type epoxy resin (B) of a specific type.

公开(公告)号：US10577457B2

公开(公告)日：2020-03-03

申请号：US15764163

申请日：2016-10-24

Applicant: Toray Industries, Inc.

Inventor： Tsuyoshi Tanaka ,  Yusuke Tojo ,  Makito Yokoe ,  Hideyuki Umetsu

IPC: C08G63/50 ,  C08L67/02

Abstract: A terminal modified polybutylene terephthalate resin has a weight average molecular weight Mw of 10,000 to 100,000, a melting point of 210° C. to 235° C., and a melt viscosity μ at 250° C. of not more than 10 Pa·s, and includes 90 to 300 mol/ton of a compound having a (poly)oxyalkylene structure, the compound being terminally bound in the resin, wherein the weight average molecular weight Mw represents a relative weight average molecular weight with respect to the molecular weight of a standard poly(methyl methacrylate) as determined by gel permeation chromatography using hexafluoroisopropanol (supplemented with 0.005 N sodium trifluoroacetate) as a mobile phase.

公开(公告)号：US10392505B2

公开(公告)日：2019-08-27

申请号：US15767323

申请日：2016-10-26

Applicant: TORAY INDUSTRIES, INC.

Inventor： Yusuke Tojo ,  Makito Yokoe ,  Hideyuki Umetsu

IPC: C08L67/02 ,  C08K3/00 ,  C08K5/053 ,  C08K5/1545 ,  C08L63/00 ,  C08L67/00 ,  C08K5/1515

Abstract: There is provided a thermoplastic polyester resin composition, comprising a specified amount of a multivalent hydroxyl compound (B) having five or more hydroxyl groups and a specified amount of an epoxy compound (C) that are to be blended with a thermoplastic polyester resin (A).

公开(公告)号：US20180223040A1

公开(公告)日：2018-08-09

申请号：US15764163

申请日：2016-10-24

Applicant: Toray Industries, Inc.

Inventor： Tsuyoshi Tanaka ,  Yusuke Tojo ,  Makito Yokoe ,  Hideyuki Umetsu

IPC: C08G63/50 ,  C08L67/02

Abstract: A terminal modified polybutylene terephthalate resin has a weight average molecular weight Mw of 10,000 to 100,000, a melting point of 210° C. to 235° C., and a melt viscosity μ at 250° C. of not more than 10 Pa·s, and includes 90 to 300 mol/ton of a compound having a (poly)oxyalkylene structure, the compound being terminally bound in the resin, wherein the weight average molecular weight Mw represents a relative weight average molecular weight with respect to the molecular weight of a standard poly(methyl methacrylate) as determined by gel permeation chromatography using hexafluoroisopropanol (supplemented with 0.005 N sodium trifluoroacetate) as a mobile phase.