公开(公告)号：US11697232B2

公开(公告)日：2023-07-11

申请号：US16632257

申请日：2018-07-19

Applicant: Polyplastics Co., LTD. ,  Yamase Electric Co., LTD.

Inventor： Hidemi Kondo

IPC: B29C45/14 ,  B32B15/08 ,  B23K26/364 ,  B29K705/02 ,  B32B15/20

CPC classification number: B29C45/14311 ,  B32B15/08 ,  B23K26/364 ,  B29C45/14811 ,  B29K2705/02 ,  B32B15/20

Abstract: A metal resin composite-molded article which can suppress deformation induced by laser processing in a technique for improving the adhesion between a metal plate and a resin by forming grooves on the surface of the metal plate by means of a laser, even if the metal plate is thin. A metal resin composite-molded article obtained by insert-molding a resin composition on a metal plate having a thickness of 500 μm or less, grooves are formed on the surface of the metal plate in which the resin composition is inserted, the width of the grooves is 30-300 μm, the depth of the grooves is at most 24% of the thickness of the metal plate, and the ratio of the width to the depth is 0.1-2.5.

公开(公告)号：US11555111B2

公开(公告)日：2023-01-17

申请号：US17287312

申请日：2019-12-05

Applicant: Polyplastics Co., Ltd.

Inventor： Akihiro Tamaoka ,  Hatsuhiko Harashina ,  Tomohiro Monma

IPC: C08L59/00 ,  C08K5/098 ,  C08K5/25 ,  C08K5/3445

Abstract: A polyacetal resin composition capable of keeping the generation of formaldehyde from a molded article at a very low level and stably keeping mold deposits at a minimum during molding. The polyacetal resin composition includes at least (A) 100 parts by mass of a polyacetal polymer, (B) 0.01-0.50 parts by mass of an aliphatic carboxylic hydrazide, (C) 0.001-0.50 part by mass of a hydantoin compound having two hydrazinocarbonylalkyl groups, and (D) 0.001-0.30 part by mass of an alkaline earth metal salt of an aliphatic carboxylic acid. The total amount of (B) and (C) is 0.03-0.55 part by mass per 100 parts by mass of the (A) polyacetal polymer.

公开(公告)号：US20220227989A1

公开(公告)日：2022-07-21

申请号：US17595350

申请日：2020-04-10

Applicant: Polyplastics Co., Ltd.

Inventor： Kazuyuki HATTORI ,  Tomohiro MONMA

IPC: C08L59/02 ,  C08K5/13 ,  C08K5/09 ,  C08L83/04 ,  C08K3/26

Abstract: A polyacetal resin composition and a sliding member, the polyacetal resin composition having excellent performance with respect to friction/abrasion characteristics while maintaining good appearance of a molded article thereof or low occurrence of mold contamination during molding. The polyacetal resin composition contains at least (A) 100 parts by mass of a polyacetal resin, (B) 0.01 part by mass to 1 part by mass of a hindered-phenol-based antioxidant, (C) 0.3 part by mass to 5 parts by mass of silicone oil, (D) 0.1 part by mass to 1.0 part by mass of calcium carbonate, and (E) 0.02 part by mass to 0.2 part by mass of a fatty acid, the calcium carbonate (D) is precipitated calcium carbonate which is not surface-treated and which has an average particle diameter of 1μm or less, and the fatty acid (E) is a C12-30 fatty acid.

公开(公告)号：US20210355314A1

公开(公告)日：2021-11-18

申请号：US17287312

申请日：2019-12-05

Applicant: Polyplastics Co., Ltd.

Inventor： Akihiro TAMAOKA ,  Hatsuhiko HARASHINA ,  Tomohiro MONMA

IPC: C08L59/00 ,  C08K5/098 ,  C08K5/25 ,  C08K5/3445

Abstract: A polyacetal resin composition capable of keeping the generation of formaldehyde from a molded article at a very low level and stably keeping mold deposits at a minimum during molding. The polyacetal resin composition includes at least (A) 100 parts by mass of a polyacetal polymer, (B) 0.01-0.50 parts by mass of an aliphatic carboxylic hydrazide, (C) 0.001-0.50 part by mass of a hydantoin compound having two hydrazinocarbonylalkyl groups, and (D) 0.001-0.30 part by mass of an alkaline earth metal salt of an aliphatic carboxylic acid. The total amount of (B) and (C) is 0.03-0.55 part by mass per 100 parts by mass of the (A) polyacetal polymer.

公开(公告)号：US20210354342A1

公开(公告)日：2021-11-18

申请号：US17311032

申请日：2019-12-06

Applicant: Polyplastics Co., Ltd.

Inventor： Yoshiaki Taguchi ,  Tatsuya Kawasaki

IPC: B29C43/00 ,  B29C43/52

Abstract: A powdery liquid-crystal resin for a press-molded article is disclosed having a bulk density of more than 0.05 g/cm3 and 0.5 g/cm3 or less. The powdery liquid-crystal resin preferably has a particle diameter distribution width as defined by JIS Z8825: 2013 of 3.0 or more and 12 or less. The powdery liquid-crystal resin preferably has an average particle diameter of 10 μm or more and 300 μm or less. The degree of crystallinity of the powdery liquid-crystal resin is preferably 20% or more and 70% or less.

公开(公告)号：US20210162714A1

公开(公告)日：2021-06-03

申请号：US17262880

申请日：2019-08-09

Applicant: Polyplastics Co., Ltd.

Inventor： Takuhei TSUKADA ,  Akihiro MOCHIZUKI

IPC: B32B15/08 ,  B32B3/30

Abstract: A structure capable of leaving a repetition of heating and cooling as a dynamic deformation amount. The structure retains joining performance of a laminated body made of two types of materials having different thermal properties.

公开(公告)号：US20210047511A1

公开(公告)日：2021-02-18

申请号：US16981861

申请日：2019-03-20

Applicant: POLYPLASTICS CO., LTD.

Inventor： Kazuya Goshima ,  Itsuki Saito

IPC: C08L67/02 ,  C09K21/14

Abstract: The present invention addresses the problem of enhancing the fluidity of a polybutylene terephthalate resin composition that uses a halogenated benzyl acrylate-based flame retardant as a flame retardant while maintaining properties such as excellent mechanical strength that a polybutylene terephthalate-based resin possesses. The problem is solved by adding a protic compound to the polybutylene terephthalate resin composition that uses a halogenated benzyl acrylate-based flame retardant as a flame retardant.

公开(公告)号：US20200291223A1

公开(公告)日：2020-09-17

申请号：US16082052

申请日：2017-02-06

Applicant: Polyplastics Co., Ltd.

Inventor： Hatsuhiko HARASHINA ,  Hirokazu KATSUCHI

IPC: C08L59/04

Abstract: A polyacetal resin composition which exhibits resistance to hot water, and contains 100 parts by mass of a polyacetal resin, 1 to 100 parts by mass, inclusive, of glass fibers subjected to a surface treatment with a blocked isocyanate compound and an aminosilane coupling agent, and 0.001 to 1.0 parts by mass, inclusive, of boric acid.

公开(公告)号：US10717864B2

公开(公告)日：2020-07-21

申请号：US16301565

申请日：2017-04-12

Applicant: Polyplastics Co., Ltd.

Inventor： Tadahiro Horiguchi ,  Sonae Kotani ,  Kazuki Ohi

IPC: C08L59/02 ,  B60J10/74 ,  B29C45/00 ,  B60J1/00 ,  C08J5/00 ,  C08L59/00 ,  C08K5/13 ,  B29K59/00 ,  B60J1/17

Abstract: A polyacetal resin composition suitable for providing a plate-shaped resin molded article that satisfies all of the following: high flatness, low shrinkage ratio anisotropy (high dimensional stability), high creep resistance, high impact strength, and excellent color stability during residence in the molding machine. The polyacetal resin composition for molding a plate-shaped molded article includes 100 mass parts of a polyacetal resin having a melt index (according to ASTM D1238, 190° C., 2.16 kgf) of 2.0 g/10 min to 4.0 g/10 min; 0.1 mass parts to 2 mass parts of a polyacetal copolymer that is a copolymer of (b1) trioxane, (b2) a compound having two to four cyclic ether units per one molecule, and (b3) a compound having one cyclic ether unit per one molecule, the polyacetal copolymer having a branched or crosslinked structure; and 0.1 mass parts to 1 mass part of a hindered phenol antioxidant.

公开(公告)号：US20200010668A1

公开(公告)日：2020-01-09

申请号：US16483977

申请日：2018-02-06

Applicant: POLYPLASTICS CO., LTD.

Inventor： Kazuya Goshima ,  Keiichi Osano

IPC: C08L67/02 ,  C08G63/183 ,  C08K3/26 ,  C08K5/098 ,  C08K5/29

Abstract: A manufacturing method for a thermoplastic aromatic polyester resin composition is disclosed having a step of blending: a thermoplastic aromatic polyester resin A; an alkali composition B containing a thermoplastic aromatic polyester resin a and an alkali compound b; and a carbodiimide compound C. The alkali composition B is preferably a composition in which an aqueous solution of the alkali compound b is melt-kneaded with the thermoplastic aromatic polyester resin a. The carbodiimide compound C preferably contains an aromatic carbodiimide compound. The alkali compound U content in the thermoplastic aromatic polyester resin composition is preferably 10 ppm by mass or more and 100 ppm by mass or less.