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公开(公告)号：US12043737B2
公开(公告)日：2024-07-23
申请号：US17906004
申请日：2021-03-09
发明人： Takanobu Teraoka
CPC分类号： C08L81/04 , C08K3/346 , C08K9/04 , C08K2003/2237
摘要： A molded article which exhibits an improved vibration-damping effect. The vibration-damping molded article includes a resin composition including at least a thermoplastic resin A, an olefin-based elastomer B having a reactive functional group, and an inorganic filler C, wherein the inorganic filler C is coated with the olefin-based elastomer B.
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公开(公告)号：US11932730B2
公开(公告)日：2024-03-19
申请号：US18258664
申请日：2021-12-06
发明人： Katsuhei Ohnishi
IPC分类号： G02B6/38 , C08G75/0204 , C08K3/36
CPC分类号： C08G75/0204 , C08K3/36 , G02B6/38 , C08K2201/005 , C08K2201/014
摘要： A polyarylene sulfide resin composition which yields a molded article with excellent toughness, as well as a molded article and an optical ferrule, which are produced using the polyarylene sulfide resin composition. In a polyarylene sulfide resin composition containing a polyarylene sulfide resin and silica particles, a specific amount of a polyarylene sulfide resin having a melt viscosity of 35 to 80 Pa·s, and a specific amount of silica particles having a lower content of coarse powders with a particle size of 45 μm or more are employed.
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公开(公告)号：US20220119638A1
公开(公告)日：2022-04-21
申请号：US17434226
申请日：2020-03-24
发明人： Itsuki Saito , Yoshihiro Asai , Kazuya Goshima
IPC分类号： C08L67/02
摘要： A method for improving the comparative tracking index of a thermoplastic resin, as measured in compliance with IEC60112, 3rd edition, is disclosed by blending a carbodiimide compound in the thermoplastic resin; use of a carbodiimide compound for improving the comparative tracking index of a thermoplastic resin, as measured in compliance with IEC60112, 3rd edition; and a tracking resistance improving agent for a thermoplastic resin, for improving the comparative tracking index of the thermoplastic resin, as measured in compliance with IEC60112, 3rd edition. The carbodiimide compound is preferably used at a ratio of 0.01 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin.
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公开(公告)号：US11236229B2
公开(公告)日：2022-02-01
申请号：US16483977
申请日：2018-02-06
发明人： Kazuya Goshima , Keiichi Osano
IPC分类号： C08L67/02 , C08G63/183 , C08K3/26 , C08K5/098 , C08K5/29
摘要： 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.
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公开(公告)号：US20210246311A1
公开(公告)日：2021-08-12
申请号：US17049750
申请日：2019-04-25
发明人： Katsuhei Ohnishi , Tatsuya Kanezuka
摘要： A polyarylene sulfide-based resin composition is disclosed containing a polyarylene sulfide-based resin A, an inorganic filler B, and olefinic copolymers C and D each having predetermined structural units, wherein: the inorganic filler B contains a fibrous inorganic filler B1 having a different diameter ratio of 1.5 or less and a fibrous inorganic filler B2 having a different diameter ratio of 3.0 or more; a mass ratio B1/B2 of the fibrous inorganic filler B1 and the fibrous inorganic filler B2 is 0.2 or more and 5.0 or less; and the contents of the olefinic copolymers C and D are respectively 3 parts by mass or more and less than 19 parts by mass and 3 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of the polyarylene sulfide-based resin A.
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公开(公告)号：US20210170696A1
公开(公告)日：2021-06-10
申请号：US16771046
申请日：2018-12-10
发明人： Kouichi Sakata
IPC分类号： B29C65/16
摘要： A molded article that is used on a laser beam absorbing in laser welding side and that is possible to be marked by being irradiated with a laser beam, the molded article being composed of a resin composition containing 0.1 to 0.4 parts by mass of a carbon black per 100 parts by mass of a thermoplastic aromatic resin, the carbon black having a primary particle diameter of 20 to 40 nm and a DBP oil absorption of 100 cm3/100 g or more.
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公开(公告)号：US10577496B2
公开(公告)日：2020-03-03
申请号：US15777082
申请日：2016-11-04
发明人： Tomohiro Monma
IPC分类号： C08L59/04 , C08L23/08 , C08K5/092 , C08K3/20 , C08K3/26 , C08K3/32 , C08K5/098 , C08J3/00 , C08K5/13 , C08L33/02
摘要： A polyacetal resin composition. An aliphatic polycarboxylic acid having four or more carbons and two or more carboxyl groups and a hindered-phenol antioxidant are incorporated into a polyacetal copolymer obtained by copolymerizing trioxane as a major monomer with a cyclic ether and/or cyclic formal each having at least one carbon-carbon bond as a comonomer using a specific heteropoly acid as a polymerization catalyst, adding, to the resultant reaction product, a compound which is any of the carbonates, hydrogen carbonates, and carboxylates of alkali metal elements or alkaline-earth metal elements, the hydrates of these, and the hydroxides of alkali metal elements or alkaline-earth metal elements, and melt-kneading the mixture to deactivate the polymerization catalyst.
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公开(公告)号：US10526482B2
公开(公告)日：2020-01-07
申请号：US15770026
申请日：2016-10-26
申请人： WinTech Polymer Ltd.
发明人： Shinya Yamada , Kouichi Sakata
摘要： A polybutylene terephthalate resin composition in which it is possible to effectively suppress discoloration without lowering the heat shock resistance. The polybutylene terephthalate resin composition is part of a molded article having a lightness L* value of 80 or higher as measured using a color difference meter, and includes a polybutylene terephthalate resin having a terminal carboxyl group content of 30 meq/kg or less, a carbodiimide compound, and a phosphite compound; and the phosphite compound content is 0.05-0.15 parts by mass per 100 parts by mass of polybutylene terephthalate resin.
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公开(公告)号：US09969875B2
公开(公告)日：2018-05-15
申请号：US15548994
申请日：2015-11-30
发明人： Akihide Shimoda , Hirokazu Katsuchi
CPC分类号： C08L59/00 , C08K3/26 , C08K5/101 , C08K5/103 , C08K5/13 , C08K5/16 , C08K5/34922 , C08K7/08 , C08K2003/265 , C08L51/04 , C08L51/06 , C08L59/04 , C08L83/04 , F16C31/02 , F16C33/201
摘要： A polyacetal resin composition which not only is highly inhibited from making creaking sounds but also has satisfactory performances with respect to other properties. The polyacetal resin composition includes 100 parts by weight of a polyacetal resin, 0.01-1 part by weight of a hindered phenolic antioxidant, 0.01-1 part by weight of a nitrogenous compound, 0.1-1 part by weight of a graft copolymer, 0.1-1 part by weight of a fatty acid ester, 0.5-5 parts by weight of a silicone oil, and 0.1-1 part by weight of calcium carbonate. The nitrogenous compound may be an aminotriazine compound, the graft copolymer includes an olefin-based polymer as the main chain and a vinyl-based polymer as side chains, the fatty acid ester includes a C12-32 fatty acid and a C2-30 mono- or polyhydric alcohol, and the calcium carbonate has an average particle diameter of 1 μm or smaller.
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公开(公告)号：US09695265B2
公开(公告)日：2017-07-04
申请号：US15119561
申请日：2014-12-10
发明人： Tadahiro Horiguchi , Eiji Masuda
摘要： A process for producing a polyacetal copolymer, the process making catalyst deactivation easy and efficient. Trioxane as a major monomer is copolymerized with one or more comonomers that are a cyclic ether and/or cyclic formal having at least one carbon-carbon bond, using a nonvolatile protonic acid as a polymerization catalyst at 100° C. or lower until the conversion reaches 50% and thereafter at a polymerization environment temperature of 115° C. to 140° C. This process includes: a crushing step in which a dry-process crusher is used to obtain a crude polyacetal copolymer crushed to such a degree that when the crude copolymer is screened with a sieve having an opening size of 11.2 mm, 90 parts by weight or more thereof passes therethrough; and a deactivation step in which a basic compound (e) is added to the crude copolymer and the mixture is melt-kneaded to thereby deactivate the polymerization catalyst.
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