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公开(公告)号：US20210146653A1
公开(公告)日：2021-05-20
申请号：US17159118
申请日：2021-01-26
Applicant: Mitsubishi Chemical Corporation
Inventor： Takeshi ISHIKAWA , Hayato OGASAWARA , Masao TOMIOKA
Abstract: Provided is a laminated substrate wherein a sheet-shaped material with a porosity of 50-99% is laminated onto at least one surface of a prepreg substrate which includes a reinforcing fiber and a thermoplastic resin.
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公开(公告)号：US20210002436A1
公开(公告)日：2021-01-07
申请号：US17027796
申请日：2020-09-22
Applicant: Mitsubishi Chemical Corporation
Inventor： Yasutaka SHINOURA , Takayuki KOBAYASHI , Takuya MIYAUCHI , Takeshi ISHIKAWA
Abstract: A composite material molded article includes a molded product of a molding material containing a resin and fibers, in which a fiber orientation degree f of the following region A of the molded product is 0.10 or more and 1 or less.
Region A: in a case where a distance between one point at each of edges of a surface of a first end portion of the molded product and edges of the other end portion is measured along a vertical direction perpendicular to lateral faces of the first end portion within a surface of the molded product, and points separated from the one point by a distance equivalent to 3.0% of the distance measured from the one point are connected with a line along the edges of the first end portion, a region surrounded with the line and the edges of the molded product is regarded as a region A.-
公开(公告)号：US20190001591A1
公开(公告)日：2019-01-03
申请号：US16122270
申请日：2018-09-05
Applicant: Mitsubishi Chemical Corporation
Inventor： Masao TOMIOKA , Takeshi ISHIKAWA , Takayuki KOBAYASHI
IPC: B29C70/50
Abstract: A production method for fiber-reinforced plastic, includes: a step in which a material (A) including a prepreg base material is obtained, said prepreg base material having cuts therein and having a thermoplastic resin impregnated in reinforcing fibers arranged in parallel in one direction; a step in which a pressurizing device is used that applies a substantially uniform pressure in a direction (X) orthogonal to the travel direction of the material (A) and the material (A) is caused to travel in the one direction and is pressurized while being heated to a prescribed temperature (T), an angle (θ) of −20° to 20° being formed between the orthogonal direction (X) and a fiber axial direction (Y) for the reinforcing fibers of the prepreg base material; and a step in which the material (A) pressurized by the pressurizing device is cooled and the fiber-reinforced plastic is obtained.
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公开(公告)号：US20180371160A9
公开(公告)日：2018-12-27
申请号：US14193409
申请日：2014-02-28
Applicant: Mitsubishi Chemical Corporation
Inventor： Toru TAKASHIMA , Katsushi YAMAOKA , Takeshi ISHIKAWA
Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.
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公开(公告)号：US20180222128A1
公开(公告)日：2018-08-09
申请号：US15749612
申请日：2016-08-04
Applicant: Mitsubishi Chemical Corporation
Inventor： Masao TOMIOKA , Takeshi ISHIKAWA , Takayuki KOBAYASHI
CPC classification number: B29C70/205 , B29C43/003 , B29C43/48 , B29C43/52 , B29C70/14 , B29C70/50 , B29C70/504 , B29C70/508 , B29C70/545 , B29C2043/483 , B29C2043/486 , B29C2793/0054 , B29K2105/0872 , B29K2105/0881 , B29L2007/002
Abstract: A fiber-reinforced plastic producing method capable of easily producing a fiber-reinforced plastic in which swelling and warpage are less likely to occur and of which excellent mechanical characteristics and isotropy are ensured, and a fiber-reinforced plastic in which swelling and warpage are suppressed from occurring. The fiber-reinforced plastic producing method has a step for obtaining a material (A) including a prepreg base material in which a region (B), where reinforcing fibers pulled and aligned in one direction are impregnated with a matrix resin and a plurality of cuts (b) are formed, and a region (C), where a plurality of cuts (c) are formed, are alternately formed in a direction orthogonal to a fiber axis of the reinforcing fiber, a step for hot-pressing the material (A) while moving the material (A) under specific conditions, and a step for cooling the pressed material (A) to obtain the fiber-reinforced plastic.
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Patent Agency Ranking
公开(公告)号：US20140179818A1
公开(公告)日：2014-06-26
申请号：US14193409
申请日：2014-02-28
Applicant: Mitsubishi Chemical Corporation
Inventor： Toru TAKASHIMA , Katsushi YAMAOKA , Takeshi ISHIKAWA
CPC classification number: C08G64/06 , B29C44/586 , B29K2069/00 , B29K2995/0063 , C08G64/0208 , C08J9/0061 , C08J9/122 , C08J2369/00 , C08J2467/03 , C08L69/00 , C08L2201/08
Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.
Abstract translation: 本发明的目的是提供一种容易制造并通过发泡聚碳酸酯共聚物而得到的成型体，该聚碳酸酯共聚物含有重量轻且机械性能优异的异山梨醇作为原料。 本发明涉及含有具有由下式（1）表示的二羟基化合物衍生的结构单元的聚碳酸酯共聚物的发泡成型体，以及衍生自其他二羟基化合物的结构单元，其玻璃化转变温度（Tg ）小于145℃
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公开(公告)号：US20240426034A1
公开(公告)日：2024-12-26
申请号：US18822718
申请日：2024-09-03
Applicant: MITSUBISHI CHEMICAL CORPORATION
Inventor： Masashi IKEDA , Kazuki TSUJIKAWA , Takeshi ISHIKAWA , Jun MATSUI
IPC: D04H1/60 , C08J5/04 , C08J5/24 , D04H1/4218 , D04H1/4242 , D04H1/4382 , D04H1/54 , D04H1/587
Abstract: Provided are a method for producing a carbon fiber bundle composite and a carbon fiber bundle composite. The method contains a step of mixing carbon fiber fluff made of short carbon fibers and a molten resin containing an epoxy resin component to obtain a carbon fiber bundle containing the molten resin, a step of solidifying the molten resin, and a step of mixing at least one type of epoxy curing agent into the molten resin. The carbon fiber bundle composite contains a plurality of short carbon fibers forming the bundle and an uncured solid epoxy resin composition. The positions of the tips of the short carbon fibers are uneven at each end of the bundle; and the uncured solid epoxy resin composition contains at least one type of epoxy curing agent.
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公开(公告)号：US20240326293A1
公开(公告)日：2024-10-03
申请号：US18535665
申请日：2023-12-11
Applicant: Mitsubishi Chemical Corporation
Inventor： Kazuki TSUJIKAWA , Takeshi ISHIKAWA , Jun MATSUI , Masashi IKEDA
IPC: B29B9/14 , B29B17/04 , B29K105/12 , B29K105/26 , B29K307/04
CPC classification number: B29B9/14 , B29B2017/0496 , B29K2105/12 , B29K2105/26 , B29K2307/04 , B29K2995/0063
Abstract: A method for producing a fiber assembly, including: putting a plurality of fibers and a fiber treatment agent into a stirring tank; and stirring a mixture of the fibers and the fiber treatment agent with a stirring blade to granulate the mixture, wherein the fibers include carbon fibers, and the mixture is granulated such that the fibers are aligned. A method for producing a fiber assembly, wherein a plurality of fibers containing carbon fibers and a liquid are put into a stirring tank and the mixture of the fibers and the liquid is stirred with a stirring blade, thereby obtaining a fiber assembly which has a spheroidal shape or a strand shape.
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公开(公告)号：US20200377681A1
公开(公告)日：2020-12-03
申请号：US16994984
申请日：2020-08-17
Applicant: Mitsubishi Chemical Corporation
Inventor： Takahiro HAYASHI , Takeshi ISHIKAWA , Kouichiro TANIGUCHI , Kazuya TANAKA , Masayasu HASUIKE
Abstract: Provided is a fiber-reinforced thermoplastic resin prepreg which exhibits high interfacial adhesion between reinforcement fibers and a matrix resin, while having excellent interlaminar fracture resistance. The fiber-reinforced thermoplastic resin prepreg of the present invention comprises: a matrix resin comprising a polyarylketone resin and a polyetherimide resin; and a carbon fiber, wherein the polyetherimide resin in the matrix resin comprises a polyetherimide resin having a structural unit represented by Formula (1), an amount of the polyetherimide resin in the matrix resin (100% by mass) is 3% by mass to 25% by mass, and an amount of the polyarylketone resin in the matrix resin (100% by mass) is 75% by mass or more.
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公开(公告)号：US20180079165A1
公开(公告)日：2018-03-22
申请号：US15562763
申请日：2016-04-01
Applicant: Mitsubishi Chemical Corporation
Inventor： Masahiko NAGASAKA , Takeshi ISHIKAWA , Hayato OGASAWARA
Abstract: The present invention pertains to a carbon fiber reinforced plastic, and provides a carbon fiber reinforced plastic laminated body that is low cost and superior in moldability, mechanical characteristic balance, and impact resistance. The laminated body has three or more layers, and has the following (B) layer between two layers of a fiber reinforced resin sheet, (B) layer: A resin sheet in which the displacement, in an S-S curve waveform obtained by the following high-speed punching test, from a peak value of the test force (kN) to an 85%—attenuation value is not less than 22 mm. High-speed punching test: Impact absorption energy is calculated by using an impact testing machine in compliance with ISO6603-2 standard. A 100 mm×100 mm test piece is cut out from a sheet having a thickness of 2 mm. The diameter of a striker is 12 mm. the diameter of an opening section of a holding tool is 76 mm, and the impact speed is set to 5 m/sec.
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