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SHAPE-MEMORY RESIN COMPOSITION AND MOLDED BODY UPDATE

外国特許コード F210010620
整理番号 (S2020-0223-N0)
掲載日 2021年12月20日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2021JP014185
国際公開番号 WO 2021205984
国際出願日 令和3年4月1日(2021.4.1)
国際公開日 令和3年10月14日(2021.10.14)
優先権データ
  • 特願2020-068477 (2020.4.6) JP
発明の名称 (英語) SHAPE-MEMORY RESIN COMPOSITION AND MOLDED BODY UPDATE
発明の概要(英語) This shape-memory resin composition contains: a resin (A) having a constitutional unit (a1) represented by general formula (a-1) and a constitutional unit (a2) represented by general formula (a-2); titania nanoparticles (B); and a tetraalkylphosphonium salt (C), and can be thermally melted and molded. In formula (a-1), R1 is a hydrogen atom or the like. Ra1 is a C1-C5 alkyl group. In formula (a-2), R2 is a hydrogen atom or the like. X2 is a nitrogen-containing cyclic group, a group represented by formula (a-2-1), or a group represented by formula (a-2-2). In formula (a-2-2), Ya2 is a C1-C5 alkylene group.
従来技術、競合技術の概要(英語) BACKGROUND ART
The shape memory material is a material that recovers to its original shape when heated to a certain temperature even when deformed by application of force after the molding process. Such shape memory materials have long been found in metals and are utilized in a variety of fields.
In recent years, it has been found that resin also exhibits shape memory. Shape memory resins have characteristics such as cheaper, lighter, easier to process, and colorable than shape memory metals, and thus research has been conducted in all fields. For example, in the space industry, by manufacturing articles transported to the space using a shape memory resin, the articles can be compressed in a compact manner during transportation and can be spread into a predetermined shape during use.
Specific examples of the shape memory resin include norbornene resins, trans polyisoprene resins, styrene-butadiene resins, urethane resins, polyester resins, polyolefin resins, acrylic resins, and the like.
Patent Document 1 discloses a curable silicone composition comprising an inorganic oxide particle part (a), a polysiloxane resin part (b), and an acrylic resin part (c), the inorganic oxide particle part (a) and the polysiloxane resin part (b); And a crosslinked structure (P1) in which the polysiloxane resin part (b) and the acrylic resin part (c) are crosslinked by a chemical bond, or an acrylic resin (P2) that is not crosslinked with the crosslinked structure (P1) and the polysiloxane resin, The ratio of the total amount of the inorganic oxide particle part (a) and the polysiloxane resin part (b) to the total amount of the acrylic resin part (c) and the acrylic resin (P2) (the former/the latter; weight ratio) is in the range of 1/99~ 50/50.
Patent Document 2 discloses heat-responsive resin particles, wherein the recovery rate of the diameter when the heat-responsive resin particles are compressed to a diameter of 40~ 50% and heated for 60 seconds at a glass transition temperature of+ 30 °C is 80% or greater based on the diameter before compression. Furthermore, the heat-responsive resin particles contain at least one type selected from the group consisting of (meth) acrylate-based polymerizable monomers, (meth) acrylamide-based polymerizable monomers, and (meth) acrylamide derivatives; A crosslinkable monomer having two or more polymerizable carbon-carbon double bonds in the molecule; and an acrylic liquid polymer contained in the polymer matrix.
Non-Patent Document 1 discloses a shape memory resin composition containing a copolymer of methyl methacrylate and 3-(trimethoxysilyl) propyl methacrylate, titania nanoparticles (B), and a tetraalkylphosphonium salt (C).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NIHON UNIVERSITY
  • 発明者(英語)
  • HARA Shuta
  • IKAKE Hiroki
  • SHIMIZU Shigeru
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS IT JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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