JP5845362B2 - 電子部品用接着剤、及び、表示素子用接着剤 - Google Patents

電子部品用接着剤、及び、表示素子用接着剤 Download PDF

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JP5845362B2
JP5845362B2 JP2014551856A JP2014551856A JP5845362B2 JP 5845362 B2 JP5845362 B2 JP 5845362B2 JP 2014551856 A JP2014551856 A JP 2014551856A JP 2014551856 A JP2014551856 A JP 2014551856A JP 5845362 B2 JP5845362 B2 JP 5845362B2
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filler
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JPWO2015056717A1 (ja
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高橋　徹
徹 高橋
彰 結城
彰 結城
良隆 国広
良隆 国広
拓身 木田
拓身 木田
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Sekisui Chemical Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • C08F290/067—Polyurethanes; Polyureas
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/46—Polymerisation initiated by wave energy or particle radiation
    • C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
    • C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
    • C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
    • C08F299/06—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67—Unsaturated compounds having active hydrogen
    • C08G18/671—Unsaturated compounds having only one group containing active hydrogen
    • C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C09J175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Materials For Photolithography (AREA)
  • Polymerisation Methods In General (AREA)
JP2014551856A 2013-10-18 2014-10-15 電子部品用接着剤、及び、表示素子用接着剤 Active JP5845362B2 (ja)

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JP2014551856A JP5845362B2 (ja) 2013-10-18 2014-10-15 電子部品用接着剤、及び、表示素子用接着剤

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Application Number Priority Date Filing Date Title
JP2013217644 2013-10-18
JP2013217644 2013-10-18
JP2014008733 2014-01-21
JP2014008734 2014-01-21
JP2014008733 2014-01-21
JP2014008734 2014-01-21
JP2014047830 2014-03-11
JP2014047830 2014-03-11
PCT/JP2014/077449 WO2015056717A1 (ja) 2013-10-18 2014-10-15 光湿気硬化型樹脂組成物、電子部品用接着剤、及び、表示素子用接着剤
JP2014551856A JP5845362B2 (ja) 2013-10-18 2014-10-15 電子部品用接着剤、及び、表示素子用接着剤

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JP (2) JP5845362B2 (enExample)
KR (3) KR102199885B1 (enExample)
CN (1) CN105637001B (enExample)
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WO (1) WO2015056717A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016163353A1 (ja) * 2015-04-09 2018-02-01 積水化学工業株式会社 光湿気硬化型樹脂組成物、電子部品用接着剤、及び、表示素子用接着剤

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102245326B1 (ko) * 2014-01-21 2021-04-27 세키스이가가쿠 고교가부시키가이샤 광 습기 경화형 수지 조성물, 전자 부품용 접착제, 및, 표시 소자용 접착제
WO2015146873A1 (ja) * 2014-03-26 2015-10-01 積水化学工業株式会社 光湿気硬化型樹脂組成物、電子部品用接着剤、及び、表示素子用接着剤
CN109679031A (zh) * 2014-05-13 2019-04-26 积水化学工业株式会社 光湿固化型树脂组合物、电子部件用粘接剂及显示元件用粘接剂
KR102321552B1 (ko) * 2014-05-30 2021-11-03 세키스이가가쿠 고교가부시키가이샤 광 습기 경화형 수지 조성물, 전자 부품용 접착제, 및 표시 소자용 접착제
WO2016076407A1 (ja) * 2014-11-13 2016-05-19 積水化学工業株式会社 硬化体、電子部品、及び、表示素子
KR102494910B1 (ko) * 2014-12-26 2023-02-01 세메다인 가부시키 가이샤 광경화성 조성물
JP6703409B2 (ja) * 2015-02-10 2020-06-03 積水化学工業株式会社 光湿気硬化型樹脂組成物及び熱伝導性接着剤
JP6697306B2 (ja) * 2016-03-31 2020-05-20 ハリマ化成株式会社 湿気硬化併用光硬化型組成物、コンフォーマルコーティング剤及び硬化物
KR102784371B1 (ko) * 2016-11-30 2025-03-19 가부시끼가이샤 레조낙 2액 경화형 우레탄계 조성물
JP7088838B2 (ja) * 2017-08-18 2022-06-21 積水化学工業株式会社 湿気硬化型樹脂組成物、電子部品用接着剤、及び、表示素子用接着剤
WO2019124494A1 (ja) 2017-12-22 2019-06-27 積水化学工業株式会社 硬化性樹脂組成物、硬化体、電子部品及び組立部品
WO2019203277A1 (ja) * 2018-04-19 2019-10-24 積水化学工業株式会社 硬化性樹脂組成物、硬化体、電子部品及び組立部品
KR102806771B1 (ko) * 2018-10-23 2025-05-13 세키스이가가쿠 고교가부시키가이샤 경화성 수지 조성물, 및 경화체
WO2020149379A1 (ja) * 2019-01-18 2020-07-23 積水化学工業株式会社 光湿気硬化性樹脂組成物、及び硬化体
JP7453905B2 (ja) * 2019-01-18 2024-03-21 積水化学工業株式会社 硬化性樹脂組成物、及び硬化体
JP7623808B2 (ja) * 2019-10-07 2025-01-29 日東電工株式会社 光硬化性粘着剤組成物、両面粘着シートおよびその製造方法、ならびに光学デバイスおよびその製造方法
JP7563170B2 (ja) * 2020-12-24 2024-10-08 ａｒｔｉｅｎｃｅ株式会社 ポリオール主剤、ポリウレタン接着剤、及び積層体
CN114133530B (zh) * 2021-12-30 2023-08-08 深圳市库泰克电子材料技术有限公司 带nco反应基团的聚氨酯丙烯酸酯及具有该树脂的uv湿气固化胶粘剂

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001064543A (ja) * 1999-08-27 2001-03-13 Nippon Shokubai Co Ltd 硬化型被覆材用樹脂組成物
JP2002241461A (ja) * 2001-02-20 2002-08-28 Dainippon Ink & Chem Inc 揺変性湿気硬化型ウレタン組成物

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826022B2 (ja) * 1976-12-21 1983-05-31 富士ゼロックス株式会社 電子写真用感光材料
JPH05295064A (ja) * 1992-04-24 1993-11-09 Dainippon Ink & Chem Inc 湿気硬化型ポリウレタン組成物
JP3608720B2 (ja) * 2000-04-14 2005-01-12 大日本インキ化学工業株式会社 揺変性湿気硬化型ウレタン組成物及びコーティング材、シーリング材、接着剤
JP2004018621A (ja) * 2002-06-14 2004-01-22 Nippon Shokubai Co Ltd ラジカル硬化性ウレタン樹脂組成物
JP2005187615A (ja) * 2003-12-25 2005-07-14 Yunimatekku Kk 紫外線硬化型アクリル系組成物
JP5105134B2 (ja) * 2005-05-13 2012-12-19 株式会社スリーボンド 硬化性組成物及びそれを用いた放熱部材の形成方法
US20100105797A1 (en) * 2005-07-22 2010-04-29 Bridgestone Corporation Sealing material, process for production of the material, and gasket using the material
JP5009690B2 (ja) * 2006-06-15 2012-08-22 日東電工株式会社 偏光板、画像表示装置および偏光板の製造方法
JP4936111B2 (ja) * 2006-07-27 2012-05-23 Ｄｉｃ株式会社 接着剤用硬化型樹脂組成物
JP5228370B2 (ja) 2007-04-27 2013-07-03 東亞合成株式会社 一液湿気硬化型ウレタン系ホットメルト接着剤組成物及びその使用方法
JP5624280B2 (ja) * 2009-04-14 2014-11-12 株式会社カネカ フラットパネルディスプレイ表示モジュール／透明カバーボード間充填用硬化性組成物およびそれを塗布硬化させて得られるフラットパネルディスプレイを搭載した電気・電子機器
JP5407646B2 (ja) * 2009-08-04 2014-02-05 東亞合成株式会社 電極被覆用光硬化型組成物
CN103703087B (zh) * 2011-07-22 2015-09-09 H.B.富勒公司 用在电子器件上的单组分双固化粘合剂
CN102816551A (zh) * 2012-05-23 2012-12-12 烟台信友电子有限公司 一种uv-湿气双固化液态光学透明胶及其制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001064543A (ja) * 1999-08-27 2001-03-13 Nippon Shokubai Co Ltd 硬化型被覆材用樹脂組成物
JP2002241461A (ja) * 2001-02-20 2002-08-28 Dainippon Ink & Chem Inc 揺変性湿気硬化型ウレタン組成物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016163353A1 (ja) * 2015-04-09 2018-02-01 積水化学工業株式会社 光湿気硬化型樹脂組成物、電子部品用接着剤、及び、表示素子用接着剤

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CN105637001B (zh) 2019-10-01
JPWO2015056717A1 (ja) 2017-03-09
TW201927845A (zh) 2019-07-16
KR102352334B1 (ko) 2022-01-17
KR102323651B1 (ko) 2021-11-08
KR20210002763A (ko) 2021-01-08
KR102199885B1 (ko) 2021-01-07
KR20210002764A (ko) 2021-01-08
WO2015056717A1 (ja) 2015-04-23
JP6427089B2 (ja) 2018-11-21
TWI659973B (zh) 2019-05-21
KR20160073941A (ko) 2016-06-27
CN105637001A (zh) 2016-06-01
TW201518332A (zh) 2015-05-16
TWI680145B (zh) 2019-12-21
JP2016029186A (ja) 2016-03-03

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