DE69519832D1 - Verfahren zur Polyetherreinigung - Google Patents

Verfahren zur Polyetherreinigung

Info

Publication number
DE69519832D1
DE69519832D1 DE69519832T DE69519832T DE69519832D1 DE 69519832 D1 DE69519832 D1 DE 69519832D1 DE 69519832 T DE69519832 T DE 69519832T DE 69519832 T DE69519832 T DE 69519832T DE 69519832 D1 DE69519832 D1 DE 69519832D1
Authority
DE
Germany
Prior art keywords
polyether
cleaning
polyether cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69519832T
Other languages
English (en)
Other versions
DE69519832T2 (de
Inventor
Takashi Watabe
Hiroshi Hatano
Kazunori Chiba
Takao Doi
Toru Ueno
Etsuko Sakai
Minoru Yamada
Shinya Saiki
Hirotsugu Yamamoto
Toshihiko Higuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Application granted granted Critical
Publication of DE69519832D1 publication Critical patent/DE69519832D1/de
Publication of DE69519832T2 publication Critical patent/DE69519832T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2642—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds characterised by the catalyst used
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/321—Polymers modified by chemical after-treatment with inorganic compounds
    • C08G65/327—Polymers modified by chemical after-treatment with inorganic compounds containing phosphorus
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Polyethers (AREA)
  • Epoxy Resins (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
DE69519832T 1994-07-18 1995-07-17 Verfahren zur Polyetherreinigung Expired - Lifetime DE69519832T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16518194 1994-07-18
JP32311394 1994-12-26

Publications (2)

Publication Number Publication Date
DE69519832D1 true DE69519832D1 (de) 2001-02-15
DE69519832T2 DE69519832T2 (de) 2001-06-07

Family

ID=26490012

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69519832T Expired - Lifetime DE69519832T2 (de) 1994-07-18 1995-07-17 Verfahren zur Polyetherreinigung

Country Status (4)

Country Link
US (2) US5811566A (de)
EP (1) EP0693513B1 (de)
JP (1) JP3981162B2 (de)
DE (1) DE69519832T2 (de)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69519832T2 (de) * 1994-07-18 2001-06-07 Asahi Glass Co Ltd Verfahren zur Polyetherreinigung
EP1396513B1 (de) * 1997-04-21 2005-09-07 Asahi Glass Company, Limited Bei Raumtemperatur härtende Zusammensetzungen
DE19842382A1 (de) * 1998-09-16 2000-03-23 Bayer Ag Doppelmetallcyanid-Katalysatoren für die Herstellung von Polyetherpolyolen
US6541593B1 (en) 1997-11-12 2003-04-01 Kaneka Corporation Process for the preparation of polyether oligomer containing reactive silicon group
FR2776388B1 (fr) * 1998-03-20 2006-04-28 Lipha Utilisation de recepteurs de la famille ror pour le criblage de substances utiles pour le traitement de l'atherosclerose
US6777485B1 (en) 1999-01-05 2004-08-17 Kaneka Corporation Curable resin composition
CA2293172A1 (en) 1999-01-05 2000-07-05 Fumio Kawakubo Method of producing reactive silicon group-containing polyether oligomers
JP5090590B2 (ja) * 1999-02-05 2012-12-05 株式会社カネカ 硬化性樹脂組成物
AU2294400A (en) 1999-02-11 2000-08-29 Bayer Aktiengesellschaft Double metal cyanide catalysts for producing polyether polyols
CA2302653A1 (en) 1999-03-29 2000-09-29 Hideharu Jyono Curable composition
US20040266982A1 (en) * 1999-07-09 2004-12-30 Clement Katherine S Polymerization of alkylene oxides onto functionalized initiators
CO5160376A1 (es) 1999-07-09 2002-05-30 Dow Chemical Co Polimerizacionde oxidos de alquileno usando catalizadores de cianuro de metal y compuestos iniciadores insaturados
EP1264854A1 (de) * 2001-06-06 2002-12-11 Asahi Glass Company Ltd. Härtbare Zusammensetzung
ES2199666B1 (es) * 2002-02-25 2005-06-01 Repsol Quimica, S.A. Procedimiento de produccion de polioleteres.
JP2004182970A (ja) * 2002-10-09 2004-07-02 Sanyo Chem Ind Ltd 共重合ポリエーテル及びその製造法
JP4101632B2 (ja) 2002-11-01 2008-06-18 株式会社カネカ 硬化性組成物および復元性、クリープ性改善方法
JP4681881B2 (ja) * 2002-11-18 2011-05-11 東レ・ダウコーニング株式会社 無臭化ポリエーテル変性ポリシロキサン、その製造方法、及びそれを含有する化粧料
EP1589071B1 (de) 2003-01-28 2012-11-14 Asahi Glass Company, Limited Polyether-polyol zusammensetzung und verwendung davon
WO2004096887A1 (ja) * 2003-05-02 2004-11-11 Kaneka Corporation 反応性珪素基含有有機重合体
JP4523763B2 (ja) * 2003-06-26 2010-08-11 コニシ株式会社 接着剤組成物
EP1493769B1 (de) * 2003-06-30 2007-11-21 Repsol Quimica S.A. Verfahren zur Reinigung von Polyetherpolyolen
US6962967B2 (en) * 2004-03-31 2005-11-08 Basf Corporation Method of purifying polyether polyols of non-volatile impurities
US8367876B2 (en) 2004-07-13 2013-02-05 Kaneka Corporation Method for producing polyether
WO2006047431A1 (en) * 2004-10-25 2006-05-04 Dow Global Technologies, Inc. Aqueous polyurethane dispersions made from hydroxymethyl containing polyester polyols derived from faty acids
CN101048439B (zh) * 2004-10-25 2011-04-13 陶氏环球技术公司 由植物油基含羟基的材料制成的聚合物多元醇和聚合物分散体
AU2005299520A1 (en) * 2004-10-25 2006-05-04 Dow Global Technologies, Inc. Prepolymers made from hydroxmethyl-containing polyester polyols derived from fatty acids
KR101225352B1 (ko) * 2004-10-25 2013-01-23 다우 글로벌 테크놀로지스 엘엘씨 히드록시메틸화 폴리에스테르 폴리올을 사용하여 제조된폴리우레탄 카펫 안감
JP5085331B2 (ja) * 2004-10-25 2012-11-28 ダウ グローバル テクノロジーズ エルエルシー ヒドロキシメチル含有脂肪酸またはそのような脂肪酸のアルキルエステルから作られるポリウレタン
CN101056945B (zh) 2004-11-10 2011-04-13 株式会社钟化 固化性组合物
US7572379B2 (en) * 2005-09-02 2009-08-11 Sachem, Inc. Removal of metal ions from onium hydroxides and onium salt solutions
JP5587538B2 (ja) 2005-09-30 2014-09-10 株式会社カネカ トリメトキシシリル基末端を有する有機重合体の製造方法
JP5378684B2 (ja) 2005-09-30 2013-12-25 株式会社カネカ 硬化性組成物
WO2007040101A1 (ja) 2005-09-30 2007-04-12 Kaneka Corporation 硬化性と貯蔵安定性の改善された硬化性組成物
WO2007037485A1 (ja) 2005-09-30 2007-04-05 Kaneka Corporation 硬化性組成物
JP4969095B2 (ja) * 2005-12-19 2012-07-04 株式会社ダイセル 硬化性樹脂組成物およびその製造方法
US7495063B2 (en) * 2006-02-03 2009-02-24 Dow Global Technologies Inc. Reduced oligomer concentration in high purity polyalkylene glycols
EP1990370B2 (de) 2006-02-16 2015-08-12 Kaneka Corporation Härtbare zusammensetzung
WO2007123167A1 (ja) 2006-04-20 2007-11-01 Kaneka Corporation 硬化性組成物
ATE532811T1 (de) * 2006-08-31 2011-11-15 Asahi Glass Co Ltd Verfahren zur reinigung einer polyetherverbindung
WO2008032539A1 (fr) 2006-09-13 2008-03-20 Kaneka Corporation POLYMÈRE DURCISSABLE À L'HUMIDITÉ COMPORTANT UN GROUPE SiF ET COMPOSITION DURCISSABLE CONTENANT UN TEL POLYMÈRE
CN101535374B (zh) 2006-11-01 2015-09-23 株式会社钟化 固化性有机聚合物及其制造方法以及含该聚合物的固化性组合物
WO2008062866A1 (fr) 2006-11-22 2008-05-29 Kaneka Corporation Composition durcissable et composition de catalyseur
WO2008078654A1 (ja) 2006-12-25 2008-07-03 Kaneka Corporation 硬化性組成物
WO2008084651A1 (ja) 2007-01-12 2008-07-17 Kaneka Corporation 硬化性組成物
US7740821B2 (en) * 2007-05-04 2010-06-22 The University Of Massachusetts Highly condensed mesoporous silicate compositions and methods
EP2177571A4 (de) 2007-07-19 2014-01-08 Kaneka Corp Härtbare zusammensetzung
EP2341106B1 (de) 2008-09-29 2013-05-29 Kaneka Corporation Härtbare zusammensetzung und gehärtetes produkt daraus
EP2388297B1 (de) 2009-01-16 2020-08-19 Kaneka Corporation Härtbare zusammensetzung und daraus geformtes gehärtetes produkt
KR101838533B1 (ko) 2010-01-19 2018-04-26 카네카 코포레이션 경화성 조성물
EP2365019A1 (de) 2010-03-13 2011-09-14 Bayer MaterialScience AG Verfahren zur Herstellung von Polyetherpolyolen
JP5841055B2 (ja) 2010-08-10 2016-01-06 株式会社カネカ 硬化性組成物
CN103180395B (zh) 2010-10-27 2016-03-09 株式会社钟化 固化性组合物
JP5993367B2 (ja) 2011-04-15 2016-09-14 株式会社カネカ 建築用外装材
KR101860710B1 (ko) * 2011-07-27 2018-05-25 삼성전자주식회사 내지문성 코팅 조성물 및 이를 이용한 피막
WO2013042702A1 (ja) 2011-09-22 2013-03-28 株式会社カネカ 硬化性組成物およびその硬化物
US20150266271A1 (en) 2012-09-28 2015-09-24 Kaneka Corporation Structural body
EP2951234A2 (de) 2013-02-01 2015-12-09 3M Innovative Properties Company Beschichtungszusammensetzungen und daraus hergestellte artikel
SG2014014567A (en) 2013-02-22 2014-09-26 Bayer Materialscience Ag Process for preparing polyether polyols
MX337785B (es) 2013-02-22 2016-03-18 Bayer Materialscience Ag Procedimiento de preparacion de polioles de polieter.
JP6202471B2 (ja) * 2013-10-31 2017-09-27 日油株式会社 医用ポリオキシプロピレン重合体の製造方法および医用ポリオキシプロピレン／ポリオキシエチレンブロック共重合体の製造方法
EP3088474A4 (de) 2013-12-26 2017-08-09 Kaneka Corporation Härtbare zusammensetzung und gehärtetes produkt daraus
KR20220041946A (ko) 2014-02-18 2022-04-01 쓰리엠 이노베이티브 프로퍼티즈 캄파니 자가 밀봉 물품
US10704254B2 (en) 2014-02-18 2020-07-07 3M Innovative Properties Company Easy to apply air and water barrier articles
JP2015183185A (ja) * 2014-03-26 2015-10-22 旭硝子株式会社 硬化性組成物
EP3174946B1 (de) 2014-08-01 2018-11-28 3M Innovative Properties Company Selbstdichtende durchlässige mit luftgrenze zusammensetzungen
US9777189B2 (en) 2014-11-03 2017-10-03 Kaneka North America Llc Curable composition
EP3237699A1 (de) 2014-12-22 2017-11-01 3M Innovative Properties Company Luft- und wassersperrartikel
DE112016000869T5 (de) 2015-02-23 2018-01-18 King Industries, Inc. Härtbare Beschichtungszusammensetzungen von Silan-funktionellen Polymeren
EP3337867B1 (de) 2015-08-18 2024-04-10 3M Innovative Properties Company Luft- und wassersperrartikel mit poröser schicht und auskleidung
WO2017111121A1 (ja) 2015-12-24 2017-06-29 株式会社カネカ 積層体の製造方法、および積層体
JP6872341B2 (ja) * 2016-10-17 2021-05-19 株式会社カネカ 精製された不飽和基含有ポリエーテル重合体の製造方法、及び加水分解性ケイ素基含有ポリエーテル重合体の製造方法
WO2018156631A1 (en) 2017-02-23 2018-08-30 3M Innovative Properties Company Air and water barrier article including inelastic porous layer
US10808076B2 (en) * 2017-03-23 2020-10-20 The Dallas Group Of America, Inc. Purification of crude polyalkylene oxide polymers with acid functionalized silicas and metal silicates
WO2019005790A1 (en) 2017-06-26 2019-01-03 Dow Silicones Corporation SILICONE-POLYETHER COPOLYMER WITH ISOCYANATE FUNCTION, SILICONE-POLYETHER-URETHANE COPOLYMER FORMED THEREWITH, SEALING PRODUCTS COMPRISING THE SAME, AND ASSOCIATED METHODS
WO2019159972A1 (ja) 2018-02-13 2019-08-22 株式会社カネカ ワーキングジョイント用１成分型硬化性組成物
CN112424269B (zh) 2018-06-07 2023-02-28 株式会社钟化 发泡体用树脂组合物、发泡体及发泡体的制造方法
US11760841B2 (en) 2018-12-21 2023-09-19 Dow Silicones Corporation Silicone-polycarbonate copolymer, sealants comprising same, and related methods
CN113272363B (zh) 2018-12-21 2023-02-17 美国陶氏有机硅公司 硅酮-有机共聚物、包括硅酮-有机共聚物的密封剂和相关方法
EP3741788A1 (de) 2019-05-24 2020-11-25 Covestro Deutschland AG Verfahren zur herstellung von polyoxyalkylenpolyol-mischungen
CN114206605A (zh) 2019-08-07 2022-03-18 3M创新有限公司 带材、包括带材和复合层的制品及相关方法
EP3838963A1 (de) 2019-12-17 2021-06-23 Covestro Deutschland AG Verfahren zur herstellung von polyoxyalkylenpolyesterpolyolen
US11525375B2 (en) 2020-04-09 2022-12-13 General Electric Company Modeling and control of gas cycle power plant operation with variant control profile
KR20230154796A (ko) 2021-03-12 2023-11-09 에이지씨 가부시키가이샤 경화성 조성물 및 경화물
WO2023057328A1 (de) 2021-10-07 2023-04-13 Covestro Deutschland Ag Verfahren zur herstellung von polyoxyalkylenpolyesterpolyolen
PL440409A1 (pl) * 2022-02-18 2023-08-21 Pcc Rokita Spółka Akcyjna Proces otrzymywania poliolu polieterowego o niskiej zawartości jonów metali alkalicznych

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES332250A1 (es) 1965-10-15 1967-07-16 The General Tire & Rubber Company Procedimiento para preparar dioles de eter polioxialcohilenico.
JPS5770124A (en) * 1980-10-20 1982-04-30 Dai Ichi Kogyo Seiyaku Co Ltd Purification of polyether-polyol
DE3107449A1 (de) * 1981-02-27 1982-09-16 Basf Ag, 6700 Ludwigshafen Verfahren zur reinigung von polytetramethylenetherglykolen
DE3229216A1 (de) * 1982-08-05 1984-02-09 Basf Ag, 6700 Ludwigshafen Verfahren zur reinigung von rohen polyether-polyolen
US4721818A (en) * 1987-03-20 1988-01-26 Atlantic Richfield Company Purification of polyols prepared using double metal cyanide complex catalysts
US4877906A (en) * 1988-11-25 1989-10-31 Arco Chemical Technology, Inc. Purification of polyols prepared using double metal cyanide complex catalysts
US4987271A (en) * 1989-02-17 1991-01-22 Asahi Glass Company, Ltd. Method for purifying a polyoxyalkylene alcohol
JP2995568B2 (ja) * 1989-05-09 1999-12-27 旭硝子株式会社 ポリアルキレンオキシド誘導体の製造法
JP2954604B2 (ja) 1989-09-01 1999-09-27 旭硝子株式会社 ポリエーテル類の精製法
JPH0696635B2 (ja) * 1989-09-01 1994-11-30 旭硝子株式会社 ポリエーテル類の精製方法
DE4014484A1 (de) * 1990-05-07 1991-11-14 Basf Ag Verfahren zur reinigung von polyalkylenetherglykolen
DE69125789T2 (de) * 1990-05-11 1997-08-14 Asahi Glass Co Ltd Verfahren zur herstellung einer polyoxyalkylenverbindungen
US5099075A (en) * 1990-11-02 1992-03-24 Olin Corporation Process for removing double metal cyanide catalyst residues from a polyol
JP3140109B2 (ja) 1991-10-08 2001-03-05 旭硝子株式会社 ポリエーテル類の精製方法
CA2068237A1 (en) * 1991-10-18 1993-04-19 Edward C. Nieh Catalyst removal from alcohol alkoxylates using acid clays
US5352848A (en) * 1992-12-29 1994-10-04 Uop Nitrile removal in an etherification process
JPH07258136A (ja) * 1994-02-28 1995-10-09 Texaco Dev Corp 複数段蒸留におけるエネルギー保存方法
DE69519832T2 (de) * 1994-07-18 2001-06-07 Asahi Glass Co Ltd Verfahren zur Polyetherreinigung
US5519162A (en) * 1994-08-23 1996-05-21 Rohm And Haas Company Method for removing a hydrogen cyanide contaminant from an organic liquid

Also Published As

Publication number Publication date
US5973096A (en) 1999-10-26
DE69519832T2 (de) 2001-06-07
US5811566A (en) 1998-09-22
EP0693513A2 (de) 1996-01-24
JPH08231707A (ja) 1996-09-10
EP0693513A3 (de) 1997-01-02
EP0693513B1 (de) 2001-01-10
JP3981162B2 (ja) 2007-09-26

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