DK1188779T3 - Fremgangsmåde til fremstilling af en opbevaringsstabil, rheologisk aktiv oplösning af urinstofurethan med bred forligelighed - Google Patents

Fremgangsmåde til fremstilling af en opbevaringsstabil, rheologisk aktiv oplösning af urinstofurethan med bred forligelighed

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Publication number
DK1188779T3
DK1188779T3 DK01116384T DK01116384T DK1188779T3 DK 1188779 T3 DK1188779 T3 DK 1188779T3 DK 01116384 T DK01116384 T DK 01116384T DK 01116384 T DK01116384 T DK 01116384T DK 1188779 T3 DK1188779 T3 DK 1188779T3
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DK
Denmark
Prior art keywords
preparation
storage stable
active solution
urea urethane
broad compatibility
Prior art date
Application number
DK01116384T
Other languages
English (en)
Inventor
Karlheinz Haubennestel
Ulrich Dr Orth
Axel Woocker
Heribert Holtkamp
Christoph Buchmann
Original Assignee
Byk Chemie Gmbh
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 Byk Chemie Gmbh filed Critical Byk Chemie Gmbh
Application granted granted Critical
Publication of DK1188779T3 publication Critical patent/DK1188779T3/da

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225Polyamines
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G71/00Macromolecular compounds obtained by reactions forming a ureide or urethane link, otherwise, than from isocyanate radicals in the main chain of the macromolecule
    • C08G71/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08Processes
    • C08G18/16Catalysts
    • C08G18/22Catalysts containing metal compounds
    • C08G18/225Catalysts containing metal compounds of alkali or alkaline earth metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805Compounds having only one group containing active hydrogen
    • C08G18/2815Monohydroxy compounds
    • C08G18/282Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805Compounds having only one group containing active hydrogen
    • C08G18/2815Monohydroxy compounds
    • C08G18/282Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • C08G18/2825Alkanols, cycloalkanols or arylalkanols including terpenealcohols having at least 6 carbon atoms
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805Compounds having only one group containing active hydrogen
    • C08G18/2815Monohydroxy compounds
    • C08G18/283Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805Compounds having only one group containing active hydrogen
    • C08G18/2815Monohydroxy compounds
    • C08G18/284Compounds containing ester groups, e.g. oxyalkylated monocarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225Polyamines
    • C08G18/3237Polyamines aromatic
    • C08G18/324Polyamines aromatic containing only one aromatic ring
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/04Thixotropic paints

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Paints Or Removers (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)
DK01116384T 2000-08-16 2001-07-06 Fremgangsmåde til fremstilling af en opbevaringsstabil, rheologisk aktiv oplösning af urinstofurethan med bred forligelighed DK1188779T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10039837A DE10039837C2 (de) 2000-08-16 2000-08-16 Verfahren zur Herstellung einer lagerstabilen, rheologisch wirksamen Harnstoffurethan-Lösung mit breiter Verträglichkeit

Publications (1)

Publication Number Publication Date
DK1188779T3 true DK1188779T3 (da) 2004-08-30

Family

ID=7652494

Family Applications (1)

Application Number Title Priority Date Filing Date
DK01116384T DK1188779T3 (da) 2000-08-16 2001-07-06 Fremgangsmåde til fremstilling af en opbevaringsstabil, rheologisk aktiv oplösning af urinstofurethan med bred forligelighed

Country Status (10)

Country Link
EP (1) EP1188779B1 (da)
JP (1) JP4942262B2 (da)
KR (1) KR100796040B1 (da)
CN (1) CN1204117C (da)
AT (1) ATE268790T1 (da)
CA (1) CA2352660C (da)
DE (2) DE10039837C2 (da)
DK (1) DK1188779T3 (da)
ES (1) ES2220631T3 (da)
TW (1) TWI226892B (da)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241853B3 (de) 2002-09-09 2004-01-22 Byk-Chemie Gmbh Polymeres Harnstoffurethan als Rheologiesteuerungsmittel und Verfahren zur Herstellung
WO2005005557A1 (en) * 2003-07-08 2005-01-20 Nuplex Resins B.V. Carbon-substituted methyl amine derivatives and their use as a rheology control agent
KR100482427B1 (ko) * 2003-12-19 2005-04-14 박장원 성형몸체와 내부 공동구조체가 일체형으로 형성되는 가교발포성형체와 그 성형방법
US7144450B2 (en) * 2004-12-04 2006-12-05 Xerox Corporation Phase change inks containing trans-1,2-cyclohexane bis(urea-urethane) compounds
US7560587B2 (en) * 2004-12-04 2009-07-14 Xerox Corporation Bis[urea-urethane] compounds
US7220300B2 (en) * 2004-12-04 2007-05-22 Xerox Corporation Phase change inks containing bis(urea-urethane) compounds
WO2007105258A1 (ja) * 2006-03-07 2007-09-20 The Yokohama Rubber Co., Ltd. 揺変性付与剤およびこれを用いた硬化性樹脂組成物ならびに硬化性樹脂組成物の使用方法
DE102006010721B4 (de) * 2006-03-08 2010-04-15 Byk-Chemie Gmbh Biuretverbindungen zur Rheologiesteuerung
KR100803024B1 (ko) * 2006-07-25 2008-02-14 케이에스케미칼 주식회사 도료 내에서 점탄성 조절제 역할을 하는 우레탄-우레아용액의 제조방법
DE102008029858A1 (de) * 2008-04-23 2009-10-29 Byk-Chemie Gmbh Stabile Dispersionen von anorganischen Nanopartikeln
DE202008008419U1 (de) 2008-04-23 2009-06-04 Byk-Chemie Gmbh Stabile Dispersionen von anorganischen Nanopartikeln
DE102008038488A1 (de) 2008-08-20 2010-02-25 Henkel Ag & Co. Kgaa Feuchtigkeitshärtende wasserfeste Beschichtung
DE102008059702A1 (de) 2008-12-01 2010-06-02 Byk-Chemie Gmbh Verfahren zur Herstellung rheologisch wirksamer Harnstoffurethane in organischen Salzen
RU2490284C2 (ru) * 2009-04-21 2013-08-20 Хантсмэн Интернэшнл Ллс Полиизоцианатная композиция
DE102009021912A1 (de) 2009-05-19 2010-12-02 Byk-Chemie Gmbh Aus oxetan-basierten Makromonomeren erhältliche Polymere, Verfahren zu deren Herstellung und deren Verwendung als Additive in Beschichtungsmitteln und Kunststoffen
DE102009021913A1 (de) 2009-05-19 2010-12-02 Byk-Chemie Gmbh Terminal ungesättigte, oxetan-basierte Makromonomere und Verfahren zu deren Herstellung
EP2292675A1 (de) 2009-09-08 2011-03-09 BYK-Chemie GmbH Polyharnstoffe als Rheologiesteuerungsmittel
CN102725365B (zh) 2010-01-28 2014-11-26 比克化学股份有限公司 含有脲组分和酰胺组分的漆料配制剂
ES2535938T3 (es) * 2011-02-22 2015-05-19 Basf Se Agentes para modificar la reología para masas de recubrimiento que pueden curar por radiación
EP2644633A1 (en) * 2012-03-29 2013-10-02 Huntsman International Llc Isocyanate-based prepolymer
EP2644632A1 (en) 2012-03-29 2013-10-02 Huntsman International Llc Isocyanate-based prepolymer
WO2014111102A2 (de) * 2012-12-15 2014-07-24 Byk-Chemie Gmbh Komposition zur rheologiesteuerung
KR102379047B1 (ko) * 2014-04-15 2022-03-25 비와이케이-케미 게엠베하 유동학적 조절제로서 적합한 저장-안정성 우레아 제조물
DE102015004640A1 (de) 2014-04-15 2015-10-15 Byk-Chemie Gmbh Rheologiesteuerungsmittel umfassend eine Wirkstoffkombination
US10377906B2 (en) 2014-04-15 2019-08-13 Byk-Chemie Gmbh Composition for rheology control
CN107849209B (zh) * 2015-07-27 2020-12-15 毕克化学有限公司 用于流变控制的脲氨酯
KR101835720B1 (ko) 2015-11-30 2018-03-08 케이에스케미칼 주식회사 전단유동화 특성을 갖는 점탄성 조절제의 제조방법
KR102227766B1 (ko) * 2017-01-30 2021-03-15 비와이케이-케미 게엠베하 레올로지 제어제로서의 및 그 중의 우레아-기- 및/또는 우레탄-기-함유 아미드, 그의 제조 방법 및 그의 용도
EP3459985B1 (en) * 2017-09-22 2020-06-17 Cliq Swisstech Gmbh Urea urethanes (ii)
CN110785447B (zh) 2017-04-13 2022-02-11 毕克化学有限公司 适合作为增稠剂的聚合物
EP3428233A1 (de) 2017-07-13 2019-01-16 Sika Technology Ag Beschichtungssystem mit hoher oberflächenrauhigkeit
US11795343B2 (en) 2017-11-14 2023-10-24 Basf Se Process for preparing urea urethane polymer
CN111491973B (zh) * 2017-12-21 2022-03-22 毕克化学有限公司 含脲和氨基甲酸酯基团的抗沉降流变控制添加剂
US11702385B2 (en) 2017-12-21 2023-07-18 Byk-Chemie Gmbh Urea group containing anti-sagging rheology control agents
KR102071950B1 (ko) 2017-12-28 2020-01-31 낙우산업(주) 천연페인트에서 증점 및 요변성 거동을 개선하는 나노 점토 및 그 제조방법
CN108070066B (zh) * 2017-12-29 2020-11-27 陈鹏 一种涂料油墨防沉剂及其制备方法
KR102645600B1 (ko) * 2018-03-27 2024-03-08 어드밴식스 레진즈 앤드 케미컬즈 엘엘씨 요변성 레올로지 개질제 조성물
JP7332251B2 (ja) * 2018-06-28 2023-08-23 ホヤ レンズ タイランド リミテッド 光学部材用重合性組成物
JP7196316B2 (ja) 2019-01-04 2022-12-26 ベーイプシロンカー ヘミー ゲゼルシャフト ミット ベシュレンクター ハフトゥング 尿素基含有レオロジー制御添加剤
JP7314298B2 (ja) 2019-03-14 2023-07-25 ベーイプシロンカー ヘミー ゲゼルシャフト ミット ベシュレンクター ハフトゥング 環状アミドを含むレオロジー制御添加剤
WO2022043175A1 (en) * 2020-08-24 2022-03-03 Basf Se Urea urethane compounds
US20240002582A1 (en) 2020-12-04 2024-01-04 Byk-Chemie Gmbh Rheology control agent
DE102021128685A1 (de) 2021-11-04 2023-05-04 Voco Gmbh Hochwirksames, kieselsäurefreies, lagerstabiles dentales Ätzgel
WO2024008765A1 (en) 2022-07-06 2024-01-11 Byk-Chemie Gmbh Composition comprising a cyclic amide

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415040A (en) * 1977-07-04 1979-02-03 Kanebo Ltd Bobbin exchange apparatus fof spun yarn winder
DE2822908C2 (de) * 1978-05-26 1980-03-20 Byk-Mallinckrodt Chemische Produkte Gmbh, 4230 Wesel Thixotropiemittel für Überzugsmittel
ATE29138T1 (de) * 1984-01-27 1987-09-15 Byk Chemie Gmbh Als dispergiermittel geeignete additionsverbindungen, verfahren zu ihrer herstellung, ihre verwendung und damit beschichtete feststoffe.
JPH0786133B2 (ja) * 1986-03-13 1995-09-20 大日本インキ化学工業株式会社 揺変性被覆組成物
US4683279A (en) * 1986-07-08 1987-07-28 Air Products And Chemicals, Inc. Low melting urethane linked toluenediisocyanates
DE3706151A1 (de) * 1987-02-26 1988-09-08 Bayer Ag Polyharnstoff-modifizierte polyetherurethane und ihre verwendung als emulsionsspalter fuer wasser-in-oel-emulsionen
US4942213A (en) * 1987-12-04 1990-07-17 Byk-Chemie Gmbh Addition compounds useful as dispersing agents and dispersion stabilizers, process for producing them, their use and solids coated therewith
JP2974491B2 (ja) * 1992-03-05 1999-11-10 共栄社化学株式会社 非水系塗料用垂れ防止剤
DE19636382A1 (de) * 1996-09-09 1998-03-12 Bayer Ag Pigmentpräparationen für den Ink-Jet-Druck
DE19919482C2 (de) * 1999-04-29 2001-04-26 Byk Chemie Gmbh Verfahren zur Herstellung eines Thixotropie-Mittels und dessen Verwendung
JP3904349B2 (ja) * 1999-08-05 2007-04-11 三井化学株式会社 揺変性付与剤およびその製造方法

Also Published As

Publication number Publication date
JP2002105042A (ja) 2002-04-10
CN1338453A (zh) 2002-03-06
ES2220631T3 (es) 2004-12-16
TWI226892B (en) 2005-01-21
DE10039837C2 (de) 2003-03-20
CA2352660C (en) 2008-10-21
EP1188779B1 (de) 2004-06-09
KR100796040B1 (ko) 2008-01-21
DE10039837A1 (de) 2002-03-07
KR20020014680A (ko) 2002-02-25
JP4942262B2 (ja) 2012-05-30
EP1188779A1 (de) 2002-03-20
DE50102521D1 (de) 2004-07-15
CN1204117C (zh) 2005-06-01
ATE268790T1 (de) 2004-06-15
CA2352660A1 (en) 2002-02-16

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