PL2780384T5 - Ulepszona kompozycja pianki poliuretanowej - Google Patents

Ulepszona kompozycja pianki poliuretanowej

Info

Publication number
PL2780384T5
PL2780384T5 PL12799090T PL12799090T PL2780384T5 PL 2780384 T5 PL2780384 T5 PL 2780384T5 PL 12799090 T PL12799090 T PL 12799090T PL 12799090 T PL12799090 T PL 12799090T PL 2780384 T5 PL2780384 T5 PL 2780384T5
Authority
PL
Poland
Prior art keywords
polyurethane foam
foam composition
improved polyurethane
improved
composition
Prior art date
Application number
PL12799090T
Other languages
English (en)
Other versions
PL2780384T3 (pl
Inventor
John VERSTEGEN
Bart Vervoort
Peter Geboes
Original Assignee
Soudal
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47351575&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PL2780384(T5) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Soudal filed Critical Soudal
Publication of PL2780384T3 publication Critical patent/PL2780384T3/pl
Publication of PL2780384T5 publication Critical patent/PL2780384T5/pl

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
    • 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
    • C08G18/80—Masked polyisocyanates
    • C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
    • C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
    • C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
    • C08G18/8012—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with diols
    • C08G18/8019—Masked aromatic polyisocyanates
    • 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
    • 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
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation 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
    • C08G18/2805—Compounds 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
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805—Compounds having only one group containing active hydrogen
    • C08G18/2815—Monohydroxy compounds
    • C08G18/282—Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • C08G18/2825—Alkanols, cycloalkanols or arylalkanols including terpenealcohols having at least 6 carbon atoms
    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • 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
    • 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
    • C08G18/80—Masked polyisocyanates
    • C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
    • C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
    • C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
    • C08G18/8022—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with polyols having at least three hydroxy groups
    • C08G18/8029—Masked aromatic polyisocyanates
    • 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
    • C08G18/80—Masked polyisocyanates
    • C08G18/8061—Masked polyisocyanates masked with compounds having only one group containing active hydrogen
    • C08G18/8064—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with monohydroxy compounds
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/01—Hydrocarbons
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/02—Halogenated hydrocarbons
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • 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
    • C08G2101/00—Manufacture of cellular products

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
PL12799090T 2011-11-16 2012-11-14 Ulepszona kompozycja pianki poliuretanowej PL2780384T5 (pl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11189441 2011-11-16
PCT/EP2012/072642 WO2013072380A2 (en) 2011-11-16 2012-11-14 Improved polyurethane foam composition
EP12799090.1A EP2780384B2 (en) 2011-11-16 2012-11-14 Improved polyurethane foam composition

Publications (2)

Publication Number Publication Date
PL2780384T3 PL2780384T3 (pl) 2018-01-31
PL2780384T5 true PL2780384T5 (pl) 2020-11-02

Family

ID=47351575

Family Applications (1)

Application Number Title Priority Date Filing Date
PL12799090T PL2780384T5 (pl) 2011-11-16 2012-11-14 Ulepszona kompozycja pianki poliuretanowej

Country Status (5)

Country Link
US (1) US10059794B2 (pl)
EP (1) EP2780384B2 (pl)
PL (1) PL2780384T5 (pl)
SI (1) SI2780384T2 (pl)
WO (1) WO2013072380A2 (pl)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2909410T3 (pl) 2012-08-29 2024-03-25 Soudal Ulepszona izolacja okienna
US9925753B2 (en) 2013-11-26 2018-03-27 Rohm And Haas Company Weather-resistive barriers from self collapsing polyurethane foams
CN108026247B (zh) 2015-09-29 2022-03-25 陶氏环球技术有限责任公司 基于甲苯二异氰酸酯缩二脲的聚氨酯泡沫预聚物
CN114573778A (zh) * 2022-03-04 2022-06-03 固诺(天津)实业有限公司 低压双组分发泡聚氨酯及其应用
CN114572563B (zh) * 2022-03-04 2024-03-12 固诺(天津)实业有限公司 双组分胶包装袋、双组分发泡聚氨酯及其应用
CA3257349A1 (en) 2022-05-17 2025-04-07 Evonik Operations Gmbh POLYURETHANE FOAM PRODUCTION
EP4282890A1 (de) 2022-05-25 2023-11-29 Evonik Operations GmbH Herstellung von polyurethanschaum unter verwendung von ionischen flüssigkeiten
EP4282892A1 (de) 2022-05-25 2023-11-29 Evonik Operations GmbH Herstellung von polyurethanschaum unter verwendung von katalysatoren auf basis ionischer flüssigkeiten
KR20250022121A (ko) 2022-06-08 2025-02-14 에보니크 오퍼레이션즈 게엠베하 난연성 폴리우레탄 발포체의 제조
KR20250021531A (ko) 2022-06-08 2025-02-13 에보니크 오퍼레이션즈 게엠베하 폴리우레탄 발포체를 제조하기 위한 폴리에테르-실록산 블록 공중합체
EP4299656A1 (de) 2022-07-01 2024-01-03 Evonik Operations GmbH Herstellung von propoxylierten benzoldicarbonsäureamiden und dem entsprechenden polyurethanschaum
KR20250073373A (ko) 2022-09-28 2025-05-27 에보니크 오퍼레이션즈 게엠베하 SiOC-결합된, 선형 폴리디알킬실록산-폴리에테르 블록 공중합체를 제조하는 방법 및 그의 용도
CN120712304A (zh) 2023-02-17 2025-09-26 赢创运营有限公司 用于包含固体物质的聚氨酯泡沫的稳定剂
WO2024170429A1 (de) 2023-02-17 2024-08-22 Evonik Operations Gmbh Stabilisatoren für polyurethanschaumstoffe enthaltend recycling-polyol
WO2025082815A1 (de) 2023-10-19 2025-04-24 Evonik Operations Gmbh Stabilisatoren für polyurethanschaumstoffe
EP4606832A1 (de) 2024-02-22 2025-08-27 Evonik Operations GmbH Stabilisatoren für polyurethanschaumstoffe enthaltend recycling-polyol
CA3279246A1 (en) 2024-07-12 2026-03-01 Evonik Operations Gmbh Production of polyurethane foam

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137638A (en) 1983-04-05 1984-10-10 Bostik Ltd Adhesive compositions
GB8416230D0 (en) * 1984-06-26 1984-08-01 Btr Plc Polyurethanes
DE3519692A1 (de) 1985-06-01 1986-12-04 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von elastischen polyurethan-weichschaumstoffen und auf diese weise hergestellte formkoerper
US4863994A (en) * 1988-06-24 1989-09-05 The Dow Chemical Company Use of monohydric alcohols in molded polyurethane resins
MX9701338A (es) * 1994-08-22 1997-05-31 Henkel Kgaa Composiciones de poliuretano con bajo contenido endiisocianatos monomeros.
EP0771829A1 (en) 1995-10-30 1997-05-07 Basf Corporation Process of making an integral skin polyurethane article
US5668191A (en) 1995-12-21 1997-09-16 Arco Chemical Technology, L.P. One-shot cold molded flexible polyurethane foam from low primary hydroxyl polyols and process for the preparation thereof
US5990257A (en) 1998-01-22 1999-11-23 Witco Corporation Process for producing prepolymers which cure to improved sealants, and products formed thereby
US5817860A (en) 1998-03-20 1998-10-06 Essex Specialty Products, Inc. Polyurethane prepolymer compositions, foams made therefrom and methods of making each thereof
DE19831285A1 (de) 1998-07-13 2000-01-20 Rathor Ag Appenzell Prepolymerabmischung mit Silan-terminierten Prepolymeren
DE19939840A1 (de) 1999-08-23 2001-03-01 Bayer Ag Verfahren zur Herstellung von Isocyanatendgruppen enthaltenden Prepolymeren mit einem geringem Anteil an eingesetzten Ausgangsisocyanaten
AU1450201A (en) 1999-11-30 2001-06-12 Crompton Corporation High performance polyurethane elastomers from mdi prepolymers with reduced content of free mdi monomer
DE10044712A1 (de) 2000-09-08 2002-03-21 Basf Ag Verfahren zur Herstellung von schalldämpfenden Polyurethanschäumen
GB0106988D0 (en) 2001-03-20 2001-05-09 Baxenden Chem Flexible one component foam
GB0108061D0 (en) 2001-03-30 2001-05-23 Baxenden Chem Low monomer one component foam
GB0108060D0 (en) 2001-03-30 2001-05-23 Baxenden Chem Low monomer prepolymer
DE10229519A1 (de) 2001-07-10 2003-01-30 Henkel Kgaa Reaktive Polyurethane mit einem geringen Gehalt an monomeren Diisocyanaten
WO2003046041A1 (en) 2001-11-29 2003-06-05 Huntsman International Llc Viscoelastic polyurethanes
DE10311607A1 (de) * 2003-03-14 2004-09-23 Basf Ag 1-Komponenten-Polyurethan-Montageschaum
PL361365A1 (pl) 2003-07-21 2004-01-12 ORION Sp.z o.o. Kompozycja prepolimerowa do wytwarzania poliuretanowej piany w pojemniku aerozolowym, o niskiej zawartości monomeru izocyjanianowego
DE10357093A1 (de) 2003-12-06 2005-07-07 Rathor Ag Monomerarme Prepolymerzusammensetzung
WO2006042305A1 (en) 2004-10-08 2006-04-20 Dow Global Technologies Inc. Low volatile isocyanate monomer containing polyurethane prepolymer and adhesive system
DE102004063001A1 (de) 2004-12-22 2006-07-13 Basf Ag Polyolzusammensetzung und Isocyanatprepolymer für 1-Komponenten-Polyurethanschaumsysteme
ATE478907T1 (de) 2006-04-12 2010-09-15 Basf Se Verfahren zur herstellung von polyurethanen
EP1975187A1 (de) 2007-03-28 2008-10-01 Sika Technology AG Verfahren zur Herstellung von Polyurethanzusammensetzungen mit niedrigem Isocyanat-Monomergehalt
US8455679B2 (en) * 2008-12-12 2013-06-04 Basf Se Prepolymer systems having reduced monomeric isocyanate contents
DE102009045027A1 (de) 2009-09-25 2011-03-31 Henkel Ag & Co. Kgaa Monomerarme Polyurethanschäume
EP2383304A1 (en) 2010-04-27 2011-11-02 de Schrijver, Aster Composition for one-component polyurethane foams
EP2392407B1 (en) 2010-06-04 2012-12-26 Soudal Click-and-fix coupling piece for interchangeable dispensing tools
BE1020534A5 (nl) 2010-06-04 2013-12-03 Soudal Schroefkoppelstuk met dubbele functie.
BE1020419A5 (nl) 2010-10-18 2013-10-01 Soudal Handbediening applicator geschikt voor pistoolklep containers.
EP2481764A1 (en) 2011-01-27 2012-08-01 de Schrijver, Aster Composition for one-component polyurethane foams having low free monomeric MDI content

Also Published As

Publication number Publication date
EP2780384B2 (en) 2020-06-10
US10059794B2 (en) 2018-08-28
EP2780384B1 (en) 2017-08-02
WO2013072380A3 (en) 2014-04-03
SI2780384T1 (sl) 2017-12-29
EP2780384A2 (en) 2014-09-24
WO2013072380A2 (en) 2013-05-23
US20140309323A1 (en) 2014-10-16
SI2780384T2 (sl) 2020-09-30
PL2780384T3 (pl) 2018-01-31

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