MX2007002696A - Metodo para producir materiales de espuma suave de poliuretano. - Google Patents

Metodo para producir materiales de espuma suave de poliuretano.

Info

Publication number
MX2007002696A
MX2007002696A MX2007002696A MX2007002696A MX2007002696A MX 2007002696 A MX2007002696 A MX 2007002696A MX 2007002696 A MX2007002696 A MX 2007002696A MX 2007002696 A MX2007002696 A MX 2007002696A MX 2007002696 A MX2007002696 A MX 2007002696A
Authority
MX
Mexico
Prior art keywords
foam materials
soft foam
polyether alcohol
dmc
stored
Prior art date
Application number
MX2007002696A
Other languages
English (en)
Inventor
Berend Eling
Inge Rotermund
Kathrin Harre
Raimund Ruppel
Original Assignee
Basf Ag
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 Basf Ag filed Critical Basf Ag
Publication of MX2007002696A publication Critical patent/MX2007002696A/es

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
    • C08G18/08—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
    • C08G18/08—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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
    • 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
    • C08G18/28—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
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
    • 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
    • C08G18/4833—Polyethers containing oxyethylene units
    • C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
    • 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
    • C08G18/4866—Polyethers having a low unsaturation value
    • 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
    • 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
    • C08G65/2645—Metals or compounds thereof, e.g. salts
    • C08G65/2663—Metal cyanide catalysts, i.e. DMC's
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/005—< 50kg/m3
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

La invencion se refiere a un metodo para producir materiales de espuma suave de poliuretano, en materiales de espuma suave en forma de poliuretano particular, haciendo reaccionar a) poliisocianatos con compuestos b) que tienen por lo menos dos grupos hidrogeno que reaccionan con grupos isocianato. La invencion se caracteriza porque los componentes contienen b), b1a) por lo menos un alcohol particular, que contiene un bloque extremo el cual se almacena por medio de un catalizador de DMC, dicho bloque extremo estando hecho de unidades de oxido de etileno que tienen un maximo de 10% en peso, en relacion con el peso del oxido de alquileno almacenado por medio de catalizadores de DMC, y/o b1b) por lo menos un alcohol de polieter que contiene una mezcla terminal de oxido de etileno y oxido de propileno que tienen un contenido de oxido de etileno en la mezcla de por lo menos 25% en peso, almacenado por medio de catalizadores de DMC, b2a) ademas de ser por lo menos un alcohol de polieter que contiene subsecuentemente unidades de oxido de propileno, y/o b2b) por lo menos un alcohol de polieter de injerto.
MX2007002696A 2004-09-28 2005-09-20 Metodo para producir materiales de espuma suave de poliuretano. MX2007002696A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004047524A DE102004047524A1 (de) 2004-09-28 2004-09-28 Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen
PCT/EP2005/010124 WO2006034800A1 (de) 2004-09-28 2005-09-20 Verfahren zur herstellung von polyurethan-weichschaumstoffen

Publications (1)

Publication Number Publication Date
MX2007002696A true MX2007002696A (es) 2007-05-16

Family

ID=35124657

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2007002696A MX2007002696A (es) 2004-09-28 2005-09-20 Metodo para producir materiales de espuma suave de poliuretano.

Country Status (10)

Country Link
US (1) US8362099B2 (es)
EP (1) EP1797129B1 (es)
JP (1) JP2008514742A (es)
KR (1) KR20070104329A (es)
CN (1) CN101031599B (es)
AT (1) ATE402203T1 (es)
DE (2) DE102004047524A1 (es)
ES (1) ES2308542T3 (es)
MX (1) MX2007002696A (es)
WO (1) WO2006034800A1 (es)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005047360A1 (ja) * 2003-11-12 2005-05-26 Bridgestone Corporation 難変色軟質ポリウレタンフォーム
TW200801060A (en) * 2006-02-28 2008-01-01 Asahi Glass Co Ltd Flexible polyurethane foam and process for producing the same
US20100047550A1 (en) 2007-01-16 2010-02-25 Basf Se Hybrid systems consisting of foamed thermoplastic elastomers and polyurethanes
BRPI0907096A2 (pt) 2008-01-29 2015-07-07 Basf Se Processos para preparar poliéter álcoois e para produzir poliuretanos, e, poliéter álcool
CN101412798B (zh) * 2008-11-21 2011-08-10 优洁（亚洲）有限公司 软质聚氨酯低回弹泡沫及其制备方法
ES2590211T3 (es) 2008-12-23 2016-11-18 Basf Se Promotor de adhesión para compuestos adhesivos que comprenden un plástico y un producto de poli-adición de poli-isocianato
EP2500376A1 (de) 2011-03-17 2012-09-19 Basf Se Antistatische oder elektrisch leitfähige Polyurethane
US9150684B2 (en) * 2011-05-26 2015-10-06 Basf Se High resilience polyurethane foams comprising castor oil
US9377587B2 (en) * 2012-12-13 2016-06-28 The University Of Connecticut Technology Partnership & Licensing Fiber optic coupler array
CN103059259B (zh) * 2013-01-21 2014-12-03 泉州市西特吉新材料有限公司 一种聚氨酯微孔弹性轨道垫板及其制备方法
KR102314456B1 (ko) 2013-04-16 2021-10-19 바스프 에스이 인 함유 난연제
JP6698526B2 (ja) 2013-12-02 2020-05-27 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ 低減されたアルデヒドの排出を有するポリウレタン
CN105764946B (zh) 2013-12-02 2019-12-27 巴斯夫欧洲公司 具有降低的醛排放的聚氨酯
CN106459367B (zh) 2014-06-13 2019-12-06 巴斯夫欧洲公司 具有降低的醛排放的聚氨酯
WO2016188675A1 (de) 2015-05-28 2016-12-01 Basf Se Polyurethane mit reduzierter aldehydemission
WO2018172287A1 (en) 2017-03-20 2018-09-27 Basf Se Composite element
CN110799565B (zh) 2017-06-27 2022-07-12 巴斯夫欧洲公司 具有良好电磁辐射穿透性的聚氨酯
CA3064515A1 (en) 2017-06-27 2019-01-03 Basf Se Flexible polyurethane foams having improved air permeability
CN111757899B (zh) 2018-02-22 2023-01-17 巴斯夫欧洲公司 对热变形和撕裂伸长率具有优异耐受性的基于聚氨酯的聚合物材料
US20220064398A1 (en) 2018-12-19 2022-03-03 Basf Se Flexible polyurethane foams having improved long-term performance characteristics
JP7553449B2 (ja) 2018-12-20 2024-09-18 ビーエーエスエフ ソシエタス・ヨーロピア コンパクトなポリウレタン
ES2980408T3 (es) 2019-09-12 2024-10-01 Basf Se Resinas de PU compuestas
MX2023000159A (es) 2020-07-01 2023-02-16 Basf Se Espumas de poliuretano con propiedades acusticas mejoradas.
EP4015211A1 (en) 2020-12-15 2022-06-22 Basf Se Method to generate particle mats from reactive pu systems
CN116761724A (zh) 2020-12-15 2023-09-15 巴斯夫欧洲公司 预测堆叠颗粒垫的机械属性的方法
WO2024008728A1 (en) 2022-07-05 2024-01-11 Basf Se Solvent removal in a process for recycling one or more polymers, such as polyurethanes, contained in a solid material
WO2024008727A1 (en) 2022-07-05 2024-01-11 Basf Se A process for recycling one or more polymers, such as polyurethanes, contained in a solid material
WO2024008726A1 (en) 2022-07-05 2024-01-11 Basf Se A process for producing one or more polymers selected from the group consisting of polyurethanes, polyurethane ureas, polyisocyanurates, and a mixture of two or more thereof, from a solid material w
WO2024046793A1 (en) 2022-08-31 2024-03-07 Basf Se Process for thermal treatment of a multicomponent plastic waste material

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235114A (en) * 1991-04-29 1993-08-10 Olin Corporation Process for purifying and end-capping polyols made using double metal cyanide catalysts
US5144093A (en) * 1991-04-29 1992-09-01 Olin Corporation Process for purifying and end-capping polyols made using double metal cyanide catalysts
US5563221A (en) * 1995-06-21 1996-10-08 Arco Chemical Technology, L.P. Process for making ethylene oxide-capped polyols from double metal cyanide-catalyzed polyols
DE19545695A1 (de) 1995-12-07 1997-06-12 Zanke Ulrich Prof Dr Ing Habil Verfahren und Einrichtung zur Verbesserung der Verkehrssicherheit
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
US5605939A (en) * 1996-01-26 1997-02-25 Arco Chemical Technology, L.P. Poly(oxypropylene/oxyethylene) random polyols useful in preparing flexible high resilience foam with reduced tendencies toward shrinkage and foam prepared therewith
US6008263A (en) * 1998-04-03 1999-12-28 Lyondell Chemical Worldwide, Inc. Molded and slab polyurethane foam prepared from double metal cyanide complex-catalyzed polyoxyalkylene polyols and polyols suitable for the preparation thereof
DE19928156A1 (de) * 1999-06-19 2000-12-28 Bayer Ag Aus Polyetherpolyolen hergestellte Polyurethan-Weichschäume
DE19941242A1 (de) * 1999-08-31 2001-03-08 Basf Ag Polyetheralkohole
DE19960148A1 (de) * 1999-12-14 2001-06-21 Basf Ag Verfahren zur Herstellung von Polyetheralkoholen
CN1257928C (zh) * 2001-07-18 2006-05-31 旭硝子株式会社 多元醇和聚合物分散多元醇的制造方法
US20040064001A1 (en) * 2002-09-30 2004-04-01 Stephan Ehlers Processes for preparing ethylene oxide-capped polyols
US6855742B2 (en) * 2003-01-28 2005-02-15 Bayer Antwerp, N.V. Agents for reducing the force-to-crush (FTC) of high support flexible foams
ATE352373T1 (de) * 2003-05-22 2007-02-15 Dow Global Technologies Inc Nanoskalige dmc-katalysatorpartikel
US6884826B2 (en) * 2003-06-09 2005-04-26 Bayer Antwerp, N.V. Process for preparing double metal cyanide catalyzed polyols

Also Published As

Publication number Publication date
EP1797129B1 (de) 2008-07-23
WO2006034800A1 (de) 2006-04-06
KR20070104329A (ko) 2007-10-25
JP2008514742A (ja) 2008-05-08
DE502005004835D1 (de) 2008-09-04
CN101031599A (zh) 2007-09-05
CN101031599B (zh) 2011-01-19
ES2308542T3 (es) 2008-12-01
EP1797129A1 (de) 2007-06-20
DE102004047524A1 (de) 2006-03-30
US8362099B2 (en) 2013-01-29
ATE402203T1 (de) 2008-08-15
US20070219282A1 (en) 2007-09-20

Similar Documents

Publication Publication Date Title
MX2007002696A (es) Metodo para producir materiales de espuma suave de poliuretano.
ATE402209T1 (de) Verfahren zur herstellung von polyurethan- weichschaumstoffen
CN103819645B (zh) 一种慢回弹聚氨酯泡沫材料及其制备方法
MX2007003035A (es) Proceso para producir espumas rigidas de poliuretano.
CA2929472C (en) Mixtures of polyether carbonate polyols and polyether polyols for producing polyurethane soft foams
ATE514726T1 (de) Verfahren zur herstellung von polyurethan- weichschaumstoffen
MX2012003510A (es) Espumas de poliuretano con bajo contenido de monomero.
WO2002050173A3 (en) Blowing agent composition and polymeric foam containing a normally-liquid hydrofluorocarbon and carbon dioxide
MX339744B (es) Espumas de poliuretano flexibles, viscoelasticas, lavables.
MX2013002645A (es) Proceso para fabricar una espuma viscoelastica de poliuretano de mdi con baja solidificacion por compresion y alto flujo de aire.
MX338963B (es) Uso de oxido de (poli) butileno para mejorar la durabilidad de espumas de mdi-poliuretano.
MXPA03000245A (es) Compuestos elastomericos rellenos de silice.
CA2475205A1 (en) Formulated resin component for use in a spray-in-place foam system to produce a low density polyurethane foam
PL1960452T3 (pl) Sposób wytwarzania lepkosprężystych poliuretanowych miękkich tworzyw piankowych
BRPI0406962B1 (pt) polímero de poliuretano hidrofílico, composição de pré-polímero terminado em isocianato e processo para produzir uma espuma/gel de poliuretano
MX2019010076A (es) Espuma de elastomero de poliuretano de baja densidad con alto rebote de pelota.
WO2002074825A3 (en) Improved imr having synergistic effect with stabilizing system additives and catalyst package
WO2000073362A3 (en) Process for making low density foams, polyol composition and reaction system useful therefor
TW200602428A (en) Polyurethane composition and molded article thereof
ATE373032T1 (de) Quellbeständige polyurethanintegralschaumstoffe
CA2370340A1 (en) Preparation of low-density hydrophilic flexible polyurethane foams
CA2443130A1 (en) Energy absorbing flexible foams produced in part with a double metal cyanide catalyzed polyol
MY110837A (en) Process for making flexible foams
WO2007117295A3 (en) Base-catalyzed alkoxylation in the presence of non-linear polyoxyethylene-containing compounds
NZ331944A (en) A polyol mixture of an aromatic amine-starter polyether, a sucrose-started polyether and a propylene glycol-started polyether is used for producing hydrocarbon-blown hard polyurethane foams

Legal Events

Date Code Title Description
FG Grant or registration