[go: up one dir, main page]

FR2404650A1 - Procede de preparation d'elastomeres thermoplastiques a base de polyether-polyurethanes - Google Patents

Procede de preparation d'elastomeres thermoplastiques a base de polyether-polyurethanes

Info

Publication number
FR2404650A1
FR2404650A1 FR7827743A FR7827743A FR2404650A1 FR 2404650 A1 FR2404650 A1 FR 2404650A1 FR 7827743 A FR7827743 A FR 7827743A FR 7827743 A FR7827743 A FR 7827743A FR 2404650 A1 FR2404650 A1 FR 2404650A1
Authority
FR
France
Prior art keywords
polyurethanes
polyether
thermoplastic elastomers
elastomer
elastomers
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.)
Granted
Application number
FR7827743A
Other languages
English (en)
Other versions
FR2404650B1 (fr
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of FR2404650A1 publication Critical patent/FR2404650A1/fr
Application granted granted Critical
Publication of FR2404650B1 publication Critical patent/FR2404650B1/fr
Granted 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
    • 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
    • C08G18/08—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
    • 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
    • C08G2110/0066—≥ 150kg/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
    • C08G2120/00—Compositions for reaction injection moulding processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S521/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S521/914—Polyurethane cellular product formed from a polyol which has been derived from at least two 1,2 epoxides as reactants

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)

Abstract

L'invention a pour objet des élastomères thermoplastiques en polyéther-polyuréthanes. On fait réagir a. un quasi-prépolymère de polyuréthane liquide d'un type nouveau contenant environ 16 à 25 % de NCO libre; b. un poly(oxypropylène-oxyéthylène)-diol réactif; et c. un agent l'allongement qui est un diol à chaîne courte, en présence de d. un catalyseur. Les élastomères peuvent être solides ou microcellulaires et conviennent pour le procédé de réaction-moulage par injection RIM ou un procédé de coulée classique. Production de panneaux de caisses d'automobiles, d'engrenages, de joints et de dispositifs analogues, avec possibilité de réutiliser les excès d'élastomère (déchets) par suite du caractère thermo-plastique de l'élastomère.
FR7827743A 1977-09-29 1978-09-28 Procede de preparation d'elastomeres thermoplastiques a base de polyether-polyurethanes Granted FR2404650A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/838,017 US4190711A (en) 1977-09-29 1977-09-29 Thermoplastic polyether polyurethane elastomers

Publications (2)

Publication Number Publication Date
FR2404650A1 true FR2404650A1 (fr) 1979-04-27
FR2404650B1 FR2404650B1 (fr) 1985-03-22

Family

ID=25276056

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7827743A Granted FR2404650A1 (fr) 1977-09-29 1978-09-28 Procede de preparation d'elastomeres thermoplastiques a base de polyether-polyurethanes

Country Status (15)

Country Link
US (1) US4190711A (fr)
JP (2) JPS5919579B2 (fr)
AR (1) AR222806A1 (fr)
AU (1) AU525182B2 (fr)
BE (1) BE870842A (fr)
BR (1) BR7806422A (fr)
CA (1) CA1131389A (fr)
DE (2) DE2842304C2 (fr)
ES (1) ES473751A1 (fr)
FR (1) FR2404650A1 (fr)
GB (1) GB2005284B (fr)
IT (1) IT1099651B (fr)
MX (1) MX150389A (fr)
NL (1) NL7809844A (fr)
SE (1) SE440909B (fr)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916485A1 (de) * 1979-04-24 1980-11-06 Bayer Ag Verfahren zur herstellung von elastischen formkoerpern
US4341875A (en) * 1979-12-05 1982-07-27 Olin Corporation High flexural modulus reaction injection molded urethanes
US4297444A (en) * 1980-02-11 1981-10-27 Texaco Development Corp. Process for rim elastomers with superior high temperature dimensional stability
US4294951A (en) * 1980-07-14 1981-10-13 Mitsui-Nisso Corporation Rapid curing polyurethane elastomer prepared from a diphenylmethanediisocyanate based liquid prepolymer and a curing agent containing a polytetramethylene ether glycol, a diol and an organometallic catalyst
EP0044481B2 (fr) * 1980-07-21 1987-03-11 Mobay Chemical Corporation Procédé pour la préparation d'objets moulés souples
US4301110A (en) * 1980-08-25 1981-11-17 Texaco Inc. Rim elastomers with improved heat distortion and tear properties
US4444703A (en) * 1980-09-10 1984-04-24 Texaco Inc. Reinforced reaction injection molded elastomers
JPS57119915A (en) * 1981-01-16 1982-07-26 Bridgestone Corp Preparation of urethane modified isocyanurate foam
JPS57209920A (en) * 1981-06-18 1982-12-23 Sanyo Chem Ind Ltd Production of polyurethane
US4383099A (en) * 1981-07-27 1983-05-10 E M I Limited Encapsulant material suitable for use under conditions of prolonged vacuum
US4362823A (en) * 1981-08-21 1982-12-07 Manville Service Corporation Method and composition for closed cell foam formation
US4564491A (en) * 1982-03-01 1986-01-14 General Motors Corporation Preparing glass flake reinforced reaction injection molded polymers
JPS5980420A (ja) * 1982-10-29 1984-05-09 Toyota Motor Corp ポリウレタンの製造法
DE3241450A1 (de) * 1982-11-10 1984-05-10 Basf Ag, 6700 Ludwigshafen Fluessige urethangruppen enthaltende polyisocyanatmischungen auf diphenylmethan-diisocyanat-basis, verfahren zu deren herstellung und deren verwendung zur herstellung von polyurethan-weichschaumstoffen
US4826417A (en) * 1983-06-17 1989-05-02 Sheller Globe Corporation Apparatus for making molded window gasket assembly
US4755339A (en) * 1983-06-17 1988-07-05 Sheller-Globe Corporation Method and apparatus for making molded window gasket
US4761916A (en) * 1983-12-12 1988-08-09 Sheller Globe Corporation Molded urethane window gasket assembly with hinge member and apparatus and method for making same
AU4119885A (en) * 1984-03-29 1985-11-01 Hostettler, F. Preparation of microcellular polyurethane elastomers
US4525490A (en) * 1984-07-02 1985-06-25 Thermocell Development, Ltd. High tear strength flexible urethane foam composition and method of preparation
US4550153A (en) * 1984-10-26 1985-10-29 Basf Wyandotte Corporation Elastomer based on crude diphenylmethane diisocyanate and aniline in the RIM process
JPH0629313B2 (ja) * 1984-12-07 1994-04-20 武田薬品工業株式会社 難燃性軟質ウレタンフォームの製造法
US4686242A (en) * 1985-03-25 1987-08-11 The Dow Chemical Company Polyurea polymers prepared from urea containing prepolymers
US4738993A (en) * 1985-10-22 1988-04-19 Basf Corporation Rim microcellular polyurethane elastomer employing heteric or internal block ethylene oxide polyols
US4715989A (en) * 1986-01-22 1987-12-29 The B.F. Goodrich Company Coating for EMI shielding
JPH0684416B2 (ja) * 1987-01-22 1994-10-26 ダイセル化学工業株式会社 湿気硬化型ウレタンプレポリマ−
JPH01133226U (fr) * 1988-02-26 1989-09-11
JPH02296815A (ja) * 1989-05-11 1990-12-07 Sumitomo Bayer Urethane Kk インテグラルスキンポリウレタン成形品の製造
US5268183A (en) * 1990-05-04 1993-12-07 Vidrio Plano De Mexico, S.A. Mold apparatus having an outwardly angled seal for encapsulating a glass sheet
IT1246770B (it) * 1990-12-24 1994-11-26 Milanese Chim Organica Ind Procedimento di stampaggio di manufatti di poliuretano elastomerico microcellulare e poliuretani elastomerici microcellulari per tale procedimento.
GB9216631D0 (en) * 1992-08-05 1992-09-16 Ici Plc Reaction system for preparing microcellular elastomers
US5565498A (en) * 1993-02-02 1996-10-15 Imperial Chemical Industries Plc Process for making flexible foams
US7494427B2 (en) * 2001-11-05 2009-02-24 Callaway Golf Company Multi-layer golf ball
US6855073B1 (en) * 1998-03-18 2005-02-15 Callaway Golf Company Golf ball which includes fast-chemical-reaction-produced component and method of making same
US6210293B1 (en) 1993-06-01 2001-04-03 Spalding Sports Worldwide, Inc. Multi-layer golf ball
US6506130B2 (en) 1993-06-01 2003-01-14 Spalding Sports Worldwide, Inc. Multi layer golf ball
US6824476B2 (en) 1993-06-01 2004-11-30 Callaway Golf Company Multi-layer golf ball
US6290614B1 (en) * 1998-03-18 2001-09-18 Spalding Sports Worldwide, Inc. Golf ball which includes fast-chemical-reaction-produced component and method of making same
US6548618B2 (en) * 1993-06-01 2003-04-15 Spalding Sports Worldwide, Inc. Golf ball having dual core and thin polyurethane cover formed by RIM
US6695718B2 (en) 1993-06-01 2004-02-24 The Top-Flite Golf Company Golf ball with sulfur cured inner core component
US6287217B1 (en) 1993-06-01 2001-09-11 Spalding Sports Worldwide, Inc. Multi-layer golf ball
US6648777B2 (en) * 1993-06-01 2003-11-18 Callaway Golf Company Multi-layer golf ball
US6663508B1 (en) 1993-06-01 2003-12-16 Callaway Golf Company Multi-layer golf ball with reaction injection molded polyurethane component
US6638185B2 (en) 1993-06-01 2003-10-28 The Top-Flite Golf Company Multi-layer golf ball
US5409654A (en) * 1993-08-05 1995-04-25 Nibco Inc. Method of reaction injection molding a valve
DE4339475A1 (de) * 1993-11-19 1995-05-24 Wolff Walsrode Ag Knisterfreie, antistatische Polyurethanfolie mit hoher Atmungsaktivität sowie ihre Verwendung
DE4401432C1 (de) * 1994-01-19 1995-06-22 Berstorff Gmbh Masch Hermann Verfahren und Vorrichtung zum Herstellen eines TPE-Schaumprofiles für die Bau- und Kfz.-Industrie
US5665288A (en) * 1994-12-29 1997-09-09 Basf Corporation Method of making water-blown polyurethane sealing devices
US5510053A (en) * 1994-12-29 1996-04-23 Basf Corporation Water-blown polyurethane sealing devices and compositions for producing same
DE19625987A1 (de) * 1996-06-28 1998-01-02 Bayer Ag Verfahren zur kontinuierlichen Herstellung von thermoplastisch verarbeitbaren Polyurethanen mit verbessertem Verarbeitungsverhalten
US7160210B2 (en) * 1998-03-18 2007-01-09 Callaway Golf Company Golf ball which includes fast-chemical-reaction-produced component and method of making same
US7320648B2 (en) * 1998-03-18 2008-01-22 Callaway Golf Company Golf ball
US20030176619A1 (en) * 1998-03-18 2003-09-18 Viktor Keller Polyurethane covered golf balls
US20050049082A1 (en) * 1998-03-18 2005-03-03 Callaway Golf Company Golf ball
US6533566B2 (en) 1998-03-18 2003-03-18 Spalding Sports Worldwide, Inc. Apparatus for making a golf ball
US6716954B2 (en) 1998-03-18 2004-04-06 Callaway Golf Company Golf ball formed from a polyisocyanate copolymer and method of making same
US20050282659A1 (en) * 1998-03-18 2005-12-22 Kennedy Thomas J Iii High compression multi-layer RIM golf balls
GB2390329A (en) * 1998-03-18 2004-01-07 Spalding Sports Worldwide Inc Apparatus and method for making a golf ball
US7244196B2 (en) * 1998-03-18 2007-07-17 Callaway Golf Company Golf ball which includes fast-chemical-reaction-produced component and method of making same
DE19826398A1 (de) * 1998-06-12 1999-12-16 Basf Ag Verfahren zur Herstellung von Polyurethan-Elastomern
US6352667B1 (en) 1999-08-24 2002-03-05 Absorbable Polymer Technologies, Inc. Method of making biodegradable polymeric implants
US7427193B2 (en) * 2001-12-04 2008-09-23 Callaway Golf Company Method and apparatus for forming a golf ball
US6855077B2 (en) * 2001-12-04 2005-02-15 Callaway Golf Company Process and apparatus for producing a golf ball with deep dimples
US20060038321A1 (en) * 2001-12-04 2006-02-23 Callaway Golf Company Method and apparatus for forming deep apertures in a golf ball, and golf ball
US6984709B2 (en) * 2002-12-20 2006-01-10 Noveon Ip Holdings Corp. Organometallic-free polyurethanes having low extractables
US7591740B2 (en) * 2005-01-26 2009-09-22 Callaway Golf Company Golf ball which includes fast-chemical-reaction-produced component and method of making same
US8177665B2 (en) * 2005-02-01 2012-05-15 Taylor Made Golf Company, Inc. Multi-layer golf ball
US7264560B2 (en) * 2005-03-10 2007-09-04 Callaway Golf Company Golf ball
US20070035063A1 (en) * 2005-08-10 2007-02-15 Lavallee Gerald A Two-stage reaction injection molded golf ball
US7524251B2 (en) * 2005-08-30 2009-04-28 Callaway Golf Company Golf products produced by a stoichiometrically imbalanced RIM system
US20070069424A1 (en) * 2005-08-30 2007-03-29 Veilleux Thomas A Reaction injection molding assembly for manufacturing a golf ball component
US7306529B2 (en) * 2005-10-07 2007-12-11 Callaway Golf Company Multi-layer golf ball
US20070135235A1 (en) * 2005-10-13 2007-06-14 Kennedy Thomas J Iii Fast-Chemical-Reaction-Produced Golf Product Comprising a Caprolactam Polyol
JP7286912B2 (ja) * 2016-12-15 2023-06-06 東ソー株式会社 アロファネート基含有ポリイソシアネートプレポリマー

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876077A (en) * 1955-05-17 1959-03-03 Olin Mathieson Process for the production of stabilized liquid ozone
US3575896A (en) * 1968-08-16 1971-04-20 Davidson Rubber Co Microcellular foams having a low glass transition temperature
BE759829A (fr) * 1969-12-03 1971-06-03 Upjohn Co Preparation de polyurethanes
DE2002064C2 (de) * 1970-01-17 1983-09-01 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von flammwidrigen elastischen oder halbelastischen Schaumstoffen
BE791310A (fr) * 1971-11-13 1973-05-14 Bayer Ag Procede de preparation de pieces moulees en mousse
GB1355227A (en) * 1971-12-10 1974-06-05 Shell Int Research Mixtures for the preparation of polyurethane foams
US3821130A (en) * 1972-04-26 1974-06-28 Dow Chemical Co Air frothed polyurethane foams
US3823201A (en) * 1972-12-04 1974-07-09 Basf Wyandotte Corp Highly-stable graft copolymer dispersions in polyols containing unsaturation and polyurethanes prepared therefrom
JPS533438B2 (fr) * 1973-05-02 1978-02-06
GB1448933A (en) * 1974-02-14 1976-09-08 Shell Int Research Process for preparing polyurethane products
DE2418075A1 (de) 1974-04-13 1975-10-30 Bayer Ag Thermoplastische polyurethan-elastomere mit verbesserter verarbeitbarkeit
JPS55411B2 (fr) * 1974-04-26 1980-01-08
US3892691A (en) * 1974-07-10 1975-07-01 Goodyear Tire & Rubber Polyurethane structural member
JPS5331513B2 (fr) * 1974-07-18 1978-09-02
US4202957A (en) * 1974-09-09 1980-05-13 The Upjohn Company Thermoplastic polyurethane elastomers from polyoxypropylene polyoxyethylene block copolymers
JPS5140117A (fr) * 1974-09-30 1976-04-03 Roland Corp
JPS5162899A (fr) * 1974-11-28 1976-05-31 Toyo Rubber Chemical Ind Co
US3983094A (en) * 1975-09-11 1976-09-28 Uniroyal, Inc. Thermally stable polyurethane elastomers produced from poly(oxypropylene)-poly(oxyethylene)glycols of high oxyethylene group content
US4048105A (en) * 1975-12-19 1977-09-13 Mccord Corporation High density urethane foam for rim
US4049636A (en) * 1976-02-25 1977-09-20 Uniroyal, Inc. Thermally stable polyurethane elastomer useful in molding flexible automobile exterior body parts

Also Published As

Publication number Publication date
SE7810208L (sv) 1979-03-30
IT1099651B (it) 1985-09-28
US4190711A (en) 1980-02-26
NL7809844A (nl) 1979-04-02
SE440909B (sv) 1985-08-26
JPS6240363B2 (fr) 1987-08-27
JPS5919579B2 (ja) 1984-05-07
BE870842A (fr) 1979-03-28
DE2857497C2 (de) 1983-11-03
DE2842304A1 (de) 1979-04-05
DE2842304C2 (de) 1982-09-16
AR222806A1 (es) 1981-06-30
GB2005284A (en) 1979-04-19
ES473751A1 (es) 1979-04-01
FR2404650B1 (fr) 1985-03-22
AU525182B2 (en) 1982-10-21
MX150389A (es) 1984-04-30
CA1131389A (fr) 1982-09-07
GB2005284B (en) 1982-02-24
IT7828201A0 (it) 1978-09-28
JPS5457598A (en) 1979-05-09
JPS5998119A (ja) 1984-06-06
BR7806422A (pt) 1979-04-24
AU4021978A (en) 1980-04-03

Similar Documents

Publication Publication Date Title
FR2404650A1 (fr) Procede de preparation d'elastomeres thermoplastiques a base de polyether-polyurethanes
FR2371471A1 (fr) Procede de preparation de polyurethanes cellulaires elastomeres, utilisables en particulier comme absorbeurs d'energie et produits en resultant
BE844525A (fr) Perfectionnements apportes a la catalyse de reactions d'isocyanates organiques
FR2488897B1 (fr) Procede de preparation d'un elastomere de polyurethane par moulage par injection avec reaction et article faconne obtenu par ce procede
DE2961959D1 (en) Fluid, stable interpolymer/polyol compositions, process for the production thereof and processes for the production of elastomeric polyurethanes and polyurethane foams therefrom
GB1513225A (en) Treatment of polyurea microcapsules
SE7602789L (sv) Deck - hjulaggregat med inre fyllning av fjedrande material samt sett for genomforande av fyllningen
ES448498A1 (es) Procedimiento para la obtencion de materiales espumados de poliuretano.
FR2355040A1 (fr) Initiateurs pour des reactions avec des isocyanates
IT1061039B (it) Procedimento per la gassificazione continua di sostanze solide e.o liquide contenenti carbonio e.o idrocarburi in reattore a bagno di ferro e dispositivo per la sua realizzazione
FR2281240A1 (fr) Ensemble forme d'un pneumatique et d'une roue, contenant une piece inseree de securite agissant comme support de charge lors du degonflement du pneumatique
FR2366353A1 (fr) Procede pour eliminer des composes chimiques de l'arsenic et de l'antimoine
FR2425454A1 (fr) Procede de fabrication de matieres alveolaires en polyuree
GB1494170A (en) Process for degrading polyurethane waste into activated polyhydroxyl compounds
FR2362161A1 (fr) Pieces ou corps moules a base d'hydrate de cellulose modifie par des polymeres synthetiques a base d'oxyde d'alcoylene et un procede pour la fabrication de ces articles
FR2384803A1 (fr) Polyurethanne expanse contenant un detergent et une charge
KR870004732A (ko) 폴리우레탄 제조용 촉매와 그 제조방법
ES8406085A1 (es) Un elastomero moldeado por inyeccion.
GB1410241A (en) Curing of polyurethane prepolymers
PT67055A (fr) Reacteur convenant pour les reactions chimiques faisant intervenir des fluides au contact d'un lit de matieres solides
ATE26117T1 (de) Herstellung von siloxylierten metallhaltigen katalysatoren fuer die herstellung von urethanschaumstoffen und elastomeren.
FR2387953A1 (fr) Procede de preparation de 2-pyrrolidones substituees en position n
FR2366320A1 (fr) Procede de preparation de mousses polyurethanne permeables au fluide contenant des petites quantites d'amines aromatiques pouvant exsuder
FR2437140A1 (fr) Procede pour la neutralisation de l'electricite statique avec des atmospheres mixtes
FR2450880A1 (fr) Couvercle pour cellules electrolytiques destinees, notamment, a la production de chlore

Legal Events

Date Code Title Description
ST Notification of lapse