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WO1992016573A1 - Procede de production de mousses de polyurethanne rigides non halogenees contenant des groupes urethannes, surtout des groupes isocyanurates, et leur utilisation comme materiaux isolants - Google Patents

Procede de production de mousses de polyurethanne rigides non halogenees contenant des groupes urethannes, surtout des groupes isocyanurates, et leur utilisation comme materiaux isolants Download PDF

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Publication number
WO1992016573A1
WO1992016573A1 PCT/EP1992/000524 EP9200524W WO9216573A1 WO 1992016573 A1 WO1992016573 A1 WO 1992016573A1 EP 9200524 W EP9200524 W EP 9200524W WO 9216573 A1 WO9216573 A1 WO 9216573A1
Authority
WO
WIPO (PCT)
Prior art keywords
compounds
halogen
pbw
groups
phosphorus
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.)
Ceased
Application number
PCT/EP1992/000524
Other languages
German (de)
English (en)
Inventor
Rolf Wiedermann
Gerhard Heilig
Martin Hoppe
Stephan Wendel
Wolfgang Schmitz
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of WO1992016573A1 publication Critical patent/WO1992016573A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
    • 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
    • C08G18/09—Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
    • C08G18/092—Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture oligomerisation to isocyanurate groups
    • 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
    • C08J9/0014—Use of organic additives
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • 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
    • C08G2110/0025—Foam properties rigid
    • 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
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0058—≥50 and <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
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Definitions

  • the present invention relates to halogen-free, flame-retardant rigid foams which have urethane and predominantly isocyanurate groups.
  • halogen-containing compounds are used in the production of rigid polyurethane foams. This is e.g. fluorochlorohydrocarbons, which serve as blowing agents for the formation of cellular structures. Furthermore, halogen-containing chemical compounds are often used to increase the flame resistance of the rigid foams.
  • raw densities of not less than 40 kg / m 3 are common with such rigid foams, since otherwise there is a risk of shrinkage or shrinkage.
  • the foams show poor aging behavior of the thermal insulation properties, caused by the rapid diffusion of carbon dioxide from the cells, as well as the slow diffusion of air into the cells. With such foams, good long-term insulation is only possible if diffusion-tight cover layers are processed.
  • Halogen-free rigid foams are also described in EP-A 0 394 769.
  • Pentane is used as the halogen-free but flammable hydrocarbon for the blowing reaction. Therefore, considerable efforts had to be made to ensure the flame retardancy required for building materials.
  • This EP-A uses dimethyl methane phosphonate (DMMP), against which toxicological concerns have been raised, and its use should therefore be avoided. Flame retardants which are solid at room temperature are also used, but their processing poses technical problems.
  • DMMP dimethyl methane phosphonate
  • PIR foams often have the technical disadvantage that they generally require higher processing temperatures than PUR foams in order to ensure adequate adhesion to the cover layers used.
  • Flame retardants also around solid at room temperature Substances act when they can be brought into an easily processable form by the solution in the isocyanate.
  • the solution in the isocyanate is preferable to that in the polyol, since the latter can lead to precipitation and crystal formation due to the lower solubility product.
  • the invention relates to a process for the production of urethane and predominantly isocyanurate halogen-free rigid foams by reacting a) polyisocyanates with b) compounds with at least two isocyanate-active hydrogen atoms with a molecular weight of 400 to 10,000 and c) optionally compounds with at least two isocyanate-reactive hydrogen atoms and with a molecular weight of 32-399, in the presence of d) trimerization catalysts and e) water and / or hydrocarbons as blowing agents and f) phosphorus-containing flame retardants, if appropriate in the presence of g) further blowing agents and other auxiliaries and additives known per se with a code number of 80 to 400, preferably 100 to 300, characterized in that all the compounds used, in particular the flame retardants and blowing agents are halogen-free.
  • pentane, isopentane, cyclopentane or mixtures thereof are used as hydrocarbon blowing agents, the phosphorus-containing flame retardants are liquid at room temperature,
  • Diphenyl cresyl phosphate or triethyl phosphate or mixtures thereof can be used
  • the invention also relates to the use of the halogen-free rigid foams containing urethane and predominantly isocyanurate groups as insulating materials.
  • the production of foams containing urethane and predominantly isocyanurate groups is known per se and e.g. in DE-PS 11 12 285, GB-PS 11 04 394, DE-OS 15 95 844 and 17 69 023 as well as in the plastics manual volume VII, Polyurethane, published by Viewe ⁇ and Höchtlen, Carl Hanser Verlag Kunststoff 1966 and in the new edition of this book, edited by G.Oertel, Carl Hanser Verlag Kunststoff, Vienna 1983.
  • aliphatic, cycloaliphatic, araliphatic, aromatic and heterocyclic polyisocyanates as described, for example, by W. Siefken in Justus Liebigs Annalen der Chemie, 562, pages 75 to 136, for example those of the formula
  • Q (NCO) n n 2-4, preferably 2-3, and Q is an aliphatic hydrocarbon radical with 2-18, preferably 6-C atoms, a cycloaliphatic hydrocarbon radical with 4-15, preferably 5-10 C atoms, are an aromatic hydrocarbon radical with 6-15, preferably 6-13 C atoms or an aromatic hydrocarbon radical with 8-15, preferably 8-13 C atoms, for example those polyisocyanates as described in DE-OS
  • polyisocyanates for example the 2,4- and 2,6-tolylene diisocyanate, and any mixtures of these isomers (“TDI”) are generally particularly preferred; Polyphenylpolymethylene polyisocyanates, such as those produced by aniline-formaldehyde condensation and subsequent phosgenation ("crude MDI”) and carbodimide groups, urethane groups, Al lophanate groups, isocyanurate groups, urea groups or biuret groups-containing polyisocyanates (“modified polyisocyanates”), in particular those modified Polyisocyanates derived from 2,4-and / or 2,6-tolylene diisocyanate or from 4,4'-and / or 2,4'-diphenylmethane diisocyanate.
  • TDI 2,4- and 2,6-tolylene diisocyanate, and any mixtures of these isomers
  • Starting components are also compounds having at least two isocyanate-reactive hydrogen atoms with a molecular weight of generally 400-10,000.
  • thio groups or compounds having carboxyl groups this is understood to mean compounds having hydroxyl groups, in particular 2 to 8 hydroxyl groups
  • These compounds generally have 2 to 8, preferably 2 to 4, compared to isocyanates
  • Halogen-free flame retardants such as triphenyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, or mixtures thereof, red phosphorus are used.
  • auxiliaries and additives are used as blowing agents.
  • - Additional catalysts of the type known per se in amounts of up to 10% by weight, based on the amounts of component b).
  • Surface-active additives such as emulsifiers and foam stabilizers.
  • Reaction retarders for example acidic substances such as hydrochloric acid or organic acid halides, also cell regulators of the type known per se, such as paraffins or fatty alcohols or dimethylpolysiloxanes, as well as pigments or dyes, furthermore stabilizers against
  • Additives are, for example, in DE-OS
  • reaction components are according to the known one-step process, the prepolymer process or brought the semiprepolymer process to implementation, often using machine facilities, such as those described in US Pat. No. 2,764,565. Details on processing devices that are also possible according to the invention are described in the plastics manual, volume VII, edited by Vieweg and Hochtlen, Carl-Hanser-Verlag, Kunststoff 1966, for example on pages 121 to 205.
  • foams can also be produced by block foaming or according to the known method
  • Double conveyor belt processes are manufactured.
  • the products obtainable according to the invention are used, for example, as insulation boards for roof insulation, sheet steel composite elements or block foam material.
  • Polyol component A 100 parts by weight of CGT) of a polyol mixture of OH number 265 with a viscosity of 3100 mPa.s at 20 ° C, consisting of:
  • a polyol mixture of OH number 185 with a viscosity of 1900 mPa.S at 25 ° C consisting of: 1. 50 pbw of a polyester of OH number 370 based on phthalic anhydride, adipic acid, oleic acid and
  • the polyol components A and B represent typical mixtures that are used for the production of insulation boards and composite elements on double conveyor belt systems.
  • the formulations C and D represent typical ones
  • Foaming according to the examples given in the tables was carried out in a manner known per se by the one-shot method using the recipes given.
  • GT 100 parts by weight
  • isocyanate components were prepared by heating a commercial isocyanate to 50 ° C to 70 ° C, adding the appropriate amount of flame retardant and cooling the mixture:
  • triphenyl phosphate 10 pbw of triphenyl phosphate are dissolved in 100 pbw of polyisocyanate ( ® Desmodur 44P75; Bayer AG, Leverkusen).
  • triphenyl phosphate 10 pbw of triphenyl phosphate are dissolved in 100 pbw of polyisocyanate ( ® Desmodur VP.PU 1194J Bayer AG, Leverkusen).
  • triphenyl phosphate 30 pbw of triphenyl phosphate are dissolved in 100 pbw of polyisocyanate ( ® Desmodur VP.PU 1194. Bayer AG, Leverkusen).
  • the isocyanate components produced in this way had the following properties:
  • the isocyanate components according to the invention have considerably lower viscosities.
  • the addition of triphenyl phosphate to the PU 1194 allows it to be processed on high-pressure systems for the first time.
  • Polyol and isocyanate components as well as the commercially available isocyanates represent typical products such as those used for the production of rigid foam insulation boards or composite elements on double conveyor belt systems or for the production of block foams.
  • Table 5 Halogen-free, pentane-driven B2 rigid foams, index numbers approx. 130 and 150.
  • Table 6 Halogen-free, water- (CO 2 ) -driven B2 rigid foams, index approx. 250.
  • Table 7 Halogen-free, pentane-propelled B2 rigid foams, index approx. 250.
  • Table 8 Halogen-free, pentane-propelled B2 rigid foams, index approx. 300.

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

Abstract

On produit des mousses de polyuréthanne rigides non halogénées contenant des groupes uréthannes, surtout des groupes isocyanurates, par réaction de a) polyisocyanates avec b) des composés ayant au moins deux atomes d'hydrogène actifs par rapport aux isocyanates et un poids moléculaire compris entre 400 et 10.000; et le cas échéant avec c) des composés ayant au moins deux atomes d'hydrogène réactifs avec les isocyanates et un poids moléculaire compris entre 32 et 399, en présence de d) catalyseurs de trimérisation et de e) eau et/ou hydrocarbures en tant qu'agents moussants; et f) des agents ignifuges phosphorés, le cas échéant en présence de g) autres agents moussants et autres additifs et adjuvants connus en soi. Ces mousses ont un nombre caractéristique compris entre 80 et 400, de préférence entre 100 et 300, alors que tous les composés chimiques utilisés pour la fabriquer, notamment les agents ignifuges et moussants, sont exempts d'halogènes. On utilise ces mousses comme matériaux isolants.
PCT/EP1992/000524 1991-03-20 1992-03-10 Procede de production de mousses de polyurethanne rigides non halogenees contenant des groupes urethannes, surtout des groupes isocyanurates, et leur utilisation comme materiaux isolants Ceased WO1992016573A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109076A DE4109076A1 (de) 1991-03-20 1991-03-20 Verfahren zur herstellung von urethan- und ueberwiegend isocyanuratgruppen aufweisenden hartschaumstoffen und ihre verwendung als daemmaterialien
DEP4109076.4 1991-03-20

Publications (1)

Publication Number Publication Date
WO1992016573A1 true WO1992016573A1 (fr) 1992-10-01

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Country Status (3)

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DE (1) DE4109076A1 (fr)
WO (1) WO1992016573A1 (fr)
ZA (1) ZA922003B (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994001479A1 (fr) * 1992-07-09 1994-01-20 Bayer Aktiengesellschaft Procede de production de mousses dures contenant des groupes urethannes et surtout des groupes isocyanurates
WO1994018268A1 (fr) * 1993-02-10 1994-08-18 Rathor Ag Composition prepolymere pour mousses isolantes
EP0608754A3 (en) * 1993-01-29 1994-09-21 Bayer Ag Process for the preparation of rigid foams showing urethane and isocyanurate groups and their use as insulating materials.
EP0610752A3 (fr) * 1993-02-10 1994-12-07 Bayer Ag Procédé pour la préparation de mousses à partir d'isocyanate.
EP0635527A1 (fr) * 1993-07-22 1995-01-25 Nisshinbo Industries, Inc. Procédé de production de mousses de polyisocyanurate
EP0617068A3 (fr) * 1993-03-25 1995-03-01 Bayer Ag Mélanges de polyisocyanates et pentane et/ou cyclopentane, un procédé pour la préparation de mousses rigides contenant des groupes d'uréthane et éventuellement disocyanurate et leur utilisation comme matériaux calorifuges.
WO1995014730A1 (fr) * 1993-11-22 1995-06-01 Bayer Aktiengesellschaft Procede de production de mousses de polyurethane dures
US5428077A (en) * 1993-02-10 1995-06-27 Bayer Aktiengesellschaft Process for producing isocyanate-based foams
WO1995018175A1 (fr) * 1993-12-27 1995-07-06 The Dow Chemical Company Procede de preparation d'une mousse de polyurethane en presence d'un agent gonflant hydrocarbure
US5444101A (en) * 1993-04-23 1995-08-22 Imperial Chemical Industries Plc Process for rigid polyurethane foams
US5519065A (en) * 1994-03-11 1996-05-21 Imperial Chemical Industries Plc Process for rigid polyurethane foams
EP0770642A3 (fr) * 1995-10-27 1998-04-15 Basf Corporation Méthode de préparation de mousse de polyuréthane
US5837742A (en) * 1995-10-27 1998-11-17 Basf Corporation Method of making a polyurethane foam having improved flame retardance and aged k-factors
EP0905160A1 (fr) * 1997-09-24 1999-03-31 Basf Aktiengesellschaft Emulsions stables au stockage contenant des agents porogènes pour la préparation de mousses rigides à base d'isocyanate
WO1999061504A1 (fr) * 1998-05-21 1999-12-02 Huntsman Ici Chemicals Llc Mousses rigides de polyurethanne soufflees aux hydrocarbures presentant une capacite amelioree d'inflammabilite
CN104854156A (zh) * 2012-10-02 2015-08-19 拜尔材料科学有限公司 适用于屋顶绝热的聚氨酯和聚异氰脲酸酯硬质泡沫材料

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530035A (en) * 1994-06-15 1996-06-25 General Electric Company Method of preparing polyurethane foam of low thermal conductivity

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2147981A2 (fr) * 1971-07-02 1973-03-11 Bayer Ag
US4417001A (en) * 1982-09-20 1983-11-22 Freeman Chemical Corporation Low smoke isocyanurate modified urethane foam and method of making same
EP0151401A2 (fr) * 1984-01-24 1985-08-14 Bayer Ag Mousses de polyuréthane rigides résistant aux flammes ayant des pores fermés
EP0308733A1 (fr) * 1987-09-15 1989-03-29 Bayer Ag Procédé de préparation de mousses rigides de polyuréthane
EP0394769A1 (fr) * 1989-04-24 1990-10-31 Hans Wilhelm Hützen Mousse de polyuréthane sans hydrocarbure halogéné et son procédé de préparation
EP0463493A1 (fr) * 1990-06-26 1992-01-02 Bayer Ag Procédé de préparation de mousses rigides contenant des groupes d'uréthane et essentiellement d'isocyanurate et leur utilisation comme matériau isolant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2147981A2 (fr) * 1971-07-02 1973-03-11 Bayer Ag
US4417001A (en) * 1982-09-20 1983-11-22 Freeman Chemical Corporation Low smoke isocyanurate modified urethane foam and method of making same
EP0151401A2 (fr) * 1984-01-24 1985-08-14 Bayer Ag Mousses de polyuréthane rigides résistant aux flammes ayant des pores fermés
EP0308733A1 (fr) * 1987-09-15 1989-03-29 Bayer Ag Procédé de préparation de mousses rigides de polyuréthane
EP0394769A1 (fr) * 1989-04-24 1990-10-31 Hans Wilhelm Hützen Mousse de polyuréthane sans hydrocarbure halogéné et son procédé de préparation
EP0463493A1 (fr) * 1990-06-26 1992-01-02 Bayer Ag Procédé de préparation de mousses rigides contenant des groupes d'uréthane et essentiellement d'isocyanurate et leur utilisation comme matériau isolant

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994001479A1 (fr) * 1992-07-09 1994-01-20 Bayer Aktiengesellschaft Procede de production de mousses dures contenant des groupes urethannes et surtout des groupes isocyanurates
EP0608754A3 (en) * 1993-01-29 1994-09-21 Bayer Ag Process for the preparation of rigid foams showing urethane and isocyanurate groups and their use as insulating materials.
WO1994018268A1 (fr) * 1993-02-10 1994-08-18 Rathor Ag Composition prepolymere pour mousses isolantes
EP0610752A3 (fr) * 1993-02-10 1994-12-07 Bayer Ag Procédé pour la préparation de mousses à partir d'isocyanate.
US5428077A (en) * 1993-02-10 1995-06-27 Bayer Aktiengesellschaft Process for producing isocyanate-based foams
EP0617068A3 (fr) * 1993-03-25 1995-03-01 Bayer Ag Mélanges de polyisocyanates et pentane et/ou cyclopentane, un procédé pour la préparation de mousses rigides contenant des groupes d'uréthane et éventuellement disocyanurate et leur utilisation comme matériaux calorifuges.
US5444101A (en) * 1993-04-23 1995-08-22 Imperial Chemical Industries Plc Process for rigid polyurethane foams
EP0635527A1 (fr) * 1993-07-22 1995-01-25 Nisshinbo Industries, Inc. Procédé de production de mousses de polyisocyanurate
US5736588A (en) * 1993-11-22 1998-04-07 Bayer Aktiengesellschaft Process for preparing rigid polyurethane foams
WO1995014730A1 (fr) * 1993-11-22 1995-06-01 Bayer Aktiengesellschaft Procede de production de mousses de polyurethane dures
WO1995018175A1 (fr) * 1993-12-27 1995-07-06 The Dow Chemical Company Procede de preparation d'une mousse de polyurethane en presence d'un agent gonflant hydrocarbure
US5519065A (en) * 1994-03-11 1996-05-21 Imperial Chemical Industries Plc Process for rigid polyurethane foams
EP0770642A3 (fr) * 1995-10-27 1998-04-15 Basf Corporation Méthode de préparation de mousse de polyuréthane
US5837742A (en) * 1995-10-27 1998-11-17 Basf Corporation Method of making a polyurethane foam having improved flame retardance and aged k-factors
EP0905160A1 (fr) * 1997-09-24 1999-03-31 Basf Aktiengesellschaft Emulsions stables au stockage contenant des agents porogènes pour la préparation de mousses rigides à base d'isocyanate
US6274642B1 (en) 1997-09-24 2001-08-14 Basf Aktiengesellschaft Storage-stable, blowing agent-containing emulsions for producing rigid foams based on isocyanate
WO1999061504A1 (fr) * 1998-05-21 1999-12-02 Huntsman Ici Chemicals Llc Mousses rigides de polyurethanne soufflees aux hydrocarbures presentant une capacite amelioree d'inflammabilite
CN104854156A (zh) * 2012-10-02 2015-08-19 拜尔材料科学有限公司 适用于屋顶绝热的聚氨酯和聚异氰脲酸酯硬质泡沫材料
EP2904024A4 (fr) * 2012-10-02 2016-05-18 Covestro Llc Mousses rigides de polyurethane et de polyisocyanurate pour l'isolation de toiture
US9522973B2 (en) 2012-10-02 2016-12-20 Covestro Llc Polyurethane and polyisocyanurate rigid foams for roofing insulation
US10676582B2 (en) 2012-10-02 2020-06-09 Covestro Llc Polyurethane and polyisocyanurate rigid foams suitable for roofing insulation

Also Published As

Publication number Publication date
ZA922003B (en) 1992-11-25
DE4109076A1 (de) 1992-09-24

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