Invention relates to the use of foam stabilizers, produced on the basis of sustainable raw materials, for prroducing polyurethane foams

Preparation and use of polyurethane foams with the use of foam stabilizers of the general formula (I) ...

USE OF POLYSILOXANES COMPRISING BRANCHED POLYETHER MOIETIES FOR THE PRODUCTION OF POLYURETHANE FOAMS

The present invention relates to the use of polyethersiloxane compounds branched within the polyether moiety and preferably containing carbonate groups, as foam stabilizers in the production of polyurethane foams. 2. The process according to claim 1 , wherein Σi5+i6≧i+1.3. The process according to claim 1 , wherein Rcomprises at least one structural unit which arises through binding of the monomer unit M9 directly to a unit selected from M5 claim 1 , M6 claim 1 , M7 or M8.5. The composition according to claim 4 , further comprises a blowing agent.6. The composition according to claim 4 , further comprising an isocynate component.8. The composition of matter according to claim 7 , wherein said polyurethane foam is a flexible polyurethane foam.9. An article of manufacturing comprising the composition of matter of .10. The article of manufacturing according to claim 9 , wherein said article is selected from the group consisting of furniture claim 9 , refrigerator-insulation materials claim 9 , other means of insulation or insulation sheets claim 9 , packaging materials claim 9 , sandwich elements claim 9 , spray foams claim 9 , single- & 1.5-component canister foams claim 9 , wood-imitation products claim 9 , modelling foams claim 9 , packaging foams claim 9 , mattresses claim 9 , furniture cushioning claim 9 , automobile-seat cushioning claim 9 , headrests claim 9 , instrument panels claim 9 , automobile-interior cladding products claim 9 , automobile roof lining claim 9 , sound-deadening materials claim 9 , steering wheels claim 9 , shoe soles claim 9 , carpet-backing foams claim 9 , filter foams claim 9 , sealant foams claim 9 , sealants and adhesives. The present invention relates to the use of polyethersiloxane compounds which have branching in one or more polyether moieties and which preferably contain carbonate groups, as foam stabilizers in the production of polyurethane foams.Polyurethane foams (PU foams) are used in a wide variety of sectors because they have ...

COMPOSITION CONTAINING SPECIFIC AMIDES AND ORGANOMODIFIED SILOXANES, SUITABLE FOR PRODUCING POLYURETHANE FOAMS

Compositions suitable for producing polyurethane foams which include at least a polyol component, a catalyst catalysing the formation of a urethane or isocyanurate bond, optionally a blowing agent, optionally further additives and optionally an isocyanate component, which are characterized in that they additionally include an admixture including at least one specific amide and at least one siloxane compound, wherein the mass ratio of siloxane compounds to compounds of formula (I) is above 1:10. 4. The composition according to claim 1 , wherein the proportion of the at least one amide of formula (I) is in the range from 0.1 to 10 parts by mass claim 1 , based on 100 parts by mass of said polyol component.5. The composition according to claim 1 , wherein said at least one siloxane compound comprises at least one organic radical having at least two carbon atoms which is bonded to a silicon atom through a Si—C bond.6. The composition according to claim 1 , wherein the at least one siloxane compound comprises at least one compound of formula (IV){'br': None, 'sup': 1', '2', '3, 'sub': 3', '2', '3', '2', 'a', '3', 'b', '3', '2, 'R—Si(CH)—O—[—Si(CH)—O—]—[—Si(CH)R—O—]—Si(CH)—R\u2003\u2003(IV)'}where{'sup': 2', '4', '5, 'sub': 2', 'x', '2', 'y', '8', '22, 'Rin each occurrence is the same or different and is —(CH)—O—(CH—CHR—O)—Ror a Cto Calkyl radical,'}{'sup': 1', '3', '2', '1', '3', '2, 'sub': '3', 'Rand Rin each occurrence are the same or different and is —CHor R, provided at least one Ror Rradical is equal to R,'}a+b+2=10 to 150,b=0 to 25,x=3 to 10,y=1 to 30,{'sup': '4', 'sub': 3', '2', '3, 'Rin each occurrence is the same or different and is H, —CH, —CHCHor phenyl, and'}{'sup': '5', 'Rin each occurrence is the same or different and is H, alkyl or acyl.'}7. The composition according to claim 6 , wherein at least 50 mol % of the Rradicals are H.8. The composition according to claim 6 , wherein at least 5 mol % of the Rradicals are methyl.9. The composition according to ...

SILICONE STABILIZERS FOR FLAME-RETARDED RIGID POLYURETHANE OR POLYISOCYANURATE FOAMS

The invention relates to a process for producing rigid polyurethane or polyisocyanurate foams by reacting an isocyanate with a polyol in the presence of urethane and/or isocyanurate catalysts, water, optionally further blowing agents, optionally flame retardants and optionally further additives (e.g. fillers, emulsifiers, purely organic stabilizers and surfactants, viscosity reducers, dyes, antioxidants, UV stabilizers, antistatics) using foam stabilizers of the general formula (I) R—Si(CH 3 ) 2 —O—[—Si(CH 3 ) 2 —O—] n —[—Si(CH 3 )(R)—O—] m —Si(CH 3 ) 2 —R, where R=—(CH 2 ) x —O—(CH 2 —CHR′—O) y —R″.

SILICONE-POLYETHER BLOCK COPOLYMERS WITH HIGH MOLECULAR WEIGHT POLYETHER RESIDUES AND THEIR USE AS STABILIZERS FOR PRODUCTION OF POLYURETHANE FOAMS

Silicone-polyether block copolymer comprising a polyorganosiloxane which includes at least one polyether residue having a molecular weight of not less than 5000 g/mol, and wherein a weight average molecular weight of all polyether residues attached to the polyorganosiloxane by a chemical bond is above 3000 g/mol, its production and use and also compositions and polymeric articles obtained therewith.

PRODUCTION OF POLYETHER SILOXANES

Processes for producing polyether siloxanes are provided in which unsaturated polyethers are reacted with one or more SiH-functional siloxanes in the presence of Pt(0) compounds and tertiary amines Also, provided is the use of Pt(0) compounds and tertiary amines for producing polyether siloxanes and to the use of the polyether siloxanes thus obtained.

PROCESS FOR THE PREPARATION OF BRANCHED POLYORGANOSILOXANES

The invention relates to a process for the preparation of branched siloxanes containing R—SiO3/2 units, where R=organic radical, wherein straight-chain polysiloxanes containing silane hydrogen in the polymer chain are reacted in the presence of ammonium or metal carboxylates as a catalyst in the absence of hydroxy-functional organic compounds, and to siloxanes thus prepared and the use thereof in the preparation of polyurethane foams and antifoam formulations.

Trimerization Catalysts

The invention relates to a trimerization catalyst system comprising at least 50% by weight of potassium octoate and a hydroxy-group-free and amino-group-free solvent which, under the reaction conditions, is inert toward the isocyanates used, to its use for the trimerization of isocyanates to give isocyanurates and/or polyisocyanurates, and to a process for production of PIR foams using the inventive trimerization catalyst system and PIR foams.

Composition which is suitable for producing polyurethane foams and contains at least one HFO blowing agent

The present invention relates to compositions which are suitable for producing polyurethane foams and contain at least one polyol component, at least one blowing agent, a catalyst which catalyzes the formation of a urethane or isocyanurate bond, a silicon-containing foam stabilizer and optionally further additives and optionally an isocyanate component, characterized in that they contain at least one unsaturated halogenated hydrocarbon as blowing agent and additionally at least one surfactant TD which does not have a silicon atom and has an HLB of less than 10, where the proportion of the sum of the surfactants TD in the composition is from 0.05 to 20 parts by mass per 100 parts by mass of polyol components, a process for producing polyurethane and polyisocyanurate foams, in particular rigid foams, starting out from these polyol compositions, the use of the foams, in particular as insulation material, and also the insulation materials themselves.

SILICONE STABILIZERS FOR RIGID POLYURETHANE OR POLYISOCYANURATE FOAMS

A polyether siloxane of formula (I) R1Si(CH3)2O[Si(CH3)2O]n[Si(CH3)RO]mSi(CH3)2R2(I) where R, R1 and R2 are the same or different, R in each occurrence is the same or different and represents (CH2)xO(CH2CRRO)yR, R and R are the same or different and each represent H, CH3, CH2CH3 or phenyl, R represents H, alkyl or acyl, R1 and/or R2 each represent methyl or R, wherein the alkylene oxide units (CH2CRRO) within a polyether residue R can be the same or different and the polyether residues R within a polyether siloxane molecule of formula (I) can be the same or different, wherein on average (number average, averaged over all compounds of formula (I)) n+m+2=>10 to 200, m=0 to 40 for R1 and/or R2 representing R or m=1 to 40 for R1 and R2 representing CH3, x=2 to 10, y=1 to 50, at least 25% of the R radicals represent hydrogen and at least 50% of all polyether residues R which have an end group R=H have a secondary or tertiary OH end group. The polyether siloxane has almost no primary but overwhelmingly ...

Method for producing polyurethane foam

A method for producing polyurethane foams by reacting at least one organic isocyanate moiety, at least one polyol, a blowing agent consisting of halogen-containing (fluorine-containing) olefins and at least a siloxane of Formula I b, c and d are defined herein, as well as compositions made by said method are described.

Compositions containing polyether-polysiloxane copolymers

The present invention relates to compositions containing polyether-siloxane copolymers which are based on branched SiH-functional siloxanes, where at least one of the polyether-siloxane copolymers has a radical -OR8 where R8=hydrogen or an alkyl radical having from 1 to 10 carbon atoms which is bound to a silicon atom, a process for producing polyurethane foam in which these compositions are used as foam stabilizers, polyurethane foams containing these compositions and the use of these polyurethane foams.

Composition that is suitable for producing polyurethane foams and that contains at least one nucleating agent

Disclosed herein is a method for producing polyurethane or polyisocyanurate foams. The method involves reacting a composition (Z1) with at least one polyisocyanate, and occurs in the presence of at least one nucleating agent and a blowing agent, in which the nucleating agent and the blowing agent are mixed to obtain a composition (Z2) that is added to the composition (Z1) before it is reacted with the at least one polyisocyanate. The composition (Z1) contains (i) 100 parts by mass of a composition (ZP) including at least one polyol and at least one catalyst that catalyzes formation of a urethane, urea or isocyanuarate bond, and (ii) from 0.05 to 10 parts by mass of a surfactant TD having an HLB value below 6 and no silicon atom.

COMPOSITIONS CONTAINING POLYETHER-POLYSILOXANE COPOLYMERS

The present invention relates to compositions containing polyether-siloxane copolymers which are based on branched SiH-functional siloxanes, where at least one of the polyether-siloxane copolymers has a radical —OR8 where R8=hydrogen or an alkyl radical having from 1 to 10 carbon atoms which is bound to a silicon atom, a process for producing polyurethane foam in which these compositions are used as foam stabilizers, polyurethane foams containing these compositions and the use of these polyurethane foams.

POLYMERIC MATERIALS AND ALSO ADHESIVE AND COATING COMPOSITIONS COMPOSED THEREOF AND BASED ON MULTI-ALKOXYSILYL-FUNCTIONAL PREPOLYMERS

Prepolymers having more than one alkoxysilyl function per chain end reactive towards epoxide groups as a constituent of curable compositions, and their use for producing adhesive-bonding and coating compositions, which may also be foamable, and also polymeric materials produced therefrom.

SILICONE STABILIZERS FOR RIGID POLYURETHANE OR POLYISOCYANURATE FOAMS

The invention provides partially endcapped polyether siloxanes, the use of these polyether siloxanes as foam stabilizers and also rigid polyurethane or polyisocyanurate foams obtained using the polyether siloxanes. 1. A polyether siloxane of formula (I) ,{'br': None, 'sub': 3', '2', '3', '2', 'n', '3', 'm', '3', '2, 'sup': 1', '2, 'R—Si(CH)—O—[—Si(CH)—O—]—[—Si(CH)R—O—]—Si(CH)—R\u2003\u2003(I)'}where{'sup': 1', '2, 'R, Rand Rare the same or different,'}{'sup': '2', 'R and/or Rare methyl or R′,'}{'sup': '1', 'sub': 2', 'x', 'z', '2', 'y, 'Rin each occurrence is the same or different and represents —(CH)—(O)—(CH—CHR′—O)—R″,'}{'sub': 3', '2', '3, 'R′ in each occurrence is the same or different and represents —H, —CH, —CHCHor phenyl,'}R″ in each occurrence is the same or different and represents —H, —(CO)—R′″, —(CO)—NH—R′″ or -alkyl,{'sub': 1', '40, 'claim-text': n+m+2=10 to 85,', 'm=0 to 20,', 'x=2 to 15,', 'y=1 to 40,', 'z=0 to 1, 'R′″ in each occurrence is the same or different and represents Cto C-alkyl, -aryl or -alkylaryl,'}{'sub': '2', 'where the (CH—CHR′—O) units can be the same or different,'}{'sup': 2', '1, 'with the proviso that for m=0 at least one R or Rradical is R,'}{'sup': '1', 'and that for z=0 the requirement is that x and y=0 and R″ contains at least 3 carbon atoms, although z=0 applies to not more than 70 mol % of the Rradicals in the siloxane,'}or a mixture thereof,wherein on average (number average, averaged over all compounds of formula (I)) from 10 to 90 mol % of the R″ radicals are not hydrogen radicals, and the remaining proportions of the R″ radicals are hydrogen atoms.2. The polyether siloxane of claim 1 , wherein (n+m)/m is not less than 5.3. The polyether siloxane of claim 1 , wherein on average at least 75 mol % of the R and Rradicals are R.4. The polyether siloxane of claim 1 , wherein on average (number average claim 1 , averaged over all compounds of formula (I)) at least 50 mol % of the R′ radicals are —H.5. The polyether siloxane of ...

METHOD FOR PRODUCING POLYURETHANE INSULATING FOAMS

The object of the invention is a method for producing polyurethane and/or polyisocyanurate insulating foam based on foaming reaction mixtures containing polyisocyanates, compounds having reactive hydrogen atoms, propellants, stabilizers, nucleation agents, and optionally further additives, which is characterized in that porous solids, in particular silicates having a zeolite structure, are used as the nucleation agents.

Production Of Fine Cell Foams Using A Cell Aging Inhibitor

The use of an Ostwald hydrophobe in the production of polymer foams, preferably polyurethane foam, in particular rigid polyurethane foam, from liquid reaction mixtures, to retard cell ageing, in particular to retard cell ageing caused by Ostwald ripening, is described. 1. A method or making polymer foams from liquid reaction mixtures , to retard cell ageing , in particular to retard cell ageing caused by Ostwald ripening , said method comprising the step ofa) adding from from 0.0001 to 5% by mass an Ostwald hydorphobe to a misture for the polymer foam, andb) reacting the mixture of step a){'sub': 'stand', 'sup': −3', '2, 'wherein the polymer foam has a standardized ageing rate kof ≤1.0×10mm/s.'}2. The method according to claim 1 , wherein the standardized ageing rate kis ≤0.9×10mm/s.3. The method according to claim 1 , wherein the total quantity of Ostwald hydrophobe is from 0.0001 to at most 3% by mass claim 1 , based on the total mass of the foam formulation inclusive of the blowing agents.4. The method according to claim 1 , wherein the standardized ageing rate k claim 1 , which can be determined as described herein claim 1 , is reduced by at least 20% claim 1 , when measured in comparison with the value of kwithout addition of the additional substances to retard cell ageing.5. The method according to claim 1 , wherein the Ostwald hydrophobe claim 1 , under standard conditions claim 1 , has a boiling point below 150° C. and low solubility in the liquid foam matrix claim 1 , where this means that claim 1 , when the concentration used thereof is at most 5% by mass claim 1 , it leads to visible haze and/or phase separation claim 1 , and in the case of foams produced via foaming of multicomponent reactive systems the said criterion preferably applies independently for all of the individual components claim 1 , and in particular in the case of a polyurethane system the Ostwald hydrophobe prcfcrably has low solubility not only in the polyol mixture claim 1 , ...

COMPOSITION WHICH IS SUITABLE FOR PRODUCING POLYURETHANE FOAMS AND CONTAINS AT LEAST ONE HFO BLOWING AGENT

The present invention relates to compositions which are suitable for producing polyurethane foams and contain at least one polyol component, at least one blowing agent, a catalyst which catalyzes the formation of a urethane or isocyanurate bond, a silicon-containing foam stabilizer and optionally further additives and optionally an isocyanate component, characterized in that they contain at least one unsaturated halogenated hydrocarbon as blowing agent and additionally at least one surfactant TD which does not have a silicon atom and has an HLB of less than 10, where the proportion of the sum of the surfactants TD in the composition is from 0.05 to 20 parts by mass per 100 parts by mass of polyol components, a process for producing polyurethane and polyisocyanurate foams, in particular rigid foams, starting out from these polyol compositions, the use of the foams, in particular as insulation material, and also the insulation materials themselves. 1. A composition which is suitable for producing polyurethane foams and contains at least one polyol component , at least one blowing agent , a catalyst which catalyzes the formation of a urethane or isocyanurate bond , a silicon-containing foam stabilizer and optically further additives and optionally an isocyanate component , characterized in that it contains at least one unsaturated halogenated hydrocarbon as blowing agent and at least one surfactant TD which does not have a silicon atom and has an HLB of less than 10 , where the proportion of the sum of the surfactants TD in the composition is from 0.05 to 20 parts by mass per 100 parts by mass of polyol component.3. The composition according to claim 1 , wherein that the surfactant TD has at least one hydrocarbon radical having at least 4 carbon atoms and has an HLB of less than 10.4. The composition according to claim 1 , wherein the surfactant TD has an HLB of less than 6.5. The composition according to claim 1 , wherein it contains Cocoamid DEA claim 1 , ...

COMPOSITE MATERIALS COMPRISING AN OPEN-CELL POLYMER MATRIX AND GRANULES EMBEDDED THEREIN

Composite materials are provided that include an open-cell polymer foam matrix including one or more polymers and, embedded into the polymer foam matrix, granules or shapes which have an open porosity. 1. A composite material comprising an open-cell polymer foam matrix comprising one or more polymers and , embedded into the polymer foam matrix granules which have an open porosity.2. The composite material according to claim 1 , wherein said composite material has a gas-pycnometric open-cell proportion of greater than 50%.3. The composite material according to claim 1 , wherein the polymer foam matrix is a polyurethane or polyisocyanurate foam.4. The composite material according to claim 1 , wherein the granules are produced substantially from materials having a BET surface area of greater than 5 m/g.5. The composite material according to claim 1 , wherein the granules consist substantially of compacted powders of fumed silica or precipitated silica.6. The composite material according to claim 1 , wherein the open pores have a pressure of less than 500 mbar.7. The composite materials according to claim 6 , wherein the polymer foam matrix has a gas-tight shell of metal claim 6 , glass claim 6 , plastic or a composite of these materials.8. The composite material according to claim 1 , wherein the composite material is a vacuum insulation element or is used as a vacuum insulation element.9. A method for producing a composite material comprising mixing a material for producing a polymer foam matrix with granules having an open porosity claim 1 , and generating from this mixture an open-cell polymer foam matrix in which the granules are embedded.10. The method according to claim 9 , wherein the material for producing a polymer foam matrix is a polymer or a mixture of polymers or are the reactants for generating the polymer or polymers and wherein a foaming step is further performed.11. The method according to claim 9 , wherein the polymer foam matrix is evacuated and gas- ...

Composite materials comprising an open-cell polymer matrix and granules embedded therein

Composite materials are provided that include an open-cell polymer foam matrix including one or more polymers and, embedded into the polymer foam matrix, granules or shapes which have an open porosity.

USE OF SILICONE-POLYETHER BLOCK COPOLYMERS WITH HIGH MOLECULAR WEIGHT NON-ENDCAPPED POLYETHER MOIETIES AS STABILIZERS FOR PRODUCTION OF LOW-DENSITY POLYURETHANE FOAMS

A process for production of polyurethane foams having a density of below 24.0 kg/mis provided. The process includes utilizing a silicone-polyether block copolymer comprising a polyorganosiloxane which includes at least one polyether moiety. The polyorganosiloxane has attached to it at least one non-endcapped polyether moiety having a molecular weight of not less than 4500 g/mol. Polyurethane foams and articles which are obtainable by the process of the present invention are also disclosed. 1. A process for the production of polyurethane foams having a density of below 24 kg/m , said process comprising reacting at least one polyol , at least one isocyanate and a silicone-polyether block copolymer , said silicone-polyether block copolymer comprising a polyorganosiloxane which includes at least one polyether moiety , wherein the polyorganosiloxane has attached to it at least one non-endcapped polyether moiety having a molecular weight of not less than 4500 g/mol.2. The process according to claim 1 , wherein the weight average molecular weight of all polyether moieties attached to the polyorganosiloxane by chemical bonding is above 1500 g/mol.3. The process according to claim 1 , wherein the silicone-polyether block copolymer comprises a silicone-polyether copolymer in which the polyorganosiloxane has attached to it by chemical bonding at least one polyether moiety having a molecular weight of not less than 4500 g/mol and at least one polyether moiety having a molecular weight of below 4500 g/mol.4. The process according to claim 1 , wherein the silicone-polyether block copolymer comprises a silicon-polyether block copolymer in which a weight average molecular weight of a sum total of all polyether moieties attached to the polyorganosiloxane by chemical bonding is in a range from above 3000 g/mol to below 5000 g/mol.6. The process according to claim 5 , wherein R″ is hydrogen for all polyether moieties Rhaving a molecular weight not less than 4500 g/mol.7. The process ...

Composition Suitable for Preparing Polyurethane- or Polyisocyanurate Rigid Foams

A process for producing polyurethane foam by reacting at least one polyol component with at least one isocyanate component in the presence of at least one blowing agent and of one or more catalysts that catalyze the isocyanate-polyol and/or isocyanate-water reactions and/or the isocyanate trimerization, wherein the reaction is conducted in the presence of selected polyether-siloxane copolymers, is described. 2. The process according to claim 1 , wherein R=R.3. The process according to claim 1 , wherein the polyurethane foam is a rigid polyurethane foam.4. The process according to claim 1 , wherein the polyether siloxanes of the formula I are used in a total proportion by mass of 0.1 to 10 parts based on 100 parts by mass of polyol component.5. The process according to claim 1 , wherein at least 90 parts by weight of the polyols present claim 1 , based on 100 parts by weight of polyol component claim 1 , have an OH number greater than 100.6. The process according to claim 1 , wherein hydrocarbons having 3 claim 1 , 4 or 5 carbon atoms claim 1 , such as claim 1 , cyclo- claim 1 , iso- and/or n-pentane claim 1 , hydrofluorocarbons claim 1 , hydrochlorofluorocarbons claim 1 , hydrohaloolefins.7. The polyurethane foam claim 1 , especially rigid polyurethane foam claim 1 , obtainable by a process according to .8. The polyurethane foam according to claim 7 , wherein the closed cell content is ≥80% claim 7 , preferably the closed cell content being determined according to DIN ISO 4590.9. A thermal insulation for cooling technology comprising the polyurethane foam according to wherein the thermal insulation is used in cooling technology selected from the group consisting of refrigerators claim 7 , freezers claim 7 ,an insulation panel, sandwich element,pipe insulation,vessel, tank walls for cryogenic storage at temperatures <−50° C.,for insulation of vessel and/or tank walls for cold storage at temperatures of −50° C. to 20° C.,as a constituent of cryogenic insulation ...

COMPOSITE MATERIALS COMPRISING A POLYMER MATRIX AND GRANULES EMBEDDED THEREIN

The present invention provides composite materials comprising a polymer matrix comprising one or more polymers and, embedded into the polymer matrix, granules which preferably after embedding have at least one cavity which is closed off relative to the ambient environment and in which there is an underpressure relative to the standard pressure of 1 bar (100 kPa), a method for producing such composite materials, and use as insulating material. 1. A composite material comprising a polymer matrix comprising one or more polymers and , embedded into the polymer matrix , granules which have at least one cavity which is closed off relative to an ambient environment and in which there is an underpressure relative to a standard pressure of 1 bar (100 kPa).2. The composite material according to claim 1 , wherein the underpressure is less than 500 mbar.3. The composite material according to claim 1 , wherein the at least one cavity is closed off relative to the ambient environment by a bather composed of a glasslike compound or of a plastic-metal composite.4. The composite material according to claim 1 , wherein the polymer matrix is a closed-cell polymer foam matrix.5. The composite material according to claim 4 , wherein the polymer foam matrix is a rigid polyurethane or polyisocyanurate foam.6. The composite material according to claim 1 , wherein the granules comprise a material having a BET surface area of greater than 5 m/g claim 1 ,.7. The composite material according to claim 1 , wherein the granules consist substantially of compacted powders of fumed silica or precipitated silica.8. A method for producing a composite material comprising mixing a material for producing a polymer matrix with granules having at least one cavity which is closed off relative to an ambient environment and in which there is an underpressure relative to a standard pressure of 1 bar (100 kPa) claim 1 , and embedding the granules within the polymer matrix.9. The method according to claim 8 , ...

Process for the preparation of branched polyorganosiloxanes

The invention relates to a process for the preparation of branched siloxanes containing RSiO3/2 units, where R=organic radical, wherein straight-chain polysiloxanes containing silane hydrogen in the polymer chain are reacted in the presence of ammonium or metal carboxylates as a catalyst in the absence of hydroxy-functional organic compounds, and to siloxanes thus prepared and the use thereof in the preparation of polyurethane foams and antifoam formulations.

PRODUCTION OF POLYURETHANE FOAM

Compositions for producing a rigid polyurethane foam are described, comprising at least one isocyanate component, a polyol component, optionally a catalyst which catalyzes the formation of a urethane or isocyanurate bond, wherein the composition has hydrocarbons having 3, 4 or 5 carbon atoms, hydrofluorocarbons, hydrofluoroolefins (HFO), hydrohaloolefins, oxygen-containing blowing agents and/or chlorohydrocarbons as blowing agent, and also comprises acrylate and/or methacrylate copolymers as foam stabilizers. 1. A composition for producing a rigid polyurethane foam , the composition comprising at least one isocyanate component , a polyol component , optionally a catalyst which catalyzes the formation of a urethane or isocyanurate bond , wherein the composition has hydrocarbons having 3 , 4 or 5 carbon atoms , hydrofluorocarbons , hydrofluoroolefins (HFO) , hydrohaloolefins , oxygen-containing blowing agents and/or chlorohydrocarbons as blowing agent , and also comprises acrylate and/or methacrylate copolymers as foam stabilizers.3. The composition according to claim 1 , wherein the blowing agents used are hydrocarbons having 3 claim 1 , 4 or 5 carbon atoms claim 1 , perfluorinated compounds such as perfluoropentane and perfluorohexane and/or perfluorohexene claim 1 , hydrofluoroolefins or hydrohaloolefins claim 1 , water claim 1 , oxygen-containing compounds such as methyl formate claim 1 , acetone and/or dimethoxymethane claim 1 , and/or chlorohydrocarbons claim 1 , preferably dichloromethane and/or 1 claim 1 ,2-dichloroethane.4. The composition according to claim 1 , wherein the acrylate and/or methacrylate copolymers have a number-average molecular weight Mn claim 1 , determined by gel permeation chromatography in accordance with DIN 55672-1:2016-03 (eluent: THF; standard: PMMA) claim 1 , in the range of 500 to 100 000 g/mol.5. The composition according to claim 1 , wherein the proportion by mass of the total amount of acrylate and/or methacrylate copolymers ...

Production of polyether siloxanes

Processes for producing polyether siloxanes are provided in which unsaturated polyethers are reacted with one or more SiH-functional siloxanes in the presence of Pt(0) compounds and tertiary amines Also, provided is the use of Pt(0) compounds and tertiary amines for producing polyether siloxanes and to the use of the polyether siloxanes thus obtained.

METHOD FOR PRODUCING POLYURETHANE FOAM

The invention relates to a method for producing polyurethane foams using ingredients containing at least one expanding agent consisting of halogen-containing (fluorine-containing) olefins and at least a siloxane having formula (I). 2. The method according to whereina in each occurrence independently is from 1 to 300,b in each occurrence independently is from 1 to 50,c in each occurrence independently is >0 to 4,d in each occurrence independently is >0 to 4,{'sup': '1', 'with the proviso that, per molecule of formula (I), the average number Σd of T-units and the average number Σc of Q-units per molecule are neither greater than 20, the average number Σa of D-units per molecule is not greater than 1500 and the average number Σb of R-bearing siloxy units per molecule is not greater than 50.'}3. The method according to wherein{'sup': '1', 'claim-text': [{'sub': 2', '2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}, {'sub': 2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″, or'}, {'sub': '2', 'sup': 'IV', '—CH—R'}, 'where', 'x is from 0 to 100,', 'y is from 0 to 100,', 'R′ in each occurrence independently may be different and is methyl, ethyl and/or phenyl and,', {'sub': '2', 'R″ in each occurrence independently is hydrogen or an alkyl group of 1 to 4 carbon atoms, a —C(O)—R′″ group where R′″=alkyl, a —CH—O—R′ group, an alkylaryl group, or a —C(O)NH—R′ group,'}, {'sup': 'IV', 'Ris a linear, cyclic or branched hydrocarbon moiety having 1 to 50 carbon atoms.'}], 'Rin each occurrence independently is an organic moiety'}4. The method according to wherein{'sup': '1', 'claim-text': [{'sub': 2', '2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}, {'sub': 2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}, {'sub': '2', 'sup': 'IV', '—CH—R, and mixtures thereof'}, 'where', 'x is from 0 to 100,', 'y is from 0 to 100,', 'R′ is methyl and', {'sub': '2', 'R″ in each occurrence independently ...

Polymeric materials and also adhesive and coating compositions composed thereof and based on multi-alkoxysilyl-functional prepolymers

Prepolymers having more than one alkoxysilyl function per chain end reactive towards epoxide groups as a constituent of curable compositions, and their use for producing adhesive-bonding and coating compositions, which may also be foamable, and also polymeric materials produced therefrom.

THE INVENTION RELATES TO THE USE OF FOAM STABILIZERS, PRODUCED ON THE BASIS OF SUSTAINABLE RAW MATERIALS, FOR PRRODUCING POLYURETHANE FOAMS

Preparation and use of polyurethane foams with the use of foam stabilizers of the general formula (I) ...

METHOD FOR PRODUCING POLYURETHANE FOAM

A method for producing polyurethane foams by reacting at least one organic isocyanate moiety, at least one polyol, a blowing agent consisting of halogen-containing (fluorine-containing) olefins and at least a siloxane of formula (I) 2. The method according to whereina in each occurrence independently is from 1 to 300,b in each occurrence independently is from 1 to 50,c in each occurrence independently is >0 to 4,d in each occurrence independently is >0 to 4,{'sup': '1', 'with the proviso that, per molecule of formula (I), the average number Σd of T-units and the average number Σc of Q-units per molecule are neither greater than 20, the average number Σa of D-units per molecule is not greater than 1500 and the average number Σb of R-bearing siloxy units per molecule is not greater than 50.'}3. The method according to wherein{'sup': '1', 'claim-text': [{'sub': 2', '2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″'}, {'sub': 2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″, or'}, {'sub': '2', 'sup': 'IV', '—CH—R'}, 'where', 'x is from 0 to 100,', 'y is from 0 to 100,', 'R′ in each occurrence independently may be different and is methyl, ethyl and/or phenyl and,', {'sub': '2', 'R″ in each occurrence independently is hydrogen or an alkyl group of 1 to 4 carbon atoms, a —C(O)—R′″ group where R′″=alkyl, a —CH—O—R′ group, an alkylaryl group, a —C(O)NH—R′ group,'}, {'sup': 'IV', 'Ris a linear, cyclic or branched, hydrocarbon moiety having 1 to 50 carbon atoms.'}], 'Rin each occurrence independently is an organic moiety'}4. The method according to wherein{'sup': '1', 'claim-text': [{'sub': 2', '2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}, {'sub': 2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}, {'sub': '2', 'sup': 'IV', '—CH—R, and mixtures thereof'}, 'where', 'x is from 0 to 100,', 'y is from 0 to 100,', 'R′ is methyl and', {'sub': '2', 'R″ in each occurrence independently ...

SILICONE STABILIZERS FOR RIGID POLYURETHANE OR POLYISOCYANURATE FOAMS

The invention provides partially endcapped polyether siloxanes, the use of these polyether siloxanes as foam stabilizers and also rigid polyurethane or polyisocyanurate foams obtained using the polyether siloxanes. 2. The process of claim 1 , wherein a composite material claim 1 , a panel or both are produced.3. The process of claim 1 , further comprising foaming the rigid foam onto a surfacing layer or in-between two surfacing layers.4. The process of claim 3 , wherein the at least one surfacing layer is a metal or plastics surfacing layer.5. The process of claim 1 , wherein (n+m)/m is not less than 5.6. The process of claim 1 , wherein on average claim 1 , the average being a number average averaged over all compounds of formula (I) claim 1 , at least 50 mol % of the R′ radicals are —H.7. A rigid polyurethane or polyisocyanurate foam formed by the process of .8. The rigid polyurethane or polyisocyanurate foam of claim 7 , wherein said foam contains from 0.1 to 10 parts by mass of polyether siloxane based on 100 parts by mass of polyol component.9. The rigid polyurethane or polyisocyanurate foam claim 7 , wherein said rigid foam is formed into an insulation board claim 7 , insulant claim 7 , or cooling apparatus. The present application is a divisional application of U.S. patent application Ser. No. 13/325,812, filed Dec. 14, 2011, which claims the benefit of priority of German Patent Application No. 102010063241.4 filed Dec. 16, 2010, the entire contents of which are incorporated herein by reference.The present invention relates to polyether siloxanes and their use as foam stabilizers in the production of polyurethane or polyisocyanurate foams, more particularly rigid foams, which offer advantageous performance characteristics, such as low thermal conductivity and good surface quality.Rigid polyurethane and polyisocyanurate foams are produced using cell-stabilizing additives to ensure a fine-celled, uniform and low-defect foam structure and hence to exert an ...

ISOCYANATE/SILOXANE POLYETHER COMPOSITION

The present invention is directed to a composition comprising a siloxane of the formula (I) having at least one polyether radical which is linked via a urethane bond to an organic radical, preferably to an organic radical which has one or more isocyanate groups and/or polyurethane bonds, and one or more compounds which have two or more isocyanate groups, characterized in that the composition comprises no polyols which contain no silicon, or reaction products thereof with isocyanates; to use of the composition for producing polyurethanes and polyurethane foams; and to polyurethanes and polyurethane foams produced accordingly; and to their use. 2. The composition according to claim 1 , wherein said siloxane of said formula (I) comprises a siloxane in which q=0.3. The composition according to claim 1 , wherein said siloxane of said formula (I) comprises a siloxane in which c and d=0.4. The composition according to claim 1 , wherein said siloxane of said formula (I) comprises a siloxane in which the radicals which carry radicals of said formula (II) are arranged exclusively in comb positions.5. The composition according to claim 1 , wherein said siloxane of said formula (I) comprises a siloxane claim 1 , or consists exclusively of siloxanes claim 1 , in which the ratio a/b is at least 7.6. The composition according to claim 1 , wherein said siloxane of said formula (I) comprises a siloxane in which oxyalkylene units present in Rare exclusively oxyethylene units.7. The composition according to claim 1 , wherein said siloxane of said formula (I) comprises a siloxane in which Rindependently at each occurrence is an organic radical selected from the group consisting of{'sub': 2', '2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}{'sub': 2', '2', '2', '2', 'x', '2', 'y, '—CH—CH—O—(CH—CHO—)—(CH—CH(R′)O—)—R″,'}{'sub': '2', 'sup': 'IV', '—CH—R, and any combination thereof,'}in whichx is 0 to 100,y is 0 to 100,R′ is methyl, and{'sub': '2', 'R″ ...

COMPOSITION THAT IS SUITABLE FOR PRODUCING POLYURETHANE FOAMS AND THAT CONTAINS AT LEAST ONE NUCLEATING AGENT

The present invention relates to a method of producing polyurethane or polyisocyanurate foams which comprises the step of reacting a composition (Z1), comprising a composition (ZP) at least comprising a polyol and a catalyst that catalyzes the formation of a urethane, urea or isocyanurate bond, and a surfactant TD having an HLB value below 10 and no silicon atom, wherein the sum total of surfactants TD in the composition comprises from 0.05 to 10 parts by mass per 100 parts by mass of the composition (ZP), with at least one polyisocyanate, wherein the step of reacting takes place in the presence of a nucleating agent selected from the group consisting of perfluorinated hydrocarbons, ethers having at least one perfluorinated hydrocarbyl moiety and ketones having at least one perfluorinated hydrocarbyl moiety, and of a blowing agent, wherein the nucleating agent differs from the blowing agent, and wherein the nucleating agent and the blowing agent are mixed to obtain a composition (Z2) and said composition (Z2) is added to said composition (Z1) before the step of reacting with the at least one polyisocyanate. The present invention further relates to a stabilized composition (ZS) and also to a kit for preparing a stabilized composition (ZS) for producing a polyurethane or polyisocyanurate foam, and to methods of producing polyurethane or polyisocyanurate foams by reacting a stabilized composition of the present invention and/or a stabilized composition obtained or obtainable according to a method of the invention. 1: A method of producing polyurethane or polyisocyanurate foams , comprising reacting (i) a composition (ZP) at least comprising a polyol and a catalyst that catalyzes the formation of a urethane, urea or isocyanurate bond, and', '(ii) a surfactant TD having an HLB value below 10 and no silicon atom, wherein the sum total of surfactants TD in the composition comprises from 0.05 to 10 parts by mass per 100 parts by mass of the composition (ZP),, '(a) a ...

Process for the preparation of branched polyorganosiloxanes

Die Erfindung betrifft ein Verfahren zur Herstellung verzweigter, R-SiO<SUB>3/2</SUB>-Einheiten enthaltender Siloxane, mit R = organischer Rest, welches dadurch gekennzeichnet ist, dass unverzweigte, in der Polymerkette Silanwasserstoff enthaltende Polysiloxane in Gegenwart von Ammonium- oder Metallcarboxylaten als Katalysator in Abwesenheit von hydroxyfunktionellen organischen Verbindungen umgesetzt werden, sowie so hergestellt Siloxane und deren Verwendung bei der Herstellung von Polyurethanschäumen und Entschäumerformulierungen. The invention relates to a process for producing branched, R-SiO <SUB> 3/2 </ SUB> units containing siloxanes, with R = organic radical, which is characterized in that unbranched, in the polymer chain silane containing polysiloxanes in the presence of Ammonium or metal carboxylates are reacted as a catalyst in the absence of hydroxy-functional organic compounds, and so produced siloxanes and their use in the preparation of polyurethane foams and defoamer formulations.

Silicon stabilisers for polyurethane or polyisocyanurate rigid foams

Polyether siloxane derivative (I), is new. Polyether siloxane derivative of formula (R-Si(CH 3) 2-O-[-Si(CH 3) 2-O-] n-[-Si(CH 3)R1-O-] m-Si(CH 3) 2-R2) (I) or its mixture, is new. R, R2 : CH 3or R1; R1 : -(CH 2) x-(O) z-(CH 2-CHR3-O) y-R4; R3 : -H, -CH3, -CH 2CH 3, or phenyl; R4 : -H, -(CO)-R5,-(CO)-NH-R5 or -alkyl, where on average (number average, averaged over all compounds of (I)) of 10-90 mole-% of R4 is not H, but preferably -(CO)-R5, -(CO)-NH-R5 or -alkyl, preferably 1-40C alkyl, preferably CH 3and remaining portions of R4 is H; R5 : 1-40C alkyl, 1-40C aryl or 1-40C alkylaryl; n+m+2 : 10-85; m : 0-20; x : 2-15; y : 1-40; and z : 0 or 1. Provided that: when m is 0, then at least one R or R2 is equal to R1; when z is 0, then x and y is 0 and R3 comprises at least 3 C; and for not > 70 mole-% of R1 in siloxane, z is 0. Independent claims also included for: (1) a composition for preparing polyurethane or polyisocyanurate foam, comprising at least one isocyanate, at least one polyol, at least one foam stabilizer, at least one urethane and/or isocyanurate catalyst, water, blowing agent, optionally at least one flame retardant and/or further additives, where at least one polyether siloxane (I) is present as foam stabilizer; (2) preparing polyurethane- or polyisocyanurate foam comprising reacting the composition; (3) the polyurethane- or polyisocyanurate rigid foam obtained by the above mentioned method; and (4) a cooling apparatus comprising the polyurethane or polyisocyanurate foam.

Compound containing special amides and organomodified siloxanes, suitable for producing polyurethane foams

Composition comprises at least one polyol component, a catalyst, which catalyzes the formation of a urethane- or isocyanurate bond, optionally a propellant, optionally further additives, optionally an isocyanate component, and a mixture containing at least one amide compound (I) and at least one siloxane compound, where the mass ratio of siloxane compound and (I) is greater than 1-10. Composition comprises at least one polyol component, a catalyst, which catalyzes the formation of a urethane- or isocyanurate bond, optionally a propellant, optionally further additives, optionally an isocyanate component, and a mixture containing at least one amide compound of formula (R-(C(=O)-N(R11)-X-Z) m) (I) and at least one siloxane compound, where the mass ratio of siloxane compound and (I) is greater than 1-10. R : m-valent organic group; R11 : H, organic group or -X-Z; m : 1-5; Z : OH or NHR22; R22 : H or alkyl; and X : at least 2C divalent organic group. Independent claims are also included for: (1) producing polyurethane- or polyisocyanurate foams, comprising reacting the above composition; and (2) the polyurethane foam comprising (I) and the siloxane compound, which is obtainable by the above method.

Use of polysiloxanes containing branched polyether residues in preparation of polyurethane foams

Producing polyurethane foam using polysiloxane compound (I) as a foam stabilizer, is claimed. Producing polyurethane foam using polysiloxane compound of formula ((R1a)-(Si)-(R)( 2)-O) a-((Si)-(R)-(Rp)-O) b 1-((Si)-(R)-(Rv)-O) b 2-((Si)-(R2)( 2)-O) c-((Si)-(R3)-(R2)-O) d-Si-(R)( 2)-(R1b)) (I) as a foam stabilizer, is claimed. R2 : (-(O-(Si)-(R)-(Rp)) b 1-(O-(Si)-(R)-(Rv)) b 2-(O-(Si)-(R2)( 2)) c-(O-(Si)-(R3)-(R2)) d-(O-(Si)-(R)( 2)) a-R1); a : 0-2000; b1, b2 : 0-60; c, d : 0-10; R : cyclic, optionally branched, optionally saturated 1-20C hydrocarbon, or 6-20C aromatic hydrocarbon; R1 : R or -OR4; R1a, R1b : R, Rv, Rp, or -OR4; R3 : R, optionally substituted with heteroatoms, optionally saturated organic group, preferably alkyl-, aryl-, chloroalkyl-, chloroaryl-, fluoroalkyl-, cyanoalkyl-, acryloxyaryl-, acryloxyalkyl-, methacryloxyalkyl- methacryloxypropyl- or vinyl-; R4 : 1-10C alkyl, preferably methyl, ethyl or isopropyl; Rp : -OR4, H, or unbranched 1-30C polyether made of alkylene oxide units, arylene units and/or glycidyl units with a weight average molecular weight of 200-30000 g/mol, bonded via Si-C bonds, and/or Si-C bonds bound aliphatic, cycloaliphatic and/or aromatic polyester or polyether ester with a weight average molecular weight of 200-30000 g/mol; Rv : group of formula (-Z1(-Q-M1 i1-M2 i2-M3 i3-M4 i4-M5 i5-M6 i6-M7 i7-M8 i8-M9 i9-M10 i10-M11 i11-M12 i12-M13 i13-J i14) i(X-J) k) (II) bound via Si-C bond; either i : 1-10, preferably 2-3; and k : 0-9, preferably 1-3; or i+k : 1-10, preferably 2-3; i1-i14 : 0-500, preferably 1-30; Q : O, NH, N-alkyl, N-aryl, or S; Z1 : organic group, whose C is linked to the respective Q; J : H, cyclic or optionally branched, optionally saturated 1-30C aliphatic or aromatic hydrocarbon, 1-30C carboxylic acid, or optionally saturated functional organic group substituted with heteroatom; M1 : (-CH 2-CH 2-O-); M2 : (-CH-(CH 3)-CH 2-O-); M3 : (-C-(X1)-(X2)-C-(X3)-(X4)-O-); X1-X4 : H, or cyclic, or optionally branched, ...

Composition, suitable for the production of polyurethane foams, containing at least one nucleating agent

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Polyurethan- oder Polyisocyanuratschaumstoffen umfassend die Umsetzung einer Zusammensetzung (Z1), enthaltend eine Zusammensetzung (ZP) mindestens enthaltend ein Polyol und einen Katalysator, der die Ausbildung einer Urethan-, Harnstoff- oder Isocyanurat-Bindung katalysiert, und ein Tensid TD, welches kein Siliziumatom und einen HLB-Wert kleiner 10 aufweist, wobei der Anteil der Summe der Tenside TD in der stabilisierten Zusammensetzung von 0,05 bis 10 Massenteile pro 100 Massenteile der Zusammensetzung (ZP) beträgt, mit mindestens einem Polyisocyanat, wobei die Umsetzung in Gegenwart eines Nukleierungsmittel, ausgewählt aus der Gruppe bestehend aus perfluorierten Kohlenwasserstoffen, mindestens einen perfluorierten Kohlenwasserstoffrest aufweisenden Ethern und mindestens einen perfluorierten Kohlenwasserstoffrest aufweisenden Ketonen, und eines Treibmittels stattfindet, wobei das Nukleierungsmittel vom Treibmittel verschieden ist. Weiter betrifft die vorliegende Erfindung eine stabilisierte Zusammensetzung (ZS) sowie ein Kit zur Herstellung einer stabilisierten Zusammensetzung (ZS) für die Herstellung eines Polyurethan- oder Polyisocyanuratschaumstoffs, und Verfahren zur Herstellung von Polyurethan- oder Polyisocyanuratschaumstoffen durch Umsetzung einer erfindungsgemäßen stabilisierten Zusammensetzung bzw. einer nach einem erfindungsgemäßen Verfahren erhaltenen oder erhältlichen stabilisierten Zusammensetzung. The present invention relates to a process for producing polyurethane or polyisocyanurate foams comprising the reaction of a composition (Z1) comprising a composition (ZP) at least comprising a polyol and a catalyst which catalyzes the formation of a urethane, urea or isocyanurate bond and a surfactant TD having no silicon atom and an HLB value less than 10, wherein the proportion of the sum of the surfactants TD in the stabilized composition is from 0.05 to 10 parts by mass per 100 parts ...

Composition which is suitable for producing polyurethane foams and contains at least one hfo blowing agent

The present invention relates to compositions which are suitable for producing polyurethane foams and contain at least one polyol component, at least one blowing agent, a catalyst which catalyzes the formation of a urethane or isocyanurate bond, a silicon-containing foam stabilizer and optionally further additives and optionally an isocyanate component, characterized in that they contain at least one unsaturated halogenated hydrocarbon as blowing agent and additionally at least one surfactant TD which does not have a silicon atom and has an HLB of less than 10, where the proportion of the sum of the surfactants TD in the composition is from 0.05 to 20 parts by mass per 100 parts by mass of polyol components, a process for producing polyurethane and polyisocyanurate foams, in particular rigid foams, starting out from these polyol compositions, the use of the foams, in particular as insulation materials, and also the insulation materials themselves.

Method for the preparation of fine cell foams using a cell aging inhibitor

Ein Verfahren zur Herstellung von Polymerschäumen aus flüssigen Reaktionsmischungen, vorzugsweise Polyurethan-Schaum, insbesondere Polyurethan-Hartschaum, in Gegenwart eines Zusatzstoffes zur Verlangsamung der Zellalterung, insbesondere zur Verlangsamung jener Zellalterung, welche nicht durch Koaleszenz, sondern durch Ostwald-Reifung verursacht wird, wird beschrieben. A process for producing polymer foams from liquid reaction mixtures, preferably polyurethane foam, in particular rigid polyurethane foam, in the presence of an additive for slowing cell aging, in particular for slowing cell aging, which is not caused by coalescence, but by Ostwald ripening, is described ,

Preparation of polyurethane foam

Es werden Zusammensetzungen zur Herstellung von Polyurethanhartschaum beschrieben, umfassend zumindest eine Isocyanat-Komponente, eine Polyolkomponente, optional einen Katalysator, der die Ausbildung einer Urethan- oder Isocyanurat-Bindung katalysiert, wobei die Zusammensetzung als Treibmittel Kohlenwasserstoffe mit 3, 4 oder 5 Kohlenstoff-Atomen, Fluorkohlenwasserstoffe, Hydrofluoroolefine (HFO), Hydrohaloolefine, Sauerstoff-haltige Treibmittel und/oder Chlorkohlenwasserstoffen aufweist, sowie Acrylat- und/oder Methacrylat-Copolymere als Schaumstabilisatoren umfasst. Compositions for producing rigid polyurethane foam are described, comprising at least one isocyanate component, a polyol component, optionally a catalyst which catalyzes the formation of a urethane or isocyanurate bond, the composition containing hydrocarbons having 3, 4 or 5 carbon atoms as blowing agents , Fluorocarbons, hydrofluoroolefins (HFO), hydrohaloolefins, oxygen-containing blowing agents and/or chlorinated hydrocarbons, and acrylate and/or methacrylate copolymers as foam stabilizers.

Production of polyurethane foam

A composition for producing polyurethane foam, in particular rigid polyurethane foam, comprising at least one isocyanate component, a polyol component, optionally a catalyst that catalyzes the formation of a urethane or isocyanurate bond, and a blowing agent, the composition comprising polyester polysiloxane block copolymers.

Silicone stabilizers for rigid polyurethane or polyisocyanurate foams

Gegenstand der Erfindung sind teilendverkappte Polyethersiloxane, die Verwendung dieser Polyethersiloxane als Schaumstabilisatoren sowie Polurethan- bzw. Polyisocyanurat-Hartschaumstoffe, die unter Verwendung der Polyethersiloxane erhalten werden. The invention relates to partially capped polyether siloxanes, the use of these polyether siloxanes as foam stabilizers and polyurethane or polyisocyanurate rigid foams, which are obtained using the polyether siloxanes.

Composition containing specific amides and organomodified siloxanes, suitable for the production of polyurethane foams

Gegenstand der vorliegenden Erfindung sind Zusammensetzungen, geeignet zur Herstellung von Polyurethanschäumen, die zumindest eine Polyolkomponente, einen Katalysator, der die Ausbildung einer Urethan- oder Isocyanurat-Bindung katalysiert, optional ein Treibmittel, gegebenenfalls weitere Additive und gegebenenfalls eine Isocyanat-Komponente aufweisen, welche dadurch gekennzeichnet sind, dass sie zusätzlich eine Abmischung aufweist, die mindestens ein spezielles Amid und mindest eine Siloxanverbindung aufweist, wobei das Massenverhältnis von Siloxanverbindungen zu Verbindungen der Formel (I) größer 1 zu 10 beträgt. The present invention relates to compositions suitable for producing polyurethane foams which have at least one polyol component, a catalyst which catalyzes the formation of a urethane or isocyanurate bond, optionally a blowing agent, optionally further additives and optionally an isocyanate component, which thereby are characterized in that they additionally have a mixture which has at least one special amide and at least one siloxane compound, the mass ratio of siloxane compounds to compounds of the formula (I) being greater than 1 to 10.

Composition containing specific amides and organomodified siloxanes, suitable for producing polyurethane foams

Compositions suitable for producing polyurethane foams which include at least a polyol component, a catalyst catalyzing the formation of a urethane or isocyanurate bond, optionally a blowing agent, optionally further additives and optionally an isocyanate component, which are characterized in that they additionally include an admixture including at least one specific amide and at least one siloxane compound, wherein the mass ratio of siloxane compounds to compounds of formula (I) is above 1:10.

Use of polysiloxanes containing branched polyether radicals for the production of polyurethane foams

Die vorliegende Erfindung betrifft die Verwendung von, im Polyetherrest verzweigten, vorzugsweise carbonatgruppenhaltigen Polyethersiloxan-Verbindungen als Schaumstabilisatoren bei der Herstellung von Polyurethanschäumen. The present invention relates to the use of branched in the polyether radical, preferably carbonate-containing polyether siloxane compounds as foam stabilizers in the production of polyurethane foams.

Composition suitable for the production of polyurethane foams containing at least one HFO propellant

Gegenstand der vorliegenden Erfindung sind Zusammensetzungen, geeignet zur Herstellung von Polyurethanschäumen, die zumindest eine Polyolkomponente, mindestens ein Treibmittel, einen Katalysator, der die Ausbildung einer Urethan- oder Isocyanurat-Bindung katalysiert, einen Silizium-haltigen Schaumstabilisator und gegebenenfalls weitere Additive und gegebenenfalls eine Isocyanat-Komponente enthalten, dadurch gekennzeichnet, dass sie als Treibmittel mindestens einen ungesättigten Halogenkohlenwasserstoff und zusätzlich mindestens ein Tensid TD, welches kein Siliziumatom und einen HLB-Wert kleiner 10 aufweist, enthalten, wobei der Anteil der Summe der Tenside TD in der Zusammensatzung von 0,05 und 20 Massenteile pro 100 Massenteile Polyolkomponenten beträgt, ein Verfahren zur Herstellung von Polyurethan- bzw. Polyisocyanuratschaumstoffen, insbesondere Hartschäume, ausgehend von diesen Polyolzusammensetzungen, die Verwendung der Schaumstoffe, insbesondere als Isolationsmaterialien sowie die Isolationsmaterialien selbst. The present invention relates to compositions suitable for producing polyurethane foams containing at least one polyol component, at least one blowing agent, a catalyst which catalyzes the formation of a urethane or isocyanurate bond, a silicon-containing foam stabilizer and optionally further additives and optionally an isocyanate Component, characterized in that it contains as blowing agent at least one unsaturated halogenated hydrocarbon and additionally at least one surfactant TD which has no silicon atom and an HLB value less than 10, the proportion of the sum of the surfactants TD in the composition of 0, 05 and 20 parts by mass per 100 parts by mass of polyol is a process for the preparation of polyurethane or Polyisocyanuratschaumstoffen, in particular rigid foams, starting from these polyol compositions, the use of the foams, in particular as insulating materials sow ie the insulation materials themselves.

Production of fine cell foams using a cell aging inhibitor

The invention relates to the use of an Ostwald hydrophobic agent in the production of polymer foams, preferably polyurethane foam, in particular a hard polyurethane foam, from liquid reaction mixtures for slowing down cell aging, in particular for slowing down cell aging caused by Ostwald ripening.

Polymeric materials and adhesives and coating materials based on multialkoxysilyl-functional prepolymers

Präpolymere mit mehr als einer Alkoxysilylfunktion pro gegenüber Epoxidgruppen reaktivem Kettenende als Bestandteil von härtbaren Zusammensetzungen und deren Verwendung zur Herstellung von Kleb- und Beschichtungsmitteln, die auch schäumbar sein können, sowie daraus hergestellte polymere Werkstoffe. Prepolymers having more than one alkoxysilyl function per epoxide group-reactive chain end as a constituent of curable compositions and their use for the preparation of adhesives and coating compositions, which may also be foamable, as well as polymeric materials prepared therefrom.

Isocyanate/siloxane polyether composition

Silicone stabilizers for rigid polyurethane or polyisocyanurate foams

The invention provides partially endcapped polyether siloxanes, and their use as foam stabilizers. Generally, the polyether siloxanes are of formula (I), R-Si (CH3)2-O- [-Si (CH3)2-O- ] n- [-Si (CH3) R1-O-]m-Si (CH3)2-R2 where R, R1 and R2 are the same or different, R and/or R2 are methyl or R1, R1 is the same or different and represents -(CH2)x-(O)z-(CH2-CHR'-O)y-R", where the (CH2-CHR'-O) units can be the same or different, R is the same or different and represents -H, -CH3, -CH2CH3 or phenyl, R" is the same or different and represents -H, -(CO)-R"',-(CO)-NH-R"' or -alkyl, is the same or different and represents C1 to C40-alkyl, -aryl or -alkylaryl, n + m + 2 = 10 to 150, m = 0 to 20, y = 1 to 40, z = 0 or 1. On average, 10 to 90 mol% of the R" radicals are not hydrogen radicals, and the remaining proportions of the R" radicals are hydrogen atoms.

Method for producing polyurethane foam.

Buluş, halojen içerikli (flor içeren) olefinleri ihtiva eden en az bir şişirme ajanından ve en az bir siloksandan meydana gelen, formül (I)'in bileşenlerini kullanarak poliüretan köpüklerin üretilmesine yönelik bir yöntem ile ilgilidir. The invention relates to a method for producing polyurethane foams using the components of formula (I), comprising at least one blowing agent containing halogenated (fluorine-containing) olefins and at least one siloxane.

Production of polyurethane foam

Composition for producing polyurethane foam, in particular rigid polyurethane foam, comprising at least an isocyanate component, a polyol component, optionally a catalyst that catalyses the formation of a urethane or isocyanate linkage, blowing agents, wherein the composition comprises polyester-polysiloxane block copolymers.

Composition suitable for the manufacture of polyurethane foams, containing at least one nucleating agent

Procedimiento para la fabricación de espumas de poliuretano o de poliisocianurato que comprende la reacción de (a) una composición (Z1), que contiene (i) una composición (ZP) que contiene por lo menos un poliol y un catalizador, que cataliza la formación de un enlace uretano, -urea o -isocianurato, y (ii) por lo menos un tensioactivo TD, que no exhibe ningún átomo de silicio y exhibe un valor HLB inferior a 6, en la que la fracción de la suma de los tensioactivos TD en la composición es de 0,05 a 10 partes en masa por 100 partes en masa de la composición (ZP), (b) con por lo menos un poliisocianato, en la que la reacción tiene lugar en presencia de un agente de formación de núcleo, elegido de entre el grupo consistente en hidrocarburos perfluorados, éteres que exhiben por lo menos un radical hidrocarburo perfluorado y cetonas que exhiben por lo menos un radical hidrocarburo perfluorado, y un agente propelente, en la que el agente de formación de núcleo es diferente del agente propelente, y en la que se mezclan el agente de formación de núcleo y el agente propelente para obtener una composición (Z2) y la composición (Z2) es añadida a la composición (Z1) antes de la reacción con el por lo menos un poliisocianato. Process for the manufacture of polyurethane or polyisocyanurate foams that comprises the reaction of (a) a composition (Z1), containing (i) a composition (ZP) containing at least one polyol and a catalyst, which catalyzes the formation of a urethane, -urea or -isocyanurate bond, and (ii) at least one TD surfactant, which does not exhibit any silicon atom and exhibits an HLB value less than 6, where the fraction of the sum of TD surfactants in the composition is from 0.05 to 10 parts by mass per 100 parts by mass of the composition (ZP), (b) with at least one polyisocyanate, in which the reaction takes place in the presence of an agent for forming nucleus, selected from the group consisting of perfluorinated hydrocarbons, ethers exhibiting at least one ...

Polymeric materials and also adhesive and coating compositions composed thereof and based on multi-alkoxysilyl-functional prepolymers

Prepolymers having more than one alkoxysilyl function per chain end reactive towards epoxide groups as a constituent of curable compositions, and their use for producing adhesive-bonding and coating compositions, which may also be foamable, and also polymeric materials produced therefrom.

Silicone stabilizers for rigid polyurethane or polyisocyanurate foams

The present invention provides polyether siloxanes of formula (I) which have almost no primary but overwhelmingly secondary or tertiary OH groups, and the use of the inventive polyether siloxanes for production of polyurethane foams and polyisocyanurate foams, and also rigid polyurethane or polyisocyanurate foams obtained using the polyether siloxanes. R1-Si (CH3) 2-O- [-Si (CH3) 2-O-] n- [-Si (CH3) R-O-]m-Si (CH3) 2R2 Formula(I)

Silicone stabilizers for rigid polyurethane or polyisocyanurate foams

The present invention provides polyether siloxanes of formula (I) which have almost no primary but overwhelmingly secondary or tertiary OH groups, and the use of the inventive polyether siloxanes for production of polyurethane foams and polyisocyanurate foams, and also rigid polyurethane or polyisocyanurate foams obtained using the polyether siloxanes. R1-Si (CH3) 2-O- [-Si (CH3) 2-O-] n- [-Si (CH3) R-O-]m-Si (CH3) 2R2 Formula(I)

Silicone stabilizers for flame-retarded rigid polyurethane or polyisocyanurate foams

The invention relates to a process for producing rigid polyurethane or polyisocyanurate foams by reacting an isocyanate with a polyol in the presence of urethane and/or isocyanurate catalysts, water, optionally further blowing agents, optionally flame retardants and optionally further additives (e.g. fillers, emulsifiers, purely organic stabilizers and surfactants, viscosity reducers, dyes, antioxidants, UV stabilizers, antistatics) using foam stabilizers of the general formula (I) R-Si(CH3)2-O-[-Si(CH3)2-O-]n-[-Si(CH3)R- O-]m-Si(CH3)2-R, where R=-(CH2)x-O-(CH2-CHR'-O )y- R".

Siliconstabilizers for flame retardant polyurethane- resp. polyioscyanurate rigid foams

composition which is suitable for the production of polyurethane foams and contains at least one hfo blowing agent

The invention relates to the use of foam stabilizers, produced on the basis of sustainable raw materials, for producing polyurethane foams

The invention relates to the production and use of polyurethane foams using foam stabilizers of the general formula (I).

COMPOSITE MATERIAL COVERING A POLYMERIC MATRIX AND GRANULATED IN IT, PROCESS FOR PREPARING THIS, EMPLOYMENT, AND OBJECT

MATERIAL COMPÓSITO ABRANGENDO UMA MATRIZ POLIMÉRICA E GRANULADOS NELE ASSENTADOS, PROCESSO PARA PREPARAÇÃO DESTE, EMPREGO DO MESMO E OBJETO. A presente invenção refere-se a materiais compósitos abrangendo uma matriz polimérica contendo um ou mais polímeros e granulados assentados na matriz polimérica, que de preferência após o assentamento apresentam pelo menos um espaço vazio fechado e isolado do meio ambeinte, no qual ocorre um vácuo em relação à pressão atmosférica de 1 bar (100 kPa), um processo para preparação dos materiais compósitos correspondentes assim como o seu emprego como material de vedação ou de isolamento. COMPOSITE MATERIAL COVERING A POLYMERIC MATRIX AND GRANULATES SETTING IN IT, PROCESS FOR THE PREPARATION OF THIS, SAME JOB AND OBJECT. The present invention relates to composite materials comprising a polymeric matrix containing one or more polymers and granules settled in the polymeric matrix, which preferably after laying have at least one closed void space isolated from the environment, in which a vacuum occurs in in relation to the atmospheric pressure of 1 bar (100 kPa), a process for preparing the corresponding composite materials as well as its use as a sealing or insulation material.

Trimerisierungskatalysatoren

Polyurethane insulating foams and production thereof

Verfahren zur herstellung von verzweigten polyorganosiloxanen

Production of polyurethane foam

Composition for producing polyurethane foam, in particular rigid polyurethane foam, comprising at least an isocyanate component, a polyol component, optionally a catalyst that catalyses the formation of a urethane or isocyanate linkage, blowing agents, wherein the composition comprises polyester-polysiloxane block copolymers.

Herstellung von flammwidrigem polyurethanschaum

Zusammensetzung zur Herstellung von PU-Schaum, vorzugsweise PU-Hartschaum, umfassend ̵ mindestens ein halogenfreies Polyesterpolyol und mindestens ein halogeniertes Polyol, ̵ mindestens ein physikalisches Treibmittel, ̵ mindestens ein Flammschutzmittel, ausgewählt aus (a) der Gruppe der Phosphorsäureester, vorzugsweise TCPP, TEP und/oder TCEP, insbesondere TCPP und/oder TEP, und/oder (b) der Gruppe der Phosphonate, vorzugsweise DMMP und/oder DMPP, ̵ roter Phosphor, sowie mindestens eine Polyisocyanat-Komponente, wobei die Zusammensetzung einen Index von mindestens 200 aufweist.

Herstellung von polyurethanschaum

Zusammensetzung zur Herstellung von Polyurethanschaum, insbesondere Polyurethanhartschaum, umfassend zumindest eine Isocyanat-Komponente, eine Polyolkomponente, optional einen Katalysator, der die Ausbildung einer Urethan- oder Isocyanurat-Bindung katalysiert, Treibmittel, wobei die Zusammensetzung Polyester-Polysiloxan-Blockcopolymere umfasst.

Die erfindung betrifft die verwendung von schaumstabilisatoren, die auf basis nachwachsender rohstoffe hergestellt werden, zur herstellung von polyurethanschäumen

Die erfindung betrifft die verwendung von schaumstabilisatoren, die auf basis nachwachsender rohstoffe hergestellt werden, zur herstellung von polyurethanschäumen

Espuma de poliuretano, seu processo de produção e uso, processo para a redução da condutibilidade térmica de espumas de poliuretano e uso de copolímeros de poliéter-siloxano da fórmula i para a produção de espumas de poliuretano

A presente invenção se refere a um processo para a produção de espuma de poliuretano através da reação de pelo menos um componente poliol com pelo menos um componente isocianato na presença de pelo menos um agente de expansão e um ou mais catalisadores, que catalisam as reações de isocianato-poliol e/ou isocianato-água e/ou a trimerização de isocianato, sendo que a reação é realizada na presença de copolímeros de poliéter-siloxano permutados.

Procedimiento para la preparación de poliéter-siloxanos, preferiblemente de baja viscosidad

Un procedimiento para la preparación de poliéter-siloxanos, caracterizado por que se hacen reaccionar entre sí a) un o varios poliéteres insaturados con b) uno o varios siloxanos que tienen la funcionalidad SiH en presencia de c) compuestos de Pt(0) y de d) una o varias aminas terciarias de la Fórmula general 1**Fórmula** con R1 >= R2 o, independientemente uno de otro, H o un radical alquilo con 2 hasta 14 átomos de carbono, R2 >= radicales alquilo con 1 hasta 14 átomos de carbono que llevan por lo menos un grupo OH.

Verfahren zur herstellung von polyethersiloxanen

Die Erfindung betrifft Verfahren zur Herstellung von Polyethersiloxanen bei welchen ungesättigte Polyether mit einem oder mehreren SiH-funktionellen Siloxanen in Gegenwart von Pt(0)-Verbindungen und tertiären Aminen umgesetzt werden. Die Erfindung betrifft weiterhin die Verwendung von Pt(0)-Verbindungen und tertiären Aminen zur Herstellung von Polyethersiloxanen und die Verwendung der so gewonnenen Polyethersiloxane.

Siliconstabilisatoren für flammgeschützte polyurethan- bzw. polyisocyanurat- hartschaumstoffe

Production of polyurethane foam

Compositions for producing a rigid polyurethane foam are described, comprising at least one isocyanate component, a polyol component, optionally a catalyst which catalyzes the formation of a urethane or isocyanurate bond, wherein the composition has hydrocarbons having 3, 4 or 5 carbon atoms, hydrofluorocarbons, hydrofluoroolefins (HFO), hydrohaloolefins, oxygen-containing blowing agents and/or chlorohydrocarbons as blowing agent, and also comprises acrylate and/or methacrylate copolymers as foam stabilizers.