Flame retardants suitable for use in viscoelastic polyurethane foams

The present invention relates to viscoelastic polyurethane foam formulations, viscoelastic polyurethane foams formed from such formulations, and products formed from the viscoelastic polyurethane foams.

Fixing of vacuum insulation panels in cooling apparatuses

A polyurethane foam reaction system to fix over an area of a vacuum insulation panel (VIP) on an inside of an outer wall of a cooling apparatus and/or on a outside of a wall of a inner container of the cooling apparatus, where the reaction system includes the following components: an organic and/or a modified organic polyisocyanate; at least one high molecular weight compound having at least two hydrogen atoms which are reactive toward a isocyanate group; a blowing agent; a catalyst; and a foam stabilizer, where the components are selected to obtain a closed-cell polyurethane foam having a free-foamed density of 50 to 1100 g/l and a compressive strength of ≧15 kPa, excluding rigid integral foams.

Process for the production of isocyanates, preferably diisocyanates and polyisocyanates with solvent recirculation

The present invention relates to a process for the production of isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), by reacting an amine with phosgene in the liquid phase or in the gas phase to form the corresponding isocyanates, subsequent removal of the solvent in at least two steps to obtain at least two solvent streams, individual treatment of the at least two solvent streams, and re-circulation of at least a portion of the solvent streams.

Method of synthesizing tuneably high functionality in high molecular weight natural oil polyols

Methods of one-pot synthesis of high molecular weight natural oil polyols having a functionality of between about 4 and about 8 are provided. The resultant polyols may be directly reacted with polyisocyanates to produce polyurethanes.

Branched poly(trimethylene ether) polyols

Disclosed is branched poly(trimethylene ether)polyols prepared from the acid catalyzed polycondensation reaction of 1,3-propanediol, and at least one triol comonomer selected from 1,1,1-tris(hydroxymethyl)ethane and 1,1,1-tris(hydroxymethyl)propane. Also disclosed is a branched poly(trimethylene ether)polyol with an equivalent hydroxyl functionality of about 2.1 to about 3.2 and a M n of about 200 to about 6000. The polyols are useful in the preparation of polyurethane rigid and flexible foams.

Light weight composite structural support material having natural oil and polyol foam bonded directly between substrates

A composite substrate includes first and second substrate layers with a polyurethane foam layer there between. The foam layer preferably penetrates into the first and second substrate layers to form very strong bonds without the need for intervening adhesives. A component of the foam material formulation is natural oil. The resultant composite substrate thereby has excellent load-bearing properties. It can also be manufactured with lower cost capital equipment and a reduced impact on the environment relative to substrates using more conventional foam formulations and bonding processes.

Strength-improving agent for production of polyurethane foam

Provided is a strength-improving agent for the production of polyurethane foam, said agent enabling the production of a polyurethane foam having high tensile strength, tear strength and compressive strength. A strength-improving agent (A) for the production of polyurethane foam, represented by general formula (I) [wherein each R1 is a residue derived from an active-hydrogen containing compound by the removal of one active hydrogen atom, and multiple R1s may be the same or different; Y is a residue derived from an at least trivalent aromatic polycarboxylic acid (C) by the removal of the carboxyl groups; the aromatic ring of Y is composed of carbon atoms; the substituents on the aromatic ring maybe hydrogen or other groups, with the proviso that at least one of the substituents is hydrogen; a is an integer satisfying the relationship: 2≦a≦[(the number of substituents on the aromatic ring)−2]; Z is a residue derived from an at least m-valent active-hydrogen containing compound by the removal of m active hydrogen atoms; some R1s and Z may be the same, with the proviso that at least one R1 is different from Z; and m is an integer of 1 to 10].

Fire resistant foam insulation compositions

This invention relates to polyurethane foam insulation materials comprising cenospheres, a coal combustion waste by-product, a poly-isocyanate and petroleum and/or vegetable based polyols and/or post-industrial or post-consumer recycled polyester to produce polymeric foam insulation products useful in building materials and component products. The percentage of industrial waste product, recycled materials and sustainable vegetable based components used in the formulations support make this a “green” composition.

Polyurethane foam for seat pad

Polyurethane foam for a seat pad that achieves both reduced shakiness and reduced stress relaxation and is suitable particularly for a vehicle seat pad is provided, and the polyurethane foam contains a foaming liquid containing (A) a polyol component, (B) a polyisocyanate component, (C) water and (D) a catalyst, which has been foam-molded, wherein the polyol component (A) contains from to 50% by mass of (a-1) a polyether polyol having a molar ratio of repeating units derived from ethylene oxide and propylene oxide of from 5/95 to 25/75 and a number average molecular weight of from 6,000 to 8,000, and containing from 5 to 15% by mass of (a-2) a polyether polyol having a molar ratio of repeating units derived from ethylene oxide and propylene oxide of from 0/100 to 20/80 and a number average molecular weight of from 600 to 2,000, and an amount of water (C) contained is 2.0 parts by mass or more per 100 parts by mass of the polyol component (A).

Aqueous cold-cure flexible stabilizer formulations

Aqueous cold-cure flexible foam stabilizer including the following components: a) from ≧0.1 to ≦80% by weight of at least one water-insoluble polysiloxane compound having a molecular weight of from ≧300 g/mol to ≦10 000 g/mol, b) ≧2% by weight of water, c) ≧0.1% by weight of surfactant, d) from ≧0 to 10% by weight of additives selected from the group consisting of thickeners, antifreezes, organic solvents and biocides, e) ≧0% by weight of water-soluble siloxane(s), with the proportion by weight of the abovementioned components being selected so that the sum of the proportions by weight of the components is not more than 100% by weight, based on the aqueous cold-cure flexible foam stabilizer formulation.

Isocyanate-terminated prepolymer, the method for preparing the same and the use thereof

The present invention pertains to the field of polyurethane, especially relates to an isocyanate-terminated prepolymer, the method for preparing the same and the use thereof. The present invention adjusts the reaction components and the ratios thereof to obtain an isocyanate-terminated prepolymer suitable for preparing flexible polyurethane foam under a relative low mold temperature. The method for preparing flexible polyurethane foam by using the isocyanate-terminated prepolymer provided in this present invention can reduce the mold temperature, production time and energy consumption, as well as to obtain a polyurethane flexible foam processing good physical and mechanical properties.

Foamable composition for polyurethane foam and polyurethane foam

A foamable composition for polyurethane foam is provided which advantageously improves heat insulating properties, a long-term stability, and a dimensional stability of a polyurethane foam that is produced by using carbon dioxide as a blowing agent. Further, a polyurethane foam which has excellent heat insulating properties is provided by foaming and curing the foamable composition for polyurethane. In the production of the polyurethane foam in which carbon dioxide is used in the foaming, a polyol component is used which includes a phenolic resin polyol that is obtained by adding at least one alkylene oxide to a phenolic novolak resin, and an aromatic amine polyol that is obtained by adding at least one alkylene oxide to an aromatic diamine such that the total amount thereof is 60% or more by mass, based on the total polyol component.

Nontemperature sensitive memory foam of mdi system suitable for horizontal foaming process

A MDI system non-temperature sensitive memory sponge suitable for flat foam foaming process, is made by mainly using polyether polyol and polymer polyol as main material, then adding three additives isocyanate and foaming agent, the pore adjusting agent and catalyst. The polyether polyol is polyoxypropylene glycerol with molecular weight of 700, the polymer polyol is high activity grafting polyether, the isocyanate is modified polyphenyl methane diisocyanate, wherein a polyoxypropylene trihydroxy ether with the molecular weight of 4800 is added to the polyether polyol, polyol chain extender is added to said additives.

Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups

The present invention relates to a process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups. It furthermore relates to polyricinoleic acid ester polyols obtainable according to the invention and polyurethane polymers prepared using these polyols. The process comprises the steps: a) polycondensation of ricinoleic acid until a hydroxyl number of >0 mg of KOH/g to <60 mg of KOH/g is reached; and b) reaction of the product obtained in step a) or of a secondary product of the product obtained in step a) comprising carboxyl groups with an epoxide of the general formula (I), wherein R1 represents hydrogen, an alkyl radical or an aryl radical, with the proviso that >80% by weight to <100% by weight, based on the total amount of the epoxide (I) employed, is ethylene oxide and the reaction is carried out in the presence of an amine as the catalyst.

Polishing pad and manufacturing method therefor

Provided are a polishing pad which remedies the problem of scratches occurring when a conventional hard (dry) polishing pad is used, which is excellent in polishing rate and polishing uniformity, and which can be used for not only primary polishing but also finish polishing, and a manufacturing method therefor. The polishing pad is a polishing pad for polishing a semiconductor device, comprising a polishing layer having a polyurethane-polyurea resin foam containing substantially spherical cells, wherein the polyurethane-polyurea resin foam has a hard segment content (HSC) in a range from 26 to 34%, and has a density D in a range from 0.30 to 0.60 g/cm 3 , the hard segment content (HSC) being determined by the following formula (1): HSC=100×( r −1)×( Mdi+Mda )÷( Mg+r×Mdi +( r −1)× Mda )  (1).

Impact absorbing foam

This invention relates to impact absorbing foams. These foams comprise a polymeric foam and ceramic particulates dispersing the foam. These foams have numerous uses, including, for example, as interior pads for football helmets, and the like, for reducing head injuries.

Use of metal salts of a carboxylic acid in the production of polyurethane systems

A catalyst system which is suitable for catalyzing the production of polyurethane systems is provided. The catalyst system contains a metal salt of a carboxylic acid to whose carbonyl carbon a hydrogen atom or a hydrocarbon radical is bound, with the proviso that the carboxylic acid does not have exclusively a single ethyl or n-propyl branch in the 2 position.

Polyurethanes

A process for making a flame retardant polyurethane foam, the process comprising reacting a PO based polyol with foam-forming reactants to provide said polyurethane foam, wherein said polyol is prepared by ring-opening polymerization of alkylene oxide in the presence of a composite metal cyanide complex catalyst, and wherein said polyol is either free from EO moieties or comprises EO moieties in an amount of at most 1% w/w.

HYDROPHILIC POLYURETHANE FOAM FOR WATER RETENTION APPLICATIONS

Hydrophilic polyurethane foam is made from a diphenylmethane-based quasi-prepolymer having specified isocyanate and oxyethylene contents. The foams have an unusually good capacity for retaining water even when under compressive forces. They also exhibit at most moderate swelling when saturated with water. The foam is useful as a layer of a water containment system such as a green roof or blue roof system. 1. A hydrophilic polyurethane foam which is the reaction product of a reaction mixture that comprises:a) water,b) a quasi-prepolymer, which quasi-prepolymer has an isocyanate content of 5 to 15% by weight and contains 55 to 75 weight percent of oxyethylene units based on the weight of the quasi-prepolymer, which quasi-prepolymer is a reaction product of 1) a hydroxyl-terminated polymer of ethylene oxide or mixture of two or more thereof, wherein the hydroxyl-terminated polymer of ethylene oxide or mixture thereof has an average oxyethylene content of at least 90 weight percent, based on the weight of the hydroxyl-terminated polymer of ethylene oxide or mixture thereof, has a number average nominal hydroxyl functionality of 2 to 2.5 and has a number average hydroxyl equivalent weight of at least 350, with ii) an excess of an organic polyisocyanate that includes at least 80 weight percent diphenylmethane diisocyanate of which diphenylmethane diisocyanate at least 60 weight percent is 4,4′-diphenylmethane diisocyanate, wherein component b) is present in an amount sufficient to provide an isocyanate index of 0.5 to 50; andc) one or more surfactants.2. The hydrophilic polyurethane foam of wherein the hydroxyl-terminated polymer of ethylene oxide or mixture of two or more thereof includes at least one ethylene oxide homopolymer.3. The hydrophilic polyurethane foam of wherein the hydroxyl-terminated polymer of ethylene oxide or mixture of two or more thereof includes at least one random or block copolymer of ethylene oxide and 1 claim 2 ,2-propylene oxide which contains ...

Composition

The present invention provides a stabilising composition, comprising:a) a first phenolic antioxidant comprising one or more phenolic compounds having the structure of formula (I): wherein R1 is a linear or branched alkyl group having from 12 to 20 carbon atoms; andb) one or more second phenolic antioxidants independently selected from: a mono-hydroxybenzene having lower steric hindrance than the first phenolic antioxidant; a di-hydroxybenzene; and/or a tri-hydroxybenzene.

COMPOSITION

The present invention provides a stabilising composition, comprising: 2. The stabilizing composition of claim 1 , wherein the one or more second phenolic antioxidants are selected from the group consisting of:a di-hydroxybenzene selected from the group consisting of 4-tert-butylcatechol, 2,5-di-tert-amyl-hydroquinone, benzene-1,2-diol, and benzene-1,3-diol;a tri-hydroxybenzene selected from the group consisting of benzene-1,2,3-triol, propyl 3,4,5-trihydroxybenzoate; and benzene-1,2,4-triol; anda dimer or oligomer of mono-hydroxybenzene monomers selected from the group consisting of 4,4′-butylidenebis[2-t-butyl-5-methylphenol], and phenol, 4-methyl-, reaction products with dicyclopentadiene and isobutylene.3. The stabilizing composition of claim 1 , wherein the one or more of the second phenolic antioxidants are selected from the group consisting of 4-tert-butylcatechol claim 1 , 2 claim 1 ,5-di-tert-amyl-hydroquinone claim 1 , benzene-1 claim 1 ,2-diol claim 1 , benzene-1 claim 1 ,3-diol claim 1 , and benzene-1 claim 1 ,4-diol.4. The stabilizing composition of claim 3 , wherein one of the second phenolic antioxidants is 4-tert-butylcatechol.5. The stabilizing composition of claim 1 , wherein the one or more second phenolic antioxidants is present in an amount of from about 1 to about 50 wt. % claim 1 , based on the total weight of the stabilizing composition.6. The stabilizing composition of claim 1 , wherein the one or more second phenolic antioxidants are present in the stabilizing composition in an amount of from about 1 to about 35 wt. % claim 1 , based on the total weight of the stabilizing composition.7. The stabilizing composition of claim 1 , wherein the one or more second phenolic antioxidants are present in the stabilizing composition in an amount of from about 5 to about 30 wt. % claim 1 , based on the total weight of the stabilizing composition.8. The stabilizing composition of claim 1 , wherein the one or more second phenolic antioxidants are present ...

Method for Making Skinned Polyurethane Composites

Skinned composites contain a plasticized polymer skin layer adhered to a layer of a polyurethane. The polyurethane is made from a reaction mixture that contains specified amounts of a polyester polyol and an acidic material. The presence of both the polyester polyol and acid leads to significantly improved adhesion between the polyurethane and skin layer. The invention is particularly useful when the skin is highly plasticized.

Polymeric phenolic antioxidants

A phenol compound comprises a phenyl group, a hydroxy group directly bonded to the phenyl group, and at least one polymeric substituent bound to the phenyl group. The polymeric substituent comprises three or more monomers units. A method for producing a polyurethane polymer comprises the steps of (a) providing a polyol; (b) providing a polyisocyanate compound; (c) providing the phenol compound described above; (d) combining the polyol, the polyisocyanate compound, and the phenol compound to produce a reaction mixture; and (e) allowing the polyol and the polyisocyanate compound to react to produce a polyurethane polymer.

Viscoelastic flexible polyurethane foams based on polyether carbonate polyols

The present invention relates to a method for the production of viscoelastic polyurethane foams by reacting an isocyanate component with a component which is reactive towards isocyanates, comprising ≧50 to ≦100 weight parts of at least one polyether carbonate polyol with a hydroxyl number according to DIN 53240 of ≧150 mg KOH/g to ≦300 mg KOH/g. The invention also relates to polyurethane foams produced by the method of the invention and their use.

Method for preparing a coffee polyol and compositions and materials containing the same

A method for preparing a coffee polyol includes: (a) extracting coffee oil from coffee grounds; (b) modifying the coffee oil to obtain an epoxidized coffee oil; and (c) reacting an alcohol with the epoxidized coffee oil to obtain a coffee polyol. A polyurethane dispersive solution is prepared from a prepolymer composition that includes: a coffee polyol prepared from the abovementioned method; an isocyanate; and a solvent. A foam-based material is made from a foaming composition that includes a coffee polyol prepared from the abovementioned method. A polyurethane material is made from a polyurethane composition that includes a coffee polyol prepared from the abovementioned method.

Hybrid foam formulations

Embodiments of the present disclosure are directed towards hybrid foam formulations that include: an isocyanate-reactive composition, and a high-functionality crosslinker; an azo type radical initiator; and an isocyanate.

FLEXIBLE POLYURETHANE FOAMS HAVING IMPROVED LONG-TERM PERFORMANCE CHARACTERISTICS

The present invention relates to polyol mixtures comprising (b1) at least one polyether polyol having a hydroxyl value of 10 to 60 mg KOH/g and having a high proportion of ethylene oxide, (b2) at least one polyether polyol having a hydroxyl value of 10 to 100 mg KOH/g, a low proportion of ethylene oxide, and not less than 40% primary OH groups, and (b3) at least one polyether polyol having a hydroxyl value of 10 to 100 mg KOH/g, a low proportion of ethylene oxide, and not more than 30% primary OH groups, and b5) from 0.25 to 10 further parts by weight of polyurea, based on 100 parts by weight of components b1) to b3), optionally present as a constituent of a dispersion polyol based on one or more of components b1) to b3).

High strength polyurethane foam compositions and methods

Disclosed are high strength polyurethane foam compositions and methods of making them. In one aspect, the inventive polyurethane foams include strength enhancing additives comprising one or more polycarbonate polyols derived from the copolymerization of CO 2 and one or more epoxides. In one aspect, the inventive methods include the step of substituting a portion of the polyether polyol in the B-side of a foam formulation with one or more polycarbonate polyols derived from the copolymerization of CO 2 and one or more epoxides.

PROCESS FOR PRODUCING A LOW DENSITY FREE-RISE POLYURETHANE FOAM

There is described a process for producing a free-rise polyurethane foam having a density of less than or equal to about 0.75 pcf. the process comprises the steps of: (a) contacting: (i) an isocyanate, (ii) a first polyol comprising a first polymer chain consisting essentially of propylene oxide units and alkylene oxide units selected from ethylene oxide, butylene oxide and mixtures thereof in a weight ratio of propylene oxide units to alkylene oxide units in the range of from about 90:10 to about 25:75, the polymer chain being terminally capped with the ethylene oxide units, the first polyol having a primary hydroxyl content of at least about 70% based on the total hydroxyl content of the first polyol, (iii) water (iv) a surfactant and (v) a catalyst to form a foamable reaction mixture; and (b) expanding the foamable reaction mixture to produce the free-rise polyurethane foam. 147-. (canceled)48. A free-rise polyurethane foam produced by a process for producing a free-rise polyurethane foam having a density of less than or equal to about 0.75 pcf , the process comprising the steps of:(a) contacting: (i) an isocyanate, (ii) a first polyol comprising a first polymer chain consisting essentially of propylene oxide units and alkylene oxide units selected from ethylene oxide, butylene oxide and mixtures thereof in a weight ratio of propylene oxide units to alkylene oxide units in the range of from about 90:10 to about 25:75, the polymer chain being terminally capped with the ethylene oxide units, the first polyol having a primary hydroxyl content of at least about 70% based on the total hydroxyl content of the first polyol, (iii) water (iv) a surfactant and (v) a catalyst to form a foamable reaction mixture; and(b) expanding the foamable reaction mixture to produce the free-rise polyurethane foam.49. A free-rise flexibile polyurethane foam: (i) having a density less than or equal to about 0.75 pcf , (ii) having a low exotherm during production , and (iii) being ...

Reaction Mixture Suitable for Manufacturing of Foam with Reduced Aldehyde Emission

Disclosed is a reaction mixture for the manufacturing of a polyurethane foam, which mixture can be obtained by reacting a polyfunctional isocyanate with an isocyanate-reactive compound, in the presence of a scavenger and at least one catalyst; and curing such reaction mixture enables providing a foam with reduced aldehyde emissions particularly useful in means of transport, such as interior part of cars. 2. The reaction mixture according to claim 1 , wherein said scavenger predominantly contains said compound with formula (I) claim 1 , when added to the reaction mixture in aqueous condition.3. The reaction mixture according to claim 1 , wherein said scavenger is added to the reaction mixture at a temperature ranging from 18 to 45° C.4. The reaction mixture according to claim 1 , wherein R1 is —OR3.5. The reaction mixture according to claim 1 , wherein said scavenger is made of at least 90 wt % of said compound of formula (I) based on the total weight of said scavenger.6. The reaction mixture according to claim 1 , wherein Rand Rare linked to each other to form a 5 to 12 membered ring structure and comprise unsaturations claim 1 , aromatic rings and/or heteroatoms.7. The reaction mixture according to claim 1 , wherein said scavenger has a molecular weight of at most 3000 g/mol.8. The reaction mixture according to claim 1 , wherein the reaction mixture further comprises a blowing agent.9. The reaction mixture according to claim 1 , wherein the polyfunctional isocyanate is selected from a polymeric methylene diphenyl diisocyanate claim 1 , a methylene diphenyl diisocyanate isomer mixture claim 1 , or a mixtures thereof.10. The reaction mixture according to claim 1 , wherein the isocyanate-reactive compound is a polyfunctional polyol or a polyfunctional amine.12. The process according to claim 11 , wherein said scavenger predominantly contains said compound with formula (I) claim 11 , when added to the reaction mixture in aqueous condition.13. The process according to ...

Inherent flame retardant rigid polyurethane foam

The present invention provides a kind of inherent flame retardant rigid polyurethane foam. The production formula comprises 100 to 105 pbw of polyether polyol and reactive phosphorus-containing flame retardant, 2.5 to 3.5 pbw of amine catalyst, 0.8 to 2.5 pbw of tertiary amine catalyst, 0.8 to 2.5 pbw of foam stabilizer, 0.5 to 1.5 pbw of blowing agent, 135 to 150 pbw of isocyanates, and 0.05 to 0.1 pbw of organo-metallic catalyst, wherein the reactive phosphorus-containing flame retardant is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-4-hydroxybenzyl alcohol. The active monomers containing flame retarding elements are introduced into main chain and side chain of PU for modification, which permanently improves the flame retardancy of PU without obvious effect on other performance of PU matrix.

Conductive foam roll

Provided is a conductive foam roll having a high surface opening ratio that achieves both cleaning performance and low resistance. A conductive foam roll 10 includes a shaft body 12 and a conductive foam layer 14 around the shaft body 12 , wherein the conductive foam layer 14 has a surface opening ratio of 50% to 90%, and wherein the conductive foam layer 14 contains an ionic conductive agent that contains salt of diallyl-type ammonium cations, and at least one selected from the group consisting of N,N-bis(trifluoromethanesulfonyl)imide anions, and N,N-bis(fluorosulfonyl)imide anions.

Closed-Loop Recycled Polyurethane Foam, Methods Of Manufacture and Products Therefrom

The present disclosure relates to the production of molded products containing recycled content, and more particularly polyurethane foam which includes polyol recovered from chemical recycling of polyurethane foam scrap, which polyol has been treated to optimize viscosity and/or reactivity characteristics.

Energy absorbing foam material and method of using thereof

The present invention provides an energy absorbing foam material includes at least one shape memory polymer foam having a non-impact resistant configuration in a first force-application time, an impact resistant configuration in a second force-application time at a working temperature, a first glass transition temperature equal to or lower than a working temperature in the first force-application time, and a second glass transition temperature higher than a working temperature in the second force-application time. A second elastic modulus of the shape memory polymer foam in the second force-application time is at least 10 times than a first elastic modulus of the shape memory polymer form in the first force-application time at the working temperature.

Semi-flexible foam formulations

Embodiments of the present disclosure are directed towards semi-flexible foam formulations that can be utilized to form semi-flexible foams. As an example, a semiflexible foam formulation can include a first polyether polyol having an average nominal hydroxyl functionality from 2 to 4 and a number average equivalent weight from 120 to 1500, a second polyether polyol having a having an average nominal hydroxyl functionality from 4 to 8 and a number average equivalent weight from 120 to 800, and a third polyether polyol having an average nominal hydroxyl functionality from 2 to 4 a number average equivalent weight from 200 to 500 and toluene diisocyanate.

Methods and systems for producing a bio-based cosmetic sponge and blender

Systems, devices, and methods for a cosmetic sponge comprising: a prepolymer material and a bio-based material, where the prepolymer material and the bio-based material are reacted with an additive component comprising water and bio-based material dissolved in the water.

Novel compositions for polyurethane applications

A process comprising, consisting of, or consisting essentially of: foaming a reaction mixture containing at least one polyisocyanate and an isocyanate-reactive compound comprising at least one alkoxylated triazine-arylhydroxy-aldehyde condensate composition wherein the alkoxylated triazine-arylhydroxy-aldehyde condensate composition is a reaction product of a triazine-arylhydroxy-aldehyde condensate and at least one alkylene carbonate, is disclosed.

Automotive seat made from epoxidized soy oil

A composition for forming polyurethane foams is provided using epoxidized triglycerides with unopened rings. The composition further includes a polyol, a blowing agent, and a catalyst that catalyzes the reaction of polyols with isocyanates to form polyurethanes. The polyol is a polyoxyalklylene and the epoxidized triglyceride is an epoxidized soybean oil. A method for forming polyurethane foam using the aforementioned composition is also provided.

SURFACTANT-FREE FILLED POLYURETHANE FOAM AND METHOD OF MAKING SAME

Polyurethane foams and methods of manufacturing are described herein. The foam can include (a) a polyurethane formed by the reaction of (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, and (ii) one or more polyols; and (b) a filler. The amount of filler in the foam can be from 50 to 90% by weight, based on the total weight of the foam. The filler can include a plurality of fibers and/or a particulate filler. The polyurethane foams described herein are made without adding a surfactant to the reaction mixture. The density of the polyurethane foam can be at least 5 lb/ft. 158-. (canceled)59. A filled polyurethane foam comprising:polyurethane; andfrom 50% to 80% by weight, based on a total weight of the filled polyurethane foam, of an inorganic particulate filler comprising calcium carbonate;{'sup': 3', '3', '3', '3, 'wherein the filled polyurethane foam has a flexural strength ranging from 400 psi to 1400 psi, a density ranging from 10 lb/ft, to 35 lb/ft, or both a flexural strength ranging from 400 psi to 1400 psi, a density ranging from 10 lb/ft, to 35 lb/ft.'}60. The filled polyurethane foam of claim 59 , wherein the filled polyurethane foam further comprises from 3% to 5% by weight of a plurality of fibers claim 59 , based on the total weight of the filled polyurethane foam.61. The filled polyurethane foam of claim 60 , wherein the plurality of fibers includes a glass fibers claim 60 , polyalkylene fibers claim 60 , polyester fibers claim 60 , polyamide fibers claim 60 , phenol-formaldehyde fibers claim 60 , polyvinyl chloride fibers claim 60 , polyacrylic fibers claim 60 , acrylic polyester fibers claim 60 , polyurethane fibers claim 60 , polyacrylonitrile fibers claim 60 , rayon fibers claim 60 , cellulose fibers claim 60 , carbon fibers claim 60 , metal and metal-coated fibers claim 60 , mineral fibers claim 60 , or combinations thereof.62. The filled polyurethane foam of claim 60 , wherein ...

Vegetable Oil Polyol for Flexible Polyurethane Foam and Preparation Method and Application Thereof

A vegetable oil polyol for flexible polyurethane foam, a preparation method and application thereof. The method includes the following steps: (1) subjecting an epoxidized vegetable oil, a benzoylformic acid, a basic catalyst, and an inert solvent to a ring-opening reaction in a first microchannel reactor of a microchannel reaction device to obtain a vegetable oil polyol; and (2) subjecting the vegetable oil polyol obtained in the step (1), a propylene oxide and an inert solvent to an addition polymerization reaction in a second microchannel reactor of the microchannel reaction device to obtain the vegetable oil polyol for flexible polyurethane foam.

Inhibition of amine oxidation

In an embodiment, an amine-oxidation inhibitor, such as a free radical scavenger and/or antioxidant, is added to an oxidation-sensitive amine, such as an amine catalyst, to inhibit oxidation of the amine. The inhibitor-treated amine may then be used in an application such as a polyurethane application to reduce the emission of undesired oxidation products from the polyurethane.

ISOCYANATE-BASED FOAM AND PROCESS FOR PRODUCTION THEREOF

There is described an isocyanate-based polymer foam having the combination of: (i) a Limiting Oxygen Index (LOI) of greater than or equal to 26.5% when measured pursuant to ASTM D2863-17a, and (ii) a Total Volatile Organic Content (TVOC) when measured pursuant to VDA 277 of less than or equal to 225 μg/g C. Preferably, the foam is produced from a foamable composition comprising: an isocyanate; a reactive compound containing: (1) at least one hydrogen which is reactive with the isocyanate, and (2) one or both of a halogen and a phosphate moiety; a blowing agent comprising one or both of water and carbon dioxide; and a catalyst; wherein the reactive compound is present in an amount in the range of from about 30% to about 95% of total ISO equivalents excluding water, if present in the foamable composition. 1. An isocyanate-based polymer foam having the combination of: (i) a Limiting Oxygen Index (LOI) of greater than or equal to 26.5% when measured pursuant to ASTM D2863-17a , and (ii) a Total Volatile Organic Content (TVOC) when measured pursuant to VDA 277 of less than or equal to 225 μg/g C.2. The isocyanate-based polymer foam defined in claim 1 , having a LOI in the range of from 26.5% to 35.0%.3. (canceled)4. The isocyanate-based polymer foam defined in claim 1 , having a LOI in the range of from 27.0% to 34.0%.5. (canceled)6. The isocyanate-based polymer foam defined in claim 1 , having a LOI in the range of from 27.0% to 32.0%.7. (canceled)8. The isocyanate-based polymer foam defined in claim 1 , having a LOI in the range of from 27.0% to 31.0%.9. (canceled)10. The isocyanate-based polymer foam defined in claim 1 , having a LOI in the range of from 27.5% to 30.0%.11. The isocyanate-based polymer foam defined in claim 1 , having a LOI in the range of from 28.0% to 30.0%.12. The isocyanate-based polymer foam defined in claim 1 , having a TVOC in the range of from 50 to 225 μg/g C.13. The isocyanate-based polymer foam defined in claim 1 , having a TVOC in the range ...

Preparation method and application of reactive polyurethane flame retardant

The polyurethane flame retardant is prepared by compounding poly(diphosphophosphazene) (PDPP) and derivatives thereof, poly(diphosphate phosphazene) (MPDPP) (where M=Mg 2+ , Ca 2+ , transition metal ions, rare earth ions and the like) and poly(diphosphonic phosphazene). Since a phosphate group in the PDPP and an unreacted phosphate group in the MPDPP in the compound and an unreacted hydroxyl in the phosphate group may react with isocyanate, the flame retardant is a reactive flame retardant. Due to the reaction between the flame retardant and the isocyanate, the flame retardant is uniformly distributed in polyurethane and has a better flame-retardant effect. The flame retardant contains multiple flame-retardant components, namely polyphosphazene group, phosphate ester and phosphate salt. Due to the synergistic effect, the flame retardant has good flame-retardant properties, and can be used for various polyurethane materials.

METHODS FOR REDUCING ALDEHYDE EMISSIONS IN POLYURETHANE FOAMS

Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one acetoacetate ester or amide and at least one aminoalcohol or alkylhydroxylamine. Foams so produced emit low levels of formaldehyde, acetaldehyde and propionaldehyde. 1. A process for producing a polyurethane foam comprising forming a reaction mixture that contains an aromatic polyisocyanate , at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group , at least one blowing agent , at least one surfactant and at least one catalyst , and curing the reaction mixture in the presence of (i) at least one acetoacetate ester or amide and (ii) at least one aminoalcohol and/or alkylhydroxylamine to form the polyurethane foam.2. A method for reducing aldehyde emissions from a polyurethane foam , comprising: a) combining (i) at least one acetoacetate ester or amide and , (ii) at least one aminoalcohol and/or alkylhydroxylamine with at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group to form a mixture and then b) combining the mixture from step a) with at least one organic polyisocyanate and curing the resulting reaction mixture in the presence of at least one blowing agent , at least one surfactant and at least one catalyst to form a polyurethane foam.The process of wherein the acetoacetate ester or amide is one or more of trimethylolpropane mono- claim 1 , di or triacetoacetate ester claim 1 , trimethylolethane mono- di- or tri acetoacetate ester claim 1 , trimethoxymethane mono- claim 1 , di- or triacetoacetate ester; ethylene ...

Process for the production of high air flow polyether foams and the foams produced by this process

This invention relates to novel polyol blends, a process for the production of foam with very low resistance to air flow from certain polyol blends and to the resultant foams produced from certain polyol blends. The polyol blends comprise one or more monofunctional polyethers having a hydroxyl number of less than 28; one or more polyether polyols having a hydroxyl number of 20 to 240 and containing at least 50% of copolymerized oxyethylene; one or more polyether polyols having a hydroxyl number of 47 to 300 and containing from 5 to 40% of copolymerized oxyethylene; and optionally, one or more polyether polyols having a hydroxyl number of 10 to 45. This process of the invention comprises reacting one or more polyisocyanates, with an isocyanate-reactive component in the presence of at least one catalyst, at least one surfactant and at least one blowing agent. The isocyanate-reactive component comprises one or more monofunctional polyethers having a low hydroxyl number; one or more polyether polyols having a hydroxyl number of 20 to 240 and containing at least 50% of copolymerized oxyethylene; one or more polyether polyols having a hydroxyl number of 47 to 300 and containing from 5 to 40% of copolymerized oxyethylene; and optionally, one or more polyether polyols having a hydroxyl number of 10 to 45.

Pest-resistant spray foam formulations

Pest-resistant polyurethane spray foam formulations and products, including building insulation, are described. The “B” side of the formulation comprises water; a polyol composition comprising one or more polyols selected from glycerin-sucrose polyols, Mannich polyols, and aromatic polyester polyols, catalyst(s); surfactant(s); a blowing agent; and 0.5 to 5 wt.%, based on the amount of spray foam formulation, of a composition comprising a capsaicin compound. Capsaicin compounds can be successfully incorporated into spray foam formulations that process well to give high- quality foams. The foams inhibit termite infestation and can help to minimize or avoid structural damage that might otherwise go undetected.

Electrically Conductive Urethane Foam

A high durability electrically conductive urethane foam acts as a variable resistor such that as the foam deflects, conductive particles get closer together, causing electrical resistance to decrease. The electrically conductive foam is further integrated into an automotive seat sensor system. 1. A conductive foam for an automotive seat assembly , said conductive foam comprising:a base polyurethane foam;said base foam being coated and/or saturated with an electrical bonding agent using a wet add-on application;said saturated base foam being oven cured until dry; andwherein said electrical bonding agent comprises carbon black conductive particles, a carboxylated styrene-butadiene emulsion latex binder, and a dispersing agent.2. The conductive foam as set forth in claim 1 , wherein said base foam comprises about 95 PPHP (parts per hundred polyol) high reactivity 6000 molecular weight capped triol polyether polyol claim 1 , about 3 PPHP glycerine/sucrose initiated polyether polyol claim 1 , about 2 PPHP glycerin-initiated polyether polyol claim 1 , and about 0.425 PPHP silicone surfactant.3. The conductive foam as set forth in claim 2 , wherein said base foam comprises about 0.33 PPHP amine catalyst 1 claim 2 ,4-Diazabicyclo[2.2.2]octane solution claim 2 , about 0.175 PPHP amine catalyst bis-(2-dimethylaminoethyl)ether in dipropylene glycol claim 2 , about 0.055 PPHP delayed-action catalyst made up of bis-(2-dimethylaminoethyl) ether in dipropylene glycol which has been partially neutralized with formic acid claim 2 , and about 1.85 PPHP water.4. The conductive foam as set forth in claim 3 , wherein said base foam comprises diphenylmethane diisocyante having a free NCO content of about 29.4% and a functionality of about 2.15.5. The conductive foam as set forth in claim 4 , wherein said electrical bonding agent comprises about 100 parts water claim 4 , about 1.75 parts latex binder claim 4 , about 1 part conductive particles claim 4 , and about 0.5 parts dispersing ...

Method for producing flame retardant polyurethane foams using halogen-free flame retardants

The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.

Polyurethane foam

A composition for producing a flame retardant open-celled semi-rigid polyurethane foam including: (a) at least one polyisocyanate, (b) at least one polyol, (c) at least one expandable graphite, (d) at least one blowing agent, (e) at least one catalyst, (f) at least one liquid flame retardant, (g) at least one cell opener, (h) at least one ethoxylated alcohol, and (i) at least one antioxidant; a process for producing the above composition; a flame retardant open-celled semi-rigid polyurethane foam produced using the above composition; and a process for producing the above flame-retardant open-celled semi-rigid polyurethane foam.

POLYMERIC AEROGEL COMPOSITE AND SYNTHESIS BY AMBIENT AND FREEZE-DRYING`

Polymeric aerogels, articles made from the polymeric aerogels and methods of making the polymeric aerogels are provided. The aerogels are made e.g. from crosslinkable monomers such as isocyanate monomers or phenolic monomers and a filler comprising crosslinkable hydroxyl groups. The filler may be natural (e.g. wood flour) or synthetic. The aerogels and products made therefrom exhibit low thermal conductivity and are mechanically strong. Due to their physical properties, these materials are used as e.g. building envelope components, such as walls, roofs and frames, to improve the thermal performance thereof, and may be used in a variety of other applications such as sound and insulation barriers in mechanical equipment, cryogenic containers, etc. 1. A construction , thermal insulating , or acoustic insulating material , comprisinga polymer formed from either one or more isocyanate monomers or one or more phenolic monomers; anda natural or synthetic filler,wherein said polymer is chemically bonded to or associated with said filler, andwherein said polymer and said filler form of a polymeric aerogel.2. The material of wherein said polymer is formed from said one or more isocyanate monomers and one or more polyols claim 1 , wherein said filler has one or more hydroxy moieties claim 1 , and wherein said polymer is chemically bonded to said filler at least one of said one or more hydroxyl moieties.3. The material of wherein said polymer is formed from said one or more phenolic monomers and one or more second monomers selected from the group consisting of formaldehyde and furfuryl alcohol claim 1 , wherein said filler has one or more hydroxy moieties claim 1 , and wherein said polymer is chemically bonded to said filler at least one of said one or more hydroxyl moieties.4. The material of wherein said construction material is nailable without cracking.5. The material of wherein said polymeric aerogel has a thermal conductivity below 0.08 W/mK claim 1 , a compressive ...

Viscoelastic polyurethane foam with coating

A coated viscoelastic polyurethane foam includes a viscoelastic polyurethane foam having the coating thereon, the viscoelastic polyurethane foam having a resiliency of less than or equal to 20% as measured according to ASTM D3574, and a coating material on and embedded within the viscoelastic polyurethane foam, the coating material including an aqueous polymer emulsion and an encapsulated phase change material.

Silicone surfactant for use in polyurethane foams prepared with polyether carbonate polylos

Surfactants for polyurethane foam forming compositions, polyurethane foam forming compositions, and polyurethane foams formed by such compositions. The polyurethane foam forming compositions employ (i) a silicone based surfactant comprising polyether groups pendant from the silicone backbone, and (ii) a polyol component comprising a polyether carbonate polyol, where the surfactant comprises low molecular weight pendant group having a high ethylene oxide content.

Amine based polymer polyol stabilizers

This invention relates to novel macromers prepared from amine based polyols, preformed stabilizers prepared from these macromers, and to polymer polyols prepared from the preformed stabilizers. The present invention also relates to processes for preparing these compositions.

Base-catalyzed, long chain, active polyethers from short chain dmc-catalyzed starters

The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed.

Method for producing a rigid polyurethane foam

The present invention relates to a process for the production of a rigid polyurethane foam or rigid polyisocyanurate foam, comprising the reaction of at least one polyisocyanate and of a polyol composition (PZ), where the polyol composition (PZ) comprises at least one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms, where at least one blowing agent is used during the reaction. The present invention further relates to rigid polyurethane foams or rigid polyisocyanurate foams obtainable or obtained by such a process, and also to a polyol composition (PZ) at least comprising one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms. The present invention also relates to the use of such a polyol composition (PZ) for the production of rigid polyurethane foams or rigid polyisocyanurate foams, and also to the use of a rigid polyurethane foam or rigid polyisocyanurate foam of the invention as, or for the production of, insulation materials, preferably insulation sheets, sandwich elements, hot-water tanks, boilers, coolers, insulation foams, refrigerators or freezers.

A composition with reduced aldehyde emission

This invention generally provides composition for making a polyurethane foam with reduced aldehyde emission and more specially to composition useful in means of transport such as interior part of cars, wherein composition is comprising: (a) a polyfunctional isocyanate; (b) an isocyanate reactive composition; and (c) a compound of the formula (I) or (II), wherein the compound (c) is present by weight percentage in the composition in an amount ranging from about 0.001 to about 10, preferably from about 0.01 to about 5, and more preferably from about 0.05 to about 2 based on the total weight of the composition. The compositions can reduce aldehyde emission, especially acetaldehyde emission in the PU foam and has no obvious influence on the mechanic properties of the foam.

Rigid polyurethane foams with uniform cell size distribution and homogeneous open-cell content

The present invention relates to predominantly open-cell, cold-deformable, rigid polyurethane foams which possess a uniform cell structure with similar cell sizes and similar physical properties, more particularly a similar open-cell content. These foams are suitable for producing automotive interior trim, more particularly roof linings and pillar trim.

Polymer polyol, method for producing the same, and method for producing polyurethane resin

A polymer polyol (I) is provided that is formed of a polyol (A), polymer particles (B) obtained by polymerization of an ethylenically unsaturated compound (b), and an active-hydrogen-containing compound (d) having an aromatic ring and having a number-average molecular weight of 150 to 2,000, wherein a content of (d) is 1 to 20% on the basis of a weight of (B). The polymer polyol of the present invention contains polymer particles having sufficiently small particle diameters, has a low viscosity, and has excellent handleability. A polyurethane resin obtained by using the polymer polyol of the present invention has excellent mechanical strengths such as elongation at break.

Preparation method of flexible polyurethane foam

A preparation method of a flexible polyurethane foam includes the following steps of: (1) subjecting an epoxidized vegetable oil, a benzoylformic acid, a basic catalyst, and an inert solvent to a ring-opening reaction in a first microchannel reactor of a microchannel reaction device to obtain a vegetable oil polyol; (2) subjecting the vegetable oil polyol obtained in the step (1), a propylene oxide and an inert solvent to an addition polymerization reaction in a second microchannel reactor of the microchannel reaction device to obtain a vegetable oil polyol for flexible polyurethane foam; and (3) using the vegetable oil polyol for flexible polyurethane foam obtained in the step (2) as the unique polyol, and subjecting the same and an isocyanate polyol to a foaming reaction to obtain the flexible polyurethane foam.

Flexible polyurethane foam, automobile seat pad, and flexible polyurethane foam production method

Provided is a flexible polyurethane foam having high hardness required for weight reduction of members and having low stress relaxation. A flexible polyurethane foam comprises a structural protein fiber having a length of 0.1 mm to 5 mm.

Hybrid systems consisting of foamed thermoplastic elastomers and polyurethanes

A hybrid material contains a matrix of polyurethane and foamed particles of thermoplastic polyurethane contained therein. A process can be used for producing such hybrid materials and these hybrid materials can be used as bicycle saddles, upholstery and shoe soles.

Flame-resistant polymer polyol dispersion

The invention relates to a process for preparing a flame-resistant polymer-modified polyol having a solids content of 1 to 65 wt. % wherein (i) at least one polyisocyanate and (ii) an olamine are reacted in (iii) a base polyol having at least two active hydrogen containing groups of which more than 50% are primary active hydrogen containing groups and wherein the olamine has at least one phosphonic ester group attached to a tertiary nitrogen atom and contains at least two hydroxyl groups. The invention further relates to a flame-resistant polymer-modified polyol obtainable with the process of the invention, to a process for preparing optionally foamed plastics using the polymer- modified polyol of the invention, and to the use of a polymer-modified polyol for the preparation of flexible polyurethane foams.

Safety critical control system and method

This disclosure involves a method of controlling a safety critical control device, the method comprising: sending user inputs to a first state machine, identifying user inputs by the first state machine, determining the correct state to communicate to a second state machine, the correct state being determined by selecting one state of a plurality of states depending on the user inputs, communicating the correct state to a second state machine through a control bus, and determining the correct state for the second state machine based on communication from the control bus.

Process for producing elastic and tear-resistant polyurethane foams and uses

The invention provides a process for producing polyurethane foams, the foams thus produced and the uses thereof. In the inventive process compositions comprising A) isocyanate-functional prepolymers obtainable by the reaction of A1) aliphatic, low molecular weight diisocyanates of molar mass from 140 to 278 g/mol with A2) polyalkylene oxides having an OH functionality of two or more, A3) optionally further isocyanate-reactive components not covered by A2), B) water in an amount of at least 2% by weight, based on the total weight of the composition; C) optionally heterocyclic 4-membered or 6-membered ring oligomers of low molecular weight, aliphatic diisocyanates having a molar mass of 140 to 278 g/mol; D) optionally catalysts; E) optionally salts of weak acids, the corresponding free acids of which have a pKA in water at 25° C. of ≥3.0 and ≤14.0; F) optionally surfactants; G) optionally mono- or polyhydric alcohols or polyols, and H) optionally hydrophilic polyisocyanates obtainable by reaction of H1) low molecular weight, aliphatic diisocyanates of molar mass from 140 to 278 g/mol and/or polyisocyanates preparable therefrom and having an isocyanate functionality of 2 to 6 with H2) monofunctional polyalkylene oxides of OH number from 10 to 250 and of ethylene oxide content from 50 to 100 mol %, based on the total amount of the oxyalkylene groups present, are provided, foamed and cured, wherein the isocyanate-containing components, especially components A), C) and H), have a total isocyanate content within a range from 2% to 8% by weight and a content of urethane groups of 1.0 to 3.5 mol/kg, based in each case on the total amount of the isocyanate-containing components.

Production of pu foams

Process for producing PU foams by reacting at least one polyol component with at least one isocyanate component in the presence of one or more catalysts that catalyze the isocyanate-polyol and/or isocyanate-water and/or isocyanate trimerization reactions, and optionally one or more chemical or physical blowing agents, with use of SiOC-linked, linear polydialkylsiloxane-polyoxyalkylene block copolymers having repeat (AB) units, obtainable through the reaction of polyether diols with equilibrated α,ω-diacetoxypolydialkylsiloxanes, wherein a sufficient amount of the SiOC-linked, linear polydialkylsiloxane-polyoxyalkylene block copolymers having repeat (AB) units is added such that the proportion by mass of said component based on the finished PU foam is from 0.0001% to 10% by weight, preferably 0.01% to 6% by weight, especially 0.05% to 5% by weight.

Process for preparing plastics with improved hydrolysis stability, the plastics prepared from the same and uses thereof

The present invention relates to a process for preparing plastics with improved hydrolysis stability, comprising a step of adding 0.05-5 wt. % perchlorate salt which is based on 100 wt. % of the plastics, as a raw material to prepare the plastics. The present invention also relates to the plastics prepared from the process and use thereof.

Polyether-polysiloxane block copolymer composition, surfactant and foam stabilizer including same, polyurethane foam-forming composition, cosmetic, and preparation method thereof

A polyether-polysiloxane block copolymer composition is disclosed. The copolymer composition comprises (A) a polyether-polysiloxane block copolymer having in a molecule structural units as expressed by General Formula (1) below: where a terminal group thereof is an alkenyl group or the like bonded to a polyether portion. The copolymer composition further comprises (B) a liquid monool organic compound, which is (B1) a glycol ether compound having a low degree of polymerization, a terminal hydrogen substituted with a hydrocarbon group, and a secondary alcoholic hydroxyl group provided on another terminal, or (B2) a higher alcohol compound having a branched alkyl group with 12 or more carbon atoms. The copolymer composition generally does not contain a dimethyl polysiloxane at more than the mass of component (A). A manufacturing method, foam stabilizer or the like containing the copolymer composition, and a polyurethane foam are also disclosed.

Method of reducing odors of lipid-based polyols

A method of reducing odors in lipid-based polyol. At least one lipid-based polyol is provided, and mixed with ricinoleic acid and/or a metal salt of ricinoleic acid. Isocyanate may be added, preferably toluene diisocyanate (TDI). The polyol, and the isocyanate when present, are reacted in the presence of the ricinoleic acid and/or a metal salt of ricinoleic acid which reduces or removes odors in the lipid-based polyol. When isocyanate is used, low, limiting levels are preferred, well below the level required to fully react with all of the polyol. Tin, zinc, sodium, and calcium ricinoleic acid metal salts are particularly preferred. Preferably the reaction takes place without added heat, at room temperature. The reaction may be performed in a chamber which is under at least a partial vacuum.

POLYURETHANE FOAMS HAVING IMPROVED MECHANICAL PERFORMANCE

A polyurethane foam material having the following properties: 1. A reaction system for making a polyurethane foam material having a compression hardness at 10% according to ISO 3386/1 higher than 60 kPa and lower than 120 kPa; a free rise density in the range 40-80 kg/maccording to ISO 845 , a flexural modulus according to ISO 1209-2 in range 0.95-2 MPa , said reaction system comprising at least:a polyisocyanate composition with isocyanate functionality between 2.2 and 2.7, and a) at least one polyoxyethylene based polyether, polyester or polyether polyester polyol having an average nominal hydroxyl functionality in the range 2.5-3.5, an hydroxyl value above 350 and an ethylene oxide content >85% by weight, and', 'b) at least one polymer polyetherpolyol having a molecular weight in the range 2000-7000 and having solid particles in the range of 20-45 wt % calculated on the total weight of the polymer polyol', 'wherein the amount of the polymer polyetherpolyol is 50-70 wt % calculated on the total weight of the isocyanate reactive composition (a)+b)); and, 'an isocyanate reactive composition comprising'}optional chain extenders, andcatalysts, andwater and/or other blowing agents.2. The reaction system according to wherein the foam is having a flexural stress (bending) at maximum load according to ISO 1209-2 in the range 120-180 kPa.3. The reaction system according to wherein the foam is having a free rise density in the range 45-65 kg/mmeasured according to ISO 845.4. The reaction system according to wherein the foam is having a compression set at 70° C. according to ISO 1856 lower than 40%.5. The reaction system according to wherein the foam is having a compression hardness at 10% according to ISO 3386/1 in the range 70-110 kPa.6. The reaction system according to wherein the foam is having a flexural modulus according to ISO 1209-2 in the range 0.95-1.75 MPa.7. The reaction system according to wherein the polyisocyanate composition has an isocyanate functionality ...

METHOD FOR REDUCING THE ALDEHYDE EMISSIONS OF POLYURETHANE FOAMS

The present invention relates to a process for producing polyurethanes having reduced aldehyde emissions using large amounts of phenolic antioxidants. The present invention further relates to the polyurethanes obtainable from this process, and to the use of such polyurethanes, for example in the interior of automobiles. 1. A method of reducing aldehyde emissions in polyurethane foams , comprising reacting an isocyanate component with an isocyanate-reactive component in the presence of a phenolic antioxidant , wherein a phenolic antioxidant other than 2 ,4-dimethyl-6-ocytylphenol , 2 ,6-di-t-butyl-4-methylphenol , 2 ,6-di-t-butyl-4-ethylphenol , 2 ,6-di-t-butyl-4-n-butylphenol , 2 ,2′-methylenebis(4-methyl-6-t-butylphenol) and 2 ,2′-methylenebis(4-ethyl-6-t-butylphenol) is used; and the phenolic antioxidant is employed in amounts of ≥0.07 parts by weight; and ≤0.01 parts by weight of antioxidants containing amino groups may be present in addition to the phenolic antioxidants , wherein the reported quantities of these two components are in each case based on 100 parts by weight of a component selected from compounds containing isocyanate-reactive hydrogen atoms having an OH number according to DIN 53240 of ≥15 to <280 mg KOH/g.2. A process for producing polyurethane foams by reacting component A containingA1 compounds containing isocyanate-reactive hydrogen atoms having an OH number according to DIN 53240 of ≥15 to <280 mg KOH/g,A2 optionally, compounds containing isocyanate-reactive hydrogen atoms having an OH number according to DIN 53240 of ≥280 to <4000 mg KOH/g,A3 water and/or physical blowing agents, a) catalysts,', 'b) surface-active additive substances,', 'c) pigments or flame retardants,, 'A4 optionally auxiliary and additive substances such as'}andA5 one or more phenolic antioxidants other than 2,4-dimethyl-6-ocytylphenol, 2,6-di-t-butyl-4-methylphenol, 2,6-di-t-butyl-4-ethylphenol, 2,6-di-t-butyl-4-n-butylphenol, 2,2′-methylenebis(4-methyl-6-t-butylphenol) ...

Non-migratory photoactive diols for fluorescent polymers

A polyurethane foam includes a fluorescent repeating unit. The authenticity of a polyurethane foam may be determined by irradiating the foam with a UV light and determining if there is a fluorescent emission.

METHODS FOR REDUCING ALDEHYDE EMISSIONS IN POLYURETHANE FOAMS

Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant, at least one catalyst, and certain aldehyde-suppressing additives. Foams so produced emit low levels of formaldehyde, acetaldehyde and propionaldehyde. 3. The process of wherein R claim 1 , R claim 1 , Rand Rare each independently C1-C4 alkyl.4. The process of wherein m is 1 and A is hydrogen claim 3 , hydroxyl claim 3 , —NHor alkyl.5. The process of wherein m is 2 or more and A is —O— claim 3 , —NH— claim 3 , alkylene claim 3 , arylene claim 3 , aryl-substituted alkylene claim 3 , aryl-substituted alkylene claim 3 , —NH—C(O)—(CH)—C(O)—NH— where 0 is 1 to 20 claim 3 , or —O—C(O)—(CH)—C(O)—O— where o is 1 to 20.7. The process of wherein Ris C1-C4 alkyl and Ris hydrogen or C1-C4 alkyl.9. The method of wherein the compound represented by structure I is present in an amount of from 0.02 to 0.25 parts by weight per 100 parts by weight of the at least one isocyanate reactive compound having at least two isocyanate-reactive groups per molecule and an equivalent weight of at least 200 per isocyanate-reactive group.10. The method of wherein the compound represented by structure II is present in an amount of from 0.02 to 0.25 parts by weight per 100 parts by weight of the at least one isocyanate reactive compound having at least two isocyanate-reactive groups per molecule and an equivalent weight of at least 200 per isocyanate-reactive group.11. The method of wherein the reaction mixture is cured in the presence of an antioxidant.12. The method of wherein the antioxidant is a phenolic compound.13. The method of wherein the antioxidant is present in an amount of 0.2 to 1.5 parts by weight per 100 parts by weight of the at least one isocyanate reactive compound having at ...

Use of oligomeric sterically hindered phenol for stabilization of polyols and polyurethanes

wherein n is an integer ranging from 0 to 10, R is an alkyl group with 12 carbon atoms or less, as an antioxidant stabilizer, optionally in combination with other antioxidants, to said polyether polyol. This invention further relates to polyols stabilized by the method of this invention and to stabilized polyurethanes prepared from such stabilized polyols or stabilizers component.

Composition

An isocyanate reactive composition including at least one component selected from the group consisting of a polyether polyol, a polyester polyol, a polyether polyamide and a polyester polyamide; one or more amine components, each of said amine components having a given structure. In some embodiments, the average number of nitrogen atoms of said amine components is in the range of 5 to 10. 2. A method according to claim 1 , wherein the average number of nitrogen atoms of said one or more amine components is in the range of 5 to 10.4. A method according to claim 1 , wherein said reaction mixture comprises:at least one isocyanate component;at least one isocyanate reactive component comprising one or more reactive hydrogen atom, wherein the at least one isocyanate reactive component is selected from a polyether polyol, a polyester polyol, a polyether polyamide, and a polyester polyamide;catalysts selected from the group consisting of blowing and gelling catalysts; andoptionally, fire retardants, antioxidants, surfactants, physical or chemical blowing agents, fillers, pigments, or any other typical additives used in polyurethane materials.5. A method according to claim 1 , wherein said one or more amine components is provided to the reaction mixture as part of the isocyanate reactive component. This application is a Divisional of U.S. application Ser. No. 16/386,978 filed Apr. 17, 2019, which is a Divisional of U.S. application Ser. No. 14/420,915 filed Feb. 11, 2015, which is the National Phase of International Application PCT/EP2013/064519 filed Jul. 10, 2013, which designated the U.S. and which claims priority to U.S. Patent Provisional Application No. 61/683,957, filed Aug. 16, 2012. The noted applications are incorporated herein by reference.The present invention relates to isocyanate reactive compositions and methods to reduce the amount of aldehydes and/or dimethylformamide emitted from polyurethane foams by using said isocyanate reactive compositions.Polyurethane ...

Polyurethane sealant

The present invention relates to a process for producing a polyurethane sealant, which comprises mixing (a) polyisocyanate, (b) polyetherpolyols, (c) aliphatic, exclusively amine initiated alkoxylation products having an OH-number of 400 to 1000 mg KOH/g and a functionality of 4, (d) blowing agents and optionally (e) chain extenders and/or crosslinking agents, (f) catalysts and (g) auxiliaries and/or additives to give a reaction mixture and reacting the reaction mixture to give the polyurethane sealant. The present invention further relates to a cast in place polyurethane sealant, obtained according to a process according to the present invention.

Polyurethane resin

Disclosed is a polyurethane resin which is obtained by a reaction between a polyisocyanate component, which contains 1,4-bis(isocyanatomehyl)cyclohexane including not less than 80% by mole of trans isomers, and an active hydrogen compound component.

Method for the Preparation of Microcellular Polyurethane Elastomers

This invention relates to a method of preparing a microcellular polyurethane elastomer by reacting naphthalene diisocyanate with a polyol to prepare a prepolymer containing an isocyanate (NCO) group, followed by mixing the prepared polyurethane prepolymer with a plasticizer, water, an emulsifier and the like, and then foaming the prepolymer blend to prepare a polyurethane elastomer, wherein the emulsifier is a mixture of (a) a compound selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 2,4-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, hexamethylene diisocyanate, 1,4′-cyclohexane diisocyanate and mixtures thereof, and (b) a C 2-10 hydrocarbon having a molecular weight of 500 or less with two to four hydroxyl groups, or mixtures thereof. The method of the invention can optimize the viscosity and properties of the prepolymer resulting from the reaction of naphthalene diisocyanate with a polyol, thus improving processability.

FORMULATED POLYOL COMPOSITONS

Embodiments of the present disclosure are directed towards formulated polyol compositions that include a sucrose propoxylated polyol, a polyether triol, and a propoxylated homopolymer triol. 1. A formulated polyol composition comprising:a sucrose propoxylated polyol having an average hydroxyl functionality from 3.0 to 6.0, an average hydroxyl number from 360 to 460 mg KOH/g, and a number average molecular weight from 400 to 800;a polyether triol having an average hydroxyl functionality from 2.6 to 3.4, an average hydroxyl number from 100 to 200 mg KOH/g, and a number average molecular weight from 900 to 1200;a propoxylated homopolymer triol having an average hydroxyl functionality from 2.6 to 3.4, an average hydroxyl number from 300 to 500 mg KOH/g, and a number average molecular weight from 250 to 650;a surfactant;water;a crosslinker; anda catalyst selected from a blowing catalyst, a gel catalyst, and combinations thereof.2. The formulated polyol composition of claim 1 , wherein the formulated polyol composition includes a flame retardant.3. The formulated polyol composition of claim 1 ,wherein the sucrose propoxylated polyol is from 21 to 31 parts of the formulated polyol composition based upon 100 parts of the formulated polyol composition;wherein the polyether triol is from 12 to 22 parts of the formulated polyol composition based upon 100 parts of the formulated polyol composition; andwherein the propoxylated homopolymer triol is from 0.1 to 8.0 parts of the formulated polyol composition based upon 100 parts of the formulated polyol composition.4. The formulated polyol composition of claim 1 , wherein the surfactant is from is from 0.5 to 5.0 parts of the formulated polyol composition based upon 100 parts of the formulated polyol composition.5. The formulated polyol composition of claim 1 , wherein the water is from 11 to 21 parts of the formulated polyol composition based upon 100 parts of the formulated polyol composition.6. The formulated polyol composition ...

Protein-containing foams, manufacture and use thereof

The invention relates generally to protein-containing polyurethane foams, methods and compositions for making the polyurethane foams, and articles comprising the polyurethane foams.

Method for forming polyurethane covers for golf balls using foam compositions

The present invention provides methods for producing molded golf balls and the resultant balls. The methods of this invention involve producing foamed polyurethane covers and these methods help reduce dimple distortions and other surface imperfections. These golf balls contain an inner core and outer foamed polyurethane cover. One or more intermediate layers can be disposed between the core and cover. In one embodiment, a castable liquid polyurethane composition containing a foaming agent is dispensed into mold cavities, which are then pressed together to form a foam cover for the ball.

Filled polyurethane foam having tailored microstructures

Filled polyurethane foams having tailored microstructures, as well as methods of making these polyurethane foams, are described herein. By tailoring the microstructure of the polyurethane foam, composite materials having desirable mechanical properties (e.g., elastic modulus, compressive strength, or combination thereof) can be obtained.

Polymer polyols comprising a polyether carbonate polyol as the base polyol

This invention relates to polymer polyols comprising the free-radical polymerization product of a base polyol, at least one ethylenically unsaturated monomer, and, optionally, a preformed stabilizer, in the presence of at least one free-radical polymerization initiator and at least one chain transfer agent, in which the base polyol is a polyether carbonate polyol. A process for preparing these polymer polyols is also described. This invention also relates to a polyurethane foam prepared from these polymer polyols and to process for the preparation of these polyurethane foams.

Polyurethane foam composition

The invention relates to a polyurethane composition, which is used for the manufacture of products for the industry and households, in particular in the manufacturing of mattresses, sofas, seats, chairs, and underwear. The polyurethane foam composition, according to the invention consists of polyol, organic polyisocyanate, catalyst, foaming agent, polymerization initiator, stabilizer, additives, and contains powdered amber or powdered amber resin with particle size within the range of microns. The composition provides versatile application, possessing properties beneficial to health, such as stimulating metabolism, relieving asthmatic and allergic respiratory problems, helping the overcoming of physical pain, and eliminating negative energy.

Novel polymer polyol compositions, a process for preparing these novel polymer polyol compositions, flexible foams prepared from these novel polymer polyols and a process for the preparation of these flexible foams

This invention relates to novel polymer polyols, to a process for preparing these novel polymer polyols, to flexible polyurethane foams comprising these novel polymer polyols, and to a process for the production of these flexible polyurethane foams. These novel polymer polyols provide unexpected improvements in foams prepared therefrom.

Polyurethanes With Reduced Aldehyde Emission

The present invention relates to Provided herein is a process for the production of polyurethanes with reduced aldehyde emission, where wherein a CH-acidic compound which has one or more alkylene oxide units is added to the reaction mixture for the production of the polyurethane. The present invention further relates to Further provided herein are polyurethanes produced by this process and to the use of these polyurethanes in the interior of means of transport.

Vegetable oil based polyols and polyurethanes made therefrom

Polyols useful in the manufacture of polyurethanes are disclosed. The polyols are prepared by reacting a vegetable oil based (hydroxymethyl containing) monomer with a polyol, polyamine or aminoalcohol under vacuum.

Polyvinylchloride/polyurethane hybrid foams with improved burn properties and reduced after-glow

The present invention provides a rigid polyurethane foam comprising the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate and a polyol component comprising, about 20 wt. % to about 80 wt. %, based on the weight of the polyol component, of a double metal cyamide (DMC)-catalyzed polyether polyol having a number average molecular weight of greater than about 1,000 Daltons (Da), about 80 wt. % to about 20 wt. %, based on the weight of the polyol component, of a sucrose-based polyol having a functionality of from about 2.5 to about 6 and a number average molecular weight of from about 350 Da to less than about 1,000 Da, and about 0 wt. % to about 40 wt. %, based on the weight of the polyol component, of a low molecular weight organic compound having a number average molecular weight of less than about 600 Da in the presence of water, polyvinylchloride (PVC) particles having a diameter of from about 0.1 microns to about 200 microns, glass beads having a diameter of from about 40 microns to about 400 microns, and about 1 wt. % to about 30 wt. %, based on the weight of the polyol component, of expanded graphite, optionally, in the presence of at least one of carbon dioxide, surfactants, flame retardants other than expanded graphite, crosslinking agents, pigments and catalysts, wherein the rigid polyurethane foam with a density of about 10 pcf to about 25 pcf has a heat sag measured at 102 mm overhang at 121° C. and one hour of less than about 5 mm and an average after-glow time of less than about 35 seconds. The inventive rigid polyurethane foams exhibit improved burn properties and reduced after-glow while maintaining improved heat sag performance over commercial materials.

Process to manufacture polyurethane products using polymer polyols in which the carrier polyol is a tertiary amone based polyol

The present invention pertains to a copolymer polyols based on tertiary amine based polyols and to polyurethane products made therefrom. The use oof such copolymer polyols reduces the amount of amine catalysts needed for the production of polyurethane foam.

Low emission polyurethane polymers made with autocatalytic polyols

The present invention discloses a process for producing a polyurethane product with autocatalytic polyols. These auto-catalytic polyols are based on an initiator of the formula (I): HmA-(CH2)n-N(R)-(CH2)p-AHm where n and p are independently integers from 2 to 6, A at each occurrence is independently oxygen, nitrogen or hydrogen, with the proviso that only one of A can be hydrogen at one time, R is a C1 to C3 alkyl group, m is equal to 0 when A is hydrogen, is 1 when A B is oxygen and is 2 when A is nitrogen; or are polyols which contain an alkyl amine of within the polyol chain or a dialkylylamino group pendant to the polyol chain wherein the polyol chain is obtained by copolymerization of at least one monomer containing an alkyl aziridine or N, N-dialkyl glycidylamine with at least one alkylene oxide. These auto-catalytic polyols are reacted with a polyisocyanate in the presence of other additives and/or auxiliary agents known per se to produce polyurethane products.

Amine-epoxy autocatalytic polymers and polyurethane products made therefrom

The present invention pertains to low emission polyurethane products based on autocatalytic polymers made by reaction of epoxide resins with compounds containing secondary and/or tertiary amines bearing a reactive hydrogen and to processes for their manufacture.

Process to manufacture flexible polyurethane foams

The present invention is to the production of flexible polyurethane foam in the absence of an amine catalyst. The reactivity of the foam forming system can be controlled by the addition of an autocatalytic polyol containing a tertiary amine where the amount of autocatalytic polyol comprises less than 5 percent by weight of the total polyol.

Hybrid systems consisting of foamed thermoplastic elastomers and polyurethanes

The invention relates to a hybrid material containing a matrix consisting of polyurethane and foamed particles of thermoplastic polyurethane contained in said matrix and to a method for producing hybrid materials of this type. The invention also relates to the use of said hybrid materials in bicycle saddles, padding and shoe soles.

Production of functionalized polyurethane foams, e.g. used as adsorbent, comprises preparing foam incorporating bifunctional reagent and reacting active compound with reagent

Production of functionalized polyurethane foams comprises: (a) reacting an isocyanate with a compound having at least two isocyanate-reactive hydrogen atoms and a compound (I) having at least one hydroxy, amino and/or thiol group and at least one group R selected from halogen, carbonyl, ester, anhydride, epoxy, carboxy and sulfone groups; and (b) applying an R-reactive compound (II) to the resulting polyurethane foam so that (II) is covalently bound to (I) through R. An independent claim is also included for polyurethane foams produced by the above method.

Functionalised polyurethanes

The present invention relates to a method for producing an isocyanate- based polymeric material by polymerizing a reaction mixture which comprises different reaction components, including at least one polyisocyanate component and at least one component which is reactive towards said polyisocyanate component. The reaction components comprise at least one anchor component which has at least one anchor group which enables to bond a functional component covalently to the polymeric material. The anchor group is a reactive unsaturated group which does not react during the polymerisation process so that the polymerisation process is not interfered. The anchor group is selected to that it can bind the functional component by a click chemistry reaction to the polymeric material. It is more particularly selected so that it can participate in a catalysed Huisgen 1,3-dipolar cycloaddition reaction or in a Diels-Alder cycloaddition reaction The invention also relates to the obtained isocyanate-based polymeric material, to the use thereof to produce a functionalised polymeric material and to this functionalised polymeric material.

Process for the preparation of polyurethane cold foams

Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Polyurethan-Kaltschäumen durch Umsetzung eines Gemisches aus hochreaktiven Polyolen, welche üblicherweise ein mittleres Molekulargewicht zwischen etwa 4800 und 6500 g/mol und mindestens 70% primäre Hydroxylgruppen aufweisen und gegebenenfalls Füllstoffe enthalten, polyfunktionelle Isocyanate, Aminaktivatoren, Vernetzer, Zinnkatalysatoren, Treibmittel und Stabilisatoren, welches dadurch gekennzeichnet ist, dass man als Stabilisatoren Verbindungen der allgemeinen Formel (1) verwendet, DOLLAR F1 wobei der Anteil an Siloxanen mit N > 9 höher als 10 Gew.-% und N > 12 gleich oder höher als 5 Gew.-% ist. The invention relates to a process for the production of cold polyurethane foams by reacting a mixture of highly reactive polyols, which usually have an average molecular weight between about 4800 and 6500 g / mol and at least 70% primary hydroxyl groups and optionally contain fillers, polyfunctional isocyanates, amine activators, Crosslinking agents, tin catalysts, blowing agents and stabilizers, which is characterized in that compounds of the general formula (1) are used as stabilizers, DOLLAR F1, the proportion of siloxanes with N> 9 being greater than 10% by weight and N> 12 being equal to or is higher than 5% by weight.

Verfahren zur Herstellung thermostabiler Polyurethanweichschaumstoffe

Amine catalysts suitable for the production of low-emission, re-catalyst-stable flexible polyurethane foams

Der Gegenstand der vorliegenden Erfindung betrifft die Verwendung eines reaktiven Aminkatalysators, insbesondere Diethylaminoethoxyethanol und/oder Diethylethanolamin, in wässrigen oder organischen Lösungen zur Herstellung von Polyurethanweichschaumstoffen mit erhöhter Rekatalysestabilität, sowie eine Katalysatorkombination, enthaltend wenigstens einen erfindungsgemäß verwendbare reaktiven Aminkatalysator, und wenigstens eine Kalium-, Zinn- und/oder Zink-organische-Verbindung; und/oder wenigstens ein tertiäres Amin, ausgewählt aus der Gruppe, umfassend Triethylendiamin, Triethylamin und/oder Silamorpholin; und/oder wenigstens ein säureblockiertes Derivat eines tertiären Amins. The present invention relates to the use of a reactive amine catalyst, in particular diethylaminoethoxyethanol and / or diethylethanolamine, in aqueous or organic solutions for producing flexible polyurethane foams having increased recatalyst stability, and a catalyst combination comprising at least one reactive amine catalyst usable in accordance with the invention and at least one potassium, Tin and / or zinc-organic compound; and / or at least one tertiary amine selected from the group comprising triethylenediamine, triethylamine and / or silamorpholine; and / or at least one acid-blocked derivative of a tertiary amine.

Tissue engineering scaffold comprising polyurethane material having voids interconnected by pores

A tissue engineering scaffold for cell, tissue or organ growth comprises a biocompatible porous polyurethane cellular material comprising a plurality of substantially spherical voids of diameter from 20 to 300 microns, preferably 80 to 200 microns, interconnected by generally elliptically shaped pores. The cellular material has a void content of from 85% to 98% and a surface area to volume of from 5 to 400 mm 2 /mm 3 , ideally from 20 to 80 mm 2 /mm 3 .

Procedure for the preparation of a polyurethane-based nanoporous coating

Procedimiento para la preparación de una espuma nanoporosa en el que: se proporciona un componente monomérico (A), que comprende un isocianato polifuncional (A1) y un disolvente (C), y se pone en contacto el componente monomérico (A) con vapor de agua, en el que el componente monomérico (A), antes de ponerse en contacto con vapor de agua, se aplica sobre un soporte (B). Process for the preparation of a nanoporous foam in which: a monomer component (A) is provided, comprising a polyfunctional isocyanate (A1) and a solvent (C), and the monomer component (A) is contacted with steam of water, in which the monomer component (A), before contacting with water vapor, is applied on a support (B).

Methods for Reducing Aldehyde Emissions in Polyether Polyols and Polyurethane Foams

Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, and a certain 3-oxopropanamide compound. Foams so produced emit low levels of aldehydes.