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7619014 |
Rigid polyurethane foams for insulation and process for producing same
A rigid polyurethane foam having lose density without an increased k-factor can be produced by adding small amounts of butyl alcohol to a polyurethane composition containing an isocyanate, at least...
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7431794 |
Process for producing leather-like sheet
A process for producing a leather-like sheet, wherein a skin-like layer composed of a resin composition (C) is formed on top of a fibrous substrate (E), comprising; heating and melting a...
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7393879 |
High resilient silicone foam and process for preparing same
A method for producing a novel silicone foam by reaction of a polyisocyanate with a silicone oligomer having a plurality of functional end groups with active hydrogens, optionally in the presence...
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7288211 |
Hydrofluorocarbon blown foam and method for preparation thereof
The invention relates to the addition of α-methyl styrene, isobutanol and/or isopropanol to reduce vapor pressure, improve k-factor, enhance the solubility of the blowing agent in the premix...
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7262227 |
Process for producing synthetic resin foam, blowing agent and premix
The present invention relates to a process for producing a synthetic resin foam which comprises reacting at least one polyol with at least one polyisocyanate compound in the presence of an organic...
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7230037 |
Method for mixing a polyol component and an isocyanate component
The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction...
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7183331 |
Method for producing a rigid polyurethane foam
A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at...
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7169339 |
Method for producing polymethacrylimide foams
The invention relates to an improved method for producing foamed material, especially poly(meth)acrylimide foams, which are foamed from polymer plates produced according to the casting method. The...
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7087657 |
Stable polyol dispersions, polyurethane moldings produced therefrom, and their use
The present invention relates to polyol dispersions with long-term stability, to cellular polyurethane moldings produced therewith, to processes for their preparation and to their use.
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7074880 |
Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same
A preparation process of polyimide aerogels that composed of aromatic dianhydrides and aromatic diamines or a combined aromatic and aliphatic diamines is described. Also descried is a process to...
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6921779 |
Blowing agent enhancers for polyurethane foam production
Rigid polyurethane blowing agent enhancers, methods for using them, and the products produced by these methods are disclosed. The enhancers are low molecular weight alcohols and/or ethers that...
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6903149 |
Composition for wood-polymer composite and wood-polymer composite made from the composition
The present invention provides a composition for wood-polymer composites containing a thermoplastic resin, wood flour and a polyol ester compound having not less than one hydroxyl group esterified...
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6890966 |
Process for the production of a lightweight cold urethane
In a process for the production of a lightweight cold urethane wherein raw materials are injected into a mold in one shot, diethanolamine is added in an amount of 0.1 to 2.0 parts by weight per 100...
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6861452 |
Composition for production of flame-retardant flexible polyurethane foams
The present invention provides a composition for flame-retardant flexible polyurethane foam comprising: (i) a polyol component; (ii) a polyisocyanate component; (iii) a halogen-free phosphate ester...
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6855741 |
Composition for use in flexible polyurethane foams
A plasticizer with a crosslinking/chain extending agent is incorporated into a water-blown flexible polyurethane foam formulation to provide acceptable softness, openness, and tensile strength...
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6818674 |
Elastic member and image formation equipment
There are disclosed an elastic member which comprises (A) polyurethane foam obtained by agitationally mixing a foaming agent, a foam stabiizer and a urethane prepolymer synthesized from a polyol...
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6790871 |
Isocyanate-based polymer foam and process for production thereof
A flexible isocyanate-based polymeric foam which has: (i) low resiliency; (ii) a Tg less than or equal to about 0° C.; and (iii) a change in tan δ less than or equal to about 35% from a median...
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6790820 |
Compositions of hydrofluorocarbons and trans-1,2-dichloroethylene
The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively...
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6787575 |
Method for processing a mineral fillers with a phosphate, said fillers and their uses
The invention relates to the technological sector of mineral fillers used in the sector which manufactures polyurethane foams and in particular fillers of the carbonate, hydroxide, silicate,...
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6777382 |
Compositions of hydrofluorocarbons and methanol
The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively...
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6767929 |
Process for producing polyurethane
A catalyst for producing a polyurethane, comprising a dialkylaminoalkyl alcohol represented by the formula (I): R 1 R 2 N—X—OH (I) wherein each of R 1 and R 2 is independently an alkyl...
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6765032 |
Treated mineral fillers suspensions of these fillers in polyols and their uses in polyurethane foams
Method for the treatment of mineral fillers using organic phosphate treatment agents. Treated mineral fillers obtained by said method and suspension of these treated mineral fillers in polyols. Use...
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6753356 |
Foaming compositions
Use as foaming agents having a low environmental impact of azeotropic or near azeotropic compositions using difluoromethoxy-bis(difluoromethyl ether) and/or...
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6676849 |
Low yellowing scorch inhibitor composition
A scorch inhibitor composition for use an additive in the manufacture of polyurethane foams is based on a derivatized phenol, 4-tertbutyl catechol, and optionally, phenothiazine. The derivatized...
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6670405 |
Method for producing block-shaped polymethacrylimide foamed materials
The invention relates to a method for producing block-shaped and plate-shaped polymethacrylimide foamed materials by copolymerizing methylacrylic acid and methylacryl nitrile, by subjecting the...
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6653361 |
Flame retardant polyurethane composition and method of manufacture thereof
A polyurethane foam or elastomer comprises an organic polyisocyanate component, an active hydrogen-containing component reactive with the polyisocyanate component, wherein the viscosity of this...
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6617365 |
Use of silicon-polyether copolymers in the production of high resilience polyurethane foams
The invention relates to the use of silicone-polyether copolymers of the formula I as surface-active substances in the production of polyurethane foams.
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6586487 |
Low-density, water blown polyurethane foams for energy-absorbing applications
A method for making an energy-absorbing foam having a density that is less than about 7 pcf that exhibits excellent strength properties and that is particularly suitable for automobile bumper...
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6586485 |
Production of flexible polyurethane foams
In a process for producing flexible polyurethane foams by the reaction known per se of polyisocyanates with compounds containing at least two hydrogen atoms which react with isocyanate, the...
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6534555 |
Catalyst systems for polyurethane polyester foams
Provided are catalyst systems which produce flexible polyurethane polyester foams that are color stable, are lower in odor, and uses less catalysts than current most commonly practiced technology....
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6525107 |
Acid-blocked amine catalysts for the production of polyurethanes
Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes. The acid-blocked amine catalysts have the general structure shown below: wherein A is the residue of an...
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6506810 |
Use of mixtures of organofunctionally modified polysiloxanes with branched alcohols in the production of flexible polyurethane foams
The invention relates to the use of mixtures of organofunctionally modified polysiloxanes with branched alcohols in the production of flexible polyurethane foams.
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6458860 |
Advances in urethane foam catalysis
Provided herein are catalyst systems useful for providing polyurethane foam products which exhibit low fogging characteristics while possessing favorable overall physical properties when used as...
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6451348 |
Method of manufacturing porous matrix-type controlled release systems using emulsion technique
A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent...
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6433032 |
Process for rigid polyurethane foams
Process for the preparation of open celled rigid polyurethane or urethane-modified polyisocyanurate foams by reaction of a polyfunctional isocyanate-reactive composition with a polyisocyanate...
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6387972 |
Process to enhance polyurethane foam performance
An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and a polyfunctional isocyanate-reactive component...
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6355701 |
Process for manufacturing rigid polyisocyanurate foam products
A process for manufacturing an insulation board comprising a rigid polyisocyanurate foam core having two major surfaces and a facing material on at least one of the major surfaces, comprising (a)...
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6348514 |
Stabilized polyether polyol and polyurethane foam obtained therefrom
Disclosed is an isocyanate-reactive composition comprising an isocyanate-reactive compound having an equivalent weight of from about 400 to about 12000, and a stabilizing amount of methyl...
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6326410 |
Wound dressing comprising polyurethane foam
A wound dressing has a wound-contact layer formed from a polyurethane foam. The foam comprises one part by weight of the reaction product of an isocyanate-capped prepolymer with water (and...
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6303669 |
Flexible polyurethane foam
The present invention provides a flexible polyurethane foam having good resistance to wet heat aging and resistance to ozone deterioration and a speaker edge having an excellent waterproofness...
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6268402 |
Process for making isocyanate-based rigid foam
A process for producing a rigid foam based on isocyanate comprises reacting an organic and/or modified organic polyisocyanate with a polyol composition and, optionally, a relatively low molecular...
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6268046 |
Process for producing extruded foam products having polystyrene blends with high levels of CO2 as a blowing agent
In one embodiment, the present invention relates to a process for preparing foam board or sheet including the steps of (A) forming a foamable mixture of (1) a major amount of a styrenic polymer...
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6262136 |
Storage stable foam-forming system
An isocyanate-reactive composition containing a blowing agent that is generally a gas at ambient temperature and pressure which is storage stable is produced by including a phenol or alkylphenol...
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6258866 |
Blowing agent compatabilization
Provided herein are subcombinations from which polyurethane foams and polyurethane foams containing polyisocyanurates may be prepared. The subcombinations are unique in that they contain components...
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6245826 |
Isocyanate-based rigid foam
An isocyanate-based rigid foam comprising the reaction product of an organic and/or modified organic polyisocyanate, a resin blend and, optionally, a relatively low molecular weight chain extender...
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6242555 |
Light-stable elastomeric polyurethane mouldings and process for the production thereof
A process for the production of micro-cellular or non-cellular, light-stable elastomeric, flexible or semi-flexible polyurethane moldings which are especially suited for window encapsulation...
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6218443 |
Pentafluoropropane blowing agent-containing resin blend for use in making integral skin foams
It has been found that non-chlorinated pentafluoropropane blowing agents may be used alone or in combination with water in flexible integral skin foams. For example, foams prepared from a resin...
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6172127 |
Preparation of polyimide foam
The invention herein relates to a process of preparing a novel polyimide foam having superior heat-resistance, flame retardancy, homogeneous size and distribution of cells, and low density, wherein...
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6117917 |
Blowing agent blends and use thereof
B-side compositions comprising a polyol and a gaseous blowing agent comprising 124 dissolved in the polyol are provided, as are processes for producing closed-cell polyurethane or polyisocyanurate...
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6114402 |
Modified rigid, foamable urethane composition and method
A polyurethane composition to provide a rigid polyurethane foam suitable for use as a core material in a composite laminate and which polyurethane composition includes an additive compound or...
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