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5118722 |
Method of producing elastic foams having a base of polyurethane by microwave foaming
A method of producing elastic foam having a base of polyurethane, in particular for use in the field of automobiles for sound damping. Allows production of foam parts directly in a desired shape in...
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5115073 |
Rapidly crystallizing polyurethane systems
The present invention is directed to a polyurethane system containing isocyanate groups prepared by reacting A) 70 to 98 parts by weight of at least one polyester diol having a melting point of...
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5114989 |
Isocyanate-terminated prepolymer and polyurethane foam prepared therefrom
This invention relates to an isocyanate-terminated prepolymer prepared from a polyisocyanate comprising 4,4'-methylene diphenyldiisocyanate and polyoxyalkylene polyol wherein the polyol has an...
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5114982 |
Acoustic scattering and high reflection loss compositions
An acoustic foam composition comprising (a) about 1 equivalent of a polybutadiene based polyol (b) about 2.5 to 7.5 equivalents of a diisocyante (c) or low molecular weight diol which gives a...
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5112876 |
Polyether polyol and rigid polyurethane foam
The present invention relates to a polyether polyol which is prepared by (i) reacting 3.0 to 4.0 molecular equivalents of ethylene oxide with one molecular equivalent of 2,3- or...
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5107068 |
Polyurethane resin and utilization thereof
The present invention relates to a novel polyurethane resin, a foam prepared from the resin, a preparation process of the foam, and preparation process of a rigid polyurethane foam composite having...
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5106875 |
Copolymers and their use as auxiliaries and/or additives in formulations for the preparation of polyisocyanate addition polymerization products
This invention deals with novel copolymers having K values from 5 to 80 prepared by the radical polymerization of: (A) 20 to 80 weight percent, based on the total weight of (A) and (B), of at...
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5104907 |
Process for producing high resilience polyurethane foam
A process for producing a high resilience polyurethane foam by reacting a polyol with a polyisocyanate in the presence of a catalyst, a blowing agent, and a foam stabilizer; said polyisocyanate...
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5100927 |
Process for producing rigid polyurethane foam
A process for producing a rigid polyurethane foam by use of a decreased amount of a CFC blowing agent and an increased amount of water used as a blowing agent, maintaining a high degree of heat...
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5100926 |
Process for producing polyurethane
Disclosed herein is a process for producing polyurethane moldings having good physical properties and good receptivity of electrostatic coating, said process comprising reacting a polyoxyethylene...
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5098984 |
Isocyanate terminated prepolymers and the use thereof in a rim process
The present invention is directed to a novel prepolymer and the use thereof in a RIM process. The prepolymer is an isocyanate terminated prepolymer having an isocyanate group content of from about...
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5096934 |
Packaging material containing inherently antistatic polymeric foam and method for use thereof
Packaging materials containing inherently antistatic foams and a method of using the foams are disclosed. The foam used is a polyether polyurethane foam prepared from an isocyanate containing...
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5096933 |
Process for the preparation of polyurethane rigid foams having a low thermal conductivity and their use
The present invention relates to a process for the preparation of polyurethane rigid foams having a low thermal conductivity, comprising reacting: a) organic and/or modified organic...
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5093379 |
Heat stable polyurethane foams
Low density polyurethane foams having improved resistance to degradation of properties of compression set and flexibility when exposed to elevated temperatures and pressures are made by reacting a...
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5093376 |
Method for the preparation of flexible polyester polyurethane foams
A method is disclosed for the preparation of flexible polyester polyurethane foam by reaction of at least difunctional polyesterols with at least difunctional organic isocyanates in the presence of...
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5091436 |
Reinforced foam composites comprising hydroxy-containing vinyl ester resin
There is disclosed a polyurethane/unsaturated polyester hybrid foam of the rigid type prepared from novel components including not only polyol and polyisocyanate but also a unique...
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5086150 |
Process for the production of PUH elastomer threads and films resistant to light and exhaust gases and elastomer threads having the required composition
This invention relates to a process for the production of light resistant and exhaust gas resistant PUH elastomer threads and films based on segmented polyurethane ureas which are based on...
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5086084 |
Polyvinyl chloride/polyurethane hybrid foams
Disclosed is a foamed polymeric material comprising a continuous phase of polyurethane having solid polyvinyl chloride particles dispersed therein. The material preferably comprises about 100 parts...
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5082868 |
Method for the preparation of polyurethane foams
A method for the preparation of rigid polyurethane and/or polyisocyanurate foams is disclosed. The foams are produced by the reaction of at least difunctional polyisocyanates, a polyol with 3 to 8...
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5081180 |
Graft prestabilizing and stabilizing copolymers and their preparation, process for obtaining dispersions of polymers/polyols and process for obtaining polyurethane foams
Prestabilizing copolymers comprising the product of the in situ reaction of a mixture of ethylenically unsatured monomers containing at least one mono-unsaturated monomer containing no groups which...
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5071887 |
Polyurethane elastomer
A polyurethane elastomer produced by reaction of a polyisocyanate with an amine-type polyol and another type polyol, the polyisocyanate being an isocyanurate-modified hexamethyelene diisocyanate;...
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5071881 |
CO.sub.2 blown integral skin foams
A process for making integral skin foams which comprises reacting into a closed mould: A) an organic polyisocyanate B) an isocyanate-reactive composition comprising: (i) a catalytically...
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5068280 |
Polyurethane and/or polyurea dispersions in active hydrogen-containing compositions
Polyurethane and/or polyurea dispersions are prepared by reacting certain coreactants with a polyisocyanate in the presence of a preformed polyurethane and/or polyurea dispersion. The resulting...
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5061737 |
Filling material
A filling material for pillows or the like composed of a homogeneous mixture of polyurethane foam chips and lengths of polyester fiber. The foam chips may constitute 70 to 50 percent and the fiber...
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5059637 |
Endothermic fire protective material
A water-base endothermic fire protective material comprising a heat curable thermosetting resin, inorganic fibers, an endothermic inorganic filler, and thermoplastic binder resin is disclosed. The...
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5059630 |
Methods for manufacture of porous resin moldings, ultrafine fibers and ultrafine fiber nonwoven fabrics
This invention relates to methods for porous resin moldings, for ultrafine fibers for ultrafine fiber nonwoven fabrics. In essence, the invention comprises providing a molding, spun fiber or crude...
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5059629 |
Biocidal foams
A biocidal foam product comprising a foam having incorporated therein a water insoluble thermoplastic copolymer consisting of an alpha olefin and an alpha, beta-ethylenically unsaturated carboxylic...
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5036110 |
Impervious resilient membrane and hydropneumatic accumulator fitted with that membrane
An impervious resilient membrane for fitting a hydropneumatic accumulator and consisting of a film having a thickness of 10-200 microns constituted by a graft polymer formed by the reaction of...
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5028637 |
Isocyanate reactive mixture and the use thereof in the manufacture of flexible polyurethane foams
The present invention is directed to a reactive mixture for use in preparing a flexible polyurethane foam and to the foams produced therefrom. The reactive mixture broadly comprises an isocyanate...
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5013766 |
Closed cell, rigid polyurethane foam
The present invention is directed to the discovery that relatively long chain polyols, which are typically used to produce flexible foams, can be used to produced closed cell rigid polyurethane foams.
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5010117 |
Flexible polyurethane foams prepared using low unsaturation polyether polyols
Flexible polyurethane foams are prepared from poly(propylene oxide) polymers having low levels of monofunctional impurities. The resulting foam has improved processing characteristics and...
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5010114 |
Microsuspension polymerization
Method for polymerizing a monomer suspended in water which comprises: Preparing a polymerization mixture of a water immiscible, liquid, ethylenically unsaturated monomer, a polyisocyanate and an...
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4994503 |
Particulate polymer and polymer compositions therewith
This invention relates to a composition comprising a particulate polymer dispersed in a continuous phase and a process for preparing the particulate polymer. The particulate polymer is...
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4994540 |
Sag resistant, unfilled, low viscosity urethane structural adhesive
A two component urethane structural adhesive formulation was developed containing a multi-functional aromatic amine terminated polyether as part of the curative component. The adhesive of the...
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4994502 |
Process for the preparation of integral skin polyurethane steering wheels
An integral skin polyurethane steering wheel is prepared by reacting (a) a mixture of a graft polymer dispersion in a polyol or a polyol mixture (b) an organic polyisocyanate selected from the...
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4985467 |
Highly absorbent polyurethane foam
A highly hydrophilic polyurethane article, which is the skeletal network of a cellular polyurethane foam subjected to a reticulation process wherein the polyurethane contains up to 100 parts of a...
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4966920 |
Smoke and toxic gas suppressant composition
The present invention provides a composition comprising a combustible material containing urethane linkages; and as a smoke and toxic gas suppressant, a polyester which has an acid value below 30...
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4952610 |
Sound damping composition and method of using the composition
The invention concerns constrained layer sound damping. A composition and a laminated structure are provided for the reduction of noise coming from housings such as oil pans for automobiles. The...
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4950694 |
Preparation of polyurethane foams without using inert blowing agents
A process for making low density and optionally low resilience, soft, flexible polyurethane slabstock foam having a substantially open cell structure without crushing, without requiring auxiliary...
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RE33291 |
Process for the preparation of white graft polymer dispersions and flame-retardant polyurethane foams
White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions...
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4940844 |
Polyol-alkali metal silicate emulsion
A stable polyol-alkali metal silicate emulsion is produced by mixing and emulsifying an aqueous alkali metal solution, a polyol and an organic compound that will cause the aqueous alkali metal...
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4939182 |
Melamine-alkanolamine condensates and polyurethanes prepared therefrom
Condensates of certain amino-substituted s-triazines, formaldehyde and alkanolamines are disclosed. These condensates can be used, with or without alkoxylation, in forming polyurethanes having...
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4931479 |
Foam in place conductive polyurethane foam
An electrically conductive elastomeric foam for use in EMI/RFI shielding applications, especially as a gap filler or caulk. The foam is based upon a polyurethane system wherein the electrically...
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4931483 |
Polymer/polyol composition, processes for making the same and a polyurethane therefrom
Polymer/polyol compositions, obtained by polymerizing, in situ in a polyol, one or more ethylenically unsaturated monomers comprising an alpha-olefin containing at least 5 carbon atoms and/or an...
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4929646 |
Polyurethane foam prepared using high functionality cell openers
Flexible polyurethane foams are prepared using certain high molecular weight, high functionality poly(oxyethylene) compounds as cell openers and softeners. These high functionality polyether...
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4925881 |
Heat resistant foamable thermosetting resin systems
A foamable thermosetting resin system is disclosed comprising: (a) about 50 to about 85 weight percent, based on the weight of the composition, of a trimerisable polyisocyanate; (b) about 5...
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4923903 |
Dyed aqueous air foams
Air is mechanically entrained in a dyed or colored, aqueous solution comprising surfactant, poly(oxyalkylene) polyisocyanate prepolymer and the reaction product of said prepolymer and one or more...
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4906673 |
Polyurethane composition
A composition capable of providing a polyurethane resin having an improved lipophilic property which comprises an organic polyisocyanate compound, and a polyol component containing a polyether...
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4894403 |
Polyisocyanate compositions containing rigid compounds or polymers, and polyurethanes prepared therefrom
Polyisocyanates containing dissolved or colloidally dispersed polymers containing rigid moieties are disclosed. Included among the dissolved or colloidally dispersed polymers are polymers...
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4892893 |
Flame retardant polyurethane foams resistant to cigarette smoldering ignition
The invention pertains to flame retardant flexible polyurethane foams resistant to cigarette smoldering after being subjected to flex fatigue, prepared by reacting a conventional polyether polyol,...
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