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4338407 |
Stabilization of high resilience polyurethane foam
An improvement is disclosed in the preparation of high resilience polyurethane foam. The improvement resides in the use of a select reaction mixture which includes a polyol containing an...
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4337320 |
Expandable vinyl chloride resin composition
An expandable vinyl chloride resin composition for foaming under atmospheric pressure which comprises a resin ingredient comprising (A) a vinyl chloride homopolymer or copolymer having...
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4334971 |
Manufacture of resilient foams based on a melamine-formaldehyde condensate
A process for the manufacture of a resilient foam based on a melamine-formaldehyde condensate, wherein an aqueous or alcoholic solution or dispersion containing a melamine-formaldehyde...
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4334031 |
Flame-retardant polyurethane foam prepared by incorporating a graft polymer having a particle size greater than 0.5 micron
In the preparation of conventional or high resiliency flexible polyurethane flame retarded foams by reacting organic polyisocyanates with polyols containing vinylic polymers and employing flame...
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4334032 |
Foamed polymers containing low molecular weight urethane modifier compound
Foamed polymers such as polyurethanes useful, for instance, as cushioning, insulation, and in reaction injection molding to produce thin section moldings can be produced without substantial...
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4332716 |
Polymer/polyisocyanate compositions, processes for making same and processes for making polyurethane products therefrom
Novel polymer/polyisocyanate compositions made by polymerizing at least one ethylenically unsaturated monomer in situ in a blend of a first organic polyisocyanate and a stabilizer. The stabilizer...
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4327194 |
Flexible polyurethane foam prepared from a reaction mixture which _includes a polyether triol containing an effectively dispersed finely _divided solid particulate material
A select polyether polyol is used in preparing flexible polyurethane foam having desirable physical properties. The select polyether polyol is an oxypropylated, oxyethylated triol containing an...
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4326043 |
Process for the preparation of polyisocyanurate dispersions modified with halogenated alcohols and compositions prepared therefrom
Polyisocyanurate polymers are prepared by polymerization of polyisocyanates in organic solvents employing trimerization catalysts. The polyisocyanates are reacted with halogenated alcohols...
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4320208 |
Process for the production of polyurethane plastics in which polyisocyanates are reacted with reactive organic fillers comprising biomasses
This invention relates to a process for the production of optionally foamed polyurethane plastics, particularly shaped articles, using certain denatured biomasses as reactive fillers. The fillers...
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4316935 |
Polyisocyanurate foam and laminates thereof and process for producing them
A foam characterized by the presence of isocyanurate groups which is the reaction product of a polymethylene polyphenyl isocyanate, such as that of the formula: ##STR1## wherein n is an integer...
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4314034 |
Polyurea polyurethane foamed sponge with high wet strength
An open cell polyurea polyurethane foamed sponge is produced by mixing together a resin and an aqueous pahse. The resin phase consists of a prepolymer made from a hydrophilic oxyalkylene polyol...
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4309509 |
Odorant hydrophilic foam compositions
This invention relates to hydrophilic, odorant-containing foam compositions having improved release ability of the odorant abetted by incorporating the odorant into a non-volatile, water insoluble...
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4307203 |
Process for the production of polyurethane silicate foams and resinous products utilizing aldehyde-broken down alkali metal cellulose silicate polymer
Organic polyisocyanates are reacted chemically with aldehyde-broken down alkali metal cellulose silicate polymers to produce polyurethane products.
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4307200 |
Composite foamed material
A composite foamed material and a process for the production thereof are disclosed herein, the process comprising premixing expandable or expanded polystyrene beads, a binder and fragments of...
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4304872 |
Flexible polyurethane foams having substantial number of cells with internal residual cell surface of 60 to 90 percent
A novel flexible polyurethane foam has a substantial number of cells with an internal residual cell surface greater than 60% and less than 90%. The novel foams have improved vibration damping...
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4303602 |
Process for the production of composite foamed material
A composite foamed material and a process for the production thereof are disclosed herein, the process comprising premixing expandable or expanded polystyrene beads, a binder and fragments of...
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4303768 |
Process for the Production of alkall metal silicate-organic plastics
Polymerable organic compounds are emulsified with aqueous alkali metal silicate solutions then polymerized with a catalyst such as a peroxide type catalyst thereby producing an alkali metal...
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4299923 |
Alkyl-modified siloxane copolymers useful as foam stabilizers in high resilience polyurethane foam
Organosiloxane copolymers containing alkyl groups having from 5 to 20 carbon atoms that have beneficial utility as foam stabilizers in the manufacture of low density high resilience polyurethane...
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4298650 |
Phosphorescent screens
Phosphorescent screens which are useful for such purposes as intensifying screens for radiographs are comprised of a support bearing a layer of finely-divided particles of a phosphor dispersed in a...
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4296213 |
Polyurethane foams using a polyurea polymer polyol
A polyurea polymer polyol made by the reaction of a hydroxyl-containing amine, a polyether polyol of about 3,000 to 8,000 molecular weight and an organic polyisocyanate is disclosed. This polyurea...
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4288559 |
Flame resistant foam
The instant invention is directed to a process for the production of flame resistant foams by the impregnation of polyurethane foams with a dispersion consisting substantially of an aluminum...
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4286074 |
Amine-terminated graft copolymer dispersions and polyurethanes prepared therefrom
Stable graft polymer dispersions are prepared employing in situ free radical polymerization of ethylenically unsaturated monomer or monomers in an amine-terminated polyoxyalkylene polyether...
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4283500 |
Polymer/polyisocyanates
Novel improved polymer/polyisocyanate composition made by polymerizing acrylonitrile alone or with one or more ethylenically unsaturated monomers in situ in a polyisocyanate. The polyisocyanate...
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4282331 |
Polyurethane foam prepared from a copolymer/polyol composition
This invention relates to a novel process for producing polymer/polyols characterized by the use of specific amounts of particular monomer combinations and by maintaining a low monomer...
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4280979 |
Copolymers, compositions, and articles, and methods for making same
Novel polyester diols are described containing aliphatically saturated divalent diacyl moieties and olefinically unsaturated divalent diacyl moieties in a mole ratio of 0.25:1 to 3:1; and divalent...
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4276385 |
Process for preparing cold-cured molded polyurethane flexible from a high molecular weight siloxane and a solvent
Cold-cured molded polyurethane flexible foams having improved vibration damping properities are made by foaming in the presence of (1) a high molecular weight predominantly linear siloxane...
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4272619 |
Process for the production of modified polyether polyols and their use in processes for the production of polyurethane plastics
The present invention relates to a process for the production of modified polyether polyols by the radical polymerization of a mixture of acrylonitrile, styrene, a salt of an α,β-unsaturated...
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4267280 |
Controlled release pesticides and method of preparation
Pesticide polymers comprising a polymer with a macromolecular backbone and pendant groups having pesticidal groups chemically linked thereto are prepared by reacting a pesticide having a...
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4266042 |
Polyether-based polyurethane foams including a flame-retardant system containing antimony trioxide, a chlorinated paraffin and alumina trihydrate and method of preparation
Polyether-based polyurethane foams including as the flame-retardant, an antimony compound, chlorine derived from at least one chlorinated paraffin and alumina trihydrate, and the polyol used to...
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4264743 |
Polyurethane foam sealing material and process for producing the same
A flexible or semi-rigid open-cell, polyurethane foam sealing material prepared from a polyisocyanate and a polyol component, a major portion of said polyol component consisting of a polyol derived...
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4260530 |
Process for the preparation of polyurethane resins using stable dispersions as a starting component
This invention relates to a process for the preparation of a finely divided, stable and relatively low viscosity dispersion of a polyisocyanate polyaddition product and an aminoplast and/or...
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4258137 |
Rigidized open cell polyurethane foam
This invention relates to the preparation of a flexible, open cell polyurethane foam which can be rigidized by incorporating an epoxy resin into the mixture prior to foaming and, after forming a...
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4243755 |
Process for the manufacture of reinforced polyurethane foams
The invention relates to a process for the manufacture of reinforced polyurethane foams based on the reaction of organic polyisocyanates and polyols in the presence of filler dispersions. These...
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4242249 |
Polymer/polyols via non-aqueous dispersion stabilizers
This invention relates to polymer/polyols prepared from an ethylenically unsaturated monomer or a mixture of such monomers and characterized by the utilization, in the preparation thereof, of...
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4232127 |
Furan-modified isocyanurate foams
Furan-modified rigid isocyanurate foams are taught herein. The foams herein are prepared by either (1) the in situ polymerization of furfuryl alcohol and/or furfural during the foam formation...
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4230823 |
Polyurethane foams and elastomers based on modified polyether polyols
The instant invention is directed to a process for the preparation of modified polyether polyols comprising polymerizing of from 1 to 50 parts by weight of a mixture of 20 to 100% by weight (based...
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4221877 |
Modified diphenylmethane diisocyanates useful in polyurethanes or polyisocyanurates
Covers a water-modified diisocyanate mixture obtained from water-treating a diphenylmethane diisocyanate to provide a diisocyanate mixture comprising 3-25 percent by weight of diphenylmethane...
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4216294 |
Unsaturated polyester resin foams and methods of preparation
Unsaturated polyester resin foams or cellular structures of varying low densities are prepared quickly at ambient temperatures from an admixture which comprises a liquid unsaturated curable...
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4214055 |
High resilience flame-retardant polyurethane foams based on polymer/polyol compositions
Novel high resilience (HR) urethane foams are prepared from tolylene diisocyanate and novel polymer/polyol compositions made with acrylonitrile and vinylidene chloride monomers. The...
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4212953 |
Fire-retardant polyurethane foams
Production of urethane foams of increased fire resistance by mixing an ethylenic, e.g. allyl or vinyl, phosphorus compound with a polyol and polymerizing the polyol with polyisocyanate while...
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4211849 |
Process of producing cross-linked urethane-group comprising foams of open-cell structure
In the disclosed process of producing resilient open-celled, cross-linked polyurethane foams, by foaming polyol, polyisocyanate, catalyst and blowing agent, the foaming is effected in the presence...
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4210727 |
Graft copolymers from unsaturated monomers and peroxy di-ester polyols and polyurethanes prepared therefrom
Graft copolymers are prepared by the polymerization of an ethylenically unsaturated monomer, or a mixture of such monomers, in the presence of a peroxy di-ester polyol. Presence of the peroxy group...
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4210728 |
Preparation of high resiliency polyurethane foams
A reactive polyol composition useful in the preparation of high resilient polyurethane foams comprising a polyol and from 0.5% by weight to 5.0% by weight of a reactive diamine represented by the...
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4206255 |
Coating compositions based on a mixture of aqueous polyurethane dispersions
This invention relates to coating compositions based on aqueous polyurethane dispersions and to the use of these coating compositions for the production of top coats or finishes on PVC. The coating...
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4205138 |
Polyurethane foams and elastomers prepared from low molecular weight polyhydroxyl compounds
This invention relates to an improved process for the production of a mixture of low molecular weight polyhydric alcohols, hydroxy aldehydes and hydroxy ketones by condensing formaldehyde hydrate...
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4201846 |
Dimensionally stable polyurethane foam
The invention disclosed relates to hydrophilic polyurethane foam which exhibits improved tensile and tear properties and reduced shrinkage upon drying as a result of incorporation of substantially...
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4198488 |
Polymer-polyols and polyurethanes based thereon
Fluid, stable polymer-polyols are provided which consist of an organic polyol medium and an interpolymer of a minor amount of polymerized ethylenically unsaturated dicarboxylic acid anhydride, such...
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4192727 |
Polyelectrolyte hydrogels and methods of their preparation
A predetermined mass comprising an acrylate salt and acrylamide is exposed to a controlled intensity and dose of ionizing radiation effecting simultaneous cross-linking and polymerization thereof...
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4192627 |
Apparatus for generating electrical power
A continuous water flow from selected ones of a plurality of reservoirs passes through turbines or the like within an hydroelectric power station to produce electrical power. The reservoirs are...
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4190712 |
Low density energy management urethane foam
An impact energy-absorbing, low density urethane foam for use in automobile bumpers has good moldability and is relatively temperature insensitive, i.e. gives approximately the same physical...
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