Matches 1 - 50 out of 162 1 2 3 4 >
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6924322 Thio-,amine-,nitro-,and macrocyclic containing organic aerogels & xerogels  
An organic aerogel or xerogel formed by a sol-gel reaction using starting materials that exhibit similar reactivity to the most commonly used resorcinol starting material. The new starting...
6828354 Hydrophilic open-cell, elastic foams with a melamine/formaldehyde resin base, production thereof and use thereof in hygiene products  
Hydrophilic open-celled resilient foams comprising melamine-formaldehyde resins, obtainable by (a) heating and crosslinking an aqueous solution or dispersion each containing at least a...
6087407 Flexible aerogel composite for mechanical stability and process of fabrication  
A flexible aerogel and process of fabrication. An aerogel solution is mixed with fibers in a mold and allowed to gel. The gel is then processed by supercritical extraction, or by air drying, to...
5338819 Solid isocyanate derivatives useful in one component polyurethane adhesives  
Solid isocyanate-terminated prepolymer powders useful in preparation of films, coatings, and one-component adhesives are prepared by reacting a low molecular weight di- or polyisocyanate with a...
5232955 Process for producing a high strength artificial (cast) stone with high permeability and filter effect  
The invention relates to a process for producing a highstrength a furan stone with high permeability and filtering effect mainly for protecting deep-drilled wells yielding mineral oil, natural gas...
5190985 Stable aminoplast cellular foams and the process for their manufacture  
Stable, emission-free, low-shrinkage, fireproof aminoplastic cellular foams are obtained by using an unsaturated, halogenated polyalcohol in the resin precondensate constituent and a...
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...
4986908 Organic-based porous microspheres for HPLC  
Porous organic microspheres for use in HPLC are formed by coacervating a colloidal silica sol in a uniform mixture of the sol and a polymerizable organic material. The silica particles which formed...
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...
4753746 Urea-formaldehyde foam detergent and method of manufacture using a thixotropic agent  
The invention is directed to a detergent and a method of producing the same. The detergent is for textile surfaces and especially for textile floor coverings. The detergent includes a pulverized,...
4708967 Thermosetting resin binder particles and methods for making waferboard  
Spray dried thermosetting resin powders in an intermediate polymeric stage are produced in the form of hollow, thick-walled, macrospherical particles having a bulk density greater than about 35...
4655952 Detergent and method for producing the same  
The invention is directed to a detergent and a method of producing the same. The detergent is for textile surfaces and especially for textile floor coverings. The detergent includes a pulverized,...
4604448 Moulding compositions from melamine-formaldehyde resoles  
A moulding composition which forms stable, durable mouldings which are color stable, have good water resistance and can be glass clear and fire-resistant, comprises a melamine-formaldehyde resole...
4576972 Closed cell phenolic foam  
This invention relates to the manufacture of foam from phenolic resins and to the foam so produced. In order to overcome some of the limitations of the prior art closed cell phenolic foams, we have...
4544676 Sound-insulating leather powder compositions  
The invention relates to new sound- and heat-insulating compositions, which comprise a finely dispersed leather powder of animal origin, a phenoplast resin or an aminoplast resin and optionally,...
4540717 Resilient foam based on a melamine-formaldehyde condensate  
A resilient foam, based on a melamine-formaldehyde condensate, which exhibits a number of important performance characteristics, namely: (a) low bulk density (b) low heat conductivity (c)...
4537913 Method of preparing a urea-formaldehyde combination foam that is low in formaldehyde  
A U.F. foam that is diamensionally stable, but low in formaldehyde, was made by adding to a conventional solution of a urea formaldehyde resin precondensate, before foaming, up to 50% urea,...
4530940 Stabilized melamine resin foams  
Stabilized melamine resin foams contain, as a stabilizer, a copper or iron compound in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine resin, of Cu or Fe,...
4522878 Material having high mechanical strength and density close to unity, the manufacture and uses thereof  
A material with high mechanical strength and a density close to 1 is obtained by: (a) dispersing on weight basis 10-15% of a melamine-formol resin, 10-50% of hollow microspheres, and optionally...
4490486 Formaldehyde immobilization method  
Residual formaldehyde contained in urea formaldehyde structures is immobilized by subjecting the structure to a gaseous mixture of a carrier/penetrating gas and a reactive gas chosen from the group...
4489175 Method of producing a urea formaldehyde combination foam with a low content of formaldehyde  
To obtain a UF foam which is low in formaldehyde, yet is dimensionally stable, up to 96% urea is dissolved in an approximately 10 to 30% aqueous extract of an alkyl, aryl or alkaryl sulphonic acid,...
4480055 Process for manufacturing modified amino-resin products  
Amino-resin products, which include aminoplast foams, can be modified by reacting an aminoplast precondensate, which contains an excess of formaldehyde or to which supplemental formaldehyde or...
4467054 Foams based on low formaldehyde-emission urea-formaldehyde resin and process for their preparation  
Composition based on a urea-formaldehyde polycondensate, suitable for the preparation of solid foams to be used as thermal insulating materials, characterized in that said composition contains...
4403013 Thermosetting resin glues foamable to high density  
A glue foamable to high density comprises an aqueous alkaline thermosetting resin and a surfactant comprising (1) a fatty acid amide of the alkanol-amines or (2) a tertiary amine oxide used in...
4390643 Process for producing amine formaldehyde resin foam  
A process for producing amine formaldehyde resin foam by using a precondensate for the amine formaldehyde resin, a foaming agent, a surfactant and a curing agent is disclosed. Said process is...
4366264 Use of calcium metasilicate (wollastonite) as a formaldehyde suppressant for urea formaldehyde resins  
Formaldehyde suppression is accomplished in urea formaldehyde foamed insulation by adding, prior to the foaming, a small but effective amount of a formaldehyde off-gassing suppressant, which is...
4356275 Aminoplast foams  
Aminoplast foams of hardened reaction products of aldehydes and at least bifunctional modified α,ω-ureas which contain at least one ether, thioether, acetal, ester, ester amide and/or carbonate...
4346181 Method of reducing formaldehyde emissions from formaldehyde condensation polymers  
A method of reducing the formaldehyde emissions from formaldehyde condensation polymers is disclosed. A substance having two or more amide linkages, such as a polyacrylamide polymer is incorporated...
4345061 Process for the preparation of phenol-urea-formaldehyde condensation products  
This invention relates to cellular plastic compositions of condensation products of phenol-urea and formaldehyde useful for thermal and acoustical insulation and methods for their preparation in...
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...
4307201 Highly adsorptive macroporous polymers  
A method for preparing macroporous aminotriazine-aldehyde resins by reaction in the presence of an acid catalyst and a miscible porogen. The resin product has high surface area and porosity and...
4299925 Resin foams  
Here is described the manufacture of a cured urea/formaldehyde resin foam having a shrinkage on drying of less than 20% by volume, by a method which includes the step of producing a homogeneous wet...
4291128 Process for making urea-formaldehyde insulation  
A process and apparatus are provided for making desired shapes of urea-formaldehyde suitable for use as insulation from urea-formaldehyde foam. Fluid urea-formaldehyde foam (A) is formed into...
4273887 Process for preparation of foams by condensation reactions  
An improved process for the production of thermoset foams having a predetermined shape by subjecting a reactive amine to a condensation reaction in an enclosed mould cavity, wherein the reaction is...
4273883 Urea-formaldehyde polymers having reduced formaldehyde emission and cellular urea formaldehyde foam which is resistant to acid-induced hydrolysis  
Urea-formaldehyde polymers having reduced formaldehyde emissions are produced by incorporating in the prepolymer an aromatic substance incapable of reacting with urea formaldehyde in alkaline media...
4267277 Method of producing urea-formaldehyde resin and foam having reduced formaldehyde emission  
A method for producing stable urea-formaldehyde polymers which have reduced aldehyde vapor emissions during their production and use is disclosed, such urea-formaldehyde polymers particularly...
4264742 Opacifying agents and process for production  
Opacifying agents of improved structural integrity and light scattering ability are disclosed. These agents are composed of hollow, substantially spherical agglomerates having discontinuous walls...
4256845 Porous sheets and method of manufacture  
A porous thermoplastic sheet is formed by adding a material to a polymer latex to passivate the aqueous phase of the latex. An additional material of a preselected particle size, corresponding to...
4239646 Microspheric opacifying agents and method for their production  
Microspheric opacifying agents are provided by admixing an aqueous, partially condensed, aldehyde condensation product with an oily material containing an emulsifying agent thereby forming a...
4239881 Phenal-urea-formaldehyde condensation product  
This invention relates to cellular plastic compositions of condensation products of phenol-urea and formaldehyde useful for thermal and acoustical insulation and methods for their preparation in...
4234698 Method of making cured aminoplast foam  
A method of making a cured foamed amino formaldehyde product utilizes an amino formaldehyde precondensate of water content below 20% by weight in order to obtain a less brittle product. A liquid...
4225680 Urea formaldehyde foam with low shrinkage  
This foaming system includes a foaming agent solution and a resin solution. The foaming agent includes the relative amounts of 15 to 30 parts by weight of a salt of an alkyl diphenyl oxide...
4216295 Foamable resole resin composition  
This invention relates to an improved foamable resole resin composition comprising a resole resin, a blowing agent and a surfactant wherein said improvement comprises incorporating a particular...
4208487 Novel frother composition for beneficiation of mineral ores  
A combination of conventional frothing agent and a particular amino-aldehyde resin provides better recovery of mineral values than can be obtained with either agent alone.
4199547 Device for producing foam plastics  
The present invention relates to a method for producing foam plastics and a device for effecting same. The method resides in foaming with continuous and proportioned injection of all components...
4192923 Amino resin foam, one-phase solution foam precursor and method of producing foam  
Amino resin foams of the urea-formaldehyde or urea-melamine-formaldehyde type formed from a one-phase solution of methylene chloride solvent, propylene glycol co-solvent, catalyst and polymer...
4176217 Process for the manufacture of foamed plastics with improved combustion characteristics  
Production of foamed plastics with improved combustion characteristics by condensing aqueous solutions of aminoplast precondensates with at least bifunctional organic isocyanate whereby an acid...
4152497 Compounds containing the 2,2,2-trichloroethyl group as flame retardants for polyurethanes  
Flame retarded polyurethane foams are prepared from a reaction mixture comprising as the flame retardant additive a compound containing 2,2,2-trichloroethyl group.
4140661 Foam producing method  
This invention relates to methods and apparatus for successively dispensing predetermined quantities of urea formaldehyde foamed resin mixture having as constituents a resin component and a...
4119757 Floral display blocks of urea-formaldehyde foam  
Hydrophilic floral display foam blocks are prepared from frothed urea-formaldehyde, and wherein the urea-formaldehyde contains an alkyl-aryl sulfonate, and wherein the alkyl-aryl sulfonate has been...
Matches 1 - 50 out of 162 1 2 3 4 >