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6894139 |
Catalysts, in particular for the preparation of polyisocyanate polyadducts
Catalysts contain, as structural units, at least one tertiary amino group and at least one group which, after its decomposition, is capable of complexing or protonating the tertiary amino group.
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6740731 |
Degradation control of environmentally degradable disposable materials
The present invention is directed to a method for reducing waste accumulation by using an environmentally degradable disposable material. The disposable material, which includes a hydroxycarboxylic...
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6528549 |
Rigid polyurethane foams
Polyol blend comprising a polyester polyol, a tertiary amine catalyst and an organic carboxylic acid wherein said carboxylic acid contains at least one OH, SH, NH 2 or NHR functional group,...
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6294589 |
Polyurethane composition containing antimicrobial agents and methods for use therefor
A polyurethane composition for fabricating antimicrobial based products such as polyurethane foam carpet backing materials and carpets having a polyurethane foam carpet backing material. The...
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6278021 |
Reduced particle-size urea
A process for producing an urea preparation of reduced particle-size and narrow particle-size distribution by using an air milling process is provided. Also provided is an urea preparation of...
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6271278 |
Hydrogel composites and superporous hydrogel composites having fast swelling, high mechanical strength, and superabsorbent properties
A superporous hydrogel composite is formed by polymerizing one or more ethylenically-unsaturated monomers, and a multiolefinic crosslinking agent, in the presence of particles of a disintegrant and...
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6211259 |
Low volatile reinforcing system
The present invention includes new compositions for making polyurethane and polyurethane foam compositions. These compositions comprise the reaction product of an isocyanate A-Side and a B-Side...
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6169124 |
Inner parting agents for producing self-parting moldings made of polyisocyanate polyaddition products
In a process for producing self-releasing, compact or cellular moldings which comprise polyisocyanate polyaddition products and may contain reinforcing material by reacting a) organic and/or...
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6107355 |
Production of polyurethane foams
In a process for producing polyurethane foams, preferably semirigid polyurethane foams and flexible, semirigid and rigid polyurethane integral foams, a) at least one modified or unmodified...
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6077927 |
Process for coloring polymer resins and products thereof
A method of providing for manufacturing a colored polymer resin having the steps of: (a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene)...
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6063824 |
Microcellular urea-containing polyurethane elastomer
A microcellular PU elastomer having improved dynamic-mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and also further customary constituents has, after...
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6057376 |
Process to prepare low density porous crosslinked polymeric materials
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6046706 |
Antenna mast and method of using same
An antenna mast and method of using it relate to a retractable mast having a retractable mast having a plurality of tubular telescoping sections to enable the mast to move between a fully retracted...
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5852064 |
Foamed and cross-linked phenolic resin and method for making same
A phenolic foam having exceptional absorption capacities for pollutants such as hydrocarbons and other substances is described. The foam is hydrophobic and is capable of absorbing such substances...
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5844013 |
Hydrophilic polyurethane gel foams, particularly for treating deep wounds, wound dressing based on hydrophilic polyurethane gel foams and method of manufacture
Hydrophilic polyurethane gel foams are obtainable from a polyurethane gel defined in the description, from a water-absorbing material and from a non-aqueous foaming agent and can be used in...
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5801209 |
EPDM compositions and process for producing same
Disclosed are foamable EPDM compositions comprising EPDM, a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115 cc/100 g and a blowing agent which are advantageous for use in...
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5798533 |
Polyol compositions having good flow and water blown rigid polyurethane foams made thereby having good dimensional stability
A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability...
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5760099 |
Production of rigid or semirigid polyurethane foams and composite elements comprising such polyurethane foams
Rigid polyurethane foams, preferably semirigid polyurethane foams, are produced by reacting an organic and/or modified organic polyisocyanates with relatively high molecular weight polyhydroxyl...
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5721281 |
Flame retardant porous plastics
Opened-celled porous plastics or natural products are made flame retardant by coating the cell walls with a liquid containing carbonization auxiliaries and/or flame retardant agents. The excess...
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5705951 |
Method for correction of error signals in a signal amplification system and an apparatus used for that purpose
In a method and by an apparatus for correction of error signals and for forming of an arbitrary transfer function being independent of the quality of a payload (loudspeaker; H1) included in a...
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5700845 |
Carbon black containing EPDM compositions and process for producing same
Disclosed are foamable EPDM compositions comprising EPDM, a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115 cc/100 g and a blowing agent which are advantageous for use in...
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5696174 |
Stable and water-resistant aqueous foam composition
Stable and water-resistant aqueous foam composition containing (1) a long chain cationic organic compound and (2) a long-chain anionic organic compound in a weight ratio of from 0.05:1 to 15:1. The...
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5646195 |
Catalyst for polyurethane carpet backings and carpets prepared therewith
Polyurethane foam backed textiles, particularly polyurethane backed carpets can be prepared using a formulation including a dialkyltin sulfide catalyst. Use of the dialkyltin sulfide catalyst...
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5599851 |
Superfine microelemental biochemical mixture and foamed plastic products thereof
This invention relates to a kind of superfine microelemental biochemical mixture and its foamed plastic products. The mixture contains titanium oxide, zirconia, silica, yttrium oxide, cerium oxide,...
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5587448 |
Reaction system for producing a polyurethane and method of using same to seal a surface
This invention concerns a reaction system for producing a polyurethane having an isocyanate index value of at least 100, and a catalyzed reaction mixture thereof, having a gel time between 5 and 60...
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5561170 |
Preparation of expandable thermoplastic polymers by post-impregnation
A process for the preparation of expandable thermoplastic polymers by post-impregnation with a blowing agent in aqueous suspension in the presence of a mixture of magnesium pyrophosphate and a...
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5514723 |
Water-blown integral skin polyurethane foams and catalysts useful therein
The present invention is directed to an integral skin foam prepared by reacting an isocyanate, an isocyanate reactive component and water as the only blowing agent and to a catalyst useful therein....
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5472639 |
Electroconductive foams
A lightweight, electroconductive foam comprising an effective amount of a conductive ionic salt, a polymer capable of complexing said conductive ionic salt and an effective amount of particulate...
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5391584 |
Manufacture of rigid foams and compositions therefor
The use of a liquid for the preparation of a rigid polyurethane and/or polyisocyanurate foam by reacting a polyisocyanate and a polyol in the presence of a blowing agent characterised in that the...
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5373028 |
Polyurethane foams having reduced visible emissions during curing
In a method of preparing a poly-urethane and/or -urea foam from a formulation including (a) a polyisocyanate, (b) an isocyanate-reactive component, and (c) a visible emissions producing component,...
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5342881 |
Process for the standardization and stabilization of organic polyisocyanates and the stable products of this process
A new process for the standardization and stabilization with simultaneous increase of reactivity of organic polyisocyanates and the polyisocyanates produced by this process. A polyisocyanate is...
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5331016 |
Plastic moldings made of water-expanded polymer resin
To arrive at an economical method of producing water-expanded polymer resin moldings, it is proposed that a monomer component and a cross-linker on an acrylate basis and/or a PMMA prepolymer be...
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5308877 |
Resins with high surface areas and porosities
Organic resins with high surface areas and porosities, which are insoluble in organic solvents and contain few or no flexible groups in the resin structure, are disclosed. Also disclosed is a...
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5278197 |
Soft, flexible polyurethane foam
A soft, flexible foam characterized in having (i) a hardness, IFD 25% value, of at most 29 lbs/50 in 2 , as determined in accordance with Test B 1 of ASTM D 3574 and (ii) a density of about 0.9 to...
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5268394 |
Stabilization of polyoxyalkylene polyether polyols
The invention relates to the use of an acridans of Structure (I) as a stabilizer, preferably combined with hindered amine, phenolic, and phosphite stabilizers for stabilizing polyether polyols for...
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5256726 |
Reactive systems and a process for the preparation of polyurethane plastics
Reactive systems comprising of a specific polyisocyanate component and a reactive component for this polyisocyanate component, as well as non-reactive plasticizers and if appropriate other...
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5238969 |
Process for the preparation of charged thermosetting compounds of the polyurethane type and compounds obtained thereby
Process for the preparation of filled heat-curable compounds of the polyurethane type by reaction of condensation of the constituents of the desired compound in the presence of a pulverulent...
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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...
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5173515 |
Fire retardant foams comprising expandable graphite, amine salts and phosphorous polyols
New particularly effective fire retardent elements based on foams and expandable graphite are characterized in that they additionally contain one or more components from the group consisting of...
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5166182 |
Thermosetting plastic foams and methods of production thereof using novel blowing agents
Blowing agents and blowing agent mixtures for preparing a cellular thermosetting plastic foam comprise either (1) a non-chlorinated, partially hydrogenated fluorocarbon with the general formula H x...
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5153233 |
Stabilization of melamine and/or urea dispersions in polyols and polymer polyols
A storage stable or easily redispersible dispersion of melamine, urea or a blend thereof in a polyol, polymer polyol or a blend thereof is produced by the addition of an alkylbenzenesulfonate salt...
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5137929 |
Additives which stabilize hydrohalocarbon blowing agent in polyurethane and polyisocyanurate foam formulations during polymerization
The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of additives which decrease the formation of haloalkenes during the...
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5132040 |
Chemical blowing agent
A method for the preparation of polymeric foams which comprises reacting an organic polyisocyanate with a cyclic carbonate having at least one isocyanate-reactive substitutent attached to the...
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5114984 |
Process for producing an antimicrobially effective polyurethane
The present invention relates to a process for imparting anti-bacterial and anti-fungal properties to a polyurethane foam. Dissolving the pyrithione salt in an alkanolamine which is miscible with a...
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5032621 |
Nucleating agents for thermoplastic resins
This invention relates to the use of a special class of sulfonic and phosphonic acids, and salts of the acids, to give improved nucleation for foam extrusion of thermoplastics using either...
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5025039 |
Process for the production of molded polyurethane foams and the molded foams obtained by this process
The present invention is directed to a process for the production of molded polyurethane foams having a compact surface and a density of at least 250 kg/m 3 by the in-mold foaming of a reaction...
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5021536 |
Storage stable resin reaction mixtures, and the preparation and use thereof
This invention relates to storage stable resin reaction mixtures obtained by mixing at least one organic polyisocyanate, at least one organic compound containing at least two epoxide groups, at...
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5002830 |
Fibrous reinforced materials impregnated with low viscosity polyurethanes/urea forming components
Improved reinforced polyurethane/urea articles are made by reacting an organic polyisocyanate with low viscosity imino/enamine-functional compounds in contact with fiberous reinforcing agents.
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4990548 |
Polyurethane/urea foams employing imino/enamine functional compounds
Polyurethane/polyurea foams are made by reacting an organic polyisocyanate with resins containing imino/enamino-functional groups in the presence of blowing agents. Control of foam properties is...
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4914137 |
Method for stabilizing polyurethane foam using an additive combination of a phenothiazine and at least one co-stabilizer
This invention relates to the stabilization of polyurethane foam by using a combination of a phenothiazine with at least a co-stabilizing effective amount of a compound selected from the group...
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