Matches 101 - 150 out of 192 < 1 2 3 4 >
Match Document Document Title
5702854 Compositions and photoreceptor overcoatings containing a dihydroxy arylamine and a crosslinked polyamide  
An electrophotographic imaging member including a supporting substrate coated with at least a charge generating layer, a charge transport layer and an overcoating layer, said overcoating layer...
5693737 Water-dispersible blocked isocyanates, method of manufacture, and use thereof  
The invention relates to a blocked polyisocyanate having an NCO functionality of from 2.2 to 4.5 and an average molecular weight of 800 to 25,000 and containing (1) blocked isocyanate groups...
5691438 Blocked polyisocyanates and their use in stoving lacquers  
Polyisocyanates which have 1,2,4,-triazole-blocked isocyanate groups and a blocked isocyanate group content of 7 to 14 wt. % and which are reaction products of A) a polyisocyanate component...
5688875 Hydrophilic tetramethylxylylenecarbodiimide  
A hydrophilic tetramethylxylylenecarbodiimide represented by the following formula (1): ##STR1## wherein n is an average polymerization degree and is an integer of 1 to 30; R 1 is a residue of an...
5686013 Crosslinking agent composition comprising a diisocyanate, a diidocyanate adduct, and a triisocyanate adduct  
A magnetic recording medium, comprising a magnetic coating provided on a nonmagnetizable substrate, wherein the magnetic coating comprises a magnetic pigment dispersed in a polymeric binder, said...
5677413 Polyurethane elastomers exhibiting improved demold green strength and water absorption and haze-free polyols suitable for their preparation  
Polyurethane elastomers exhibiting improved green strength while maintaining short demold times are prepared from ultra-low unsaturation polyoxypropylene polyols containing up to 20 weight percent...
5670599 Ultra low voc polyurethane coatings  
This invention relates to improved two part, low VOC polyurethane coatings comprising a low viscosity polyisocyanate component having an isocyanate functionality greater than two and a polyol...
5663272 Allophanate-modified diphenylmethane diisocyanates and processes for their production and use  
Allophanate-modified MDI which is a storage stable liquid at 25° C. is produced by reacting a monoisocyanate and an organic material having at least two hydroxyl groups and a molecular weight of...
5654390 Trimodal molecular weight polyether polyol prepolymers  
A trimodal molecular weight toluene diisocyanate endcapped polyether polyol prepolymer is disclosed having free toluene diisocyanate below 0.5 weight percent where the three molecular weight...
5652300 Self-emulsifiable polyisocyanate mixture and aqueous coating or adhesive compostion comprising the mixture  
A self-emulsifiable polyisocyanate mixture which is of a non-yellowing type, is not deteriorated in weather resistance, has a high hardness and is quick-drying and which is obtained from a...
5648447 Elastomeric polyurethanes with improved properties based on crystallizable polyols in combination with low monol polyoxpropylene polyols  
Polyurethane elastomers of improved elongation, tensile strength and other physical properties are prepared from a polyol component containing a crystallizable polyol and from 5 to 35 equivalent...
5646230 Isocyanate-terminated prepolymers, a process of producing polyurethane/polyurea elastomers therefrom, and the resultant elastomers  
This invention relates to isocyanate-terminated prepolymers, a process for the preparation of these isocyanate-terminated prepolymers, a process for the production of...
5631341 Self-emulsifiable polyisocyanate mixture and aqueous coating or adhesive composition comprising the mixture  
A self-emulsifiable polyisocyanate mixture having a hexamethylene diisocyanate monomer content of not more than 1.0% by weight and an average NCO functionality of 2.0 to 3.7 obtained by subjecting...
5631049 Process of curing a gasket coating  
A formulation for a resilient gasket coating which is curable by ultraviolet radiation without emitting fumes into the surrounding environment. Different portions of the coating are cured by...
5621016 Polyisocyanate compositions and low density flexible polyurethane foams produced therewith  
Polyisocyanate compositions are provided which comprise the reaction product of a diphenylmethane diisocyanate composition comprising 25 to 70% by weight of 2,4'-diphenylmethane diisocyanate and an...
5610260 Polyisocyanate mixtures which are liquid at greater than 5° C  
The present invention relates to polyisocyanate mixtures which are reaction products of 4,4'-diphenylmethane diisocyanate as the isocyanate component, are liquid at greater than 5° C. and have an...
5606004 Lacquer polyisocyanates with aliphatically and aromatically bound isocyanate groups  
A process for preparing liquid lacquer polyisocyanates with aliphatically and aromatically bound isocyanate groups and an NCO content of 5 to 25 wt. % by trimerizing an isocyanate component A),...
5596064 Polyisocyanates blocked with a mixture of blocking agents  
Blocked polyisocyanates containing aliphatically and/or cycloaliphatically bound isocyanate groups blocked by a mixture of blocking agents containing A) 30 to 70 equivalent % of 1,2,4-triazole, ...
5585452 Polyisocyanate based upon 4,4'-and 2,4'-diphenyl-methane dllsocyanates and use thereof in a rim process  
A novel polyisocyanate which is liquid and room temperature stable and has an isocyanate group content of from 10 to 30% by weight is prepared by reacting: a) an isocyanate mixture of...
5567793 Urethane-free, diphenylmethane diisocyanate prepolymers and process for their production  
Allophanate-modified MDI which is a storage stable liquid at 25° C. is produced in two steps. First, a monoisocyanate is reacted with an organic material having about 1.8 or more hydroxyl groups...
5558917 Polyurethane carpet backing process based on polymeric MDI quasi-prepolymers  
This invention relates to a novel polyisocyanate based on polymethylene poly(phenylisocyanate), to a process for the production of a polyurethane backing on a substrate using this novel...
5534185 Process for the preparation of fluorochlorohydrocarbon-free low density polyurethane soft foams and soft elastic polyurethane molding foams and polyisocyanate mixtures modified with urethane groups and diphenylmethane-diisocyanate base  
Method for preparation of fluorochlorohydrocarbon-free (FCHC-free) low-density polyurethane soft-foam materials and soft-elastic polyurethane soft-foam materials as well as polyisocyanate mixtures...
5531924 Liquid urethane-containing polyisocyanate mixtures which can be used to prepare the polyurethane foam  
A composite element which comprises A) at least one top layer of polyvinyl chloride or a polyvinyl chloride-containing polymer mixture, and B) a preferably semirigid or rigid polyurethane...
5523377 Blocked polyisocyanates  
Blocked (cyclo)aliphatic polyisocyanates wherein 30 to 70 equivalent-% of the isocyanate groups are blocked with butanone oxime, 30 to 70 equivalent-% of the isocyanate groups are blocked with...
5473011 Polyisocyanate mixtures, a process for their preparation and their use as cross-linking agents in coating compositions  
The present invention relates to polyisocyanate mixtures having a) an average isocyanate functionality of at least 4.1, b) a (cyclo)aliphatically bound isocyanate group content (calculated as...
5464921 Polyisocyanate mixtures, a process for their production and their use for the production of polyurethanes  
The present invention relates to polyisocyanate mixtures which are solid below 40° C. and liquid above 125° C. and which have a) an average isocyanate functionality of at least 2.1, b) a...
5459221 Polyisocyanate compositions for the preparation of flexible polyturethane foams  
The invention provides a liquid polyisocyanate prepolymer composition which is a result of combining about 50 to 90 percent by weight of an isocyanate blend (a.) having 55 to 75 weight percent...
5444146 Polyisocyanates containing allophanate and isocyanurate groups, a process for their production and their use in two-component coating compositions  
The present invention is directed to a polyisocyanate mixture having an NCO content of 10 to 47% by weight and a viscosity of less than 10,000 mPa.s and containing isocyanurate and allophanate...
5440003 Liquid methylene diphenyl diisocyanate  
Disclosed herein are processes for the production of allophanate-modified diphenylmethane diisocyanate prepolymers and the products produced by the processes which are both stable and liquid at...
5407968 Polyether polyols, water-curable polyurethane prepolymers based thereon, and compositions containing the prepolymers  
The invention relates to a polyether polyol, a water-curable polyurethane prepolymer prepared by using the polyether polyol, and a composition containing the prepolymer. The above polyether polyol...
5387367 Nonaqueous polyisocyanate formulation  
Nonaqueous polyisocyanate formulation containing a) one or more aliphatic polyisocyanates having a mean NCO functionality of from 2.5 to 3.5 and b) an amount, which ensures that the...
5350778 Polyisocyanate based upon 4,4'- and 2,4'-diphenylmethane diisocyanates and use thereof in a rim process  
Novel liquid, room temperature polyisocyanate having isocyanate group contents of from 6 to 31% by weight, are prepared by reacting: a) a methylene-bis(phenyl isocyanate) containing 1) from...
5350825 At least partially blocked organic polyisocyanates, a process for their preparation and their use in coating compositions  
The present invention relates to organic polyisocyanates which have a content of unblocked and blocked isocyanate groups (calculated as NCO) of 5 to 20 wt.%, preferably 7 to 15 wt.%, wherein at...
5334689 Process for preparing flexible polyurethane foams  
Process for preparing a flexible foam by reacting an isocyanate prepolymer having a free NCO content of 2-15% by weight, an isocyanate prepolymer having a free content of 25-31% by weight and an...
5319053 Liquid diphenylmethane diisocyanate  
The present invention relates to a stable, liquid MDI prepolymer containing an allophanate-modified MDI, having an NCO content of 12 to 32.5% comprising a reaction product of an aliphatic alcohol...
5319008 Substantially solvent-free, stable dispersion of a bituminous material in a liquid prepolymer, and method for forming the dispersion  
A moisture-curable, substantially solvent-free and anhydrous blend of a bituminous material such as asphalt and a liquid prepolymer is disclosed, which blend when cured, results in an elastomer...
5300616 Process for isolating polyisocyanate isomers from polyisocyanate mixtures  
Polyisocyanate mixtures are isolated in pure or more concentrated form from isomeric mixtures by liquid-liquid extraction using a two-phase system. The two phases are 1) a non-polar solvent phase...
5290902 Polyisocyanates containing allophanate and isocyanurate groups, a process for their production from cyclic diisocyanates and their use in two-component coating compositions  
The present invention is directed to a polyisocyanate mixture which i) has an NCO content of 5 to 47% by weight, ii) is prepared from an isocyanate component substantially containing one or...
5288797 Moisture curable polyurethane composition  
A one-part moisture curable polyurethane adhesive composition comprises a blend of polyurethane prepolymers and one or more additives which unexpectedly improve the sag resistance and mechanical...
5274004 Process for conversion of polyurethane polymer to polyol and fresh polyurethane polymer therefrom  
A process for the recovery of scrap polyurethane polymer in the form of a polyol, and the use of said polyol to prepare a fresh polyurethane polymer. Said process involves thermally treating scrap...
5258452 Polyisocyanate mixtures, a process for their production and their use  
The present invention relates to polyisocyanates containing tertiary nitrogen with an (average) NCO functionality of 2.3 to 4.3 which, despite the presence of tertiary nitrogen and isocyanate...
5248714 Polyisocyanate composition  
A polyisocyanate composition comprising 0.1% by weight or more and less than 10% by weight of a silicate compound dissolved or dispersed into at least one kind of polyisocyanate compound selected...
5202377 Polyisocyanate mixture  
A polyisocyanate mixture which is emulsifiable in water comprising; (i) An isocyanate functional oligomer, which is the reaction product of; (a) a polyisocyanate having tertiary isocyanate...
5179187 Use of isocyanates containing urethane groups as drying agents and a process for the production of a coating composition  
The present invention relates to a process for the preparation of a coating composition by a) treating moisture-containing auxiliaries and additives at 60° to 120° C. with urethane...
5164423 Composition of flexible polyurethane foams below using reduced amounts of chlorofluorocarbone blowing agents and method for preparation  
Flexible polyurethane foams prepared from formulations requiring reduced amounts of chlorofluoro-carbon blowing agents are disclosed. The foams can be prepared without undesirable loss of physical...
5144031 Process for the production of isocyanurate polyisocyanates, the compounds obtained by this process and their use  
The present invention relates to a process for the production of isocyanurate group-containing polyisocyanates by partially trimerizing the isocyanate groups of (cyclo)aliphatic diisocyanates in...
5130205 Laminate and gas permeation module comprising two-component polyurethane adhesive  
A polyol is reacted with a polyisocyanate prepolymer to make a polyurethane. The polyol is the reaction product of trimethylol propane with ethylene oxide (1:3 molar). The polyisocyanate prepolymer...
5130366 Liquid diphenyl diisocyanate prepolymer/diphenylmethane compound compositions  
A bitumen-free liquid prepolymer composition comprising: a) from 50 to 99% by weight of an isocyanate-containing prepolymer obtained by the reaction of a stoichiometric excess of diphenylmethane...
5126379 Esters containing bonded fluorocarbon and oxypropylenealkylether groups, emulsions containing these esters and their use for the preparation of cellular plastics by polyisocyanate polyaddition  
Novel esters containing bonded fluorocarbon and oxypropylenealkylether groups and of the formula ##STR1## where Rf is straight-chain or branched, partially fluorinated or perfluorinated alkyl of 2...
5124370 Polyisocyanate mixtures containing isocyanurate groups, a process for their production and their use for the production of polyurethane foams  
Disclosed herein are liquid polyisocyanate mixtures containing isocyanurate groups and having an NCO content of 15 to 30% by weight obtainable by partial trimerization of the isocyanate groups of...
Matches 101 - 150 out of 192 < 1 2 3 4 >