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5936055 |
Acid functionalized polyurethane adducts
Disclosed is an acid-funtionalized polyurethane adduct and a process for the preparation of such adduct. The adduct having a linear or preferably branched structure comprises a plurality of...
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5936025 |
Ceramic polymer composite dielectric material
A shock resistant dielectric material comprising TiO 2 particles disped in a matrix material which is (1) the polyurea reaction product of a poly(tetramethylene ether)glycol-di-p-aminobenzoate...
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5919568 |
Powder coating and its use for coating heat-resistant substrates
A power coating and a substrate coated with the coating are provided, wherein the coating contains a mixture of A) a pulverulent polyisocyanate component which is a solid at temperatures of less...
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5908913 |
Process for the continuous production of polyurethane and polyurethane urea prepolymers
The invention relates to the continuous production of polyurethane and polyurethane urea prepolymers by reaction of polyisocyanates with isocyanate-reactive compounds in a mixing nozzle.
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5908894 |
Thermoplastic polyurethanes and their preparation
Thermoplastic polyurethanes are prepared by reacting (a) isocyanates with (b) compounds reactive toward isocyanates, in the presence or absence of (c) chain extenders, (d) catalysts and (e)...
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5877261 |
Crosslinking of acrylate hot-melt pressure-sensitive adhesives
The use of isocyanates which are free from blocking agent for the chemical/thermal crosslinking of hot-melt pressure-sensitive acrylate adhesives (hot-melts).
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5869566 |
Rapid drying, isocyanate cured coating composition with improved adhesion
A coating composition contains an active hydrogen group-containing polymer (e.g., polyol and/or polyester) and a polyisocyanate curing agent. The polyisocyanate curing agent contains (i) at least 5...
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5866651 |
Hydroxycarbamoylalkoxysilane-based poly(ether-urethane) sealants having improved paint adhesion and laminates prepared therefrom
The present invention pertains to moisture curable sealant compositions based on alkoxysilane functional poly(ether-urethane)s prepared from hydroxycarbamoylalkoxysilanes which provide improved...
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5866668 |
Heat curable composition
An object of the invention is to provide a heat curable composition having both of an excellent storage stability and low-temperature curability. The heat curable composition of this invention...
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5863980 |
Preparation process of polyurethane prepolymer, preparation process of aqueous dispersion obtained therefrom, and use thereof
A process for preparing a polyurethane prepolymer containing carboxylic group(s), or both carboxylic group(s) and double bond(s), which comprises the steps of 1) preparing a diol or triol monomer...
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5859164 |
Uretdione-functional polyaddition compounds, a process for their preparation, and their use
Uretdione-functional polyaddition compounds of the formula: ##STR1## where: ##STR2## R 1 is R or linear, branched or cyclic alkylene radicals of 2-16 carbon atoms, R 2 and R 3 are identical or...
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5856420 |
Bis(isobutyraldimine) of 1,4-diaminobutane in HDI trimer and biuret-based coatings
Disclosed are new coatings compositions based on an HDI isocyanurate or biuret polyisocyanate and a bis(imine) reaction product of a diaminoalkane containing between two and five carbon atoms with...
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5852101 |
Powder coating compositions and their use for coating heat-resistant substrates
The present invention relates to a powder coating composition for the production of non-yellowing flexible coatings which is solid below 30° C. and liquid above 120° C. and contains a mixture of ...
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5847068 |
Cholesteric copolyisocyanates
Cholesteric copolyisocyanates with repeating units of the formulae: ##STR1## and, where appropriate, of the formula ##STR2## where R 1 is a chiral aliphatic or aromatic radical, R 2 is a...
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5847067 |
Uretdione-functional polyisocyanates, a process for their preparation, and their use
Urea- and uretdione-functional polyisocyanates having the following formula (I): ##STR1## where ##STR2## n is an integer of from 1 to 20; R 1 , R 3 =not more than one linear or branched...
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5847044 |
Polyurethane powder coating compositions which have a low stoving temperature
The present invention relates to a polyurethane powder coating composition containing A) a binder component which is solid below 40° C. and liquid above 130° C. and has an OH number of 25 to...
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5840822 |
Mono(hydroxyalkyl)urea and oxazolidone crosslinking agents
Mono(hydroxyalkyl)urea and 2-oxazolidone crosslinking agents and compositions which utilize such crosslinking agents are disclosed. The mono(hydroxyalkyl)urea crosslinking agents contain a single...
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5837796 |
Polyisocyanates containing isocyanurate groups and prepared by trimerizing alkyl-substituted cycloaliphatic diisocyanates
The present invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerizing a portion of the isocyanate groups of an organic polyisocyanate component...
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5830943 |
Process for the preparation of a modified polymer for powder paints
The invention relates to a process for the preparation of a modified polymer by reaction between a reactive polymer and at least a compound containing two or more functional groups. The polymer,...
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5827919 |
Fluorourethane additives for water-dispersed coating compositions
Fluorourethane additives for water-dispersed coating compositions comprising the product of the reaction of 1) at least one diisocyanate, or polyisocyanate or a mixture of polyisocyanates...
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5786419 |
Powder coating composition and its use for the preparation of matte coatings
The present invention relates to a powder coating composition for the production of matte coatings, containing A) a hydroxyl group-containing component, B) an addition polymerization compound...
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5772790 |
Methods and compositions for removing HMPUR residues
A method and a composition for removing HMPUR adhesives having isocyanate groups available for reaction are provided. The composition comprises an amine additive capable of reaction with isocyanate...
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5770661 |
Polycarbodiimide derivative and process for producing the same
A polycarbodiimide compound is reacted with an organic compound having at least two amino groups in the molecule. A polycarbodiimide compound is reacted with an amine compound having a silicon atom...
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5760128 |
Process for the production of a multi-layer finish and a water-borne coating
The invention relates to a process for the production of multi-layer finishes in which the base coating contains crosslinked polymer microparticles which are obtainable by (A) reacting a...
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5747167 |
Process for making molded polyurethane laminate articles
The subject invention pertains to unique methods for producing strong, multiple-layer polyurethane articles at low cost. The methods of the subject invention permit the production of highly...
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5744542 |
Emulsifiers and their use in water dispersible polyisocyanate compositions
An aqueous two-component polyisocyanate coating composition is based on an essentially isocyanate-free emulsifier that comprises the reaction product of: (i) an isocyanate and (ii) a member...
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5739249 |
Chlorine-free multifunctional resins for paper finishing
The invention relates to a new process for the preparation of cellulose-containing material provided with a dry-strength and wet-strength finish and/or sized, characterised in that the...
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5736193 |
Solderable wire-coating compositions and process for the continuous coating of wires
The present invention relates to solderable wire-coating compositions based on hydroxyl group-containing polyesters, blocked polyisocyanates, organic solvents and catalysts, which are characterized...
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5733538 |
Surface-modifying copolymers having cell adhesion properties
A hemocompatible surface-modifying additive is provided for modifying polyurethane or polyurethane urea substrates. The additive has a polyurethane or polyurethane urea hard block or an alternative...
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5733966 |
Polyurethane contact adhesives with improved temperature resistance properties
The present invention relates to highly elastic polyurethane contact adhesives, a process to coat substrates with these contact adhesives, and the coated substrates produced by this process. This...
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5734076 |
4,4'-methylene-bis-(3-chloro-2,6-dialkylphenylisocyanates)
The 4,4'-methylene-bis-(3-chloro-2,6-dialkylphenylisocyanates) of the general formula ##STR1## are new polyisocyanates for the production of PU systems with high chemical stability and good thermal...
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5731388 |
Photocurable resins for stereolithography and compositions containing same
Photocurable resins containing unsaturated urethane of a specified form and vinyl monomer which is N-(meth)acryloylmorpholine or its mixture with di-ol di(meth)acrylate at a rate within a specified...
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5728340 |
Process for polyesterurethaneurea thin-walled articles
Certain polyester-based polyurethaneureas in solutions of organic solvent at a 12 to 20% concentration are particularly suited for use in a mandrel-dipping process for producing thin-walled elastic...
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5723534 |
Two part polyurethane-based adhesive system
A two part polyurethane adhesive system and method of using the adhesive to bond polyurethane foams, polystyrene foams, and other substrates. The first part of the adhesive system is a hydrophilic...
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5723562 |
Process for polymerization reactions with functionalized peroxides
Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form...
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5721286 |
Method for curing polymers using variable-frequency microwave heating
A method for curing polymers (11) incorporating a variable frequency microwave furnace system (10) designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity...
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5719237 |
Coating composition utilizing non-polymeric carbamate-functional compound
Coatings are described derived from a curable coating composition comprising: (a) a non-polymeric organic compound having a molecular weight of from 75 to 2000 comprising a plurality of...
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5710210 |
Process for polymer reactions with functionalized peroxides
Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form...
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5707941 |
Polyurethanes suitable as coating materials
Polyurethanes suitable as coating materials or components thereof are essentially composed of A) a 1 ) from 40 to 100 mol % of bis(4-isocyanatocyclohexyl)methane, the trans/trans content of...
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5708073 |
Non-aqueous, base-degradable polyurethane
The present invention is directed to a non-aqueous, base-degradable polyurethane. The polyurethane is prepared by reacting an organic polyisocyanate with a hydroxyl group containing hydrophilic...
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5708119 |
Perfluoroalkyl sulfide, sulfone, polysulfone and polysulfide diols
Bisperfluoroalkyl-substituted diols containing sulfide, sulfone or polysulfide linkages and a method for making them are described. These diols can react with isocyanates to form urethanes;...
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5703193 |
Removal of unreacted diisocyanate monomer from polyurethane prepolymers
A process for reducing the amount of residual organic diisocyanate monomer in a polyurethane prepolymer reaction product mixture which comprises distilling the polyurethane prepolymer reaction...
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5698607 |
Tertiary diamine, its use as catalyst, and process for preparing tertiary diamines
Tertiary diamines having two saturated heterocyclic rings joined by an aliphatic carbon chain, of the general formula ##STR1## in which each A is a two- to four-membered aliphatic carbon chain...
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5693685 |
Thermal insulator and method for producing the same
A thermal insulator of the present invention includes a foam containing solidified CO 2 gas. A method for producing the thermal insulator includes the steps of: mixing a metal compound selected...
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5693736 |
Reactive emulsifiers based on unsaturated polyurethanes
Polyurethanes which have olefinic double bonds and a content by mass of ethylene oxide units, incorporated via polyethylene glycol, of from 20 to 80% and which are obtainable by reacting (a) at...
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5691440 |
Catalyst and process for producing isocyanate trimers
A process for preparing isocyanate adducts having a high proportion of monoisocyanurate using a quaternary ammonium carboxylate trimerization catalyst. Also claimed are specific carboxylate...
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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...
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5677412 |
Preparation of poly(ether-urethanes) from cyclic ethers and organic isocyanates
Poly(ether-urethanes) can be made from cyclic ethers and organic isocyanates by using selected metal compounds as catalysts. Polymers useful as thermoplastic elastomers, spandex fibers or urethane...
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5674951 |
Abrasion-resistant and low friction coating compositions
Coating compositions are disclosed which use a polyoxetane polymer having CH 2 --O---CH 2 --R f side chains where R f is a highly fluorinated alkyl or polyether. The coating compositions use...
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5656677 |
Method for preparing and applying a sprayable, light stable polyurethane
A method for preparing a light stable polyurethane, sprayable by means of a spray pistol, wherein use is made of an active hydrogen containing compound, wherein the functional groups consist for at...
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