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5650476 |
Process for production of polycarbodiimide resin powder
A process for producing a polycarbodiimide resin powder, which includes reacting an organic diisocyanate in the presence of a carbodiimidization catalyst in a solvent to produce a polycarbodiimide...
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5646229 |
Compositions for moisture curing hot melt adhesives
The present invention has for its object to obtain a composition for moisture curing hot melt adhesives superior in both moisture curing reactivity after adhesion and thermal stability in the use....
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5641851 |
Preparation of biuret-containing polyisocyanates
The invention is to a process for the preparation of biuret-containing polyisocyanates by catalytic reaction of aliphatic and/or cycloaliphatic diisocyanates with a biuretizing agent, where the...
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5639846 |
Ultraviolet radiation-curable coatings for optical fibers and optical fibers coated therewith
Ultraviolet radiation-curable primary and secondary coating compositions for optical fibers are disclosed. The primary coatings comprise a hydrocarbon polyol-based reactively terminated aliphatic...
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5633307 |
Ambient temperature curing aqueous coating composition based on polyurea resins
A two-component coating composition is disclosed wherein the binder components comprise: (a) an amino component comprising an aqueous solution and/or dispersion of at least one polyacrylate...
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5631318 |
Reactive hot-melt elastic sealant composition
A reactive hot-melt elastic sealant composition which comprises as the main components (A) a polyurethane prepolymer which is prepared by reacting a polyether polyol having a hydroxyl group at the...
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5625026 |
Amid group-containing diisocyanates and amide group-containing epoxy resins
An amide group-containing epoxy resin obtained by reacting an epoxy resin with an amide group-containing diisocyanate obtained by reacting a diisocyanate with a dicarboxylic acid gives a uniform...
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5623044 |
Polyurethane sealant compositions
Described herein is a polyurethane sealant composition comprising (1) a urethane prepolymer having an isocyanate functionality of at least about 2.0 and a molecular weight of at least about 2,000;...
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5621024 |
Preparation of thermoplastic polyurethanes
The present invention relates to a process for the preparation of thermoplastic polyurethane by reacting a) organic and/or modified organic polyisocyanates with b) at least one oligomeric...
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5614605 |
Rigid polyurethanes based on allophanate-modified aliphatic and/or cycloaliphatic polyisocyanurates
This invention relates to rigid polyurethanes prepared by reaction, at an isocyanate index of 95 to 110, of (a) an allophanate-modified aliphatic and/or cycloaliphatic polyisocyanurate; (b)...
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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),...
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5597885 |
Preparation of chlorofluorocarbon-free flexible polyurethane foams using diphenylmethane diisocyanate-based polyisocyanate mixtures containing urethane groups, and modified polyisocyanate mixtures
The invention relates to a process for the preparation of CFC-free, flexible polyurethane foams or molded foams by reacting A) liquid polyisocyanate mixtures containing bonded urethane groups...
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5594087 |
Polyurethane thickeners and their use for thickening aqueous systems
Water soluble or water dispersible polyurethane, which are suitable as thickeners for aqueous systems and prepared from a selected alcohol component a) based on a hydrophilic/hydrophobic mixture of...
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5589563 |
Surface-modifying endgroups for biomedical polymers
The present invention relates to novel polymeric compositions of matter and their use. Said polymeric compositions of matter are surface active endgroup-containing polymers that comprise a linear...
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5587421 |
Mixtures containing water-emulsifiable isocyanates
A mixture contains a) water-emulsifiable polyisocyanates and b) carbonic esters or lactones as organic solvents.
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5578675 |
Non-isocyanate basecoat/clearcoat coating compositions which may be ambient cured
Improved basecoat--clearcoat paint coating compositions which may be ambient cured are disclosed. The coating compositions comprise: 1) a hydroxyl functional coreactant, 2) at least one...
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5576412 |
Optical urethane resin
An optical urethane resin is obtained by reacting a polyiso(thio)cyanate compound having a hydrolyzable chlorine content of not greater than 300 ppm with an active hydrogen compound. There is...
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5574083 |
Aromatic polycarbodiimide crosslinkers
Disclosed are certain aromatic polycarbodiimides. Also disclosed is the use of an aromatic polycarbodiimide containing only aromatic carbodiimide groups as a cross-linker for a coating binder...
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5574092 |
Thermoplastic polyurethanes containing units derived from an aromatic diol
The present invention is a rigid thermoplastic polyurethane having a T g of at least 50° C. having a sufficient concentration of units derived from an aromatic diol to lower the temperature at...
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5569704 |
Curing agent and a cationic electrodeposition coating composition
The electrodeposition coating composition contains a base resin and a curing agent. The curing agent contains blocked isocyanate compound A and blocked isocyanate compound B. The difference in the...
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5567791 |
Process for the continuous production of thermoplastic polyurethane elastomers
A method whereby the properties, particularly the recrystallisation temperature, of thermoplastic polyurethane elastomers, particularly those suitable for processing by extrusion, are kept constant...
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5559195 |
Coating composition containing carbamate functional and acrylamide functional components
A coating composition including a first component comprising a compound having appended thereto more than one carbamate functional group, and further including a second component reactive with said...
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5554673 |
Dip molded polyurethane film compositions
Dip molding of thermoplastic polyurethane elastomers to form medical and surgical gloves, condoms, instrument and appliance covers, and other rubber goods is improved by a controlled viscosity,...
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5552507 |
Diisocyanates and processes for their production and use
Diisocyanates containing carboxylic acid ester groups corresponding to the formula: ##STR1## in which R and R 1 represent specified groups are produced by phosgenation of the corresponding...
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5545824 |
Curing composition for acrylic polyol coatings and coating produced therefrom
A curing composition, for use in curing of an acrylic polyol-containing coating composition, contains from about 20 to about 70 percent of an aliphatic polyisocyanate, from about 20 to about 70...
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5545705 |
Aldimines based on 2-methyl-1,5-pentane diamine and their use for the production of polyurea coatings
The present invention relates to aldimines corresponding to the formula X 1 --[NCHCH(R 1 )(R 2 )] 2 wherein X 1 represents the group obtained by the removal of the amino groups from...
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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...
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5530057 |
Filled aliphatic thermoplastic urethane automotive air bag door tear seam insert
A filled aliphatic thermoplastic urethane automotive air bag door tear seam insert is formed of a polyol, a chain extender, an organic diisocyanate, an antioxidant, a urethane catalyst, and a...
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5530061 |
Process for producing impact-resistant polyacetal resin composition
A process for producing an impact-resistant polyacetal resin composition, which comprises a first step of mixing with shear a polyacetal resin (A), a thermoplastic polyurethane (B) and a polyhydric...
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5527879 |
Polyfunctional polycarbonate polyol
Disclosed is a coating composition comprising: (1) a polycarbonate polyol having an average molecular weight of 400-10,000 and a hydroxyl value of 50-350, and (2) a melamine resin curing agent,...
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5527578 |
Radiation curable vinyl/silicone release coating
The invention relates to a radiation curable release coating composition comprising: (a) from about 0.05 to about 25 percent by weight of polymer selected from the group consisting of polymers...
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5523376 |
Coating compositions based on aldimines and polyisocyanates containing uretdione groups
The present invention is directed to coating compositions which have long pot lives and may be rapidly cured under ambient conditions to provide coatings with improved optical properties and...
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5521249 |
Polyurethanes from copolymers of allyl alcohol propoxylates and vinyl aromatic monomers
Copolymers of vinyl aromatic monomers and propoxylated allyl alcohols having an average of 2 or less oxypropylene groups are disclosed. The copolymers, which have hydroxyl numbers of 80-260 mg...
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5494922 |
Allophanic acid derivatives
The invention concerns allophanic acid derivatives of formula I R 1 --N(R 2 )CO--N(R 3 )CO--X 1 --Q--X 2 --GI and pharmaceutically acceptable metabolically labile esters or amides thereof, and...
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5493000 |
Fractal polymers and graft copolymers formed from same
This invention relates to a branched fractal three dimensional porous polymer species which comprises rigid aromatic recurring units having electrophilic or nucleophilic reactive moieties on the...
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5486576 |
Method for reducing microfoam in a spray-applied waterborne thermoset composition
A method for reducing the amount of microfoam in a spray-applied clear waterborne thermoset composition is provided, wherein the clear composition contains an emulsion-polymerized addition polymers...
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5484841 |
Method for production of aqueous dispersion of long-chain alkyl graft polymer and aqueous release agent
A method for the production of an aqueous dispersion of a long-chain alkyl graft polymer, which method comprises mixing an aqueous solution of a polyamine with a long-chain alkyl isocyanate and...
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5480749 |
Reversible chiral optical data storage using majority rule of polymer conformation
This invention provides a photoswitchable compound comprising interconvertible mirror image units or interconvertible chiral diastereomeric units connected as pendant groups to a stiff polymer...
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5473048 |
Thiol star polymer containing central hub with multiple radiating addition copolymer structures
The invention provides a co-polymer having a hub portion from which radiate from 3 to 8 arms where the hub portion is the residue of a tri-functional to octa-functional thiol and each arm is an...
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5470945 |
Thermally reversible isocyanate-based polymers
Thermally-reversible polymer compositions are obtained by reacting compounds with isocyanate and labile-hydrogen functionality. Aromatic polyimide, aromatic polycarbonate, polyarylsulfide, aromatic...
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5468831 |
One-package structural adhesive
A one-package primerless structural adhesive is disclosed that is particularly well suited for adhering one or more substrates of fiber-reinforced plastics. This adhesive uses dicyandiamide, its...
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5468833 |
Moisture curing, one-component coating compositions and their use for the production of coatings
Moisture-curing, one-component coating compositions wherein the binder contains a mixture of A) 100 parts by weight of a polyisocyanate or polyisocyanate mixture of the diphenylmethane series, B)...
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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...
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5463011 |
Acid derivatives
The invention concerns allophanic acid derivatives of formula I R 1 --N(R 2 )CO--N(R 3 )CO--X 1 --Q--X 2 --GI and pharmaceutically acceptable metabolically labile esters or amides thereof, and...
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5461135 |
Polyisocyanates containing uretidione and allophanate groups, a process for their production, and their use in one and two component coating compositions
Disclosed herein is a liquid, monoallophanate-containing, monouretidione-containing polyisocyanate composition characterized by having (i) an isocyanate functionality of between 2.8 and 6.5, (ii) a...
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5459220 |
Use of biuret and trimer isocyanates as crosslinkers in golf ball coatings
A golf ball having an improved urethane top coat is disclosed. The top coat is formed from a two-part polyurethane system where the first part contains a hydroxyl functional polyol and the second...
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5444117 |
Coating compositions containing polyisocyanates and aldimines which have improved storage stability
The present invention relates to a coating composition having an improved pot life without a corresponding increase in dry time when cured under ambient conditions which contains a) a...
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5443797 |
Process and apparatus for the production of a flowable reaction mixture from at least two flowable reactive components
A process and apparatus are described for the production of a flowable reaction mixture from at least two flowable reactive components which may be difficult to mix, which components react with one...
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5441993 |
Polyurethane foams
Process for preparing a flexible foam from a polyisocyanate, water as blowing agent and an isocyanate-reactive composition comprising a polyol with a low ethylene-oxide (EO) content, a polyol with...
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5441771 |
Anti-friction paint for elastomeric parts
Moisture-hardening one-component polyurethane paints for coating elastomeric parts, consisting of polyfunctional isocyanate compounds, solvents and, optionally, auxiliaries and/or coupling agents,...
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