| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528067000 | From two or more reactants containing -N=C=X groups | 22 |
| 20080269454 | Linear thermoplastic polyurethanes and method of fabricating the same - A linear thermoplastic polyurethane is provided. The linear thermoplastic polyurethane is prepared by starting materials of a difunctional hydrophilic polyether-polyol, 4,4-methylene bisphenyl diisocyanate (MDI) and a difunctional aliphatic polyester-polyol, wherein the starting materials of the linear thermoplastic polyurethane have an NCO:OH ratio of about 0.9:1-1.2:1. The invention also provides a method of fabricating the linear thermoplastic polyurethane. | 10-30-2008 |
| 20090048421 | FILM FORMING COMPOSITION, FILM, AND ELECTRONIC DEVICE - A film forming composition is provided that includes a compound represented by Formula (1) below and/or a polymer polymerized using at least a compound represented by Formula (1) below | 02-19-2009 |
| 20090069527 | AIR DRYING POLYMER - Disclosed is a novel air drying polymer, such as an alkyd, built up from alternating air drying units and spacer units and having a general structure of R | 03-12-2009 |
| 20090171059 | Impact-Resistant Polyurethane - The present invention teaches a new process to produce novel, hard, optically clear, impact-resistant polyurethane polymers that are characterized by excellent thermo mechanical properties and chemical resistance, and the polymers made as a result of such a process. | 07-02-2009 |
| 20090192284 | Stabilisers based on polyisocyanates - Stabilizers composed of
| 07-30-2009 |
| 20090286950 | Hotmelt process for producing a chemically crosslinked polyurethane film - Process for producing a chemically crosslinked polyurethane film, comprising the following substeps:
| 11-19-2009 |
| 20100130717 | BIODEGRADABLE MACROMERS - Methods for producing biocompatible compositions are provided. The biocompatible compositions include an aliphatic polyester macromer produced without the use of solvents or catalysts. The resulting aliphatic polyester macromer may be reacted with a polyisocyanate to form an end-capped aliphatic polyester macromer which, in turn, may be reacted with a polyol to produce a polyurethane. The polyurethane, in turn, may be reacted with a second polyisocyanate to produce an isocyanate-functional polyurethane. The compositions prepared by the methods of the present disclosure may be used as adhesives or sealants for medical/surgical uses. | 05-27-2010 |
| 20100234553 | Molded Polyurethane Part, Method for its Production and its Use - The present invention relates to lightfast and hydrolytically resistant molded polyurethane parts with excellent strength properties and a high temperature resistance and colorfastness to light at elevated temperatures for sophisticated applications in the sector of automobile interiors, which products are produced from a reaction mixture of aliphatic and/or cycloaliphatic compositions by using a cost-effective reaction injection molding method (RIM) or a casting method that requires only a short mold residence time. To this end, A) a composition composed of A1) an OH-terminated trifunctional prepolymer, A2) a polyol or a polyol combination, A3) at last one di- and/or trifunctional chain-lengthening agent and/or crosslinking agent with amine and/or hydroxyl groups, and A4) a catalyst system, and optionally A5) a stabilizer system, and optionally A6) at least one additive, and B) an isocyanate composition, are reacted. | 09-16-2010 |
| 20110054141 | ALIPHATIC MOISTURE-CURABLE RESINS, COATING COMPOSITIONS, AND RELATED PROCESSES - The present disclosure is directed to an aliphatic isocyanate-based moisture-curable resin. The disclosed resin may include an aliphatic isocyanate functional material and an cycloaliphatic isocyanate functional material. The resin may be used to formulate a coating composition that may exhibit no substantial sag when applied at a wet film thickness of at least 6 mils, and no substantial blistering when cured to a dry film thickness of at least 6 mils. | 03-03-2011 |
| 20120123079 | POLYIMIDE MEMBRANES MADE OF POLYMERIZATION SOLUTIONS - The invention relates to polyimide membranes and to a phase inversion method for the production thereof. The polyimide membranes can be used to separate different gas mixtures. | 05-17-2012 |
| 20120277395 | POLYTHIOURETHANE POLYMERIZABLE COMPOSITION AND METHOD FOR PRODUCING OPTICAL RESIN BY USING SAME - A resin composition excellent in tintability and resin strength, a resin obtained by curing such a resin composition, and an optical component is provided. A polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly) sulfide bonds in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups is used. | 11-01-2012 |
| 20130023640 | CYANATE ESTER COMPOUNDS AND CURED PRODUCTS THEREOF - There is provided a novel cyanate ester compound that can provide a cured product possessing excellent heat resistance. The cyanate ester compound is represented by general formula (1): | 01-24-2013 |
| 20130060000 | METHODS FOR PRODUCING CROSSLINKABLE SILYL GROUP-CONTAINING POLYOXYALKYLENE POLYMERS - Embodiments of the invention provide for a method of producing a silylated polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule. The method comprises providing a polyoxyalkylene polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, wherein the polyoxyalkylene polymer includes an impurity double metal cyanide complex mixed therein, and wherein the polyoxyalkylene polymer has not been treated with a metal-coordinating compound; and adding to the polyoxyalkylene polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction, wherein the hydrosilyation reaction is performed in an absence of a metal-coordinating compound. | 03-07-2013 |
| 20140039145 | METHOD OF PRODUCING RESIN FOR THIOURETHANE-BASED OPTICAL MATERIAL USING GENERAL-PURPOSE POLYISOCYANATE COMPOUND, RESIN COMPOSITION FOR THIOURETHANE-BASED OPTICAL MATERIAL AND THIOURETHANE-BASED OPTICAL MATERIAL INCLUDING RESIN PRODUCED BY THE METHOD - Disclosed is a method of producing a high-quality thiourethane-based optical material using a general-purpose polyisocyanate compound. According to the method, the pH of a polythiol compound is adjusted to 3.1 to 7 to prevent the occurrence of whitening, which is a problem of the prior art arising from the dissolution of a pressure-sensitive adhesive from a pressure-sensitive adhesive tape upon lens casting. The pH adjustment increases the reaction rate of a resin composition including the polythiol compound. The use of the polythiol compound whose pH is adjusted enables the production of a thiourethane-based optical material that does not suffer from whitening at the edges of the optical lens and nonuniformity polymerization. Further disclosed are a resin composition for a thiourethane-based optical material, and an optical material including a resin produced by the method. | 02-06-2014 |
| 20140135468 | PROCESSES FOR THE PREPARATION OF RHEOLOGY MODIFIERS - Methods for preparing hydrophobically modified alkylene oxide urethane branched polymers. In an embodiment, the order of addition of reactants affects the properties of the resultant product urethane. In an embodiment, the time at which one or more reactants are added affects the properties of the resultant product urethane. | 05-15-2014 |
| 20140171612 | POLYURETHANE UREA-CONTAINING COMPOSITIONS AND OPTICAL ARTICLES AND METHODS FOR PREPARING THEM - A composition for the preparation of a transparent, non-elastomeric optical article is provided, the composition including:
| 06-19-2014 |
| 20140200323 | PLASTIC LENS - A plastic lens having excellent weather resistance, formed by polymerization of a composition containing a polyisocyanate compound having an aromatic ring and a polythiol compound is provided. The plastic lens is formed by polymerization of a composition that contains 100 parts by mass in total of (A) a polyisocyanate compound containing a polyisocyanate compound having an aromatic ring and (B) a polythiol compound, from 0.5 to 5.0 parts by mass of (C) a benzophenone compound having a hydroxyl group on at least the ortho position, and from 0.5 to 5.0 parts by mass of (D) a phenol compound. | 07-17-2014 |
| 20140249289 | METHOD FOR PRODUCING LIGHT-COLOURED POLYISOCYANATES - The invention relates to a method for producing light-coloured polyisocyanates by phosgenation of mixtures comprising MDA and polycyclic aromatic polyamines that have o-phenylenediamine units incorporated via methylene bridges. The invention further relates to the polyisocyanate mixtures obtainable by this method. | 09-04-2014 |
| 20140364578 | POLISHING PAD COMPOUND - A polishing pad compound and a polishing pad, the polishing pad compound including a pre-polymer; and a hardener, wherein the pre-polymer includes about 45 wt % to about 50 wt % of a polyol, about 5 wt % to about 25 wt % of a hardness regulator, and a balance of an isocyanate. | 12-11-2014 |
| 20150073115 | OXAZOLIDONE RING CONTAINING ADDUCTS - Embodiments include oxazolidone ring containing adducts obtainable by combining an aliphatic epoxy compound, an aromatic epoxy compound, and a diisocyanate. Embodiments further include a curable powder coating composition including a resin component and a hardener component, where the resin component includes the oxazolidone ring containing adduct. | 03-12-2015 |
| 20150148512 | NOVEL METHOD FOR PREPARING POLYTHIOL COMPOUND AND POLYMERIC COMPOSITION FOR OPTICAL MATERIAL COMPRISING SAME - The present invention relates to novel methods for preparing a polythiol compound for use in an optical material and polymerizable compositions including a polythiol compound prepared by the methods. According to the methods, a polythiol compound with uniform color, high purity and high quality can be prepared at reduced cost. The polymerizable compositions can be used to manufacture clear, transparent optical lenses with good heat resistance and excellent optical properties. | 05-28-2015 |
| 20160009851 | REDUCED DISCOLORATION OF THERMOPLASTIC POLYURETHANES BASED ON POLYMER POLYOLS VIA INCORPORATION OF ALIPHATIC ISOCYANATES | 01-14-2016 |
