Class / Patent application number | Description | Number of patent applications / Date published |
528080000 | With reactant compound containing at least two -C-C(=X)-X-C groups and which compound is devoid of C-NH, C=NH or C-N(H)-H groups | 24 |
20090292099 | Polyols from plant oils and methods of conversion - Methods of producing plant polyols from plant oils include reacting a plant oil with a designed reactant having one or more nucleophilic functional groups and one or more active hydrogen functional groups in the presence of an addition reaction catalyst in a single reaction step. The resultant polyols may be directly reacted with polyisocyanates to produce polyurethanes. | 11-26-2009 |
20100016538 | POLYLACTIDE-URETHANE COPOLYMERS - A polylactide-urethane copolymer obtainable by a process, which comprises the step of contacting:
| 01-21-2010 |
20100113734 | PROCESS FOR PRODUCING POLYLACTIDE-URETHANE COPOLYMERS - A process for producing polylactide-urethane copolymers, which comprises the step of contacting a polylactide having terminal hydroxyl groups, produced by contacting at least one lactide monomer with a diol or diamine, with a diisocyanate compound optionally in the presence of a second diol or diamine in the presence of a catalytic system under polymerisation conditions characterised in that the polylactide and the polylactide-urethane copolymers are produced by reactive extrusion. | 05-06-2010 |
20110034660 | POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, OPTICAL MATERIAL, AND METHOD FOR PRODUCING OPTICAL MATERIAL - A polymerizable composition for an optical material containing tolylene diisocyanate, an aliphatic polyisocyanate having 4 to 8 carbon atoms and one or more polythiols selected from pentaerythritol tetrakismercaptoacetate and pentaerythritol tetrakismercaptopropionate, is provided. | 02-10-2011 |
20110046338 | Copolyester polyols, prepolymers, and polyurethane elastomers formed therefrom and processes for making same - Polyurethane elastomers formed from prepolymers derived from copolyester polyols. The copolyester polyols have segments derived from one or more polyesters and caprolactone or polycaprolactone. The polyurethane elastomers have good hardness stability at temperatures ranging from 0° C. to 30° C. and preferably have good hydrolytic stability. | 02-24-2011 |
20120142884 | Bioresorbable Thermoset Polyester/Urethane Elastomers - Bioresorbable thermoset elastomers and methods of making the same are disclosed. In certain embodiments, the thermoset elastomers include soft segments comprising branched polyesters, and hard segments including urethane and/or urea. The thermoset elastomers are made in certain embodiments by curing a branched prepolymer with a cross-linking agent. In certain embodiments, the mechanical properties of the thermoset elastomers are tailored by selecting the average molecular weight of the prepolymer, or by tuning the ratio of prepolymer to the cross-linking agent during curing, or by selecting a cross-linking agent with specific chemical characteristics. | 06-07-2012 |
20140243496 | URETHANE-BASED OPTICAL COMPONENT AND MANUFACTURING PROCESS THEREFOR - The present invention relates to a urethane optical member containing at least one kind of structures represented by the following formulae (1) and (2) in a structure constituting the optical member, and a method for producing the same. | 08-28-2014 |
20150018508 | Isocyanate-Based Prepolymer - The invention relates to an isocyanate-containing prepolymer obtainable by reacting at least one isocyanate with at least one first compound selected from the group comprising monohydric alcohols, thiols and secondary amines; wherein the ratio of the NCO value of the isocyanate-containing prepolymer, to the OH, SH or NH value, of said monohydric alcohol, thiol or secondary amine respectively ranges from 0.0005 to 1.0000 and wherein said at least one first compound is present in a total amount of at least 40% by weight based on the total weight of the isocyanate-containing prepolymer. | 01-15-2015 |
20150018509 | Isocyanate-Based Prepolymer - The invention relates to an isocyanate-containing prepolymer obtainable by reacting at least one isocyanate which comprises methylene diphenyl diisocyanate with at least one first compound selected from the group comprising monohydric alcohols, thiols and secondary amines and with at least one second compound selected from the group comprising monohydric alcohols, thiols and secondary amines. | 01-15-2015 |
20150031848 | POLYESTER POLYOL FOR USE IN POLYURETHANE - The present invention relates to a polyester polyol, suitable for use in the manufacture of a polyurethane, suitable for use in the manufacture of a polyurethane, the polyester polyol having an ABA-structure, in which A represents a lactide-oligomer and in which B represents an initiator. The initiator includes a reaction product having long chain dicarboxylic acid components having 18 or more carbon atoms. The invention also relates to a method for the manufacture of the polyester polyol. The invention further pertains to polyurethanes including the before-mentioned polyester polyol as well as the use of these polyurethanes as an elastomer having a high toughness. The toughness is believed to originate from the combination of the hydrophobic character of the initiator and the hydrophilic character of the lactide parts in the polyol structure. The strength of the invented polylactide-polyurethane elastomers can be further improved by incorporating a carbodiimide in the elastomer material. | 01-29-2015 |
20150141609 | POLYESTER - POLYURETHANE ELASTOMERS FROM RENEWABLE SOURCES - Embodiments of the invention encompass polyurethane elastomers which are a reaction product of a reaction mixture that includes a) at least one polyester made using a dicarboxylic acid having a carbon chain of from 9 to 20; b) at least one chain extender; and c) at least one polyisocyanate. At least 20% of the total carbon content of the polyurethane elastomer is from renewable carbon. | 05-21-2015 |
20160053044 | POLYTHIOURETHANE-BASED CASTING RESIN HAVING HIGH FRACTURE RESISTANCE AND LOW SPECIFIC WEIGHT - The invention has as subject matter a method for producing a polyurethane cast resin, wherein the production comprises the steps of mixing at least one thiol component with at least one isocyanate component, degassing of the mixture and hardening of the polyurethane polymer in a one-stage process. Cast resins for electronic or optoelectronic components of for the production of optical lenses are obtained by the method of the invention that have good mechanical properties and very good optical properties at the same time by a suitable combination of polythiols as hardening component with commercially available isocyanates. The addition of special isocyanates is also not very necessary, as is the case for carrying out the method in several stages. The method in accordance with the invention results in an economical, one-stage process in the properties of the cast resin that are necessary for the application range. | 02-25-2016 |
20160108166 | HYBRID POLYOLS - Provided is a two-component composition comprising one or more polyisocyanate and one or more hybrid polyol comprising reaction residues of
| 04-21-2016 |
20160145375 | FAST RECOVERY HARD THERMOPLASTIC POLYURETHANES - The thermoplastic polyurethane compositions described herein have very good recovery properties, rebound resilience, or both, while also having good hardness. It has been difficult to provide thermoplastic polyurethane compositions with this combination of properties. Some compositions described herein also provide low haze and/or good clarity properties. These combination of properties make the thermoplastic polyurethane compositions described herein useful materials for application that require fast recovery, good rebound resilience, or both while also requiring hard materials, and in some embodiments low haze and/or good clarity. | 05-26-2016 |
20160168310 | POLYURETHANE | 06-16-2016 |
528081000 | Reactant compound which contains at least two -C-C(=X)-X-C groups contains three or more XH groups | 2 |
20100292431 | PROCESS FOR PRODUCING PENTAERYTHRITOL MERCAPTOCARBOXYLIC ESTERS AND POLYMERIZABLE COMPOSITIONS CONTAINING THE ESTERS - A process for producing pentaerythritol mercaptocarboxylic ester by reacting pentaerythritol with a mercaptocarboxylic acid having a content of thioester formed by condensation of two molecules of the acid of 5% or below (in terms of area percentage) as determined by the high-performance liquid chromatography in the case of the total area of the mercaptocarboxylic acid and thioester formed by intermolecular condensation of the acid is taken as 100%. | 11-18-2010 |
20120149862 | PROCESS FOR PREPARING POLYESTER ALCOHOLS - The invention relates to a process for preparing polyester alcohols by catalytic reaction of at least one at least polyfunctional carboxylic acid with at least one polyfunctional alcohol and/or by catalytic ring-opening polymerization of cyclic esters in the presence of catalysts, wherein a zeolite is used as catalyst. | 06-14-2012 |
528083000 | Reactant which contains at least two -C-C(=X)-X-C groups has been derived from only a dicarboxylic acid or derivative and only a dihydric alcohol or alcoholate derivative | 7 |
20110112270 | Low Melting Polyurethane Elastomers - The present invention relates generally to polyurethane elastomer compositions; and more preferably to thermo-plastic polyurethane elastomer compositions. In one embodiment, the polyurethane elastomer compositions of the present invention have low melting points while still behaving in an elastomeric manner. In one embodiment, the polyurethane elastomer compositions of the present invention are prepared from the reaction of a polyol component, a polyisocyanate component, and a diol chain extender. In another embodiment, the polyurethane elastomer compositions of the present invention are prepared from the reaction of a polyester polyol component, a methylene diphenyl diisocyanate (MDI) component, and a linear diol chain extender having either 5 carbons or 7 or more carbons between the OH groups of the diol. | 05-12-2011 |
20110306747 | POLYESTER FILM AND METHOD FOR PRODUCING SAME, BACKSHEET FOR SOLAR CELL, AND SOLAR CELL MODULE - A polyester film containing a polyester resin having an intrinsic viscosity IV of from 0.73 to 0.9 dL/g in which the polyester film has a specific heat change at 85° C. to 135° C. (ΔCp) of from 0.06 to 0.1 J/g, has an excellent weather resistance, a good planar surface state and a low thermal shrinkage. | 12-15-2011 |
20120142885 | MOISTURE-CURABLE HOT MELT ADHESIVE FOR IC CARD - Provided is a moisture-curing hot melt adhesive, which has superior overall performance, including heat resistance, adhesiveness, and solidification performance, and with which there is no reduction in the resulting IC card quality or productivity. Also provided is an IC card obtained by applying such a moisture-curing hot melt adhesive. The moisture-curing hot melt adhesive for an IC card comprises a urethane prepolymer (A) having a chemical structure (A1) derived from a polyester polyol (a1) that has isocyanate groups at the terminals and that is obtained by reacting of a diol and a dicarboxylic acid having 10 carbons or fewer. The moisture-curing hot melt adhesive has a shear modulus with non-moisture curing that is between (1×10 | 06-07-2012 |
20140051823 | METHOD FOR PRODUCING ALIPHATIC POLYESTER HAVING INCREASED MOLECULAR WEIGHT - The problem to be solved by the present invention is to provide a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight which prevents evaporation of diisocyanate at the step of mixing the diisocyanate with the aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point of the prepolymer and enables uniform mixing of the diisocyanate with the aliphatic polyester prepolymer. In order to solve this problem, the present invention provides a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of:
| 02-20-2014 |
20140256902 | HOMOGENEOUS EXTRUDED ARTICLES MADE FROM THERMOPLASTICALLY PROCESSABLE POLYURETHANES BASED ON POLYESTER DIOLS FORMED FROM SUCCINIC ACID AND 1,3-PROPANEDIOL - The present invention relates to homogeneous extruded articles made from thermoplastically processable polyurethanes based on polyester diols formed from succinic acid and 1,3-propanediol. | 09-11-2014 |
20150322196 | A POLYESTER POLYURETHANE MATERIAL WITH LONG TERM HYDROLYSIS RESISTANCE - The present invention relates to a polyester polyurethane material with long term hydrolysis resistance which is prepared from perchlorates and a polyester polyol comprising structure unit I, II, and III. The polyester polyurethane material having a mole ratio of structure unit II to III of 1:1.5 to 1.5:1 has better long term hydrolysis resistance. In another aspect of the present invention, there is provided soles, carpets, rollers, sealing strips, coating, tires, wipers, steering wheels or gaskets prepared from the polyester polyurethane material, and a use of the polyester polyurethane material. | 11-12-2015 |
20160102168 | BIO-BASED DIISOCYANATE AND CHAIN EXTENDERS IN CRYSTALLINE SEGMENTED THERMOPLASTIC POLYESTER URETHANES - The synthesis of semi-crystalline thermoplastic polyester urethanes is disclosed. The synthesis describes parameters such as controlled concentration, distribution, and types of crystalline hard segment blocks to correlate the effect of hard segment crystallinity to that of the soft segment blocks. | 04-14-2016 |