Class / Patent application number | Description | Number of patent applications / Date published |
528365000 | With reactant containing at least one cyclic ether group | 10 |
20080287644 | HARDENER FOR EPOXY RESINS, METHOD FOR HARDENING AN EPOXY RESIN AND USE OF THE HARDENER - The present invention relates to a hardener for epoxy resins, which on the one hand contains a Michael adduct of a bifunctional amine and of an acrylic acid derivative and also an adduct from a epoxy and the bifunctional amine. The invention likewise relates to a method for hardening an epoxy resin by mixing of a not yet hardened epoxy resin with a Michael adduct of a bifunctional amine and of an acrylic acid derivative. Furthermore, purposes of use of the hardener according to the invention are provided. | 11-20-2008 |
20090198040 | INSULATING POLYMER MATERIAL COMPOSITION - An insulating polymer material composition is obtained by adding an acid anhydride as a curing agent and an organic peroxide such as dicumyl peroxide as a curing accelerator (for example, in an amount of 0.5 to 16.0 phr) to an epoxidized soybean oil, kneading the resulting under conditions according to the added amounts, and then heat-treating the kneaded substance, thereby causing peroxide vulcanization and three-dimensional crosslinking. This insulating polymer material composition is applied to polymer products such as high-voltage devices. | 08-06-2009 |
20110124839 | FLAME-RETARDANT POLYESTER COPOLYMER, AND PRODUCTION PROCESS AND MOLDED ARTICLE THEREOF - The invention provides a production process of a flame-retardant polyester copolymer, having a first step of adding a catalyst to a 2,5-furan dicarboxylic acid compound, an aliphatic or alicyclic diol, itaconic acid and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to obtain an oligomer, and a second step of adding a catalyst to the oligomer obtained in the first step to conduct polycondensation, thereby obtaining the flame-retardant polyester copolymer. | 05-26-2011 |
20120220750 | HYDROXYL-FUNCTIONAL POLYESTER RESINS - A hydroxyl-functional polyester resin composition including the reaction product of (a) a divinylarene dioxide, and (b) at least one dicarboxylic acid; a process for making the hydroxyl-functional polyester resin composition; and a curable hydroxyl-functional polyester resin composition made therefrom. The cured product made from the above curable hydroxyl-functional polyester resin composition is thermally stable and offers improved properties such as a lower viscosity and a high heat resistance compared to known cured products prepared from known epoxy resins. | 08-30-2012 |
20140316099 | HYDROXY ESTER RESINS - A hydroxy ester resin composition such as a vinyl ester resin including the reaction product of (a) divinylarene dioxide resin; and (b) at least one ring opening reactant such as at least one monocarboxylic acid for example (meth)acrylic acid, in the presence of (c) at least one non-gelling catalyst such as a Lewis acid catalyst; a process for making the hydroxy ester resin composition; a curable hydroxy ester resin composition such as a curable resin composition made from the hydroxy ester resin composition; a process for curing the curable hydroxy ester resin composition; and a cured product made from the curable hydroxy ester resin composition. The cured product made from the above hydroxy ester resin composition is thermally stable and offers improved properties such as a lower viscosity and a high heat resistance compared to known cured products prepared from known epoxy resins. | 10-23-2014 |
528366000 | Contains a single 1,2-epoxy group | 5 |
20080287645 | Method for preparing polymer polyol stabilizer using maleic anhydride, and polymer polyol stabilizer prepared thereby - Disclosed herein is a novel stabilizer for preparing a polymer polyol, which is used to prepare polyurethane foam having improved physical properties. The stabilizer is prepared by allowing maleic anhydride to react with a polyether polyol, having an OH functionality of 3-8 and a molecular weight of 3,000-15,000, and then adding ethylene oxide to the reaction solution. Because the molecular weight and functionality of the stabilizer are increased through aging and dimerization, the stabilizer has a high molecular weight of 5,000-30,000, a high OH functionality of 6-10 and a viscosity of 3,000-15,000 cps/25° C. A polymer polyol derived from the stabilizer has low viscosity compared to those of prior products and contributes to the improvement in the physical properties of the resulting polyurethane foam. | 11-20-2008 |
20120065360 | PREPARATION OF POLY(ALKYLENE CARBONATE) CONTAINING CROSS-LINKED HIGH MOLECULAR WEIGHT CHAINS - Provided is preparation of poly(alkylene carbonate) through alternating copolymerization of carbon dioxide and epoxide. According to the disclosure, by introducing a diepoxide compound to alternating copolymerization of carbon dioxide and epoxide compound using a metal(III) prepared with salen-type ligands containing quaternary ammonium salt as a catalyst, some of the polymer chains may be cross-linked to thus increase an average molecular weight of the copolymer and extend a distribution of molecular weight. A resin prepared according to this method may have high mechanical strength and rheological advantages. | 03-15-2012 |
20120157655 | POLYALKYLENE GLYCOL-BASED POLYMER AND PROCESS FOR PRODUCING THE SAME - The present invention has an object to provide a polyalkylene glycol-based polymer having high anti-soil redeposition ability in washing treatment and having high compatibility with surfactants. The polyalkylene glycol-based polymer includes: a structure unit (a) derived from a polyalkylene glycol-based monomer (A) of a specific structure, and a structure unit (b) derived from a carboxyl group-containing monomer (B) at specific ratios. | 06-21-2012 |
20130165623 | COPOLYMERIZATION OF PROPYLENE OXIDE AND CARBON DIOXIDE AND HOMOPOLYMERIZATION OF PROPYLENE OXIDE - Copolymers of propylene oxide and carbon dioxide and homopolymers of propylene oxide are made using two dimensional double metal cyanide complexes having the formula Co[M(CN) | 06-27-2013 |
20140329987 | METHOD FOR PRODUCING POLYETHERESTER CARBONATE POLYOLS - The present invention relates to a method for producing polyetherester carbonate polyols by means of catalytic addition of carbon dioxide, alkylene oxides and cyclic anhydrides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalysts. | 11-06-2014 |