Patent application number | Description | Published |
20100086861 | SPECIAL POLYETHER-BASED POLYURETHANE FORMULATIONS FOR THE PRODUCTION OF HOLOGRAPHIC MEDIA - The present invention relates to novel polyurethane compositions which are advantageous for the production of holographic media, inter alia for data storage, but also for optical applications of different types. | 04-08-2010 |
20100125126 | PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS - The present invention provides a process for conditioning double metal cyanide (DMC) catalysts, which are employed in the preparation of polyether polyols based on starter compounds having active hydrogen atoms, the preparation of polyether polyols using the conditioned catalysts and the use of the polyether polyols prepared in this way for the preparation of polyurethane materials. | 05-20-2010 |
20110230581 | PROCESS FOR THE PRODUCTION OF POLYETHER POLYOLS WITH A HIGH ETHYLENE OXIDE CONTENT - Polyether polyols with an OH number of from 15 to 120 mg of KOH/g are produced by (i) introducing a mixture of DMC catalyst and a poly(oxyalkylene)polyol or a mixture of DMC catalyst and a polyether polyol (“heel”) obtainable by the process according to the invention is initially into a reactor and (ii) continuously introducing one (or more) low molecular weight starter compound(s) with a (mixed) hydroxyl functionality of from 2.2 to 6.0 and a mixture composed of a) 73 to 80 parts by weight (per 100 parts by weight of a) plus b)) of ethylene oxide and b) 27 to 20 parts by weight (per 100 parts by weight of a) plus b)) of at least one substituted alkylene oxide corresponding to a specified formula into the mixture from step (i). These polyether polyols are particularly useful for the production of flexible polyurethane foams. | 09-22-2011 |
20120029162 | CARBON NANOTUBES COMPRISING HYDROXY GROUPS, METHOD FOR THE PRODUCTION THEREOF AND POLYURETHANE POLYMERS COMPRISING SAID CARBON NANOTUBES - The invention relates to carbon nanotubes comprising hydroxy groups, wherein the surface thereof comprises hydroxy alkyl ester groups covalently bound thereon, chosen from the group according to the general formula (1) and/or the general formula (2), wherein (CNT) stands for the surface of the carbon nanotube and R1 and R2 are independently from each other hydrocarbon, an alkyl radical or an aryl radical. The invention further relates to a method for the production thereof by means of reaction of carbon acid groups of the carbon nanotubes with an epoxy, furthermore a polyurethane polymer, wherein said carbon nanotubes are covalently bound, a method for producing a polymer of said kind and use of the carbon nanotubes for producing polymers. | 02-02-2012 |
20120116114 | PROCESS FOR PRODUCING POLYESTER POLYOLS HAVING SECONDARY OH END GROUPS - The invention relates to a process for producing polyester polyols with secondary hydroxyl end groups, including the step of the reaction of a polyester including carboxyl end groups with an epoxide of the general formula (1): | 05-10-2012 |
20120123008 | PROCESS FOR THE PREPARATION OF A POLYURETHANE POLYMER WITH SECONDARY HYDROXYL END GROUPS COMPRISING POLYESTER POLYOLS - The invention relates to a process for the preparation of a polyurethane polymer, comprising the step of reaction of | 05-17-2012 |
20120172519 | HYDROPHILIC POLYURETHANE UREA DISPERSIONS - The invention relates to a polyurethane urea dispersion, wherein the polyurethane urea (1) is terminated with a copolymer unit of polyethylene oxide and poly-C4-C12-alkylene oxide, and (2) comprises at least one polycarbonate polyol containing hydroxyl groups. | 07-05-2012 |
20120175563 | REACTIVE DILUENTS CONTAINING SILANE GROUPS - The present invention relates to reactive diluents for moisture-curing coating systems containing silane groups. The invention further relates to a method for the production of said diluents, and to the use thereof in coating agents, adhesives and sealants. | 07-12-2012 |
20120177711 | HYDROPHILIC POLYURETHANE UREA SOLUTIONS - The invention relates to a coating composition containing at least one polyurethane urea which is terminated with a copolymer unit of polyethylene oxide and poly-C | 07-12-2012 |
20120196999 | METHOD FOR THE PRODUCTION OF POLYETHER POLYOLS COMPRISING TERMINAL PRIMARY HYDROXYL GROUPS - The present invention relates to a process for producing polyether polyols having primary hydroxyl end groups, comprising the steps of reacting a starter compound containing active hydrogen atoms with an epoxide under double metal cyanide catalysis, reacting the resulting product with a cyclic carboxylic anhydride and reacting this resulting product with ethylene oxide in the presence of a catalyst containing at least one nitrogen atom per molecule, excluding non-cyclic, identically substituted tertiary amines. The invention further relates to polyether polyols obtainable by this process, compositions containing said polyols and polyurethane polymers based on said polyols. | 08-02-2012 |
20120231377 | PHOTOPOLYMER FORMULATION HAVING DIFFERENT WRITING COMONOMERS - The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers, and photo initiators, comprising a combination of at least two different writing monomers. The invention further relates to the use of the photopolymer formulation for producing optical elements, in particular for producing holographic elements and images, to a method for producing the photopolymer formulation and to a method for illuminating holographic media made of the photopolymer formulation. | 09-13-2012 |
20120244107 | BIODEGRADABLE HYDROGEL - The present invention relates to a hydrogel on the basis of polyurethane or polyurethane urea, said hydrogel comprising hydrolysable functional groups in the polymer chain, to a method for producing the hydrogel and to the use of the hydrogel as adhesion barriers. | 09-27-2012 |
20120289732 | PROCESS FOR THE ACTIVATION OF DOUBLE METAL CYANIDE CATALYSTS FOR THE PREPARATION OF POLYETHER CARBONATE POLYOLS - The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts for the preparation of polyether carbonate polyols by catalytic copolymerisation of carbon dioxide (CO | 11-15-2012 |
20120292563 | PROCESS FOR PRODUCING CARBON NANOTUBES CONTAINING HYDROXYALKYL ESTER GROUPS AND MATERIALS AND DISPERSIONS CONTAINING SAID CARBON NANOTUBES - The invention relates to a process for the preparation of carbon nanotubes having hydroxyalkyl ester groups by reacting carbon nanotubes which have carboxylic acid groups with one or more epoxides, and to dispersions and materials which contain the carbon nanotubes functionalized thus. | 11-22-2012 |
20130072602 | PROCESS FOR THE PREPARATION OF POLYETHER CARBONATE POLYOLS - The present invention relates to a process for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO | 03-21-2013 |
20130123532 | METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS - The present invention relates to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of at least one double metal cyanide catalyst, wherein the cyanide-free metal salt, the metal cyanide salt or both the mentioned salts used for the preparation of the double metal cyanide catalyst contain(s) from 0.3 to 1.8 mol base equivalents (based on 1 mol of the metal cyanide salt used for the synthesis of the catalyst) of alkaline metal hydroxide, metal carbonate and/or metal oxide. | 05-16-2013 |
20130184432 | PROCESS FOR THE PREPARATION OF POLYETHER CARBONATE POLYOLS - The present invention relates to a process for the preparation of polyether carbonate polyols from one or more alkylene oxides, carbon dioxide and optionally from one or more H-functional starter substances in the presence of at least one double metal cyanide catalyst, wherein the double metal cyanide catalyst comprises an unsaturated alcohol as a complexing ligand. | 07-18-2013 |
20130190462 | PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS WITH DOUBLE METAL CYANIDE CATALYSTS AND IN THE PRESENCE OF METAL SALTS - The present invention relates to a process for the preparation of polyether carbonate polyols by catalytic copolymerisation of carbon dioxide (CO | 07-25-2013 |
20130261205 | PROCESS FOR THE PREPARATION OF POLYRICINOLEIC ACID ESTER POLYOLS HAVING PRIMARY HYDROXYL END GROUPS - The present invention relates to a process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups. It furthermore relates to polyricinoleic acid ester polyols obtainable according to the invention and polyurethane polymers prepared using these polyols. The process comprises the steps: a) polycondensation of ricinoleic acid until a hydroxyl number of >0 mg of KOH/g to <60 mg of KOH/g is reached; and b) reaction of the product obtained in step a) or of a secondary product of the product obtained in step a) comprising carboxyl groups with an epoxide of the general formula (I), wherein R1 represents hydrogen, an alkyl radical or an aryl radical, with the proviso that >80% by weight to <100% by weight, based on the total amount of the epoxide (I) employed, is ethylene oxide and the reaction is carried out in the presence of an amine as the catalyst. | 10-03-2013 |
20130296450 | METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS HAVING PRIMARY HYDROXYL END GROUPS AND POLYURETHANE POLYMERS PRODUCED THEREFROM - The present invention relates to a process for the preparation of polyether carbonate polyols with primary hydroxyl end groups, comprising the steps of reaction of a starter compound containing active hydrogen atoms with an epoxide and carbon dioxide under double metal cyanide catalysis, reaction of the product obtained with a cyclic carboxylic acid anhydride and reaction of this product obtained with ethylene oxide in the presence of a catalyst which contains at least one nitrogen atom per molecule, excluding non-cyclic tertiary amines with identical substituents. The invention furthermore relates to polyether carbonate polyols obtainable by this process, compositions comprising these polyether carbonate polyols and polyurethane polymers based on these polyether carbonate polyols. | 11-07-2013 |