Class / Patent application number | Description | Number of patent applications / Date published |
564511000 | Plural amino nitrogens containing | 10 |
20090137847 | Decomposing system for polyisocyanate residues, and start-up method for the same - An object of the invention is to provide a decomposing system for polyisocyanate residues that is capable of suppressing reaction of polyisocyanate residues with high temperature and high pressure water to allow smooth start-up of the operation, and a start-up method for the decomposing system for the polyisocyanate residues. The decomposing system is used for hydrolyzing the polyisocyanate residues to polyamine using high temperature and high pressure water, comprising a hydrolyzer, a water feed pipe connected to the hydrolyzer, a residual feed pipe connected to the water feed pipe, a solvent feed line for filling an organic solvent in a solvent filling portion of the residual feed pipe, and a solvent draining line. Upon start-up of the operation, the organic solvent is previously filled in the solvent filling portion via the solvent feed line and the solvent draining line, first, and then, the high temperature and high pressure water is fed from the water feed pipe to the hydrolyzer. Then, the organic solvent is fed from the residual feed pipe to the water feed pipe, first, and then, the polyisocyanate residues are fed thereto. | 05-28-2009 |
20100267989 | CONTINUOUS PREPARATION OF AMINES BY NITRILE COMPOUND HYDROGENATION - Amino compounds are continuously prepared by hydrogenation of nitrile compounds in the presence of a catalyst, and more particularly diamines are prepared by the continuous hydrogenation of dinitrile compounds in the presence of a Raney metal catalyst and in the absence of an alcoholic solvent; the subject process includes extracting a portion of the catalyst present in the reaction medium, the extracted portion of the catalyst is submitted to a regeneration for providing a catalyst having a catalytic activity lower than that of a fresh catalyst but still high and the regenerated catalyst is recycled to the reaction medium together with fresh catalyst according to a predetermined ratio, whereby the consumption of catalyst is reduced per ton of amines produced. | 10-21-2010 |
20120259140 | CURING ACTIVATORS - Use of compounds of molecular formula (I) as curing activators of mixes having a cross-linkable unsaturated-chain polymer base: ([R | 10-11-2012 |
20130184495 | PROCESS FOR PRODUCTION OF HEXAMETHYLENEDIAMINE FROM CARBOHYDRATE-CONTAINING MATERIALS AND INTERMEDIATES THEREFOR - Processes are disclosed for the conversion of a carbohydrate source to hexamethylenediamine (HMDA) and to intermediates useful for the production of hexamethylenediamine and other industrial chemicals. HMDA is produced by direct reduction of a furfural substrate to 1,6-hexanediol in the presence of hydrogen and a heterogeneous reduction catalyst comprising Pt or by indirect reduction of a furfural substrate to 1,6-hexanediol wherein 1,2,6-hexanetriol is produced by reduction of the furfural substrate in the presence of hydrogen and a catalyst comprising Pt and 1,2,6-hexanediol is then converted by hydrogenation in the presence of a catalyst comprising Pt to 1,6 hexanediol, each process then proceeding to the production of HMDA by known routes, such as amination of the 1,6 hexanediol. Catalysts useful for the direct and indirect production of 1,6-hexanediol are also disclosed. | 07-18-2013 |
20130289311 | PRODUCTION OF ALPHA, OMEGA-DIOLS - Disclosed herein are processes for preparing an α,ω-C | 10-31-2013 |
20130289312 | PRODUCTION OF ALPHA, OMEGA-DIOLS - Disclosed herein are processes for preparing an α,ω-C | 10-31-2013 |
20140200371 | PROCESS FOR THE PREPARATION OF ALKYLDIAMINES - Provided is a process for preparing alkyl diamine compounds in high purity. The process utilizes an alkyl amine compound during the reduction of a nitroamine, resulting in reduction of the concentration of undesired byproducts. | 07-17-2014 |
564512000 | Three or more amino nitrogens containing | 3 |
20120289748 | METHOD OF PRODUCING POLYALKYLATED OLIGOALKYLENEPOLYAMINES - A method of preparing polyalkylated oligoalkylenepolyamines is provided. The method includes contacting oligoalkylenepolyamine with a reagent composition comprising (a) alkyl bromide and/or alkyl chloride; (b) a basic agent; and (c) iodide salt. The alkylation reaction may be carried out in a polar, aprotic organic solvent. | 11-15-2012 |
20130123542 | POLYAMINE AND METHOD FOR PRODUCING THEREOF - A method for producing a polyamine is described that provides excellent safety, a lot of flexibility regarding a variety of its productions, and that can produce a polyamine of high-molecular weight easily and inexpensively. | 05-16-2013 |
20140243557 | POLYAMINES AND PROCESS FOR PREPARATION THEREOF - The present invention relates to polyamines and to a process for preparing polyamines. | 08-28-2014 |