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| Number | Title | Issue Date |
| 8049039 | Process for preparation of alkoxylated alkylamines/alkyl ether amines with peaked distribution The present invention generally relates to a process for preparing alkoxylated alkylamines and/or alkyl ether amines. The process consists of two stages and utilizes a catalyst with a multiple-charge counterion. The alkoxylated alkylamines and alkoxylated alkyl ethe... | 11/01/2011 |
| 7550631 | Modified alkoxylated polyol compounds Uses of a modified polyol compound having alkoxylation and having at least one anionic capping unit. ... | 06/23/2009 |
| 7439219 | Modified alkoxylated polyol compounds A modified polyol having alkoxylation and amine capping units, uses of the modified polyol having alkoxylation and amine capping units, and leaning compositions having the modified polyol having alkoxylation and amine capping units. ... | 10/21/2008 |
| 7323600 | Process for improving the conversion of oxazolidones to alkanolamines There is provided a regeneration process for converting oxazolidones such as hydroxypropyloxazolidone (HPOZD) to alkanolamines such as di-isopropanolamine (DIPA) and CO2. An amine stream containing HPOZD joins a stream that includes a caustic solution. Th... | 01/29/2008 |
| 7279602 | Method for separating triethanolamin from a mixture obtainable by ammonia and ethylene oxide reaction Process for separating triethanolamine continuously by distillation from a mixture of monoethanolamine, diethanolamine and triethanolamine together with ethanolamine ethers and water obtained by reaction of ammonia with ethylene oxide in the liquid phase under super... | 10/09/2007 |
| 7196033 | Advances in amination catalysis Provided herein are catalysts useful in reductive amination, which include nickel, copper, zirconium and/or chromium, oxygen, and tin. The presence of the tin increases the selectivity of the catalyst in reductive aminations over the catalysts of the prior art. ... | 03/27/2007 |
| 7189879 | Process for the production of 1-hydroxymethyl-1,3,5-triazapentane, trihydrochloride A new process for the production of 1-hydroxymethyl-1,3,5-triazapentane, trihydrochloride is described. ... | 03/13/2007 |
| 7169268 | Color stabilization of amines The present invention concerns a process for providing tertiary amine products which are color-stable, and have a greatly reduced tendency to take on color during their storage. According to the invention, an ethyleneamine derivative is added to the distillation pot... | 01/30/2007 |
| 7164044 | Process for producing high purity trialkanolamine A process for producing a high purity trialkanolamine excelling in hue and having an APHA of not more than 40, characterizing by including producing a mixed alkanolamine by the reaction of an alkylene oxide with ammonia; removing low-boiling substances from the mixe... | 01/16/2007 |
| 7151148 | Castable golf ball components using acrylate functional resins Golf ball components, such as cores, intermediate layers, and covers, formed with compositions including precursors with acrylate functionality crosslinked with a curing agent. ... | 12/19/2006 |
| 7122684 | Process for preparing 1,2-diamino compounds The invention provides a multi-step process for preparing 1,2-diamino compounds of formula wherein R1, R1′, R2, R2′, R3 and R4 have the meanin... | 10/17/2006 |
| 7119231 | Method for producing alkanolamines At least one alkanolamine is prepared by reacting ammonia with alkylene oxide in a reaction space in the presence of a catalyst to give monoalkanolamine or dialkanolamine or trialkanolamine or a mixture of two or three of these compounds, the distribution of the var... | 10/10/2006 |
| 7001531 | Sustained release coolant additive composition A coolant additive composition comprising a sustained release component and an additive component, the additive component is effective to provide at least one benefit to a coolant when released into the coolant, the sustained release component includes a polymeric m... | 02/21/2006 |
| 6909018 | Preparation of polyalkeneamines Polyalkeneamines of the formula (I) where R1, R2, R3, R4, R5 and R6 may have different meanings, are prepared by a process in which a polyalkene epoxide... | 06/21/2005 |
| 6846959 | Process for producing alkanolamines A process for producing an alkanolamine includes supplying a reactive distillation apparatus having an inner contacting surface which simultaneously facilitates a reaction process and a distillation process, feeding a first reactant including an amine represented by... | 01/25/2005 |
| 6746623 | Alkyl glycidyl ether-capped diamine foam controlling agent The present invention pertains to a method for controlling the foaming of a waterborne composition or in an industrial process utilizing a waterborne composition by the incorporation of a foam controlling agent in an amount effective for controlling foam. The method... | 06/08/2004 |
| 6727389 | Cyclic organo-oxide storage vent scrubbing A method for processing at least one cyclic organo-oxide using a closed loop scrubber/holding tank system that contains at least one amine, and circulating the amine through the closed loop while admitting the cyclic organo-oxide to the closed loop. ... | 04/27/2004 |
| 6723880 | Preparation of secondary amines from primary amines A process for producing secondary amines of the formula R1R2N—A—NH—A—NR1R2, where R1 and R2 are linear or branched C1-20-alkyl radicals, optionally substituted with from 1 to 5 phen... | 04/20/2004 |
| 6632968 | Method for the production of amines from epoxidized olefins A process for preparing amines comprises reacting an epoxide of the formula (I) ##STR1## where R1, R2, R3 and R4 are each, independently of one another, hydrogen or a linear or branched, saturated or unsaturated... | 10/14/2003 |
| 6566556 | Method for production of alkanolamine and apparatus therefor A method for producing an alkanolamine from liquid ammonia in the presence of a solid catalyst efficiently with both the cost of equipment and the expense of utility repressed is provided. After not less than 60% of the ammonia has been recovered as liqui... | 05/20/2003 |
| 6563003 | Process to produce amino alcohol salts The present invention includes a number of novel intermediates such as the (S)-secondary alcohol of formula (VIIIA) X2 --CH2 --C*H(OH)--CH2 --NH--CO--RN (VIIIA) and processes for production of pharmacologically useful ox... | 05/13/2003 |
| 6559342 | Method of producing alkanolamines and apparatus for producing same In producing alkanolamines by use of a microporous material as a catalyst, the difficulty in industrially performing the production because of the short lifetime of the catalyst is resolved. A process of regenerating the catalyst by removing an organic su... | 05/06/2003 |
| 6403834 | Method for preparing tris(ether-amine) The invention concerns a method for preparing tris(ether-amines) of formula (I): N[A--O--(B--O)n --R]3 wherein R, A, B and n are as defined in Claim 1, comprising the reaction, in liquid phase, of an alkylene-glycol monoether of form... | 06/11/2002 |
| 6388041 | Polyoxyethylene derivatives having optionally protected amino group at one end and process for producing the same Disclosed are polyoxyethylene derivatives having different functional groups at both ends of the molecule represented by the following formula (I) and a process for producing the derivatives by anionic living polymerization. The present invention provides... | 05/14/2002 |
| 6388137 | Method of purifying triethanolamine Method of purifying triethanolamine prepared by reacting aqueous ammonia with ethylene oxide in the liquid phase under pressure and at elevated temperature by removing excess ammonia, water and monoethanolamine from the reaction product, reacting the resu... | 05/14/2002 |
| 6365708 | Polyamines and coating compositions with enhanced resistance to yellowing This invention relates to novel polyamines which are the reaction product of A) at least one nonaromatic diamine containing from 2 to 40 carbon atoms, wherein the amine groups are primary amine groups; and B) at least one epihalohydrin of the formula ##ST... | 04/02/2002 |
| 6291714 | Continuous process for effecting gas liquid reactions A continuous process for the production of polyadducts of alkylene oxide on a chain initiator with at least one active hydrogen comprises the step of: (a) providing n reaction units constituted by a tubular reactor (11), and a heat exchanger (14) downstre... | 09/18/2001 |
| 6222075 | Process for the production of N, N, N', N',-tetra-(2-hydroxyethyl)ethylene diamine A process is described for the production of N,N,N',N'-tetra-(2-hydroxyethyl)-ethylene diamine in a solvent, in which ethylene diamine is reacted selectively with ethylene oxide in the absence of water in one or more saturated C3 -C9... | 04/24/2001 |
| 6207121 | Composition and process for removal of acid gases Alkanolamines of the formula R--NHCH2 CH(OH)CH2 CH3 (I) or mixtures thereof wherein R is H, --CH2 CH(OH)CH2 CH3, an alkyl group having from 1 to 6 carbon atoms, an aryl group having from 6 to 1... | 03/27/2001 |
| 6169207 | Process for producing dialkanolamines The invention provides a process for producing dialkanolamines through amination of alkylene oxide with ammonia at liquid phase, in which side formation of trialkanolamines is inhibited and dialkanolamines can be produced with high selectivity and high ef... | 01/02/2001 |
| 6140541 | Process for preparing polyalkene amines Polyalkeneamines of the formula (I) ##STR1## where R1, R2, R3, R4, R5 and R6 may have different meanings, are prepared by a process in which a polyalkene epoxide is reacted with an ami... | 10/31/2000 |
| 6060625 | Process for the production of etheramine alkoxylates A process for the alkoxylation of a polyetheramine to form an etheramine alkoxylate. In the process, a polyetheramine is reacted with an alkylene oxide in the presence of an alcohol to form the etheramine alkoxylate. The alcohol serves as a catalyst to al... | 05/09/2000 |
| 5994585 | Amination process The present invention relates to an amination process for the manufacture of polyamines. The purpose of the process is to increase the selectivity of linear aminated products and to prevent the formation of discoloring by-products or by-products which may... | 11/30/1999 |
| 5874624 | Process for the preparation of a dihydroxyamino compound Disclosed are a process for the preparation of a dihydroxyamino compound in which water and discoloring ingredients are removed while preventing decomposition of a dihydroxyamino compound by distilling a crude reaction liquid containing an epoxy compound ... | 02/23/1999 |
| 5854312 | Aqueous hardeners for epoxy resin systems Described are aqueous emulsions of active amino groups-displaying epoxide adduct hardeners for curing epoxy resin systems, which are obtained by converting an aqueous solution of a conventional hardener, which contains reactive amino groups and can emulsi... | 12/29/1998 |
| 5840995 | Precursor for alkoxylation catalysts A precursor for alkoxylation catalysts is prepared by reacting a chelating anionic or nonionic phase transfer catalyst with an alkaline earth metal compound in the presence of a compound which can be alkoxylated. Suitable phase transfer catalysts are, in ... | 11/24/1998 |
| 5786405 | Amine-initiated polyether polyols and a process for their production Clear, amine-initiated polyether polyols are made by epoxidizing an amine in the presence of an alkali metal hydroxide catalyst. After the desired degree of epoxidation has been achieved, a hydroxy-carboxylic acid is added to the epoxidized mixture in an ... | 07/28/1998 |
| 5672761 | Method for reducing the viscosity of high viscosity polyether polyols The viscosity of polyether polyols characterized by functionalities greater than or equal to 1, viscosities greater than 500 mPa.multidot.s at 25° C. and at least 20% terminal secondary hydroxyl groups is reduced by converting at least one terminal hydro... | 09/30/1997 |
| 5672662 | Poly(ethylene glycol) and related polymers monosubstituted with propionic or butanoic acids and functional derivatives thereof for biotechnical applications Active esters of PEG acids and related polymers are provided that have a single propionic or butanoic acid moiety and no other ester linkages. These polymer acids have a half life in water of from about 10 to 25 minutes. For example, alpha-methoxy, omega-... | 09/30/1997 |
| 5633408 | Process for preparing alkanolamines A process for preparing alkanolamines which comprises steps of reacting ammonia with an alkylene oxide in the presence of a carbonate of ammonia to obtain a crude alkanolamine solution, distilling off ammonia, carbon dioxide and water to regulate the cont... | 05/27/1997 |
