| Patent application number | Description | Published |
|---|
| 20100087681 | Method of manufacturing ethyleamines - The present invention provides methods of manufacturing ethyleneamines that makes use of an ethyleneamine-generating process that is coupled to a transamination process. The combination of an ethyleneamine-generating process with a transamination process improves the mix flexibility that can be obtained from the single process allowing the production of ethyleneamine compositions having an improved and more desirable product mix. | 04-08-2010 |
| 20100087682 | Low metal loaded, catalyst compositions including acidic mixed metal oxide as support - The invention provides a catalyst composition composed of a support portion and a catalyst portion. The support portion includes an acidic mixed metal oxide including a transitional alumina and a second metal oxide. The transitional alumina can comprise delta or theta alumina, in combination with other transitional phases, or an alpha or gamma alumina. The second metal oxide has a weight percentage that is less than the weight percentage of alumina. The catalyst portion is 25 weight percent or less of the catalyst composition and is composed of nickel and rhenium. The catalyst portion includes nickel in an amount in the range of 2 to 20 weight percent, based upon total catalyst composition weight, and there is no boron in the catalyst portion. | 04-08-2010 |
| 20100087685 | Transalkoxylation of nucleophilic compounds - A method of transalkoxylation of nucleophilic compounds in which an alkoxylated and a nucleophilic compound are combined in a suitable vessel and reacted in the presence of a heterogeneous catalyst under conditions capable of transferring at least one hydroxyalkyl group from the alkoxylated compound to the nucleophilic compound. The method is especially useful in the transalkoxylation of alkanolamines to transfer a hydroxyalkyl group from an alkanolamine having a greater number of hydroxyalkyl groups to an alkanolamine having a lesser number of hydroxyalkyl groups. | 04-08-2010 |
| 20100094007 | Methods of making cyclic, N-amino functional triamines - The present invention provides strategies for making cyclic triamines. Reactant media including certain precursors and/or certain types of catalysts can be converted into cyclic triamines with improved conversion and selectivity. The strategies can be incorporated into reactions that involve transamination schemes and/or reductive amination schemes. In the case of transamination, for instance, using transamination to cause ring closure of higher amines in the presence of a suitable catalyst leads to desired cyclic triamines with notable conversion and yield. In the case of reductive amination, reacting suitable polyfunctional precursors in the presence of a suitable catalyst also yields cyclic triamines via ring closure with notable selectivity and conversion. Both transamination and reductive amination methodologies can be practiced under much milder temperatures than are used when solely acid catalysts are used. Preferred embodiments can produce reaction mixtures that are generally free of salt by-products. | 04-15-2010 |
| 20100094008 | Methods of making cyclic, n-amino functional triamines - The present invention provides strategies for making cyclic triamines. Reactant media including certain precursors and/or certain types of catalysts can be converted into cyclic triamines with improved conversion and selectivity. The strategies can be incorporated into reactions that involve transamination schemes and/or reductive amination schemes. In the case of transamination, for instance, using transamination to cause ring closure of higher amines in the presence of a suitable catalyst leads to desired cyclic triamines with notable conversion and yield. In the case of reductive amination, reacting suitable polyfunctional precursors in the presence of a suitable catalyst also yields cyclic triamines via ring closure with notable selectivity and conversion. Both transamination and reductive amination methodologies can be practiced under much milder temperatures than are used when solely acid catalysts are used. Preferred embodiments can produce reaction mixtures that are generally free of salt by-products. | 04-15-2010 |
| 20100137642 | Low metal loaded, alumina supported, catalyst compositions and amination process - The present invention provides catalyst compositions useful for transamination reactions. The catalyst compositions have a catalyst support that includes transitional alumina, use a low metal loading (for example, less than 25 wt. %), and do not require the presence of rhenium. The catalyst compositions are able to advantageously promote transamination of a reactant product (such as the transamination of EDA to DETA) with excellent activity and selectivity, and similar to transaminations promoted using a precious metal-containing catalyst. | 06-03-2010 |
| 20100280277 | PROCESS FOR MAKING ETHERS FROM ALKOXIDE ANIONS OR PRECURSORS OF ALKOXIDE ANIONS - Improved methods for making ethers. In particular, an alkoxide can be more effectively converted into an ether by reaction with a hydrocarbyl halide in the presence of a substantial excess of a hygroscopic base such as NaOH. When present in such an unconventional excess, the base serves multiple functions. As a consequence, the alkoxide is extensively converted to the desired ether rapidly at excellent yields. The reaction environment also aids later product isolation. The use of the NaOH rather than Na metal allows the ether product to be separated from water soluble impurities such as salt products, left over base, left over hydrocarbyl halide, formates, etc. by liquid-liquid extraction among aqueous and organic phases. | 11-04-2010 |
| 20120277435 | METHODS OF MAKING CYCLIC, N-AMINO FUNCTIONAL TRIAMINES - The present invention provides strategies for making cyclic triamines. Reactant media including certain precursors and/or certain types of catalysts can be converted into cyclic triamines with improved conversion and selectivity. The strategies can be incorporated into reactions that involve transamination schemes and/or reductive amination schemes. In the case of transamination, for instance, using transamination to cause ring closure of higher amines in the presence of a suitable catalyst leads to desired cyclic triamines with notable conversion and yield. In the case of reductive amination, reacting suitable polyfunctional precursors in the presence of a suitable catalyst also yields cyclic triamines via ring closure with notable selectivity and conversion. Both transamination and reductive amination methodologies can be practiced under much milder temperatures than are used when solely acid catalysts are used. Preferred embodiments can produce reaction mixtures that are generally free of salt by-products. | 11-01-2012 |
| 20130023698 | LOW METAL LOADED, ALUMINA SUPPORTED, CATALYST COMPOSITIONS AND AMINATION PROCESS - The present invention provides catalyst compositions useful for transamination reactions. The catalyst compositions have a catalyst support that includes transitional alumina, use a low metal loading (for example, less than 25 wt. %), and do not require the presence of rhenium. The catalyst compositions are able to advantageously promote transamination of a reactant product (such as the transamination of EDA to DETA) with excellent activity and selectivity, and similar to transaminations promoted using a precious metal-containing catalyst. | 01-24-2013 |
| 20130204044 | DECOLORIZATION OF AMINES - The present invention provides methods that are used to decolorize compositions containing one or more amines in the presence of one or more weak acids. Significantly, the weak acids, particularly organic acids such as glacial acetic acid, when used in combination with a heat treatment produce dramatically less by-products than do the stronger mineral acids, making heat treatments and subsequent separation techniques more effective while producing less waste. In some modes of practice, the weak acids do not need to be neutralized, eliminating neutralizing steps and waste streams associated with neutralization. Low color products can be obtained easily at very high yield as a consequence. | 08-08-2013 |
| 20130225864 | TRANSAMINATION OF NITROGEN-CONTAINING COMPOUNDS TO HIGH MOLECULAR WEIGHT POLYALKYLENEAMINES - A process for preparing high molecular weight acyclic polyamines comprising providing a reaction mixture that includes at least a first component comprising a first organic, nitrogen-containing compound that contains at least two non-tertiary amine groups separated from one another by a ternary or higher carbon atom spacing that can be transaminated in the presence of a hydrogenation/dehydrogenation catalyst to form a mixture of higher molecular weight, acyclic polyamines while minimizing the formation of cyclic polyamines. | 08-29-2013 |
| 20130231476 | TRANSAMINATION OF NITROGEN-CONTAINING COMPOUNDS TO MAKE CYCLIC AND CYCLIC/ACYCLIC POLYAMINE MIXTURES - A transamination process is described to prepare polyamine product mixtures from reactants comprising mixed nitrogen-containing compounds with binary carbon spacing between nitrogen-containing groups (a binary component). A second nitrogen-containing component with a second carbon atom spacing between nitrogen-containing groups may also be employed. The molar ratio between the binary and second components can be adjusted to customize the product composition for desired end uses. | 09-05-2013 |
| 20130274522 | PROCESSES FOR SEPARATING ONE OR MORE AMINE BYPRODUCTS FROM ONE OR MORE DESIRED AMINES - The present invention relates to separating one or more amine byproducts from one or more desired amines. More particularly, the invention involves forming a byproduct component with one or more amine byproducts and a first adjuvant component. The byproduct component has an enhanced separation characteristic relative to separating the amine byproducts from the desired amines in the absence of an adjuvant. Preferably, the byproduct component is separated in the presence of a second adjuvant component that preferably has a boiling point less than the boiling point of the first adjuvant component. | 10-17-2013 |
| 20140330042 | PROCESS FOR MAKING ETHOXYLATED AMINE COMPOUNDS - An improved process for making ethoxylated amine compounds such as ethanolamines. The improvement comprises the addition of an acid to the amine compound prior to the addition of ethylene oxide to a reactor wherein the ethoxylated amine compound is prepared. The improvement reduces the concentration of undesirable glycol ether and/or vinyl ether ethoxylate byproducts which may contribute to undesirable properties, such as color and foaming, of the ethoxylated amine compounds. | 11-06-2014 |
| 20140357750 | AMINE POLYETHER POLYOLS AND POLYURETHANE FOAM COMPOSITIONS MADE FROM CYCLIC AMINE COMPOUNDS - The present invention describes cyclic amine compounds useful for catalysts forpolyurethane form-forming compositions, as well as amine alkoxylates and amine polyether polyols formed form the cyclic amines. The cyclic amine compounds of the invention provide distinct benefits for reaction compositions, methods, and polyurethane foams based on their desirable physical and catalytic properties. | 12-04-2014 |
| 20140371452 | REDUCTIVE AMINATION OF DIETHANOLAMINE AND RESULTING PRODUCT MIXTURE - The invention provides a method for the reductive amination of diethanolamine to form a product composition that includes piperazine (PIP) and aminoethylethanolamine (AEEA). A catalyst with a transitional alumina/second metal oxide support and a mixture of catalytic metals is used for the reaction which results in low levels of non-PIP and non-AEEA side products. | 12-18-2014 |
| 20150087837 | RHENIUM RECOVERY FROM USED REDUCTIVE AMINATION CATALYSTS - The present invention provides techniques that selectively recover Re from reductive amination catalysts. In particular, the present invention allows Re to be recovered selectively relative to Ni, Co, and/or Cu, and particularly Ni, that are often present on reductive amination catalysts. The present invention uses a combination of oxidation and extraction techniques to selectively recover Re relative to Ni, Co, and/or Cu. Advantageously, the recovery is selective even when using aqueous solutions for extraction. | 03-26-2015 |
