Abstract: A process for hydrogenating bound oxygen-containing organic feeds into their corresponding alcohols by contact with a coprecipitated copper-aluminum catalyst that has been activated by contact with reducing gas at a temperature that gradually increases.
Type:
Grant
Filed:
December 21, 1989
Date of Patent:
October 1, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: Disclosed are surface-active polycarbodiimides containing a hydrophilic portion and a hydrophobic portion joined through the reaction of a carbodiimide group with a reactive functional group. The surface-active polycarbodiimides may be linear or branched, monodisperse or polydisperse, but preferably are of the branched, monodispers type. The surface-active polycarbodiimides are useful as surfactants, and are particularly useful as emulsifiers in cross-linkable, carboxyl-containing resin systems, such as aqueous latexes.
Type:
Grant
Filed:
January 30, 1989
Date of Patent:
September 10, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: Perovskites of the structure A.sub.2 B.sub.2 C.sub.3 O.sub.10 are useful as catalysts for the oxidative coupling of lower alkane to heavier hydrocarbons. A is alkali metal; B is lanthanide or lanthanum, cerium, neodymium, samarium, praseodymium, gadolinium or dysprosium; and C is titanium.
Type:
Grant
Filed:
September 19, 1989
Date of Patent:
June 25, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: Active-hydrogen compounds, for example, primary and secondary alcohols or diols, are alkoxylated, for example, ethoxylated, using solid anion-bound metal oxide catalysts, such as, zirconium oxysulfate catalyst. Hydrous zirconium oxide is treated with solutions of sulfate phosphate, nitrate or tetrafluoroborate and calcined in air at 300.degree. to 950.degree. C. to produce highly active heterogeneous alkoxylation catalysts. The amorphous catalysts afford narrow molecular weight products. The catalyst can be removed from the product by filtration and reused with no significant loss in activity. Reaction temperatures of 50.degree. to 140.degree. C. are employed for alkoxylation.
Type:
Grant
Filed:
June 13, 1989
Date of Patent:
June 18, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: This invention relates to a process for making amines by condensing an amino compound in the presence of a metallic polyphosphate condensation catalyst having a condensed structure. This invention also relates to an alkyleneamines producers composition rich in triethylenetetramine (TETA), tetraethylenepentamine (TEPA) and pentatethylenehexamine (PEHA).
Type:
Grant
Filed:
August 8, 1989
Date of Patent:
January 8, 1991
Assignee:
Union Carbide Chemicals and Plastic Company Inc.
Inventors:
Arthur R. Doumaux, Jr., David J. Schreck
Abstract: A process for the transvinylation of a vinyl derivative of a Bronsted acid with a different Bronsted acid which comprises providing a liquid phase mixture containing said vinyl derivative and said Bronsted acid in the presence of a ruthenium compound at a temperature at which transvinylation occurs and recovering as a product of transvinylation the vinyl derivative of the different Bronsted acid. The process is most favorably employed using carboxylic acids to make vinyl esters of carboxylic acids.
Type:
Grant
Filed:
June 30, 1988
Date of Patent:
January 1, 1991
Assignee:
Union Carbide Chemicals and Plastics Company, Inc.
Abstract: A continuously generated alkyleneamines producers composition comprising, based on 100% of the moles of the composition and exclusive of any MEA and water present,(a) about 15 to about 50 mole % AEEA,(b) about 15 to about 55 mole % EDA,(c) about 10 to about 20 mole % DETA,(d) about 5 to about 20 mole % of the combination of PIP, AEP and HEP,(e) about 3 to about 10 mole % of one or more of TETAs and TEPAs,(f) less than about 1 mole % of other polyalkylene polyamines,(g) an DETA to AEEA mole ratio less than 0.77, and(h) an EDA to AEEA mole ratio less than 8;and a process of manufacturing the same, which comprises feeding hydrogen, ammonia and MEA to a reaction zone containing a fixed bed of a reductive amination catalyst, wherein the hydrogen comprises about 20 to about 60 mole percent of the feed in the reaction zone and the mole ratio of ammonia to MEA is about 1 to about 5, the temperature of the reaction zone is about 120.degree. C. to about 300.degree. C.
Type:
Grant
Filed:
September 30, 1987
Date of Patent:
December 11, 1990
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Abstract: Alkanolamines can be converted to a cyclic or a cyclic alkylamines and aziridines and/or other cyclic or acyclic alkanolamines by contacting the alkanolamines with a molecular sieve selected from the group consisting of (a) non-zeolitic molecular sieves; and (b) zeolites having a silicon:aluminum ratio of at least about 6, the contacting of the alkanolamine starting material with the molecular sieve being effected under conditions effective to convert the alkanolamine starting material into at least one of the specified products.
Type:
Grant
Filed:
December 18, 1987
Date of Patent:
November 27, 1990
Assignee:
Union Carbide Chemicals and Plastics Company, Inc.
Abstract: A continuously generated alkyleneamines producers composition comprising, based on 100% of the moles of the composition and exclusive of any MEA and water present,(a) about 50 to about 90 mole % AEEA,(b) less than about 3 mole % EDA but more than 0.01 mole % EDA,(c) less than about 2 mole % DETA but more than 0.01 mole % DETA,(d) about 5 to about 18 mole % of the combination of PIP, AEP and HEP,(e) about 5 to about 20 mole % of one or more of TETAs and TEPAs,(f) less than about 1 mole % of other polyalkylene polyamines,(g) a mole ratio of AEEA to the combination of PIP, AEP, HEP, DETA and EDA is greater than about 2.
Type:
Grant
Filed:
September 30, 1987
Date of Patent:
November 27, 1990
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Abstract: Capped connected branch copolymers are provided comprising a core segment, branched polymer segments attached to the core segment, linear polymer segments attached to the terminals of the branched polymer segments, and cap segments, which comprise residues of an alkylene oxide containing at least 4 carbon atoms and which are attached to the free terminals of the linear polymer segments. These capped copolymers are less water-soluble than the uncapped connected branched copolymers from which they are derived, and are useful in carbonless copying systems as carriers for the color precursor microcapsules. The microcapsules can be applied to the carbonless copying sheet by dispersing the microcapsules in the capped copolymer, heating the copolymer above its transition temperature and spreading the melted copolymer over the sheet. After cooling, the copolymer forms a coherent layer on the sheet.
Type:
Grant
Filed:
May 24, 1989
Date of Patent:
August 7, 1990
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Abstract: This invention relates to the use of calcium sulfate as a catalyst in the preparation of alkoxylation products, i.e., condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen, that have beneficial, narrow molecular weight ranges.
Type:
Grant
Filed:
September 30, 1988
Date of Patent:
August 7, 1990
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Abstract: A continuous process for efficiently co-producing secondary alcohols of long-chain olefins and lower carboxylic acid esters, comprising (I) performing an acid/olefin reaction in the presence of a heterogeneous catalyst such as Amberlyst 15, and (II) performing an ester-exchange reaction in the presence of, e.g., titanium alcoholate. A desirable feature of the process is the ability to produce co-products of choice.
Type:
Grant
Filed:
April 19, 1989
Date of Patent:
May 22, 1990
Assignee:
Union Carbide Chemicals and Plastics Company, Inc.
Inventors:
Robert J. Knopf, Louis F. Theiling Jr., Leroy P. Berti
Abstract: This invention relates to heterogeneous (organic polymer-supported) calcium-containing catalysts and the use thereof in the preparation of alkoxylation products, i.e., condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen. In another aspect of this invention, processes are provided for preparing heterogeneous (organic polymer-supported) calcium-containing catalysts for alkoxylation using calcium oxide or calcium hydroxide as sources for the catalytically-active calcium. In a further aspect of this invention, alkoxylation products are provided that have beneficial, narrow molecular weight ranges and are essentially neutral in pH and free from catalyst residues.
Abstract: Enhanced production of predominantly linearly extended polyalkylene polyamines from alkylenediamines reacted with alkylene glycols or alkanolamines using a phosphorus-containing catalyst is achieved by removing water during the reaction.
Type:
Grant
Filed:
February 7, 1984
Date of Patent:
December 19, 1989
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Abstract: Narrow, balanced alkoxylation product mixture distributions having at least one alkoxylation product constituting more than 20 weight percent of the mixture can be provided by modified, calcium-containing catalysts. Catalysts for alkoxylation processes can be produced from lime and can, with modification, be used to make the narrow, balanced alkoxylation product mixture distribution.
Type:
Grant
Filed:
October 6, 1986
Date of Patent:
December 12, 1989
Assignee:
Union Carbide Chemicals and Plastics Company Inc.
Inventors:
Robert J. Knopf, Louis F. Theiling, Jr.
Abstract: Active-hydrogen compounds, for example, primary and secondary alcohols or diols, are alkoxylated, for example, ethoxylated, using solid anion-bound metal oxide catalysts, such as, zirconium oxysulfate catalyst. Hydrous zirconium oxide is treated with solutions of sulfate phosphate, nitrate or tetrafluoroborate and calcined in air at 300.degree. to 950.degree. C. to produce highly active heterogeneous alkoxylation catalysts. The amorphous catalysts afford narrow molecular weight products. The catalyst can be removed from the product by filtration and reused with no significant loss in activity. Reaction temperatures of 50.degree. to 140.degree. C. are employed for alkoxylation.
Abstract: Lubricant compositions having good dilution viscosity characteristics and high viscosity/pressure coefficients can be produced using a connected branch copolymer having a core segment, non-crosslinked branched polymer segments connected to the core segment and a group of linear polymer segments connected to the branched polymer segments and bearing terminal groups capable of effecting hydrogen bonding. These connected branch copolymers are used in aqueous lubricant compositions, which may include a co-solvent such as ethylene or diethylene glycol.
Abstract: Capped connected branch copolymers are provided comprising a core segment, branched polymer segments attached to the core segment, linear polymer segments attached to the terminals of the branched polymer segments, and cap segments, which comprise residues of an alkylene oxide containing at least 4 carbon atoms and which are attached to the free terminals of the linear polymer segments. These capped copolymers are less water-soluble than the uncapped connected branched copolymers from which they are derived, and are useful in carbonless copying systems as carriers for the color precursor microcapsules. The microcapsules can be applied to the carbonless copying sheet by dispersing the microcapsules in the capped copolymer, heating the copolymer above its transition temperature and spreading the melted copolymer over the sheet. After cooling, the copolymer forms a coherent layer on the sheet.
Abstract: A continuous process is provided for preparing alkanolamines having a high yield of monoalkanolamine, which comprises continuously reacting a flowing stream of a homogeneous mixture of an alkylene oxide having from two to four carbon atoms and ammonia in a molar ratio of ammonia to alkylene oxide within the range from about 15:1 to about 50:1 at temperatures above the critical temperature of the mixture and at pressures above the critical pressure of the mixture and maintaining the mixture in a single phase having a density of at least 15 lbs./cu.ft. for the time necessary to form an alkanolamine product mixture containing at least about 65% by weight monoalkanolamine.
Type:
Grant
Filed:
May 16, 1988
Date of Patent:
July 11, 1989
Assignee:
Union Carbide Corporation
Inventors:
Charles A. Gibson, Moinuddin Ahmed, James R. Nelson
Abstract: A process is provided for preparing alkanolamines having a high yield of monoalkanolamine which comprises reacting in a reaction mixture an alkylene oxide having from two to four carbon atoms with ammonia in a molar ratio of ammonia to alkylene oxide within the range from about 15.1 to about 50.1 at temperatures above the critical temperature of the reaction mixture and at pressures above the critical pressure of the reaction mixture and high enough to maintain the reaction mixture at sufficiently high fluid densities.
Type:
Grant
Filed:
May 12, 1988
Date of Patent:
July 4, 1989
Assignee:
Union Carbide Corporation
Inventors:
Moinuddin Ahmed, James R. Nelson, Charles A. Gibson