Inventor: Robert L. Zimmerman

Address: Austin, TX
No. of patents: 83
Last patent issue date: 03/20/2012

Number	Title	Issue Date
8138378	Reactive amine catalysts for polyurethane foam A process for the separation of a first amine having a tertiary amine group and a secondary amine group such as N,N,N′-trimethylbis(aminoethyl)ether from a di-tertiary amine such as N,N,N′,N′-tetramethylbis(aminoethyl)ether, comprising: contacting a mixture of...	03/20/2012
7579426	Heat activated tertiary amine urethane catalysts This invention concerns a compound formed from a tertiary amine-carboxylic acid salt, where the carboxylic acid and tertiary amine are selected such that the catalyst salt is blocked at room temperature and becomes unblocked at an elevated temperature. The compound ...	08/25/2009
7351859	Heat activated tertiary amine urethane catalysts This invention concerns a compound formed from a tertiary amine-carboxylic acid salt, where the carboxylic acid and tertiary amine are selected such that the catalyst salt is blocked at room temperature and becomes unblocked at an elevated temperature. The compound ...	04/01/2008
7049265	Organic anion catalyst system for foams Disclosed herein are compositions useful for introducing metal carboxylate salts as catalysts into systems useful for producing polyurethane and polyisocyanurate foams. The methods permit the introduction of such catalysts in the absence of substantial amounts of wa...	05/23/2006
6605684	Method of preparing spray elastomer systems This invention concerns a method for the preparation of polyurea elastomers, comprising: (a) reacting an amine chain extender with dialkyl maleate to form an aspartic ester, wherein the chain extender has a molar amount of amine groups that is greater tha...	08/12/2003
6534555	Catalyst systems for polyurethane polyester foams Provided are catalyst systems which produce flexible polyurethane polyester foams that are color stable, are lower in odor, and uses less catalysts than current most commonly practiced technology. The use of lower amounts of catalysts with low vapor press...	03/18/2003
6495722	Mannich polyols for rigid spray foams Provided herein are polyurethane foams which may be prepared by spray techniques. The foams of the invention are prepared using conventional isocyanates and a novel Mannich condensate polyol having a hydroxy number in the range of 250-340 and a viscosity ...	12/17/2002
6399736	Method of preparing spray elastomer systems This invention concerns a method for the preparation of polyurea elastomers, comprising: (a) reacting an amine chain extender with dialkyl maleate to form an aspartic ester, wherein the chain extender has a molar amount of amine groups that is greater tha...	06/04/2002
6013755	Method of preparing an aliphatic polyurea spray elastomer system This invention concerns a method for the preparation of polyurea elastomers, comprising: (a) reacting an amine chain extender with dialkyl maleate to form an aspartic ester, wherein the chain extender has a molar amount of amine groups that is less than t...	01/11/2000
5616677	Preparation of sprayable aliphatic polyurea elastomers having improved properties This invention discloses an aliphatic spray polyurea elastomer comprising an (A) component that includes an aliphatic isocyanate and a (B) component that includes (1) an amine-terminated polyoxyalkylene polyol and (2) a cycloaliphatic diamine chain extend...	04/01/1997
5383942	Fuel composition An amido alkanolamine composition obtained by reacting, at a temperature of 10° C.-200° C.: (a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms; and...	01/24/1995
5286267	Polyether hydroxyethylaminoethyl oxalamide motor fuel detergent additives The present invention provides a novel class of compounds, useful as gasoline detergent additives, which is a polyether hydroxyethylaminoethyl oxalamide represented by the formula ##STR1## where R is a (C5 -C25) alkyl group and ...	02/15/1994
5254737	Continuous preparation of secondary amines from nitriles using a two-step process A method for producing secondary amines, particularly fatty secondary amines such as ditallowamine from fatty nitriles, such as tallow nitrile over a reduction, hydrogenation catalyst, such as nickel or cobalt, in two steps has been discovered. The reacti...	10/19/1993
5241016	Epoxy adhesives containing aminated, long chain monoepoxide capped polyols The invention is an epoxy resin adhesive composition. The composition comprises: A. An epoxy resin component; and B. A curative component comprising: a curing amount of a polyamine curing agent and 2 to 30 phr. of an adhesion enhancer of comprising a partially...	08/31/1993
5239041	Hindered amines to slow down reactivity in producing rim elastomers A process for preparing a polyurea reaction injection molded (RIM) elastomer is described. A hindered polyetherpolyamine is first obtained by reacting a polyol having two or more hydroxyl groups with an effective amount of long chain alkyl epoxide to give...	08/24/1993
5234478	Fuel additive method of preparation and motor fuel composition An amido alkanolamine composition obtained by reacting, at a temperature of 10° C.-200° C.: (a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and...	08/10/1993
5218005	Polyurea elastomers made using polyamine/carbonyl adducts as chain extenders Low molecular weight, polyoxyalkylene polyamine reacts with carbonyl compound making polyamine adduct used as chain extender in preparing tack-free, smooth polyurea elastomers, useful in solventless spray coatings....	06/08/1993
5216154	Process for the preparation of n-methylmorpholine oxide N-methylmorpholine oxide which is essentially free from nitrosamine contaminants is prepared by oxidizing a feedstock consisting essentially of N-methylmorpholine with an oxidant consisting essentially of aqueous hydrogen peroxide in an atmosphere consist...	06/01/1993
5203879	Fuel composition An amido alkanolamine composition obtained by reacting, at a temperature of 10° C.-200° C.: (a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, an...	04/20/1993
5189221	Amine separation process A mixture of C1 -C4 mono-, di- and trialkylamines is separated by adding at least about an equimolar amount, based on the amine mixture, of a formyldialkanolamine selected from the group consisting of formyldiethanolamine, formyl ami...	02/23/1993
5189075	Polyurea elastomers made using polyoxyalkylene tetra-or higher functional amine chain extenders Polyurea elastomers, made using low molecular weight polyoxyalkylene polyamines, like aminated, propoxylated ଱-methyl glucoside, as chain extenders for reactions of polyoxyalkylene polyamine with polyisocyanate, have improved spray and foam properti...	02/23/1993
5140097	Thermoplastic thermosettable polyamide from poly(oxytetramethylene) diamine and poly(oxytetramethylene) oligomer polyamine Polyamide reaction products comprising: a dicarboxylic acid and a diamine component comprising a mixture of poly(oxytetramethylene) diamines and oligomers of said poly(oxytetramethylene) diamines, said mixture containing from about 85 to about 99.5 wt. % of sa...	08/18/1992
5130491	Continuous preparation of secondary amines from nitriles using a nickel catalyst A method for producing secondary amines, particularly fatty secondary amines such as ditallowamine from fatty nitriles, such as tallow nitrile over a nickel catalyst promoted with copper, chromium and molybdenum has been discovered. The reaction gives hig...	07/14/1992
5091585	Continuous preparatin of tertiary aliphatic methyl amines A method for continuous production of tertiary aliphatic methyl amines, particularly fatty aliphatic methyl amines such as di-hydrogenated tallow methyl amine from fatty alkyl amines, such as di-hydrogenated tallow amine over a nickel catalyst has been di...	02/25/1992
5075506	Continuous preparation of secondary amines from nitriles using cobalt and zirconium A method for producing secondary amines, particularly fatty secondary amines such as ditallowamine from fatty nitriles, such as tallow nitrile over a cobalt catalyst promoted with zirconium has been discovered. The catalyst may be supported on kieselguhr ...	12/24/1991
5037838	Method for the manufacture of triethylenediamine using a pelleted titania-supported tungstopyrophosphate catalyst N-hydroxyethyl piperazine is converted to triethylenediamine using a titania-supported tungstopyrophosphate catalyst....	08/06/1991
5013813	Polyurea elastomer with rapid dry time A polyurea elastomer which exhibits a rapid dry time is disclosed. The elastomer includes an isocyanate, an amine terminated polytetrahydrofuran and a chain extender. The isocyanate is preferably a quasi-prepolymer of an isocyanate and a material selected...	05/07/1991
5003107	Catalytic method for the reductive amination of poly(oxytetramethyle) glycols Poly(oxytetramethylene) diamines useful in the preparation of polyamide and polyurea elastomers are prepared by the catalytic reductive amination of a poly(oxytetramethylene) glycol feedstock under reductive amination conditions in the presence of ammonia...	03/26/1991
4994621	Aminated, alkoxylated hydroxyl-terminated polybutadienes Aminated, alkoxylated hydroxyl-terminated polymers are made by a process involving first polymerizing one or more unsaturated hydrocarbons, such as butadiene, to form a liquid polymer. Next, the liquid polymer is provided with terminal hydroxyl groups. Th...	02/19/1991
4826930	Melamine-diamine condensates and the cure of 1,2-epoxide resins therewith Novel melamine-poly(oxyethylene or oxypropylene) diamine condensates are prepared which have the formula: ##STR1## Wherein: R represents H or R' represents H or --CH3, R" represents H or -CH3 or CH2 CH3, x repre...	05/02/1989
4825000	Phenyl glycidyl ether modified polyoxyalkylene diamines and epoxy resin compositions therefrom A series of polyoxyalkylene diamines modified with phenoxy groups is disclosed. This series of diamines is of the general formula: ##STR1## wherein R1 and R2 are independently hydrogen or an alkyl of 1 to 4 carbon atoms, R3...	04/25/1989
4810261	Reaction product additive and ori-inhibited motor fuel composition A novel gasoline-soluble reaction product, a concentrate comprising the reaction product dissolved in a hydrocarbon solvent, and a haze-free, deposit-resistant and ORI-inhibited motor fuel composition comprising the reaction product is described. The reac...	03/07/1989
4789689	Amine catalyst for urethanes Covers a method of producing a polyurethane by utilizing specific amine compounds of high activity as a catalyst in reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of said catalyst. Said amines fall ...	12/06/1988
4769438	Aminated propoxylated 1,4-butanediol epoxy resin adducts as epoxy resin curatives Diamines of the formula: are modified with 5 to 50 wt % of a diglycidyl ether of bisphenol A to form a prepolymer. When reacted with an epxoy resin, these modified diamines impart improved properties to the cured resin compared with the unmodified amine. ...	09/06/1988
4747851	Novel polyoxyalkylene diamine compound and ori-inhibited motor fuel composition A novel gasoline-soluble polyoxyalkylene diamine compound, a concentrate comprising the compound dissolved in a hydrocarbon solvent, and a haze-free, deposit-resistant and ORI-inhibited motor fuel composition comprising the compound is described. Motor fu...	05/31/1988
4742168	Anti-caking agent for triethylenediamine The use of certain oxyalkyl amines as anti-caking agents for triethylenediamine (TEDA) is disclosed. The anti-caking agent comprises polyoxypropylene amines or their amides, the amines having the formula: ##STR1## wherein X is hydrogen, a methyl radi...	05/03/1988
4698428	Catalytic method for the manufacture of N,N'-dimethylpiperazine It has been surprisingly discovered in accordance with the present invention that N-methylethanolamine may be converted to N,N'-dimethylpiperazine when using a catalyst composed of titania to which from about 0.5 to about 7 wt. % of phosphorus has been th...	10/06/1987
4647664	Catalytic method for the manufacture of N-alkylmorpholines N-alkylmorpholines are prepared by passing a reaction mixture over a catalyst composed of titania to which from about 0.5 to about 7 wt. % of phosphorus has been thermally chemically bonded in the form of phosphate linkages, the reaction mixture being com...	03/03/1987
4615771	Method of separating bis-(2-aminoethyl)ether from N-(2-methoxyethyl)morpholine by azeotropic distillation and extraction A method for the separation of bis-(2-aminoethyl)ether from N-(2-methoxyethyl)morpholine via azeotropic distillation using an entrainer such as monoethanolamine is described. The N-(2-methoxyethyl)morpholine is selectively removed by the monoethanola...	10/07/1986
4579630	Method of separating primary amines from tertiary amines by azeotropic distillation A method for the separation of primary amines such as bis-(2-aminoethyl)ether from tertiary amines such as N-(2-methoxyethyl)morpholine which have close boiling points via azeotropic distillation using an entrainer such as monoethanolamine is describ...	04/01/1986

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Inventor: Robert L. Zimmerman