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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Speranza; George P.
Address:
Austin, TX
No. of patents:
155
Patents:


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Patent Number Title Of Patent Date Issued
H1043 Bis-hydroxy diamides and methods therefor April 7, 1992
Novel bis-hydroxy diamides having the formula: ##STR1## where R is an alkyl or aryl moiety having from 3 to 10 carbon atoms and where x ranges from 1 to 6 may be produced by reacting dicarboxylic acids with polyethylene glycol monoamines. Suitable dicarboxylic acids include adipi
6503891 Water emulsifiable formulations January 7, 2003
A composition comprising an organic carbonate such as propylene carbonate and O,O-diethyl-O-(2-isopropyl-4-methyl-6-pyrimidinyl)phosphorothioate, S-[1,2-bis(ethoxycarbonyl)ethyl]O,O-dimethylphosphorodithioate, or 6,7,8,9,10, 10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-ben
5414087 Preparation of N-alkylpiperazines May 9, 1995
Disclosed is a one-step method for preparing N-alkylpiperazines which eliminates the initial preparation and isolation of piperazine which comprises reacting a carbonyl compound and an amine in the presence of hydrogen over a metallic hydrogenation-dehydrogenation catalyst from Group
5391826 Amidopolyamines derived from amino-carboxylic acid February 21, 1995
Diamidopolyamines are prepared by reacting glutamic acid with two moles, per mole of glutamic acid, of a defined class of diamines, including oxyethyelene diamines, oxypropylenediamines, oxyethylene/propylene diamines, oxypropylene triamines, 1,2-diaminocyclohexane and isophorone dia
5342918 Carboxyl-terminated polyetheramines August 30, 1994
Described are carboxyl-terminated polyetheramides of the formula: ##STR1## where R is a moiety from an alcohol or hydroxy compound having a valence of k; R' is independently hydrogen or lower alkyl from 1 to 4 carbon atoms; R" is independently a straight or branched alkylene or aroma
5324838 Bicyclo[4.3.0]1,4,7-triazanon-4-ene-one useful in the extraction of precious metals June 28, 1994
Bicyclo[4.3.0]1,4,7-triazanony-6-ene-5-one may be made easily, in good yield and in one step by reacting diethyl oxalate with a diethylene triamine. The bicyclo[4.3.0]1,4,7-triazanon-6-ene-5-one material made by this process may be used to selectively separate metal ions from solution,
5324812 Water soluble polyamide from polyalkylene glycol diamines and polycarboxylic acids June 28, 1994
Water soluble polyamides may be produced by reacting two different dicarboxylic acids with at least one low molecular weight poly(alkylene glycol) diamine and at least one relatively high molecular weight polyoxyalkylene diamine. One dicarboxylic acid may be of low molecular weight,
5298618 Macrocyclic oxamides March 29, 1994
Macrocyclic oxamides may be made easily, in good yield and in one step by reacting an oxalic compound, such as oxalic acid or oxalic esters, with a diamine, where the amine groups are separated by at least five atoms. The oxalic compounds may include, but are not limited to such material
5276192 Preparation of phenoxyethanamines January 4, 1994
A process for preparing phenoxyethanamines from phenols and 2-oxazolines in quantitative yields was discovered. Phosphoric acid hydrolyzes the amide intermediate from the phenol/2-oxazoline reaction without cleaving the amide at the ether linkage and without undesired aromatic ring s
5264132 Method of removing alkaline materials from waste water November 23, 1993
Disclosed is a method for removing ammonia, organic amines and alkaline impurities from waste water which comprises using a partially spent ion exchange resin which no longer meets the purity requirements for the production of MTBE, washing the catalyst with water, contacting it with
5254668 Polyamidopolyfunctional amine from lactam and ether amine October 19, 1993
Amidamines of the following formula are described: ##STR1## where R is independently hydrogen or lower alkyl of 1 to 4 carbon atoms;R' is an alkyl group if k is 1, or an alkylene group if k is greater than 1; where R' has 2 to 18 carbon atoms;R" is independently lower alkylene of 2 to 4
5248821 Process for preparing polyoxyethylene amines with urea linkages September 28, 1993
High molecular weight active polyoxyalkylene reaction product formed in two steps and containing urea or urethane and urea linkages are disclosed which contain as the principle reaction component, a diamine having the formula: ##STR1## or a diol having the formula: ##STR2##
5247078 Synthesis of diaza crown ethers September 21, 1993
Poly(ethyleneoxy)amines, such as those having the structure:where a and d are independently 2 to 3; b and c are independently 1 to 4 and R is --OH or --NH.sub.2, may be reacted over a transition metal catalyst such as one containing nickel to produce diaza crown ethers, such as, for exam
5239048 Aromatic polyoxyalkylene amidoamines August 24, 1993
Block polyamido polyamine condensation products of an aromatic polycarboxylic acid component with a polyoxyalkylene polyamine component prepared by reacting the polycarboxylic acid component with an amount of the polyoxyalkylene polyamine component sufficient to react each carboxyl g
5239041 Hindered amines to slow down reactivity in producing rim elastomers August 24, 1993
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 an at least partially hindered
5210195 Bis(2,2',6,6'-tetramethyl-4-aminoethyleneamidopiperidyl) polyoxyalkylene May 11, 1993
Polyoxyalkylene diamines react with excess acrylate to form diesters which react with 2,2',6,6'-tetramethyl-4-aminopiperidines to give a product of formula 1, useful as photostabilizer for photosensitive materials. ##STR1##
5206362 Two-step method for preparing cyclic ureas April 27, 1993
Disclosed is a two-step method for the preparation of cyclic urea products which comprises: heating a diamine with urea in a mole ratio of about 1 at a temperature from about 120.degree. C. to 140.degree. C. until a mole of ammonia is liberated and slowly heating the intermediate with an
5191033 Epoxy resin composition containing aminated epoxy resin-alkylene oxide polyols March 2, 1993
The invention is an epoxy resin composition. Diol initiators are reacted with alkylene oxide and 1 to 5 wt % epoxy resin. The epoxy resin is added internally, along the length of the diol chain to yield a modified polyol of molecular weight 2000 to 5000. The modified polyol is subjected
5189118 Mixtures of 1-isopropyl-2-aryl imidazole and 1-isopropyl-2-aryl imidazoline as epoxy resin curat February 23, 1993
An epoxy resin curative composition that provides cured epoxy resins exhibiting improved properties is disclosed. The curative composition comprises a mixture of 1-isopropyl-2-aryl imidazole and 1-isopropyl-2-aryl imidazoline.
5183923 Process for preparing primary hydroxyl-containing diols February 2, 1993
The invention concerns a method for the preparation of polyurethane, polyester, polyamide, and polyurea diols which contain essentially all primary hydroxyl groups without capping by ethylene oxide. The method comprises coupling an alkylene oxide adduct of propylene glycol t-butyl et
5183514 Process for dissolving or removing rigid polyurethane foam by contacting with 1,2-dimethyl imida February 2, 1993
A process for the dissolution of polyurethane foams is disclosed. A polyurethane foam may be dissolved, or removed from a substrate, by contacting the polyurethane foam with 1,2-dialkyl imidazole, alone or as a co-solvent.
5182038 Mannich base phenol coupled mono and/or bis-succinimide lubricating oil additives January 26, 1993
A lubricating oil composition having improved dispersancy and a low nitrogen content. The dispersant additive contained in the oil composition being prepared by first forming mono- and/or bis-alkenyl succinimides, with, respectively, an amidoamine, and a phenol and an aldehyde. Then, the
5179175 Polyamides from polyetheramines, hexamethylene diamine and adipic acid January 12, 1993
Disclosed is a method for reducing compatibility problems when introducing a polyetheramine having a molecular weight of about 100 to 1000 into a nylon-6,6 polymer by prereacting the polyetheramine with two moles of adipic acid and reacting the adipic acid salt with nylon-6,6 and adipic
5160587 Extractive distillation of propylene oxide November 3, 1992
An extractive distillation agent consisting essentially of dipropylene glycol is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anh
5159101 Cyanoethylation of alcohols October 27, 1992
Disclosed is a process wherein cyanoethylation is accomplished by reacting a compound of the formula: ##STR1## where R=H or CH.sub.3, n=1 to 3 and m=0 to 50, and acrylonitrile over a heterogeneous catalyst comprising, potassium fluoride or cesium fluoride supported on an oxide of
5154804 Removal of water, acetone and methanol from propylene oxide by extractive distillation October 13, 1992
An extractive distillation agent consisting essentially of a monohydroxy alkoxyalkanol containing 5 to 8 carbon atoms is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting
5154803 Purification of contaminated propylene oxide by extractive distillation October 13, 1992
An extractive distillation agent consisting essentially of 2-methyl-2,4-pentanediol is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essential
5145561 Removal of water and methanol from propylene oxide by extractive distillation September 8, 1992
An extractive distillation agent consisting essentially of ethylene carbonate, propylene carbonate or a mixture thereof is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consistin
5140097 Thermoplastic thermosettable polyamide from poly(oxytetramethylene) diamine and poly(oxytetramet August 18, 1992
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 said poly(oxytetramethylene) di
5140090 Aliphatic polyureas from polyoxyalkylene polyamines, aliphatic diisocyanates and sym-dialkylethy August 18, 1992
Disclosed is a method for preparing aliphatic polyureas in varying reaction times which comprises reacting polyoxyalkylene polyamines, an aliphatic diisocyanate and a sym-dialkylethylenediamine.
5139706 Fatty amides prepared by reacting dicarboxylic acids, polyoxyalkylene amine bottoms products and August 18, 1992
Surfactant composition prepared by reacting dicarboxylic acids and esters thereof, such as adipic acid, diethyl oxalate, etc.; a polyoxyalkyleneamine residue, such as an alkylene glycol diamine bottoms product, and fatty acids and esters thereof, such as tallow acid or coconut acid,
5139622 Purification of propylene oxide by extractive distillation August 18, 1992
An extractive distillation agent consisting essentially of triethylene glycol is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anh
5138097 Amine terminated polyamides August 11, 1992
Liquid amine terminated polyamide addition products having an average molecular weight of about 3,000 to about 10,000 are prepared by the non-catalytic reaction of a dicarboxylic acid having a molecular weight within the range of about 130 to about 700 with a higher molecular weight
5138095 Bisulfite addition products of ketone-terminated polyoxyalkylene compounds August 11, 1992
Bisulfite addition products, which exhibit surface active properties, prepared by reacting a ketone-terminated polyoxyalkylene compound, such as a diketone of a polyoxypropylene glycol, a monoketone of a polyoxyalkylene alcohol, etc. with an ammonium or alkali metal bisulfite are disclos
5130382 Hydroxy terminated polyoxypropylene polyamides July 14, 1992
Hydroxy terminated polyamides are prepared having the formula: ##STR1## wherein R represents a defined hydrocarbon group,R' and R" represents defined oxypropylene groups, and R'" represents a defined oxyethylene group,the hydroxy terminated polyamide having been prepared by first prepari
5128441 Block polyamido condensation products July 7, 1992
A block polyamido primary amine condensation product prepared by reacting a defined polyoxyalkylene polyamine having terminal primary amine groups with an amount of a defined dicarboxylic acid or an anhydride or a C.sub.1 to C.sub.4 alkyl ester thereof, sufficient to react one mole of th
5120817 Epoxy resin compositions June 9, 1992
An epoxy resin composition comprises an vicinal polyepoxide and a Mannich condensation reaction product curing agent. The curing agent is the Mannich condensation reaction product of a phenol, formaldehyde and a polyoxyethylenediamine of the formula:and wherein: x ranges from 1 to 3. The
5118785 Preparation of polyether amide from tetraethylene glycol diamine and terephthalic acid June 2, 1992
Polyether amides may be produced by reacting aromatic dicarboxylic acids with tetraethylene glycol diamine. This is surprising since aromatic dicarboxylic acids, such as terephthalic acid cannot be readily reacted with triethylene glycol diamine. Suitable dicarboxylic acids include t
5116467 Water and acetone removal from propylene oxide by extractive distillation May 26, 1992
An extractive distillation agent consisting essentially of sulfolane is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide, and a h
5116466 Propylene oxide purification by extractive distillation May 26, 1992
An extractive distillation agent consisting essentially of 1-methyl-2-pyrrolidone is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially
5110991 Heterogeneous catalyst for alkoxylation of alcohols May 5, 1992
Disclosed is a novel method for alkoxylation alcohols by reacting the alcohols with epoxides over a heterogeneous catalyst comprising a fluoride of an element of Group I of the Periodic Table on an oxide of Group IIA or Group IIIA of the Periodic Table.
5109061 Surfactants containing a polyurethane or polyurea polymer April 28, 1992
Surfactant compositions comprising a water-soluble polyurethane or polyurea dispersed in a surfactant are described. These compositions are prepared by reacting an aromatic or aliphatic polyisocyanate with a polyol or polyamine in the presence of a surfactant. Solid products of this
5103056 Amidoamines derived from amines with aminopropyl and secondary amine termini April 7, 1992
Disclosed is a method for selective formation of amidoamines which comprises reacting a carboxylic acid group, such as, for example, a diacid or an aliphatic acid terminated amide with an aminopropylated disecondary amine which contains a secondary amine terminus in the same molecule at
5101060 Paired Mannich condensates of alkyl phenols March 31, 1992
Normally liquid final Mannich condensates prepared by reacting a para C.sub.1 -C.sub.15 alkyl phenol with formaldehyde and a first polyoxyalkylene diamine to form an intermediate Mannich condensate that is reacted with formaldehyde and a second polyoxyalkylene diamine to form a final
5098986 Paired alkyl phenol Mannich condensates March 24, 1992
Normally liquid polyfunctional final Mannich condensates that are useful as curing agents for epoxy resins are prepared by reacting a para C.sub.1 -C.sub.15 alkyl phenol with formaldehyde and a first polyoxyalkylene diamine to form an intermediate Mannich condensate that is reacted, in
5097070 High molecular weight trifunctional polyoxyethylene amines March 17, 1992
High molecular weight secondary amine terminated amides are disclosed which are prepared by a two-step process wherein a triamine and dibasic acid are reacted to form an acid terminated amide intermediate which is further reacted with a polyethylene glycol diamine or N,N'-diisopropyl der
5095116 Block amido-amine condensation products March 10, 1992
A block amido-amine condensation product having the formula: ##STR1## wherein R' represents hydrogen or methyl, andR" represents an organic group selected from the group consisting of polyoxyethylene groups, polyoxypropylene groups, polyoxyethylene/oxypropylene groups, and polyethyle
5093455 N,N-dialkylenediamines as curing agents for blocked isocyanate coatings March 3, 1992
Disclosed is a coating composition with improved stability which comprises an isocyanate which has been chemically blocked and a curing agent comprising an N,N'-dialkylalkylenediamine.
5093382 Preparation of foams using polyfunctional organic acids March 3, 1992
Foamed reaction products of organic polyisocyanates containing an average of at least 2 isocyanate groups per molecule with equivalent weights of carbon dioxide-generating, carboxyl group terminated addition reaction products of a polyoxyalkylene polyamine or polyoxyalkylene polyol react
5091574 Polyoxyethylene diamine derivatives of diglycidyl ethers February 25, 1992
Tetrafunctional amine derivatives of digyclidyl ethers of Bisphenol A that are liquid at ambient temperatures and that are useful as curing agents for epoxy resins are disclosed together with the method by which they are prepared which comprises the steps of:dissolving the diglycidyl eth
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