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The Dow Chemical Co. Patents
Assignee:
The Dow Chemical Co.
Address:
Midland, MI
No. of patents:
99
Patents:


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Patent Number Title Of Patent Date Issued
RE31430 Catalysts for the hydration of nitriles to amides October 25, 1983
Copper, copper oxide, copper-chromium oxide, copper-molybdenum oxide or mixtures thereof have been found to be excellent heterogeneous catalysts for the conversion of nitriles in the presence of water to the corresponding amides. Using one such catalyst in a continuous flow reactor,
RE31356 Hydration of nitriles to amides using cupreous catalysts August 23, 1983
.[.Aliphatic nitriles.]. .Iadd.Olefinic nitriles of three to six carbon atoms .Iaddend.are converted to the corresponding amides by contacting the nitrile in the presence of water with a cupreous catalyst containing copper prepared by reducing copper hydroxide or a copper salt.
RE30796 Scale removal, ferrous metal passivation and compositions therefor November 17, 1981
.Iadd.Removing iron oxide scale or a mixture of iron oxide scale and hardness scale from a metal surface by contacting said scale with an aqueous solution containing at least one of an ammonium, amine, or hydroxyalkylamine salt of nitrilotriacetic acid, N-2, -hydroxyethylaminodiaceti
6220743 Processes and materials selection knowledge-based system April 24, 2001
A computer implemented knowledge-based system for the selection of materials and/or fabrication processes for a durable goods application. The system consists of a graphical user interface, an expert system shell and a models and data base program. The system provides rapid, consistent
6086864 Pharmaceutical formulations comprising polythiourea and methods of use thereof July 11, 2000
The oligomers of the present invention are polythioureas having 3 to 50 recurring units derived from aromatic diamines substituted with anionic groups, and having a number average molecular weight of less than 10,000. These oligomers are water-soluble, preferably have a rigid backbone, a
6013251 Narrow poly-and-mono-dispersed anionic oligomers, and their uses, formulations and processes January 11, 2000
The narrow poly- or mono-dispersed oligomers of the present invention are polyureas, polycarbonates, polyesters or polyamides having a recurring unit of from 3 to 50. These oligomers are water-soluble, preferably have a rigid backbone, have recurring units coupled by carbonyl linking moi
5986044 Narrow poly- and mono-dispersed anionic oligomers November 16, 1999
The narrow poly- or mono-dispersed oligomers of the present invention are polyureas, polycarbonates, polyesters or polyamides having a recurring unit of from 3 to 50. These oligomers are water-soluble, preferably have a rigid backbone, have recurring units coupled by carbonyl linking moi
5728874 Anti-HIV achiral polyurea oligomers, a process for creating them, formulations using them, and t March 17, 1998
The present invention relates to achiral polyurea oligomers, their uses and formulations as anti-HIV pharmaceuticals and to a process for the preparation of narrow mono- and polydispersed oligomers as an emodiment of the invention. The achiral oligomers are derived from repeating units o
5728731 Anti-herpes virus and cytomegalovirus polyamide oligomers March 17, 1998
The oligomers of the present invention are polyamides having a number average molecular weight of <10,000. These oligomers are water-soluble, have a rigid backbone with a predictable anion spacing, and are pharmaceutically-acceptable. The oligomers are useful for the treatment and
5606108 Process for preparing anionic polycarbonate and polyester oligomers having useful antiviral prop February 25, 1997
The preferred oligomers of the present invention are polyureas having a number average molecular weight of <10,000. These oligomers are water-soluble, have a rigid backbone, have recurring units coupled by carbonyl linking moieties which have anionic groups, display predominantly
5581468 System and method for modeling plastic molding and molding parts incorporating the same December 3, 1996
A system and method for simulating LCM mold filling utilizes at least one processor, suitable RAM and storage memory, input means, display means, and logic for simulating the injection of resin into a mold cavity containing a preform based upon mold cavity design parameters, mold fil
5547992 Anti-herpes virus and cytomegalovirus polycarbonate oligomers August 20, 1996
The oligomers of the present invention are polyureas, polycarbonates, polyesters or polyamides having a number average molecular weight of <10,000. These oligomers are water-soluble, have a rigid backbone with a predictable anion spacing, and are pharmaceutically-acceptable. The o
5512177 Narrow poly- and mono-dispersed anoinic oligomers, and their uses, formulations and process April 30, 1996
The narrow poly- or mono-dispersed oligomers of the present invention are polyureas, polycarbonates, polyesters or polyamides having a recurring unit of from 3 to 50. These oligomers are water-soluble, preferably have a rigid backbone, have recurring units coupled by carbonyl linking moi
5266660 Curable compositions containing mesogenic epoxy compounds and cured products thereof November 30, 1993
Compositions comprising epoxy resins containing one or more rodlike mesogenic moieties per molecule are cured with curing agents which will normally cure epoxy resins. These curable compositions can be oriented by the application of an electric field, magnetic field drawing and/or shear
5046538 Mixing valve nozzle September 10, 1991
A mixing valve nozzle for homogeneously mixing two fluid streams and dispensing a predetermined quantity of fluid into a container, the mixing valve having a housing with a centrally disposed valve stem, an inlet port, an outlet port and a second inlet port disposed therebetween, the
4656071 Ceramic bodies having a plurality of stress zones April 7, 1987
Ceramic bodies having a balanced overall stress pattern in which are present individual stress zones of compressive and tensile stresses and the techniques for forming said bodies are disclosed. The bodies are formed by having slightly different compositional patterns from one zone t
4618630 Organic polymer composition containing an antistatic agent comprising a nonvolatile ionizable me October 21, 1986
An antistatic additive for polymers, particularly polyurethanes is disclosed comprising an ionizable metal salt and an enhancer comprising a non-ionizable salt or ester of an organic acid.
4443625 Product for treating soil to suppress the nitrification of ammonium nitrogen therein April 17, 1984
The present invention relates to crop culture and is particularly concerned with practices for conserving soil nitrogen and for supplying the soil nitrogen requirements for plant nutrition. These practices involve the employment, as active agent, of a novel butane compound having the for
4435459 Carpet backed with fire suppressant polyurethane composition March 6, 1984
A fire suppressant composition is provided for particular use in polyurethane backed carpets for airplanes which suppressant comprises a combination of (1) an organic filler composition comprising (a) a hydrated alumina compound, (b) a hydrated zinc borate, (c) an inorganic lead-cont
4433148 Heterocyclic substituted triazol-3-ol compounds February 21, 1984
Compounds are prepared which correspond to the formula ##STR1## wherein R represents a nitrogen containing heterocyclic radical corresponding to one of the formulae ##STR2## each X independently represents chloro, fluoro, bromo, nitro, alkyl of 1 to 4 carbon atoms, amino, mon
4432408 Method and compressed vermicular expanded graphite apparatus for heat exchanging February 21, 1984
Method of and apparatus for exchanging heat between two fluids wherein a core member is composed essentially of vermicular expanded graphite which has been compressed primarily along one axis and heat is exchanged in the core member between the two fluids along an axis normal to the prim
4430311 Alumina compounds in ion exchange resins February 7, 1984
Formation of hydrous alumina in the reticules of a weak-base anion exchange resin, wherein AlCl.sub.3 has been precipitated as hydrous alumina by reaction with ammonia, is improved by employing a subsequent treatment with HCl or with NH.sub.4 Cl and HCl to convert the exchange resin to t
4430097 Lithium aluminates for separating hydrocarbons February 7, 1984
Particles of crystalline LiX.multidot.2Al(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in separating hydrocarbons according to boiling point ranges.
4429125 Phosphorus esters of 5-pyrimidinols January 31, 1984
Compounds of the formula: ##STR1## wherein R is hydrogen; alkyl of 1 to 8 carbons; alkylthiomethyl, alkylsulfinylmethyl or alkylsulfonylmethyl wherein alkyl contains 1 to 4 carbons; phenyl; phenylthio; alkylthio, alkylsulfinyl or alkylsulfonyl wherein alkyl contains 1 to 4 carbon
4428805 Electrodes for oxygen manufacture January 31, 1984
Electroconductive substrates for use as oxygen electrodes are coated with an optional interface layer and then with cobalt oxide spinels conforming substantially to the empirical formulawhere M represents at least one metal from the Groups IB, IIA, IIB, where Z represents at least one me
4427813 Polycarbonate containing a bis(cyclic phosphate) as a thermal stabilizer January 24, 1984
A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of an aromatic bis(cyclic phosphate) such as 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxy-2,1-ethanediyloxy)]bis(5,5- dimethyl-2,2'-dioxo-1,3,2-dioxaphosphorinane) exhibits improved thermal stability.
4423206 Vicinal alkylene oxide polymerization December 27, 1983
A polymerization process for vicinal alkylene oxides and a catalyst for said polymerization process where the catalyst comprises a composition prepared by contacting an alkyl aluminum compound with an organic nitrogen base compound selected from secondary nitrogen-containing compounds ha
4419299 Phosphonopolyester oligomers December 6, 1983
Phosphonopolyester oligomers are prepared from hydroxyalkylated 2,2',-bis(3-allylphenyl-4-hydroxy) alkanes and phosphonyl dihalides. The oligomers are useful in the preparation of polyester resins, epoxy resins, and polyurethanes.
4417969 Sulfonic acid electrolytic cell membranes November 29, 1983
An improved polymer for use as an ion exchange membrane in an electrolytic cell wherein the polymer has pendant chains containing sulfonic acid ion exchange groups and has an equivalent weight of between about 800 and about 1500. The polymers have a hydration product of less than about
4416937 Polymer blends and laminates and adhesive films prepared therefrom November 22, 1983
Polymer blends are provided which are characterized by good processability on conventional extrusion equipment to provide films having excellent adhesion to various substrates while still exhibiting good non-blocking properties during film manufacture, storage, shipment and use. Such ble
4415707 Processing modifier for polyolefins November 15, 1983
The use of polyvinyloctadecyl ethers as a processing modifier in the extrusion of polyolefin resins leads to a smoother surface of the extruded resin. Other beneficial effects include improved values of such important resin characteristics as tensile strength at break, percentage elongat
4415502 Polycarbonate type nonionic surfactants November 15, 1983
Polycarbonate type nonionic surfactant compositions comprising monohydroxy alcohols capped with polycarbonate groups. More specifically, the surfactant compositions comprise aliphatic, nonaromatic cycloaliphatic or aromatic alcohols which have been capped with block polycarbonate groups
4415463 Preparation of viscosifiers for zinc salt workover and completion brines November 15, 1983
Viscosifiers for addition to high zinc salt brines, used as oil well workover and completion fluids, are prepared from natural polysaccharide gums by treatment with a basic nitrogen reagent, such as a quaternary ammonium compound, hexamethylene tetramine, or dimethylol urea. The trea
4410596 Process for preparing epoxy resins having improved physical properties when cured October 18, 1983
Epoxy resins having improved properties are prepared by reacting an epoxy resin with a dihydric phenol in the presence of a sufficient quantity of a phosphonium catalyst such that the product resulting from reacting a mixture of the catalyst, epoxy resin and dihydric phenol has a % epoxi
4409227 4-(((Heterocyclo)thio)methyl)benzoic acids, esters and amides and their pharmaceutical use October 11, 1983
4-(((Heterocyclo)thio)methyl)benzoic acids, esters, amides and pharmaceutically-acceptable salts thereof having hypoglycemic activity in mammals, including a method of use and pharmaceutically-acceptable compositions.
4406805 Hydrated MgCl.sub.2 reversible phase change compositions September 27, 1983
A reversible liquid/solid phase change composition comprising hydrated MgCl.sub.2 and one or more of Ba(OH).sub.2, Sr(OH).sub.2, CaO, SrCO.sub.3, BaO, Ca(OH).sub.2, Mg(OH).sub.2, MgO, Na.sub.3 AlF.sub.6 or CaC.sub.2 O.sub.4, added to the composition in an effective amount to suppress
4402846 Hydrated Mg(NO.sub.3).sub.2 /MgCl.sub.2 reversible phase change compositions September 6, 1983
A reversible liquid/solid phase change composition comprising hydrated Mg(NO.sub.3).sub.2 /MgCl.sub.2, and one or more of Sr(OH).sub.2, Ca(OH).sub.2, CaO or BaO, added to the composition in an effective amount to suppress supercooling of the Mg(NO.sub.3).sub.2 /MgCl.sub.2 liquid phas
4401435 Oxidizing medium for dyes August 30, 1983
An acidic, aqueous oxidant including ionized bromate, iodate and a soluble vanadium-containing material.
4400516 Heterocyclic substituted triazole-3-ol compounds August 23, 1983
Compounds are prepared which correspond to the formula ##STR1## wherein R represents a nitrogen containing heterocyclic radical corresponding to one of the formulae ##STR2## each X independently represents chloro, fluoro, bromo, nitro, alkyl of 1 to 4 carbon atoms, amino, mon
4398002 Epoxy resins from hydroxy benzamides August 9, 1983
New epoxy resins are prepared by reacting a hydroxybenzamide or derivative thereof with an epihalo-hydrin followed by dehydrohalogenation. These epoxy resins have crystalline melting points, self-cure at elevated temperatures and cure rapidly in the presence of the usual epoxy resin
4395574 Phosphonium phenoxide catalysts for promoting reaction of epoxides with phenols and/or carboxyli July 26, 1983
Certain tetrahydrocarbyl phosphonium phenoxide salts are described herein which are novel compounds and/or novel catalysts for promoting the reaction between vicinal epoxides and phenols and/or carboxylic acids or anhydrides. These catalysts are particularly useful in preparing high
4395533 Polyurethanes prepared from hydroxy benzamides or polyols prepared from hydroxy benzamides and p July 26, 1983
New epoxy resins are prepared by reacting a hydroxybenzamide or derivative thereof with an epihalohydrin followed by dehydrohalogenation. These epoxy resins have crystalline melting points, self-cure at elevated temperatures and cure rapidly in the presence of the usual epoxy resin curin
4395510 Novel olefin polymer compositions and foamed articles prepared therefrom having improved elevate July 26, 1983
Elevated temperature distortion characteristics of freshly prepared olefin polymer foams are substantially improved by employing in the preparation thereof a small amount (e.g., from about 0.15 to about 10 weight percent based on the olefin polymer) of certain selected N-substituted fatt
4392980 Transition metal aluminates July 12, 1983
Crystalline transition metal aluminates conforming generally to the formulawhere M is a transition metal having a valence charge of +2 selected from the group consisting of Cu, Zn, Mn, Fe, Co, and Ni, where AZ represents negative valence ions or radicals, v is a negative valence of 1, 2, or
4392961 Magnesium aluminate anion exchangers July 12, 1983
Preparations and uses are shown for novel crystalline aluminates which conform generally to the empirical formulawhereinA and Z represent negative-valence ions or radicals selected from the group comprising hydroxyl, halide, inorganic acid, and organic acid,n is a value of from about 1 to ab
4389512 Cycloaliphatic acrylate compositions June 21, 1983
Cycloalphatic acrylate compositions and methods of making them are disclosed. The compositions are mixtures containing dicyclopentadiene (meth) acrylate and (meth) acrylates such as the mono and di (meth) acrylates of tri, and tetracyclopentadiene and a mixture of the copolymers of (
4387182 Cycloaliphatic acrylate compositions June 7, 1983
Cycloalphatic acrylate compositions and methods of making them are disclosed. The compositions are mixtures containing dicyclopentadiene (meth) acrylate and (meth) acrylates such as the mono and di (meth) acrylates of tri, and tetracyclopentadiene and a mixture of the copolymers of (
4387169 Low density, extruded ethylenic polymer foams June 7, 1983
Disclosed are low density foam planks of ethylenic polymers, which planks have a density of from about 0.8 to about 1.6 pounds per cubic foot, dimensional stability, substantially closed-cell structure, a cross-sectional area of at least six square inches and a minimum cross-sectiona
4384887 Process of making salt-coated magnesium granules May 24, 1983
Small rotund magnesium (or Mg alloy) granules dispersed in a friable salt matrix are obtained by preparing a molten salt mixture containing molten magnesium (or Mg alloy), stirring to effect good dispersion, and cooling the molten mixture to effect freezing of the magnesium (or Mg alloy)
4382872 Metallurgical extractant system May 10, 1983
An extractant system comprising (a) a high molecular weight alkylaromatic sulfonic acid and (b) a chelating amine having a pKa of from about 3 to about 9 in a solvent which is essentially immiscible with water, said system being useful for the selective extraction of desired metals, e.g.
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