Patents Examined by Natalie Trousof
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Patent number: 4670580Abstract: The invention provides a process for the preparation of a polyester oligomer capable of being further polymerized to a high polymer wherein a glycol-dicarboxylic acid ester feed is treated in a secondary esterification zone under conditions such that the partial vapor pressures of water and glycol are maintained at a cumulative level of less than 740 Torr, with water and glycol vapors being continuously removed from the secondary esterification zone, and free glycol being added to the secondary esterification zone in an amount sufficient to maintain a stable amount of liquid glycol in the secondary esterification zone.Type: GrantFiled: March 31, 1986Date of Patent: June 2, 1987Assignee: Celanese CorporationInventor: Charles J. Maurer
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Patent number: 4670587Abstract: This invention relates to a process for the purification of crude terephtic acid. The process includes heating the crude acid on a first plate and locating a second plate adjacent the first plate whereby vapors emanating from the crude acid form a sublimate on the second plate. The principal impurity removed is 4-carboxybenzaldehyde. The crude acid produced is applied to the first plate as a layer having a thickness of about 2 to about 5 mms thick and heated to a temperature of from about 180.degree. to about 220.degree. C. The upper plate is not heated except by the convective heat transfer and the heat of sublimation provided by the vapor moving from the crude acid layer to the second plate.Type: GrantFiled: February 3, 1986Date of Patent: June 2, 1987Assignee: Louisiana State University and Agricultural and Mechanical CollegeInventor: Michael Saska
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Patent number: 4668509Abstract: Polythioalkanecarboxylic products of formula: ##STR1## in which R.sub.1 =C.sub.6-30 aromatic or alkylaromatic radical; R.sub.2 =C.sub.4 -C.sub.18 alkyl; A=C.sub.1-3 alkylene; M=H, alkali metal or alkaline earth metal, an ammonium ion or a substituted ammonium ion; z=1-6; m=1-10; n=1-20; and u=zero or 1 are disclosed.A process of preparation comprising, in a first stage, reacting an alcohol or phenol of formula R.sub.1 (OH) .sub.z (II) with an epihalogenohydrin of formula ##STR2## in which X=Cl or Br, in the presence of a Lewis acid, to give the intermediates of the formula: ##STR3## and in a second stage, the two compounds of formulae R.sub.2 SH (V) and HS--A--COOH (VI), in which R.sub.2 and A have the meanings indicated above, are reacted simultaneously or successively with the compound of the formula (IV) is also disclosed.The compounds of the formula (I) are used in cosmetic compositions.Type: GrantFiled: August 2, 1984Date of Patent: May 26, 1987Assignee: L'OrealInventors: Guy Vanlerberghe, Henri Sebag
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Patent number: 4668832Abstract: Halogenated, unsaturated alcohols are dehydrated by contacting the alcohol and a carrier gas with a silica alumina catalyst to form dienes of the formula: ##STR1## wherein each X is independently hydrogen, fluorine chlorine, or bromine with the proviso that no more than one of them is hydrogen, and each R is independently hydrogen, alkyl, aralkyl, alkaryl, or aryl.Type: GrantFiled: October 8, 1985Date of Patent: May 26, 1987Assignee: The Dow Chemical CompanyInventor: William J. Kruper, Jr.
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Patent number: 4668428Abstract: Synthesis gas is produced by the partial oxidation of a feedstock comprising petroleum coke and/or heavy liquid hydrocarbonaceous fuel containing sulfur and having an ash that contains nickel, vanadium and a comparatively low level of silicon. An iron-containing additive is introduced into the reaction zone along with the feed. The additive combines with at least a portion of the nickel constituents and sulfur found in the feedstock to produce a liquid phase washing agent that collects and transports at least a portion of the vanadium-containing oxide laths and spinels and other ash components out of the reaction zone. In another embodiment, a minor amount of an additional material selected from the group of elements consisting of magnesium, chromium and mixtures thereof is included in the iron-containing additive. In still another embodiment, the iron-containing additive is uniformly dispersed in petroleum coke having a nickel and vanadium-containing ash.Type: GrantFiled: June 27, 1985Date of Patent: May 26, 1987Assignee: Texaco Inc.Inventor: Mitri S. Najjar
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Patent number: 4668818Abstract: In the process for the preparation of methyl methacrylate, the addition of aromatic diamine in an acidic environment reduces yellow color in the polymerized product.Type: GrantFiled: June 18, 1985Date of Patent: May 26, 1987Assignee: E. I. Du Pont de Nemours and CompanyInventors: Hayden I. Lipp, Richard H. Squire
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Patent number: 4668429Abstract: Synthesis gas is produced by the partial oxidation of a feedstock comprising petroleum coke and/or heavy liquid hydrocarbonaceous fuel containing sulfur and having an ash that contains nickel, vanadium and a comparatively high level of silicon. An iron and calcium-containing additive is introduced into the reaction zone along wth the feed. Separate portions of the additive (i) combine with a portion of the nickel, calcium and sulfur to generate a liquid phase washing agent that collects and transports out of the gas generator a portion of the vanadium-containing oxide laths and spinels and other ash components; and (ii) combine with a portion of the nickel, calcium and silicon to generate a liquid oxide-silicate phase that fluxes e.g. dissolves substantially all of the remaining portion of said vanadium-containing oxide laths and spinels and other ash components.Type: GrantFiled: June 27, 1985Date of Patent: May 26, 1987Assignee: Texaco Inc.Inventor: Mitri S. Najjar
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Patent number: 4668822Abstract: A method for preparing an important stereo-specific intermediate in the synthesis of prostaglandin analogs is disclosed. Said intermediate is (+)S-2-hydroxy-2-methyl-hexanoic acid and is prepared via an asymmetric halolactonization reaction utilizing L-proline as the chiral agent.Type: GrantFiled: August 11, 1986Date of Patent: May 26, 1987Assignee: Miles Laboratories, Inc.Inventor: Paul F. Corey
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Patent number: 4668817Abstract: Described are para-carboalkoxy cyclohexanones defined according to the structure: ##STR1## wherein R.sub.1 represents hydrogen or C.sub.1 -C.sub.7 alkyl and R.sub.2 represents methyl or ethyl and uses thereof in augmenting or enhancing the aroma of consumable materials including foodstuffs, chewing gums, toothpastes, medicinal products, chewing tobaccos, perfume compositions, colognes and perfumed articles (e.g., solid or liquid anionic, cationic, nonionic or zwitterionic detergents, cosmetic compositions, fabric softener compositions, fabric softener articles, hair preparations and perfumed polymers. The compounds defined according to the structure: ##STR2## wherein R.sub.1 ' represents C.sub.4 -C.sub.7 alkyl and R.sub.2 represents methyl or ethyl are novel compounds.Type: GrantFiled: March 21, 1986Date of Patent: May 26, 1987Assignee: International Flavors & Fragrances Inc.Inventors: Mark A. Sprecker, Wilhelmus J. Wiegers, Robert P. Belko, Richard M. Boden
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Patent number: 4668833Abstract: A process for hydrogenating acetylene in hydrogen chloride gas using the catalytic palladium supported on silicon carbide carrier whose iron content is specified to be not more than 1,000 ppm. The catalyst has the advantages of enhancing the conversion of acetylene into ethylene, improving the selectivity of ethylene, and retaining catalytic activity over a long time at a large space velocity. This process can be effectively applied to the hydrogenation of acetylene in hydrogen chloride gas separated from the thermally decomposed products of 1,2-dichloroethane which occurs in the production of vinyl chloride; namely, the hydrogen chloride gas that contains thus hydrogenated acetylene (ethylene) can be recycled in such an effective way that 1,2-dichloroethane can be produced economically.Type: GrantFiled: April 24, 1986Date of Patent: May 26, 1987Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Hiroshi Ohshima, Osamu Kakimoto
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Patent number: 4666835Abstract: 6.beta.-(L-.alpha.-Aminoadipoyl)-2.alpha.-vinyl-2.beta.-methylpenam-3-carbo xylic acid is provided in an enzymatic process converting .delta.-(L-.alpha.-aminoadipoyl)-L-cysteinyl-D-.gamma.,.delta.-didehydrois oleucine with isopenicillin N synthetase. The 2.alpha.-vinylpenam product is converted by known methods to the 6.beta.-amino-2.alpha.-vinyl-2.beta.-methylpenam-3-carboxylic acid nucleus and the latter is N-acylated to provide corresponding 6.beta.-acylaminopenams.Type: GrantFiled: April 29, 1986Date of Patent: May 19, 1987Inventor: Jack E. Baldwin
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Patent number: 4667055Abstract: Compounds having the formula: ##STR1## are antagonists of leukotrienes of C.sub.4, D.sub.4 E.sub.4 and the slow reacting substance of anaphylaxis.As such, these compounds will be useful as anti-asthmatic, anti-allergic, anti-inflammatory and cytoprotective agents.Type: GrantFiled: March 20, 1985Date of Patent: May 19, 1987Assignee: Merck Frosst Canada, Inc.Inventors: John Gillard, Joshua Rokach, Patrice C. Belanger
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Patent number: 4666510Abstract: The invention concerns novel compounds of the formula I ##STR1## wherein: X is selected from halogen, nitro, cyano, alkyl, substituted alkyl, hydroxy, alkoxy, substituted alkoxy, alkenyl, alkynyl, alkenyloxy, alkynyloxy, acyloxy, alkoxycarbonyl, alkylthio, alkylsulfinyl, alkylsulfonyl, sulfamoyl, substituted sulfamoyl, amino, substituted amino, and the groups formyl and alkanoyl and the oxime, imine and Schiff base derivatives thereof;R.sup.1 is selected from hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl, alkylsulfonyl, arylsulfonyl, acyl and an inorganic or organic cation;R.sup.2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl, alkynyl and haloalkynyl;R.sup.3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl, and phenyl;m is an integer chosen from 3 to 5.Type: GrantFiled: January 25, 1983Date of Patent: May 19, 1987Assignee: ICI Australia LimitedInventors: Keith G. Watson, Lynette A. Garson, Graham J. Bird, Lindsay E. Cross, Graeme J. Farquharson
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Patent number: 4667054Abstract: This invention relates to a process for producing optically active valine, characterized by optically resolving DL-valine hydrochloride in a solvent containing an amine salt, a sulfonic acid or a carboxylic acid and isolating optically active valine after the decomposition of the obtained optically active valine hydrochloride.Type: GrantFiled: January 30, 1986Date of Patent: May 19, 1987Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshinobu Miyazawa, Noriko Ooishi, Shigeru Aoki, Yasuhisa Tashiro
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Patent number: 4666941Abstract: New polysubstituted derivatives of naphtalene.These derivatives correspond to the following formula: ##STR1## in which: R.sub.1 to R.sub.4 is H or CH.sub.3R.sub.5 is ##STR2## or (iv) the radical: 2-oxazolinyl m is 0 or 1R.sub.8 is H, alkyl, OR.sub.11, R.sub.11 being H, alkyl or ##STR3## R.sub.13 being alkyl or aryl or R.sub.8 is ##STR4## when m=1, r' and r" representing H, alkyl mono or polyhydroxyalkyl, aryl or a heterocycle when they are taken together, R.sub.9 is H or alkyl, R.sub.10 is H, alkyl and the acetals of the said compounds, ##STR5## --OR.sub.14, R.sub.14 being H, alkyl, mono or polyhydroxyalkyl, aryl or aralkyl a rest of a sugar or represents ##STR6## P being 0, 1, 2, or 3 R.sub.6 represents a hydrogen atom or a lower alkyl radical,R.sub.7 represents H, alkyl, halogen, hydroxyl, sulfydryl, alkoxy, alkylthio, acyloxy, acylthio, acylamino or primary, secondary or tertiary amino and the salts of the said compounds.These compounds find an application in the cosmetic and pharmaceutical fields.Type: GrantFiled: November 28, 1984Date of Patent: May 19, 1987Assignee: Groupement Economique dit: Centre International de Recherces Dermatologiques C.I.R.D.Inventors: Braham Shroot, Jacques Eustache, Martine Bouclier
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Patent number: 4667053Abstract: This invention relates to the carbonylation of olefins. More particularly it involves the carbonylation of an .alpha.-olefins such as ethylene to form diesters, such as, for example, dimethyl succinate, 3-methoxypropionate and dimethylcarbonate by a process comprising reacting said olefin with carbon monoxide, oxygen and an alkanol in the presence of a heterogeneous palladium/copper catalyst, on a polymer support.Type: GrantFiled: June 30, 1986Date of Patent: May 19, 1987Assignee: Texaco Inc.Inventor: Jiang-Jen Lin
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Patent number: 4665215Abstract: A process is provided for the production of 4-acetoxybenzoic acid by subjecting phenyl acetate to a Fries rearrangement or phenol and an acetylating agent to a Friedel-Crafts acetylation to form 4-hydroxyacetophenone which is then acetylated with an acetylating agent such as acetic anhydride to form 4-acetoxyacetophenone. The 4-acetoxyacetophenone is then oxidized with oxygen in the presence of manganese cations and acetic acid as catalysts and a co-reductant or promoter to form 4-acetoxybenzoic acid. The acetylation of the 4-hydroxyacetophenone has the effect of "masking" the hydroxyl group of the latter compound in a manner necessary to effect the subsequent oxidation of the ketone group of the 4-acetoxyacetophenone.Type: GrantFiled: September 25, 1985Date of Patent: May 12, 1987Assignee: Celanese CorporationInventor: Kenneth G. Davenport
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Patent number: 4665085Abstract: Compounds having the formula (I) wherein R.sub.1 and R.sub.2 are a hydrogen atom, an alkyl group or a hydroxy group, or else R.sub.1 and R.sub.2 form together a bivalent ethylene or trimethylene radical; R.sub.3 is a halogen atom, an alkyl group, an alkoxy group, a mono- or polyhydroxylated alkyl group, an amino group, a mono- or di-alkyl amino group, an acetamido or sulfonamido group; R.sub.1 is a hydroxy group, a mono- or polyhydroxylated alkyl group, an amino group, a mono- or dialkyl amino group, an acetamido or sulfonamido group; R.sub.4 being in the position 3, 4 or 5 and A is a bridge having from 1 to 3 links selected among the groups having the formula (II), --NH--,--N.dbd.--O-- and --S--. R.sub.5 represents an hydrogen atom, an alkyl group, a hydroxy group or an alkoxy group as well as the addition salts thereof with pharmaceutically acceptable acids. Said compound may be used in therapeutical treatment as antihypertensive agents, particularly in the ocular field.Type: GrantFiled: March 12, 1985Date of Patent: May 12, 1987Assignee: Laboratoires Chauvin-BlacheInventors: Claude Coquelet, Elisabeth Battais, Claude Bonne, Daniel Sincholle
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Patent number: 4665218Abstract: Disclosed is a method for preparation of alkoxymethylene compounds, especially methoxymethylene compounds, from substituted or unsubstituted acetic acid alkyl esters, especially methyl esters, from the corresponding hydroxymethylene compounds or their alkali salts, by reaction with excess alkanol, especially methanol, in the presence of HCl and a water-binding agent. Preferred are water-binding agents which form stable reaction products with water.Type: GrantFiled: April 19, 1985Date of Patent: May 12, 1987Assignee: Dynamit Nobel AGInventors: Fritz Englaender, Wilhelm Vogt
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Patent number: 4665243Abstract: The energy requirements for preparing vinyl chloride monomer can be reduced by a process which includes the steps of purifying by distillation ethylene dichloride, compressing the ethylene dichloride vapor from the distillation column to a temperature and pressure sufficient for direct feed to a pyrolysis furnace. Up to 80% of the heat presently used after distillation and before pyrolysis can be saved.Type: GrantFiled: December 8, 1982Date of Patent: May 12, 1987Assignee: Stauffer Chemical CompanyInventor: William M. Burks, Jr.