Polycarboxylic Acid Patents (Class 560/180)
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Patent number: 5468904Abstract: A fluorine-containing benzophenone derivative of the formula (1), (2) or (3):.PHI..sup.1 (--X.sup.1 --Q.sup.1 --R.sub.f.sup.1).sub.n (1).PHI..sup.2 --X.sup.2 --Q.sup.2 --R.sub.f.sup.2 --Q.sup.3 --X.sup.3 --.PHI..sup.3 (2).PHI..sup.4 --X.sup.4 --Q.sub.f --X.sup.5 --.PHI..sup.5 (3)wherein .PHI..sup.1 is a 2-hydroxybenzophenone structure of the formula ka-1: ##STR1## (wherein Y is a hydrogen atom or a hydroxyl group, each of k and m indicates the number of bond sites, k is an integer of from 0 to 3, and m is an integer of from 0 to 3, provided that 1.ltoreq.(k+m).ltoreq.4), n corresponds to (k+m) and is an integer of from 1 to 4, each of .PHI..sup.2, .PHI..sup.3, .PHI..sup.4 and .PHI..sup.5 is a 2-hydroxybenzophenone structure of the formula ka-1 wherein (k+m) is 1, each of X.sup.1, X.sup.2, X.sup.3, X.sup.4 and X.sup.5 is a single bond or an oxygen atom, Q.sup.1 is a single bond or a bivalent linking group having a carbon atom directly bonded to X.sup.1, each of Q.sup.2 and Q.sup.Type: GrantFiled: February 4, 1994Date of Patent: November 21, 1995Assignee: Asahi Glass Company Ltd.Inventors: Ryoko Osawa, Takashige Maekawa, Tatsuo Momii, Satoshi Kamata
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Patent number: 5453535Abstract: A process for the preparation of a .alpha.,.omega.-dicarboxylic acid diester of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 denotes hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.2 -C.sub.20 alkoxycarbonyl, nitro, C.sub.2 -C.sub.20 alkoxy and/or cyano andn is an integer from 1 to 12,wherein cycloalkanones of the general formula II ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and n have the aforementioned meanings, are caused to react with dimethylcarbonate in the presence of a nitrogenous base of the general formula III ##STR3## in which R.sup.6, R.sup.7, R.sup.8 denote hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.8 cycloalkyl or C.sub.7 -C.sub.20 aralkyl or R.sup.6 and R.sup.7 together form a C.sub.2 -C.sub.7 alkylene chain optionally mono- to penta-substituted by R.sup.1,at temperatures ranging from 50.degree. to 300.degree. C.Type: GrantFiled: June 27, 1994Date of Patent: September 26, 1995Assignee: BASF AktiengesellschaftInventor: Rolf Fischer
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Patent number: 5436361Abstract: A process for synthesizing enediynes is provided. Specifically, the formed enediynes contain a hex-3-ene-1,5-diynyl group. Production of the enediynes involves adding a base to a propargylic halide in the presence of a chelating agent, which causes a carbenoid coupling-elimination sequence of the propargylic halides. A carbenoid destabilizing agent can also be added to the reaction mixture in order to enhance yield. Acyclic and cyclic enediynes can be synthesized according to this process. The enediynes are useful compounds that can be used in a variety of applications including use in the production of anti-tumor agents.Type: GrantFiled: April 22, 1994Date of Patent: July 25, 1995Assignee: Clemson UniversityInventors: Graham B. Jones, Robert S. Huber
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Patent number: 5424474Abstract: The present invention relates to fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing hydroxyl and/or mercapto groups, their use as waterproofing and/or oil-repellency agents, and a method for their preparation.Type: GrantFiled: December 23, 1993Date of Patent: June 13, 1995Assignee: Bayer AGInventors: Klaus Pohmer, Rainer Weber, Hans-Dieter Block, Hans-Heinrich Moretto
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Patent number: 5414102Abstract: The present invention relates to fluorinated carboxylic acid esters of phosphonocarboxylic acids containing acrylate and/or methacrylate groups, their use as waterproofing or oil-repellency agents, and a method for their preparation.Type: GrantFiled: December 27, 1993Date of Patent: May 9, 1995Assignee: Bayer AktiengesellschaftInventors: Klaus Pohmer, Rainer Weber, Hans-Dieter Block, Hans-Heinrich Moretto
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Patent number: 5399718Abstract: A liquid phase process for making perfluorinated organic substances which comprises directly contacting in a temperature-controlled reactor a diluted solution or dispersion of a perfluorinateable, organic substance in a liquid, inert medium with a stoichiometric excess of fluorine gas, optionally diluted with an inert gas, to perfluorinate said organic substance at a temperature and a flow rate of inert gas (if used) sufficient to volatilize the resulting by-product hydrogen fluoride, removing said hydrogen fluoride from the reactor as it is produced, and separately removing from the reactor the resultant solution or dispersion of perfluorinated organic substance.Type: GrantFiled: February 1, 1994Date of Patent: March 21, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Michael G. Costello, George G. I. Moore
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Patent number: 5387665Abstract: A resin for electrophotographic toner comprising a degradable polyester resin which is an amorphous poly (.alpha.-hydroxycarboxylic acid) prepared by direct dehydration-polycondensation of an .alpha.-hydroxycarboxylic acid and having, preferably, a number-average molecular weight ranging from 2000 to 7000. A further resin for electrophotographic toner comprising a degradable polyester resin which may be prepared by reacting an amorphous or semicrystalline poly (.alpha.-hydroxycarboxylic acid), having a number-average molecular weight ranging from 1000 to 7000 or 2000 to 7000 and prepared by direct dehydration-polycondensation of an .alpha.-hydroxycarboxylic acid, with a polyol having at least three hydroxyl groups or a polycarboxylic acid having at least three carboxyl groups in the molecule and, in case of the reaction product with the polyol can further be reacted with a diisocyanate to give an urethane-modified polyester. These polyesters can likewise be used as resins for toner.Type: GrantFiled: February 25, 1994Date of Patent: February 7, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Akira Misawa, Masanobu Ajioka
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Patent number: 5386045Abstract: A process for producing alkoxylated mono-, di-, and tri-esters in which a starting material ester and an alkylene oxide are reacted in the presence of selected calcium based catalysts.Type: GrantFiled: August 5, 1992Date of Patent: January 31, 1995Assignee: Vista Chemical CompanyInventors: Upali Weerasooriya, Donald T. Robertson, John Lin, Bruce E. Leach, Cynthia L. Aeschbacher, Tonyette S. Sandoval
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Patent number: 5371272Abstract: A process for preparing functionalized perfluoropolyoxyalkylenes, wherein the corresponding perfluoropolyoxyalkylenes containing peroxy bonds in the chain are reacted with a primary or a secondary alcohol, or mixtures of these alcohols, in the presence of a catalyst selected from iodine, hydriodic acid or alkali metal iodides. The process leads to the obtainment of perfluoropolyoxyalkylenes having a high functionalization degree, which can be easily purified by removing the excess of alcohol through distillation.Type: GrantFiled: May 28, 1993Date of Patent: December 6, 1994Assignee: Ausimont S.p.A.Inventors: Giuseppe Marchionni, Ugo De Patto
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Patent number: 5360575Abstract: An optically active lactic acid derivative having the formula (1a): ##STR1## wherein A is O or S; B is --(CH.sub.2).sub.m -- or --(CH.sub.2).sub.n --O; R1 is an alkoxy group having 1-22 carbon atoms, a phenolate, a substituted phenolate, a hydroxy group, or a halogen atom; R2 is an alkyl group having 2-8 carbon atoms; m is 0, 1, 2, 3 or 4; n is 2, 3, 4 or 5; C* is an asymmetric carbon atom. Liquid crystal compositions and liquid crystal devices containing the above mentioned derivatives are also disclosed.Type: GrantFiled: November 8, 1991Date of Patent: November 1, 1994Assignee: Industrial Technology Research InstituteInventors: Wen-Liang Tsai, Hwei-Long Kuo
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Patent number: 5359128Abstract: The invention comprises compositions and methods for the treatment of psoriasis.Type: GrantFiled: February 11, 1993Date of Patent: October 25, 1994Inventor: Izhak Blank
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Patent number: 5350878Abstract: This invention provides 1) novel reactive fluorinated compounds derived from a specified class of telomers or cotelomers of fluoroolefins; and 2) stable products and stable polymers thereof obtained by reaction or polycondensation of the novel reactive fluorinated compounds with specified classes of hydrogenated aliphatic, alicyclic, aromatic reactive compounds, telechelic oligomers and block polymers wherein said stable products and polymers contain hetero atoms such as oxygen, sulfur or nitrogen and are characterized by high thermal and chemical resistance.Type: GrantFiled: February 10, 1993Date of Patent: September 27, 1994Assignee: Dow Corning CorporationInventor: Gerardo Caporiccio
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Patent number: 5319130Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.Type: GrantFiled: June 25, 1992Date of Patent: June 7, 1994Assignee: Elf Atochem North America, Inc.Inventor: Daryl L. Stein
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Patent number: 5312967Abstract: A single step process for converting aldaric acid salts to activated aldarates utilizing a lower alkanol as both solvent and esterifying agent is described. The activated aldarates are particularly useful as monomers for polymerizations with primary diamines in which the nitrogen atoms are bound to aliphatic carbon atoms to form poly(aldaramides).Type: GrantFiled: August 12, 1992Date of Patent: May 17, 1994Assignee: UAB Research FoundationInventors: Donald E. Kiely, Liang Chen, David W. Morton
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Patent number: 5294646Abstract: The invention relates to new N-alkyl-N-(meth)acryloyloxyalkylcarboxamides of aromatic carboxylic acids and aromatic carboxylic acid anhydrides, their preparation and formulations of these compounds for use as adhesives for the treatment of dental hard substance.Type: GrantFiled: June 25, 1992Date of Patent: March 15, 1994Assignee: Bayer AktiengesellschaftInventors: Michael Muller, Wolfgang Podszun, Werner Finger, Jens Winkel
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Patent number: 5286899Abstract: An efficient and commercially-viable method for the stereoselective transformation of a diol to an alcohol is disclosed. The present method is particularly well-suited for the preparation of the unnatural D-isomer of malic acid or its derivatives from the abundant naturally occurring L-tartaric acid or derivatives thereof.Type: GrantFiled: August 27, 1992Date of Patent: February 15, 1994Assignee: Sepracor, Inc.Inventor: Yun Gao
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Patent number: 5254718Abstract: This invention concerns esters of unsymmetrically 2-substituted glycolic acid dimers, a process for their preparation and their use in the preparation of unsymmetrically 3,6-substituted 1,4-dioxane-2,5-diones.Type: GrantFiled: February 27, 1991Date of Patent: October 19, 1993Assignee: E. I. Du Pont de Nemours & CompanyInventors: David L. Anton, Charles E. Nakamura
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Patent number: 5241081Abstract: The invention relates to new N-alkyl-N-(meth)acryloyloxyalkylcarboxamides of aromatic carboxylic acids and aromatic carboxylic acid anhydrides, their preparation and formulations of these compounds for use as adhesives for the treatment of dental hard substance.Type: GrantFiled: August 9, 1991Date of Patent: August 31, 1993Assignee: Bayer AktiengesellschaftInventors: Michael Muller, Wolfgang Podszun, Werner Finger, Jens Winkel
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Patent number: 5214197Abstract: A novel 2,4-dihydroxyadipic acid derivative of the formula: ##STR1## wherein R.sup.1 and R.sup.4 are the same or different and each a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or a silyl group, and R.sup.2 and R.sup.3 are the same or different and each a hydrogen atom or a protective group of a hydroxy group or together form a ring, which is useful as a common intermediate in the synthesis of HMG-CoA reductase inhibitor.Type: GrantFiled: July 2, 1991Date of Patent: May 25, 1993Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Shigeo Hayashi, Noboru Ueyama, Kenji Inoue, Teruyoshi Koga, Satomi Takahashi
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Patent number: 5210222Abstract: A process, which is harmless with respect to safety, for the production of malonic acid anhydride. For this purpose, diketene is ozonized in the presence of a suitable carbonyl compound. Malonic acid anhydride is a highly reactive intermediate product for the synthesis of numerous active ingredients for, e.g., pharmaceutical agents, pesticides or dyes.Type: GrantFiled: January 21, 1992Date of Patent: May 11, 1993Assignee: Lonza Ltd.Inventor: Colm O'Murchu
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Patent number: 5198569Abstract: The asymmetric hydrogenation of aliphatic .alpha.-keto esters in the presence of rhodium catalysts which contain as chiral ligand a diphosphine of formula IV(R.sub.3).sub.2 P--Q--P(R.sub.3)hd 2 (IV)wherein R.sub.3 is phenyl, C.sub.1 -C.sub.6 alkylphenyl or C.sub.1 -C.sub.6 alkoxyphenyl, and Q is [2,2,1]-bicyloheptan-1,2-ylene or [2,2,1]-bicyclohept-4,5-en-1,2-ylene, gives the corresponding (R)- or(S)-.alpha.-hydroxycarboxylic acid esters in high rates of chemical conversion and in high enantiomer excesses.Type: GrantFiled: September 11, 1991Date of Patent: March 30, 1993Assignee: Ciba-Geigy CorporationInventors: Hans-Ulrich Blaser, Ulrich Pittelkow, Felix Spindler
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Patent number: 5189200Abstract: An efficient and commerically-viable method for the stereoselective transformation of a diol to an alcohol is disclosed. The present method is particularly well-suited for the preparation of the unnatural D-isomer of malic acid or its derivatives from the abundant naturally occurring L-tartaric acid or derivatives thereof.Type: GrantFiled: December 21, 1990Date of Patent: February 23, 1993Assignee: Sepracor, Inc.Inventor: Yun Gao
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Patent number: 5157089Abstract: Citric ester compositions wherein the ester components contain about 1.5 to about 3 hydroxyl groups per molecule are useful as pigment grinding vehicles and as reactive diluents for thermosetting coatings.Type: GrantFiled: May 13, 1991Date of Patent: October 20, 1992Assignee: Hi-Tek Polymers, Inc.Inventors: Jimmy D. Elmore, Elizabeth G. Zylla, George A. Roy, II
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Patent number: 5132455Abstract: This invention relates to perfluoroether compounds, and to a general method for creating such compounds. It has been found that such compounds may be created by a three-step method which may be performed using a wide variety of ester starting materials. The first step of the three-step process comprises partial fluorination of a selected polyester compound. This may be performed by contacting the selected polyester with fluorine gas under predetermined conditions until a desired level of partial fluorination is achieved.The second step of this three-step process involves indirect fluorination to convert the partially fluorinated polyester into partially fluorinated polyether compounds. This step may be conducted by contacting the partially fluorinated polyester with SF.sub.4.The third step of the three-step synethetic process comprises direct fluorination of the partially fluorinated polyether compound at conditions which essentially complete the perfluorinated polyether compound.Type: GrantFiled: January 16, 1991Date of Patent: July 21, 1992Assignee: Exfluor Research CorporationInventor: Richard J. Lagow
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Patent number: 5099034Abstract: A compound of the formula (I): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are --COOR.sup.4, --COOR.sup.5, and --COOR.sup.6, respectively; R.sup.4, R.sup.5, and R.sup.6 each is hydrogen, lower alkyl, or alkali metal; W is hydroxyl; X, Y, and Z each is hydrogen or hydroxyl; a dotted line indicates the presence or absence of a single bond; or where W/R.sup.3, X/R.sup.1, and/or Z/R.sup.3 may be combined together, a lactone is formed, which compound is useful as a phospholipase A.sub.2 inhibitor. Process for the production of the compound (I) and a cell culture of a microorganism Circinotrichum falcatisporum RF-641 producing the same are also provided.Type: GrantFiled: June 27, 1990Date of Patent: March 24, 1992Assignee: Shionogi & Co., Ltd.Inventors: Tadashi Yoshida, Hiroshi Itazaki, Hitoshi Arita, Yoshimi Kawamura, Koichi Matsumoto
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Patent number: 5073299Abstract: Compounds having the formula I: ##STR1## wherein M.sub.1, M.sub.2, M.sub.3 , independently, are hydrogen, C.sub.1 -C.sub.4 alkkyl, phenyl, a monovalent or an equivalent of a polyvalent metal atom, ammonium or a substituted ammonium ion; R.sub.1 is C.sub.1 -C.sub.4 alkyl substituted by one or more hydroxy or carboxyl groups; and p is an integer.The new compounds are useful in the treatment of aqueous systems, in particular to inhibit scale deposition from aqueous systems.Type: GrantFiled: September 19, 1989Date of Patent: December 17, 1991Assignee: Ciba-Geigy CorporationInventor: Barry Cook
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Patent number: 5055613Abstract: The present invention relates to pentanedioic acid derivatives. The present invention further relates to pharmaceutical compositions containing such compounds and to the use of such compounds and compositions as hypolipidemic drugs.Type: GrantFiled: February 18, 1988Date of Patent: October 8, 1991Assignee: G. D. Searle & Co.Inventors: John S. Baran, Harman S. Lowrie
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Patent number: 5055609Abstract: Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction tests results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.Type: GrantFiled: April 6, 1990Date of Patent: October 8, 1991Assignee: Morflex, Inc.Inventors: Ezekiel H. Hull, Edward P. Frappier
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Patent number: 5051447Abstract: Oxime ethers of the general formula ##STR1## where R.sup.1 and R.sup.2 are hydrogen or alkyl,R.sup.3 is hydrogen, halogen, cyano, aryl or aryloxy, the aromatic ring being unsubstituted or substituted, or R.sup.3 is heteroaryl, adamantyl, fluorenyl or cycloalkyl or cycloalkenyl, these radicals being unsubstituted or substituted,X is saturated or unsaturated C.sub.1 -C.sub.12 -alkylene which is unsubstituted or substituted, andn is 0 or 1,and fungicides containing these compounds.Type: GrantFiled: July 20, 1989Date of Patent: September 24, 1991Assignee: BASF AktiengesellschaftInventors: Bernd Wenderoth, Franz Schuetz, Siegbert Brand, Hubert Sauter, Eberhard Ammermann, Gisela Lorezn
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Patent number: 5049699Abstract: Disclosed are 1- and 2-mono esters of citric acid and methods for preparing them in the pure form. These novel compounds are useful as surfactants.Type: GrantFiled: January 22, 1990Date of Patent: September 17, 1991Assignee: Haarmanns' Reimer CorpInventor: Michael P. Kotick
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Patent number: 5034559Abstract: Polyethercarboxylic esters of the formula ##STR1## where Alk is alkyl of 1 to 8 carbon atoms, R is hydrogen or methyl and n is from 3 to 70.Type: GrantFiled: July 2, 1990Date of Patent: July 23, 1991Assignee: BASF AktiengesellschaftInventor: Eckhard Hickmann
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Patent number: 5023362Abstract: Ketoester of the formula ##STR1## .alpha.-carboxylate-.omega.-acyl fluoride of the formula ##STR2## vinyl ether of the formula ##STR3## divinyl ether of the formula ##STR4## allyl ether of the formula ##STR5## and film-forming copolymers, useful as molding resins, of the vinyl ether and/or the divinyl ether or the allyl ether and a fluorinated vinyl monomer, for example, tetrafluoroethylene, wherein, in the above formulas, n is 0 to 6, p is 0 to 7, X is CO.sub.2 M, CO.sub.2 R, CO.sub.2 H, CONH.sub.2, COF, COCl or Cn, M is alkali metal, ammonium or quaternary ammonium and R is C.sub.1-8 alkyl, selected copolymers, after hydrolysis, being water-wettable and dyeable, exhibiting ion-exchange properties and being useful in curable fluoroelastomer compositions and, in film form, as the membrane in a chloroalkali electrolysis cell.Type: GrantFiled: June 19, 1987Date of Patent: June 11, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Carl G. Krespan
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Patent number: 5011629Abstract: The invention deals with the preparation, compositions, and application of certain high molecular weight polyesters of 12 hydroxystearic acid, which are useful in polycarbonate processing.Type: GrantFiled: April 17, 1989Date of Patent: April 30, 1991Inventor: Raymond E. Bilbo
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Patent number: 4992292Abstract: Trishydroxymethyl alkanes, notably monomeric and dimeric trishydroxymethyl ethane and propane, esterified with fatty acids or dicarboxylate-extended fatty acid derivatives, are physiologically compatible, partially digestible edible synthetic fat replacements for foods and pharmaceuticals.Type: GrantFiled: April 17, 1990Date of Patent: February 12, 1991Assignee: Nabisco Brands, Inc.Inventors: Lawrence P. Klemann, John W. Finley, Anthony Scimone
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Patent number: 4981987Abstract: An adhesion-improver which comprises a reaction product of an amino compound having a primary and/or secondary amino group in the molecule or a modified amino compound obtained by modifying the amino compound with a compound having an epoxy group, and a carbonyl compound, particularly a dicarbonyl compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are each an alkyl having 1 to 16 carbon atoms, an aryl having 6 to 12 carbon atoms or an alkoxy having 1 to 4 carbon atoms, R.sup.3 is a hydrocarbon group having one or more carbon atoms, and n is 0 or 1, which is useful for improving adhesion of curable compositions such as adhesives, sealing agents, paints and pourable compounds, and a curable composition comprising a conventional main component and the adhesion-improver as set forth above which has excellent adhesion and curing characteristics.Type: GrantFiled: March 5, 1986Date of Patent: January 1, 1991Assignee: Sunstar Giken Kabushiki KaishaInventors: Masaru Sugimori, Tadao Kunishige, Koichiro Sanji
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Patent number: 4966726Abstract: The new compounds produced from a molecular structural element with two chirality centers and at least one mesogenic structural element are defined by the general formula (I) ##STR1## in which the symbols have the following meaning: Y.sup.1 =H, (C.sub.1 -C.sub.10)alkyl, MC--CH.sub.2 or MC--CO, MC denoting the molecular radical of a mesogenic carboxylic acid after splitting off a COOH group,Y.sup.2 =(C.sub.1 -C.sub.10)alkyl, MC--CH.sub.2 or MC--CO, it being possible for Y.sup.1 and Y.sup.2 to jointly represent a MC--CH group, which is then part of a dioxolane ring,X=COOR.sup.1, CONH.sub.2, CONR.sup.2 R.sup.3 or C.tbd.N,R.sup.1 =(C.sub.1 -C.sub.10)alkyl or MC--CH.sub.2, andR.sup.2, R.sup.3 =H and (C.sub.1 -C.sub.4)alkyl or, independently of each other, (C.sub.1 -C.sub.4)alkyl.Said esters preferably find application as dopants in twistable liquid crystal phases in which they produce temperature compensation and twisting.Type: GrantFiled: July 18, 1988Date of Patent: October 30, 1990Assignee: Hoechst AktiengesellschaftInventors: Gunter Scherowsky, Manel Gunaratne
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Patent number: 4959156Abstract: A process for preparing water-scale inhibitors and, more specifically, a neat process for preparing acrylic acid/ethylene glycol graft co-polymers and a method for their use as scale inhibitors.Type: GrantFiled: April 10, 1989Date of Patent: September 25, 1990Assignee: Olin CorporationInventors: Donald L. Lickei, Michael L. Rosin, Ming Shen
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Patent number: 4954649Abstract: Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.Type: GrantFiled: June 21, 1989Date of Patent: September 4, 1990Assignee: Morflex Chemical Company, Inc.Inventors: Ezekiel H. Hull, Edward P. Frappier
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Patent number: 4948915Abstract: The reaction of a monohydroxyl or dihydroxyl alcohol with an alpha, beta-unsaturated ester in contact with a strongly basic anionic exchange resin in the hydroxyl or alkoxide form is unexpectedly and unpredictably enhanced by proper control of the water content in the reaction mixture and the temperature at which the reaction is carried out.Type: GrantFiled: July 22, 1986Date of Patent: August 14, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventor: Brian T. Keen
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Patent number: 4931583Abstract: Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.Type: GrantFiled: June 15, 1989Date of Patent: June 5, 1990Assignee: Morflex Chemical Compay, Inc.Inventors: Ezekiel H. Hull, Edward P. Frappier
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Patent number: 4927658Abstract: Trishydroxymethyl alkanes, notably monomeric and dimeric trishydroxymethyl ethane and propane, esterified with fatty acids or dicarboxylate-extended fatty acid derivatives, are physiologically compatible, partially digestible edible synthetic fat replacements for foods and pharmaceuticals.Type: GrantFiled: February 16, 1989Date of Patent: May 22, 1990Assignee: Nabisco Brands, Inc.Inventors: Lawrence P. Klemann, John W. Finley, Anthony Scimone
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Patent number: 4916252Abstract: A process for preparing an optically active alcohol is disclosed, which comprises asymmetrically hydrogenating a 1,3-diketone in the presence of a ruthenium-optically active phosphine complex as a catalyst. The resulting alcohol has high optical purity.Type: GrantFiled: June 16, 1988Date of Patent: April 10, 1990Assignee: Takasago International CorporationInventors: Noboru Sayo, Takao Saito, Hidenori Kumobayashi, Susumu Akutagawa, Ryoji Noyori, Hidemasa Takaya
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Patent number: 4898900Abstract: Novel derivatives of 3,3'-oxy-bis{[2,2'-di(bromomethyl)]propanoic acid}of formula (1) ##STR1## in which Y represents OR, chlorine or NH--R and wherein R represents hydrogen or an alkyl, aralkyl or aryl group, in which the alkyl, aryl and aralkyl groups are unsubstituted or substituted with 1 to 5 bromine atoms, are described.The novel derivatives of the invention have improved thermal properties and a high content of bromine, and are particularly suitable as flame-retardant agents. Methods of preparation of these novel compounds are described.Type: GrantFiled: December 27, 1988Date of Patent: February 6, 1990Assignee: Bromine Compounds Ltd.Inventor: Michael Peled
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Patent number: 4898970Abstract: This invention relates to a process for producing a fluorinated ester containing a trifluoromethyl group by esterification in the presence of .gamma.-butyrolactone as a solvent, and more particularly a process or producing a fluorinated ester containing a trifluoromethyl group which is useful as a raw material of various fluorine containing compound.Type: GrantFiled: February 1, 1983Date of Patent: February 6, 1990Assignees: Onoda Cement Co., Ltd., Tosoh CorporationInventors: Eiji Ogura, Kunihiro Mito, Shoji Arai
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Patent number: 4892967Abstract: Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.Type: GrantFiled: July 11, 1988Date of Patent: January 9, 1990Assignee: Morflex Chemical Company, Inc.Inventors: Ezekiel H. Hull, Edward P. Frappier
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Patent number: 4889650Abstract: A synthetic traction fluid comprising, as a base oil, at least one ester or its derivative selected from monoesters, diesters, triesters and derivatives thereof represented by the formula: ##STR1## where Y is independently selected from ##STR2## --(CH.sub.2)n--OH A' is an ester linkage, n is an integer of 1 to 3, and R.sub.Type: GrantFiled: May 28, 1987Date of Patent: December 26, 1989Assignee: Toa Nenryo Kogyo, K.K.Inventors: Narihiko Yoshimura, Hirotaka Tomizawa, Yasuji Komatsu
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Patent number: 4888195Abstract: Novel ether bridged polyester compositions are disclosed. Two multibasic acids, e.g., citric acid and isomers thereof, are joined by an ether-like linkage. (The citric acid molecule provides an hydroxyl which may be used in the ether linkage.) The carboxyls of the multibasic acid moieties of the new compounds may then have long chain fatty alcohols esterified thereto to provide the subject ether bridged polyesters. The superficial appearance of the polyester portions of the novel compounds is that of a triglyceride; however, upon close examination of the ester linkage, it is apparent that the novel compounds are reverse esters when compared to true triglycerides. It has been determined that a minimum of three reverse ester alkyl chains must be present on the molecule in order to consider it as a fat mimetic. The utility of the disclosed compositions is as a low to non-caloric fat substitute in food products. Additionally, the ether bridged polyesters may be used as lubricants for machinery.Type: GrantFiled: July 26, 1988Date of Patent: December 19, 1989Assignee: Nabisco Brands, Inc.Inventors: Stephen D. Huhn, Peter S. Given, Jr., Lawrence P. Klemann
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Patent number: 4883905Abstract: Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.Type: GrantFiled: September 17, 1987Date of Patent: November 28, 1989Assignee: Morflex Chemical Company, Inc.Inventors: Ezekiel H. Hull, Edward P. Frappier
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Patent number: 4870204Abstract: Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butylryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.Type: GrantFiled: September 17, 1987Date of Patent: September 26, 1989Assignee: Morflex Chemical Company, Inc.Inventors: Ezekiel H. Hull, Edward P. Frappier
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Patent number: 4870208Abstract: A process of preparing chiral alcohols by the asymmetric catalytic hydrogenolysis of epoxides using rhodium or ruthenium catalysts containing chiral phosphine ligands.Type: GrantFiled: June 3, 1988Date of Patent: September 26, 1989Assignee: Monsanto CompanyInventors: Albert S. C. Chan, James P. Coleman, Grace M. Wagner