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| Number | Title | Issue Date |
| 7393465 | Hydrophobic polyols of low viscosity A process for preparing hydrophobic polyols that includes reacting A) a mixture having an OH content of from 180 to 300 mg KOH/g, a viscosity at 23° C. of from 5000 to 20 000 mPas and an OH functionality of from 2.8 to 4.5 including from 5 to 20 wt. % of 3-pentadec... | 07/01/2008 |
| 7288683 | Method for making alkylated phenols An alkylation method comprises reacting a hydroxy aromatic compound with an alkyl alcohol in the presence of an alkylation catalyst comprising a metal oxide wherein the alkylation catalyst, has a surface area to volume ratio of about 950 to about 4,000 m2... | 10/30/2007 |
| 7244772 | Process for preparing polyurethane polyol and rigid foams therefrom We describe a process for the preparation of polyurethane polyol from CARDANOL 3-(8pentadecenyl)phenol, derived from cashew nut shell liquid (CNSL), a renewable resource material. The polyol is made by oxidation with peroxy acid generated in situ to give epoxidised ... | 07/17/2007 |
| 7232788 | Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount... | 06/19/2007 |
| 6989467 | Microwave induced process for the preparation of substituted 4-vinylphenols The present invention relates to “a microwave induced process for the preparation of 4-vinylphenols or its derivatives” in which commercially important FEMA GRAS approved perfumery and flavouring vinylphenols (i.e. hydroxystyrenes) namely 4-vinylguaiacol (FEMA G... | 01/24/2006 |
| 6939996 | Process for the hydrogenation of alkylaryl ketones The present invention pertains to a process for the hydrogenation of alkylaryl ketones, which process involves contacting a feed containing the alkylaryl ketones and from 0.5% to 30% by weight of phenolic compounds with hydrogen in the presence of a heterogeneous hy... | 09/06/2005 |
| 6541674 | Process for the condensation of a carbonyl compound with an aromatic derivative in a basic medium A process for condensing at least one carbonyl compound carrying at least one electron-withdrawing group with an aromatic derivative carrying at least one hydroxyl functional group, wherein the electron-withdrawing group present on the carbonyl compound i... | 04/01/2003 |
| 6504065 | Method of making metal salts of 2,4,6-tri-t-butylphenol Reaction of a phenol with a metal salt of an alcohol produces a metal phenolate salt of a phenol. When a hindered phenol is used a hindered metal phenolate is produced. Such hindered metal phenolate salts are useful in driving the synthesis reaction of hi... | 01/07/2003 |
| 6476277 | Process for preparing hydroxyaromatics The present invention relates to a process for preparing hydroxyaromatics by oxidizing aromatics with dinitrogen monoxide in the gas phase in the presence of nanocrystalline zeolites.... | 11/05/2002 |
| 6333441 | Preparation of cis--olefins A cis-olefin of the formula: R1 --CH.dbd.CH--R2 is prepared by reducing an alkyne of the formula: R1 --C.ident.C--R2 with formic acid in the presence of a palladium catalyst. R1 and R2 are ... | 12/25/2001 |
| 6242609 | Method for manufacturing a color coupler used in a silver halide photographic light-sensitive material A method for manufacturing a color coupler used in a silver halide photographic light-sensitive material using an ammonium trihalide. Said method for manufacturing the color coupler comprising the following step: a step for halogenating a coupling position of ... | 06/05/2001 |
| 6191317 | Process for preparation of polyalkyl hydroxyaromatics Polyalkyl hydroxyaromatics may be prepared from polyalkylenes and hydroxyaromatics in the presence of an acid catalyst and an organic solvent having a boiling point range with an initial boiling point value of below or about the boiling point of the selec... | 02/20/2001 |
| 6147123 | Treatment and prevention of hepatic disorders New methods are described for the treatment of viral hepatitis C involving the administration of vitamin E and other compounds with antioxidant properties. Treatment with high doses of vitamin E is effective in treating chronic hepatitis C in patients ref... | 11/14/2000 |
| 5886240 | Process for preparing aromatic acetylenes using palladacycles as catalysts The invention relates to a process for preparing aromatic acetylenes of the formula (I): Ar--C.tbd.C--R8a, where Ar is: ##STR1## by reacting haloaromatics or aryl sulfonates of the formula (II): Ar--X, with monosubstituted acetylenes of th... | 03/23/1999 |
| 5877381 | Particulate catalyst for use in a fluidized bed The present invention provides a fluidized bed catalyst for the synthetic reaction of organic compounds which has a reduced catalyst loss. A fluidized bed catalyst for organic compound synthetic reaction, characterized in that 90% or more of the catalyst ... | 03/02/1999 |
| 5811599 | Process for the selective oxidation of hydrocarbons and their derivatives A process for the oxidation of hydrocarbons and their derivatives having the general formula RX, wherein R is from n-alkyl, iso-alkyl, benzyl, cyclohexyl, mono, di or tricyclic aryl, or alkenic groups and X is selected from H, OH or Cl to compounds having... | 09/22/1998 |
| 5633411 | Method for production of allyloxystyrene compounds Allylic styrene ether compounds of the formula: ##STR1## where R1 is an optionally substituted allylic or propargyl hydrocarbon group, and R2, R3, and R4 are independently H, C1-6 hydrocarbon or ... | 05/27/1997 |
| 5493062 | Process for preparing 4-hydroxystyrene The present invention provides a unique and novel way of producing vinyl phenols such as p-vinyl phenol (4-hydroxystyrene--HSM). In this new process, p--aminoethylphenol (AEP) is heated under suitable deamination conditions of temperature and press... | 02/20/1996 |
| 5475156 | Method for making a 2,6-dialkylphenol A method is provided for converting a 2,4,6-trialkylphenol, such as mesitol, to a dialkylphenol, for example 2,6-dimethylphenol, by effecting the selective oxidation of the 2,4,6-trialkylphenol, followed by the deformylation of the resulting 3, 5-dialkyl-... | 12/12/1995 |
| 5463141 | Process for preparing poly(4-hydroxystyrene) The present invention provides a unique and novel way of producing vinyl phenols such as poly(4-hydroxystyrene) (PHS). In this new process, p--aminoethylphenol (AEP) is heated under suitable conditions of temperature and pressure and for a sufficie... | 10/31/1995 |
| 5420363 | Optically active phenol derivatives and preparation thereof An optically active tri-substituted methane compound having, as substituents, an aromatic ring group and a phenyl group having hydroxyl group at ortho or para position can be obtained by allowing a phenol compound unsubstituted at the ortho- or/and para-p... | 05/30/1995 |
| 5414156 | Process for producing ortho-isopropylated phenol derivatives This invention relates to the process for producing ortho-isopropylated phenol derivatives having following general formula (VIII). ##STR1## (in the above formula, R1 is a hydrogen or a low alkyl group of C1 -C4) A pr... | 05/09/1995 |
| 5399786 | Preparation process of tert-butylphenols The present invention has as purpose a process for the manufacture of tert-butylphenols, mainly of tertbutyl-4-phenols from a phenol and an alkyltert-butylether. The improvement consists in separating in at least two steps, the reaction of phenol alkylati... | 03/21/1995 |
| 5393776 | Tocotrienol analogs in the treatment of hypercholesterolemia and hyperlipidemia This invention relates to structurally novel acyclic tocotrienol analogs, which are useful for cholesterol/lipid lowering in cases of hypercholesterolemia and hyperlipidemia, and for atherosclerosis. Also provided are pharmaceutical compositions and a met... | 02/28/1995 |
| 5356976 | 2,4-dialkyl-6-sec- alkylphenols Compounds of formula I ##STR1## wherein R1 is C1 -C4 n-alkyl, isopropyl, s-butyl, cyclopentyl, cyclohexyl or -methylbenzyl, R2 is C4 -C18 tert-alkyl or ,-dimethylb... | 10/18/1994 |
| 5345002 | Ethylene alpha-olefin copolymer substituted hydroxy aromatic compounds The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived ... | 09/06/1994 |
| 5344997 | Alkylation of aromatics using a fluorided silica-alumina catalyst A fluorided silica-alumina catalyst, particularly one with a silica:alumina ratio in the range of 1:1-9:1 containing from 1 to 6 weight percent fluoride, is particularly effective in the liquid phase alkylation of benzene by linear olefins to produce line... | 09/06/1994 |
| 5334775 | Polymer Alkylation of hydroxyaromatic compounds A process for alkylating hydroxyaromatic compounds with a terminally unsaturated polymer in the presence of a partially or completely dehydrated heteropoly catalyst. The alkylated hydroxyaromatic compounds so formed are useful as precursors for the produc... | 08/02/1994 |
| 5304690 | Process for the preparation of salts of 4-hydroxystyrene 4-Acetoxystyrene is reacted with a base in a solvent to form a salt of 4-hydroxystyrene via saponification. Alternatively, 4-hydroxystyrene is reacted with a base to form a salt of 4-hydroxystyrene. In the latter case, the 4-hydroxystyrene is prepared by ... | 04/19/1994 |
| 5302732 | Use of ultra-low sodium silica-aluminas in the alkylation of aromatics Silica-aluminas having a sodium content less than about 0.1 weight percent show increased stability when used as a catalyst for the alkylation of aromatic compounds. Where such silica-aluminas are used as the catalyst in detergent alkylation their increas... | 04/12/1994 |
| 5245086 | Hydroxylation of phenols/phenol ethers The phenols/phenol ethers are hydroxylated by reaction with hydrogen peroxide, in the presence of a catalytically effective amount of (a) at least one alkali metal or alkaline earth metal salt of a protonic acid having a pKa in water of less than -0.1 and... | 09/14/1993 |
| 5243116 | Alkylation of aromatic compounds Alkylated benzenes such as ethylbenzene and cumene are produced by alkylation and/or transalkylation in the presence of an acidic mordenite zeolite catalyst having a silica/alumina molar ratio of at least 30:1 and a crystalline structure which is determin... | 09/07/1993 |
| 5241098 | Method for preparing a salt of 4-hydroxystyrene and for preparing 4-tertiary-butoxycarbonyloxystyrene therefrom The present invention pertains to a method of forming a salt of 4-hydroxystyrene by reacting 4-acetoxystyrene with a suitable base in a suitable solvent system. Subsequently, or simultaneously, the salt of 4-hydroxystyrene can be reacted, preferably in si... | 08/31/1993 |
| 5209873 | Electrically conductive paste and coating An electrically conductive paste composition comprises an electrically conductive powder, a solvent and an organic binder comprising one or more monohydric phenol adduct compound selected from the group consisting of: (a) a monohydric phenol adduct of an unsat... | 05/11/1993 |
| 5118875 | Method of preparing alkyl phenol-formaldehyde condensates Additives of improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the alkylation of a phenol in the presence of a polar aprotic cosolvent to produce an essentially linear alkylated phenol ... | 06/02/1992 |
| 5098945 | 2,4-dimethyl-6-s-alkylphenols A composition containing a) a polystyrene, substituted polystyrene, copolymer or terpolymer of styrene or of a substituted styrene, polycarbonate, polyester-carbonate, polyurethane, polyamide copolyamide, polyacetyl or polyphenylene oxide and b) at least ... | 03/24/1992 |
| 5093514 | Base-catalyzed dehydration of substituted cis-1,2-dihydroxycyclohexa-3,5-dienes A process for dehydrating compounds of the formula ##STR1## where --R is --CH.dbd.CH2, --C.tbd.CH --C.tbd.N or ##STR2## in an aqueous solution thereof is disclosed. In the case where R is --CH.dbd.CH2 or --C.dbd.CH, the tem... | 03/03/1992 |
| 5087772 | Method for preparing 4-hydroxystyrene A method for preparing 4-hydroxystyrene is disclosed. The method comprises reacting 4-acetoxystyrene with a suitable alcohol in the presence of a catalytic amount of a suitable base.... | 02/11/1992 |
| 5068368 | Stabilized lithium acetylide and reactions therewith A process for the preparation of ethynyl carbinols of the formula: ##STR1## wherein R" is hydrogen, a substituted or unsubstituted aliphatic or aromatic hydrocarbon, R'" is a substituted or unsubstituted aliphatic or aromatic hydrocarbon or R" and R'... | 11/26/1991 |
| 5053558 | Process for the isomerization of cresols An improved process is disclosed for the isomerization of a non-equilibrium mixture of cresols to achieve a high yield of one or more cresol isomers using a catalyst comprising a Group VIII metal, a modifier, a pentasil zeolite, and an inorganic oxide bin... | 10/01/1991 |
