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| Number | Title | Issue Date |
| 5750775 | Sodium orthohydroxymandelate/phenol/water complex, preparation process and use for isolation of sodium orthohydroxymandelate A crystallized sodium orthohydroxymandelate-phenol-water complex, its preparation process in which phenol (P2) is introduced into an aqueous solution S at a pH comprised between 7 and 9.5 in order to obtain the expected product which is crystal... | 05/12/1998 |
| 5616733 | Preparation method for 2-coumaranone Preparation process for 2-coumaranone in which glyoxylic acid, in vapor phase, is reacted with cyclohexanone, in the presence of a dehydrogenation catalyst.... | 04/01/1997 |
| 5600001 | Acetaldehyde derivatives, their preparation process and their use Azines of formula (I): ##STR1## in which R and R' either are identical and represent an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical containing 3 to 5 carbon atoms, or together form a radical of formula (II): --CHR1 -... | 02/04/1997 |
| 5567762 | Acrylate-styrene resins cross-linked by a blocked polyisocyanate preparation and uses as paint and/or lacquer Resins based on a copolymerizate reacted with by a polyisocyanate, partially and transitorily blocked in the form of urea by an amino derivative, in which i) the polymerizate is based on styrene, at least two acrylic monomers of formula (I), H2... | 10/22/1996 |
| 5550250 | Preparation process for 2 formyl imidazole acetals Preparation process for a product of formula (I): ##STR1## in which R1 and R2, either are identical and represent a C1 -C4 alkyl radical, or form together a group of formula (II): --CHR3 .paren open-s... | 08/27/1996 |
| 5536481 | Use of cyclic aminals of glyoxylic acid for trapping hydrogen sulphide Use of a product of formula (I): ##STR1## in which M represents a hydrogen, lithium, sodium or potassium atom, or an NH4 group and n represents 2 or 3, as an agent for trapping hydrogen sulphide, its use for the preparation of a compositio... | 07/16/1996 |
| 5527964 | Acetaldehyde derivatives, their preparation process and their use Azines of formula (I): ##STR1## in which R and R' either are identical and represent an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical containing 3 to 5 carbon atoms, or together form a radical of formula (II): --CHR1 -... | 06/18/1996 |
| 5489705 | Sodium salt of 1-menthyloxycarbonyl 1-hydroxy methanesulphonic acid, its preparation process and its use for obtaining L(-)menthyl glyoxylate Sodium salt of 1-menthyloxycarbonyl 1-hydroxy methanesulphonic acid, its preparation process and its use for obtaining L(-)menthyl glyoxylate. Product of formula (I). ##STR1## preparation process and use of the product of formula (I) according to cla... | 02/06/1996 |
| 5484843 | Thickening water-in-oil dispersions, their preparation process and their use in textile printing Self-reversible, stable, water-in-oil dispersions, miscible with water, constituted by an oil phase, an aqueous phase and at least two emulsifying agents of which at least one is of water-in-oil type, and at least one is of oil-in-water type, which contai... | 01/16/1996 |
| 5480456 | Silica sols for obtaining a hide which is called a stabilized pickled or white or stabilized white Use of an aqueous silica sol for obtaining a stabilized pickled white or a stabilized white from a hide, in particular by treatment of a hide at a pH between 1 and 8, at ambient temperature, in an aqueous or brine bath with a density between 1.014 and 1.0... | 01/02/1996 |
| 5442094 | Sodium salt of 1-menthyloxycarbonyl 1-hydroxy methanesulphonic acid, its preparation process and its use for obtaining L(-)menthyl glyoxylate Product of formula (I) ##STR1## preparation process and use of the product of formula (I) according to claim 1 for obtaining the product of formula (II).... | 08/15/1995 |
| 5429811 | Process for the thermochemical decomposition of dinitrogen oxide Process for the thermochemical decomposition of dinitrogen oxide to products of general formula (I) NOx (I) x representing 1 or 2, wherein dinitrogen oxide is flame-treated, then the products of gene... | 07/04/1995 |
| 5426239 | Continuous process for the industrial manufacture of dimethoxyethanal Process for the continuous preparation of dimethoxy ethanal (DME) in which a 70% by weight of an aqueous solution of glyoxal is continuously reacted with 8 to 12 moles of methanol/mole of glyoxal in the presence of a cation exchange resin, then the reacti... | 06/20/1995 |
| 5417845 | Use of decahydro pyrazino [2,3-b] pyrazine for the reduction of the proportion of free or combined hydrogen sulphide present in a fluid Process and use of decahydro pyrazino [2,3-b] pyrazine for the reduction of the proportion of free or combined hydrogen sulphide present in a fluid.... | 05/23/1995 |
| 5395964 | Preparation process for hydroxyphenylacetic acids Preparation process for a hydroxyphenylacetic acid of formula (I): ##STR1## where R.dbd.H, alkyl or alkoxyl as well as its salts, in which the corresponding free or salified hydroxymandelic acid of formula (II): ##STR2## in which R has the meani... | 03/07/1995 |
| 5395440 | Compositions for the treatment of paper and/or cardboard surfaces and their use in the paper industry Compositions intended for the treatment of paper and cardboard surfaces characterized in that they have a pH of less than 6 and contain between 30 and 50% by weight of a mixture constituted by glyoxal (G), urea (U), an alkali metal salt of an oxygenated b... | 03/07/1995 |
| 5385680 | Finishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishes Process for finishing a textile in which the textile to be treated is impregnated using a finishing bath containing phosphinicosuccinic acid (I), phosphinicobissuccinic acid (II) or a mixture of phosphinicosuccinic acid (I) and phosphinico-bissuccinic aci... | 01/31/1995 |
| 5382667 | Substituted succinimides as corrosion inhibitors Substituted succinimides of formula (I) ##STR1## in which R represents an alkyl radical containing 5 to 15 carbon atoms and R1 represents an oxo-2 morpholino radical or a (carboxymethyl)(hydroxy-2 ethyl) amino radical and their salts, and ... | 01/17/1995 |
| 5360881 | Method of cross-linking ethylene monomers using diallyloxyacetic acid and its basic addition salts as cross-linking agents Diallyloxyacetic acid and its basic addition salts, their preparation process and their application as cross-linking agents. Diallyloxyacetic acid and its basic addition salts, preparation process and application as cross-linking agents.... | 11/01/1994 |
| 5358535 | Use of polyalkyleneglycol diesters as formaldehyde collectors and finishing process for the textile industry Use as formaldehyde collectors of the products of formula ##STR1## in which R represents an acetoacetyl or 3,5-dioxo hexanoyl group, R1 represents a hydrogen atom or a methyl radical, m is equal to 1, 2, 3 or 4 and n is either equal to 1 w... | 10/25/1994 |
| 5354897 | Process for obtaining orthohydroxymandelic acid and its salts Preparation process for orthohydroxymandelic acid, as well as its salts, in which glyoxylic acid is reacted with phenol in the presence of a tertiary amine and catalytic quantities of trivalent metal cations, in order to obtain the expected product which ... | 10/11/1994 |
| 5340441 | Cationic copolymers which are insoluble in water, new dispersions and their use in the coatings of papers Cationic copolymers which are insoluble in water based on acrylamide, and a cationic monomer of general formula (I) ##STR1## in which R and R1, identical or different, represent a hydrogen atom or a methyl group, X represents an oxygen ato... | 08/23/1994 |
| 5332829 | Process for reducing 5-(2-thenylidene) hydantoin to 5-(2-thenyl) hydantoin Preparation process for 5-(2-thenyl) hydantoin in which 5-(2-thenylidene) hydantoin is reacted in acetic acid with a phosphorous compound selected from the group consisting of red phosphorus and phosphonic acid, in the presence of a catalytic amount of an... | 07/26/1994 |
| 5326378 | Tris (2-acetoacetoxy ethyl)-amine, and its hydrosoluble salts, preparation process, use as formaldehyde collectors and finishing process for fabrics Tris(2-acetoacetoxy ethyl)-amine, and its hydrosoluble mineral or organic acid salts, preparation process, use as formaldehyde collectors, and finishing process for fabrics based on cellulose fibres.... | 07/05/1994 |
| 5306833 | Preparation process for arylacetic acids and their alkali metal salts Process for obtaining an arylacetic acid of general formula (I): Ar--CHR--COOH (I) in which R=H, C1 -C4 alk, Ar=2-thienyl, 3-thienyl, 1-naphthyl, 2-naphthyl, 1-(2-methoxy naphthyl), 3,4-methylenedio... | 04/26/1994 |
| 5300240 | Finishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishes Process for finishing a textile in which the textile to be treated is impregnated using a finishing bath containing phosphinicosuccinic acid (I), phosphinicobissuccinic acid (II) or a mixture of phosphinicosuccinic acid (I) and phosphinico-bissuccinic aci... | 04/05/1994 |
| 5292958 | Process for eliminating the diethanolamine present in triethanolamine and preparation process for purified triethanolamine Processes for eliminating the diethanolamine present in triethanolamine and the preparation of triethanolamine or compositions containing triethanolamine substantially free from diethanolamine in which the triethanolamine containing diethanolamine is trea... | 03/08/1994 |
| 5284635 | Process for the elimination of hydrogen sulfide by using water-in-oil emulsions A process for the removal of hydrogen sulfide present in a composition comprising treating the composition with a water-in-oil emulsion wherein said water-in-oil emulsion containing by weight about: 20 to 80% of a dispersed aqueous phase containing about ... | 02/08/1994 |
| 5273549 | Alkanepolycarboxylic acid derivatives as cross-linking agents of cellulose, new derivatives and textile finishes Use as cellulose cross-linking agents of derivatives of alkanepolycarboxylic acids corresponding to general formula I: ##STR1## in which: n, m=0 or 1, R1, R3, R5 and R7 =H or COOH it being understood that a... | 12/28/1993 |
| 5266162 | Process for coating papers and its use in flexographic printing Process for coating papers and other articles in which the said papers and other articles are treated at pH 4 to 5 with a cross-linked anionic polymer, insoluble in water, and use for obtaining papers or other similar articles intended to be flexographica... | 11/30/1993 |
| 5262238 | Cationic copolymers which are insoluble in water, new dispensions and their use in the coating of papers Cationic copolymers which are insoluble in water based on acrylamide, and a cationic monomer of general formula (I) ##STR1## in which R and R1, identical or different, represent a hydrogen atom or a methyl group, X represents an oxygen ato... | 11/16/1993 |
| 5258448 | Absorbent polymers, manufacturing process and their use in particular for sanitary articles Hydrophobic, cross-linked absorbent polymers, insoluble in water, in the form of microbeads , based on silica and acrylic acid partially salified by an alkali metal, are obtained by a polymerization process in a water-in-oil suspension in which an aqueous... | 11/02/1993 |
| 5256725 | Polymerizable luminescent fluid composition and its use Polymerizable luminescent fluid composition, characterized by the fact that it contains by weight (a) 30 to 45% of one or more luminescent mineral pigments, (b) 10 to 30% of silica particles, having a diameter comprised between 7 and 1000 nm, not linked t... | 10/26/1993 |
| 5229168 | Process for coating papers and its use in flexographic printing Process for coating papers and other articles in which the said papers and other articles are treated at pH 4 to 5 with a cross-linked anionic polymer, insoluble in water, and use for obtaining papers or other similar articles intended to be flexographica... | 07/20/1993 |
| 5225041 | Refining process for paper pulp using a silica sol A refining process for paper pulp in which colloidal silica sol is mixed with the paper pulp to be refined. The addition of the colloidal silica sol reduces the time necessary to refine the pulp to a predetermined freeness value compared to refining in th... | 07/06/1993 |
| 5223621 | Transvinylation of carboxylic acids Transvinylation process between vinyl acetate or vinyl propionate and a carboxylic acid of general formula (I), RCOOH (I) in which R represents a substituted or non-substituted alkyl, cycloalkyl, aralkyl or ... | 06/29/1993 |
| 5223175 | Water-in-oil emulsions and their use in the elimination of hydrogen sulphide Water-in-oil emulsions containing by weight about:20 to 80% of a dispersed aqueous phase containing about 20 to 70% of one or more aldehydes chosen from the group constituted by formaldehyde, glyoxal, glutaraldehyde, glycolaldehyde or glyoxylic acid and 8... | 06/29/1993 |
| 5219619 | Coating process for papers and cardboards and its use for obtaining paper which has a good smoothness Coating process for papers and cardboards, in which cross-linked polymers insoluble in water, containing in molar proportions in the polymerized state: 50 to 99.995% acrylic acid at least 70% of which is in the form of ammonium acrylate, 0.005 to 0.5% bis... | 06/15/1993 |
| 5200541 | Non-centrosymmetric organometallic molecules, process of preparation and application in nonlinear optics and intermediates The products having general formula (I) ##STR1## in which R represents a C1 -C18 alkoxyl, C1 -C18 alkylthio, C1 -C18 monoalkylamino or C2 -C36 dialkylamino group,... | 04/06/1993 |
| 5171884 | Preparation process for glyoxylic acid by catalytic oxidation of glyoxal in an aqueous medium in the presence of catalytic quantities of platinum Preparation process for glyoxylic acid in which glyoxal is subjected to a heterogeneous catalytic oxidation in an aqueous medium by oxygen in the presence of catalytic quantities of platinum.... | 12/15/1992 |
