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Rhone-Poulenc Chimie De Base Patents
Assignee:
Rhone-Poulenc Chimie De Base
Address:
Courbevoie, FR
No. of patents:
50
Patents:












Patent Number Title Of Patent Date Issued
5518706 Basic aluminum chlorosulfate flocculant May 21, 1996
A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula:and characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
5089554 Silica reinforced elastomers February 18, 1992
Mechanically improved elastomeric shaped articles include reinforcing amounts of a particulate silica filler material, said silica filler material comprising at least one precipitated silica having (i) a CTAB surface area of from 20 to 200 m.sup.2 /g, (ii) a mean projected area of ag
5076940 Basic aluminum chlorosulfate flocculating process December 31, 1991
A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formulaand characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
5041642 Preparation of .beta., .gamma.-unsaturated carboxylic acids August 20, 1991
.beta.,.gamma.-Unsaturated carboxylic acids are facilely prepared by carbonylating a conjugated diene with carbon monoxide in the presence of (i) water, (ii) a halogenated hydracid, (iii) a palladium catalyst comprising palladium metal or supported palladium metal, a palladium oxide,
5023127 Microporous composites and electrolytic applications thereof June 11, 1991
Microporous composites adopted for electrolytic applications, e.g., as cathodes in the electrolysis of sodium chloride, are comprised of a regular, homogeneous and consolidated microporous deposit of monodispersed carbon fibers on a perforated rigid support substrate therefor, said c
4983762 Preparation of biureto polyisocyanates January 8, 1991
Clear, precipitate-free, storage-stable biureto polyisocyanates, well adopted for paint applications, are prepared by reacting at least one aliphatic, alicyclic or arylaliphatic monomeric diisocyanate with water, at a temperature of at least 70.degree. C. and under an absolute pressure
4981673 Basic aluminum chlorosulfate flocculant January 1, 1991
A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula:and characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
4939028 Microporous composites and electrolytic applications thereof July 3, 1990
Microporous composites adopted for electrolytic applications, e.g., as cathodes in the electrolysis of sodium chloride, are comprised of a regular, homogeneous and consolidated microporous deposit of monodispersed carbon fibers on a perforated rigid support substrate therefor, said c
4931012 Phase contactor/process for generating high temperature gaseous phase June 5, 1990
A phase contactor adopted, e.g., for combustion and pollution control, comprises a mixing zone and means for separately injecting and disintegrating at least two gaseous flowstreams therein, a central element within said mixing zone defining an annular space into which said gaseous f
4910008 Gas-gas phase contactor March 20, 1990
A gas-gas phase contactor/process, especially adopted for high temperature reactions, e.g., for the production of hydrochloric acid, comprises means for separately establishing at least two disparate gaseous feedstreams, means for disintegrating each such feedstream into a registered plu
4889957 Dinuclear and water-soluble rhodium complexes and hydroformylation catalysis therewith December 26, 1989
Novel dinuclear and water-soluble rhodium complexes, well suited as hydroformylation catalysts, as are aqueous solutions thereof, have the general formula: ##STR1## in which R and R', which are identical or different, are each a substituted or unsubstituted hydrocarbon radical, w
4883612 Preparation of para-acyloxybenzene sulfonates November 28, 1989
p-Acyloxybenzene sulfonates, well suited for detergency applications, are facilely and rapidly prepared by acylating an alkali or alkaline earth metal, or ammonium p-phenol sulfonate, with an anhydride of a straight or branched chain carboxylic acid having from 7 to 12 carbon atoms, in a
4832822 Steam cracking of hydrocarbons May 23, 1989
The steam and thermal cracking of hydrocarbons is facilely carried out by in situ generating a stream of hot combustion gases including steam, advantageously in the configuration of a downstream axially extending, axially symmetrical helical flowstream, by combustion of steam-producing
4778905 Dinuclear and water-soluble rhodium complexes and hydroformylation catalysis therewith October 18, 1988
Novel dinuclear and water-soluble rhodium complexes, well suited as hydroformylation catalysts, as are aqueous solutions thereof, have the general formula: ##STR1## in which R and R', which are identical or different, are each a substituted or unsubstituted hydrocarbon radical, w
4775551 Microporous shaped articles October 4, 1988
Controlledly microporous shaped articles adopted for use, e.g., as electrodes and diaphragms, are produced by consolidating a fibrous matrix with a latex binder material, notably by deposition onto a rigid perforate substrate, the lattice network of said binder material comprising a
4769226 Purification of wet-process phosphoric acid September 6, 1988
Crude wet-process phosphoric acid is purified by treating a dilute such acid with a molybdenum value reducing amount of hydrogen sulfide or of a sulfide which in situ forms hydrogen sulfide, to afford a purified acid adopted for the production of food grade phosphoric acid, and which has
4767570 Sodium tripolyphosphate carrier particles containing a sodium hydrogen ortho on pyro-phosphate August 30, 1988
Novel carriers for liquid component antifoaming agents, e.g., polysiloxane based, and well adapted for detergency applications, are comprised of a preferably hydrated sodium tripolyphosphate fraction, and a fraction comprised of sodium hydrogen pyrophosphate, sodium hydrogen orthopho
4766230 Preparation of arylaminoaluminums August 23, 1988
The arylaminoaluminums, well adopted as catalysts for the ortho-alkylation of aromatic amines with an olefin, are facilely prepared by reacting at least one aromatic amine with metallic aluminum in the presence of a catalytically effective amount of iodine, or precursor compound thereof
4758249 Hydrogen reduction of carbonaceous source to form carbon monoxide July 19, 1988
Carbon dioxide is facilely converted into carbon monoxide and water, and advantageously into a syngas, by establishing a thermally homogeneous gaseous admixture including carbon dioxide and hydrogen having a temperature of at least 800.degree. C., within a period of time essentially
4734214 Process for the preparation of high absorptive sodium tripolyphosphate hexahydrate March 29, 1988
Solid, free-flowing, essentially nonfriable powdery detergent particulates of recrystallized sodium tripolyphosphate hexahydrate having high absorption capacity and a pore volume of at least 0.70 cm.sup.3 /g, at lest 80% of the intercrystalline porosity thereof comprising pore sizes
4726931 Apparatus for withdrawing liquid samples February 23, 1988
Apparatus for withdrawing liquid samples from liquid/solids media, e.g., phosphoric acid slurries, for the downstream analysis thereof, is comprised of (i) means adapted for insertion into a liquid/solids medium to selectively separate and receive a liquid fraction therefrom, (ii) a
4724095 Anti-redeposition detergent composition February 9, 1988
A detergent composition adopted for the washing of a fibrous textile substrate, notably a textile substrate comprising fibers of a synthetic organic polymer, includes an anti-redepositon effective amount of at least one hydrophilic/hydrophobic anti-redeposition copolymer which comprises
4701492 Sulfurized tepa/amido compounds as interface agents for vulcanizable elastomeric matrices October 20, 1987
Elastomer/filler interface agents for filled vulcanizable matrices, e.g., natural or synthetic rubber, comprise the amido reaction products of tetraethylene pentamine ("TEPA") with amide-forming organosulfur compounds.
4692264 Stable, pumpable aqueous zeolite suspensions September 8, 1987
Aqueous zeolite suspensions, e.g., of type A and especially detergent type 4A, are stabilized and maintained pumpable by adding thereto an effective stabilizing amount of at least one alkaline earth metal cation, advantageously magnesium.
4671948 Anhydrous sodium tripolyphosphate June 9, 1987
A novel anhydrous sodium tripolyphosphate, well adapted for detergency applications, has an X-ray diffraction pattern essentially characterizing a phase I sodium tripolyphosphate; a viscosity, in aqueous medium, characterizing a phase II sodium tripolyphosphate; a rate of hydration c
4668418 Photoactivable bleaching/detergent composition May 26, 1987
Detergent compositions adopted for bleaching via photoactivation, e.g., by irradiation with visible light, are comprised of (i) at least one sensitizing agent of xanthene dyestuff type, e.g., a fluorescein, and (ii) at least one cyclic tertiary mono-, di- or tetramine, e.g., DABCO.
4664838 Rapidly hexahydrated sodium tripolyphosphate detergent compositions May 12, 1987
Na tripolyphosphate compositions very rapidly hexahydrated, e.g., in water, and well suited for detergency applications, are comprised of a mass of sodium tripolyphosphate particulates prehydrated with a plurality of hexahydrated sodium tripolyphosphate crystals homogeneously distributed
4661334 Preparation of zeolites 4A and/or 13X April 28, 1987
Zeolites well suited for detergency, e.g., zeolites of type A, are adopted for mass production by simultaneously continuously introducing both an aqueous solution of sodium silicate and an aqueous solution of sodium aluminate into an unagitated first reaction zone to effect the continuou
4636369 Essentially complete recovery of uranium, yttrium, thorium and rare earth values from phosphate January 13, 1987
The uranium, yttrium, thorium and rare earth values contained in a phosphate rock are essentially totally recovered therefrom by, during the wet-process preparation of phosphoric acid from said phosphate rock, acidulating same in the presence of aluminum and/or iron, and optionally s
4619791 Carbonylation of methyl acetate to acetic anhydride October 28, 1986
Methyl acetate is carbonylated to acetic anhydride with carbon monoxide, in liquid phase, in an anhydrous reaction medium, in the presence of a catalytically effective amount of (i) nickel, (ii) methyl iodide, (iii) an alkali metal iodide, and (iv) a crown ether.
4588532 Preparation of para-acyloxybenzene sulfonates May 13, 1986
p-Acyloxybenzene sulfonates, well suited for detergency applications, are facilely and rapidly prepared by acylating an alkali or alkaline earth metal, or ammonium p-phenol sulfonate, with an anhydride of a straight or branched chain carboxylic acid having from 7 to 12 carbon atoms, in a
4568461 Apparatus for distributing a substance over a surface February 4, 1986
An apparatus for distributing a substance over a surface includes a feed compartment which is provided with substance feed means and which is defined by a bottom, a rear wall, two side walls and a front wall forming an overflow. A distribution compartment has a rear wall defined by the
4562778 High temperature reaction apparatus January 7, 1986
A high temperature reactor includes a reaction chamber which is symmetrical about a longitudinal axis. Surrounding the reaction chamber are annular spaces to which a gaseous reactant is supplied. A plurality of conduits conduct the gaseous reactant from the annular spaces to the reaction
4557915 Production of phosphoric acid December 10, 1985
Phosphoric acid is produced, with concomitant recovery of solids comprising compounds of fluorine and silica, by (i) acidulating a first amount of phosphate ore with a strong acid to produce a first phosphoric acid slurry, (ii) filtering said first slurry to separate the liquid phosphori
4545788 Process and apparatus for discharging and degassing a slurry from an attack tank October 8, 1985
A slurry is discharged from an attack tank and degassed. At the top of the tank there is an overflow for discharging a first slurry portion. A container communicates with a pump. A receptacle is disposed between the overflow discharge and the container and comprises a downwardly inclined
4539424 Preparation of linear esters by carbonylation of monoolefins September 3, 1985
Linear esters, e.g., alkyl adipates, are facilely prepared by reacting an alcohol and carbon monoxide with a monoolefin, in the presence of cobalt, optionally hydrogen, and a tertiary nitrogen base, and in a reaction solvent which comprises a 5- or 6-membered monoheterocycle containing f
4539114 Rotary horizontal table type filter September 3, 1985
A horizontal rotary table filter includes a device connecting the filter table to the carrier structure which provides freedom of movement between the two in the radial direction, to thereby maintain the filter table in a substantially planar condition under adverse operating conditions.
4526529 Clean combustion process/apparatus July 2, 1985
The clean combustion of a combustible material is facilely carried out by (i) in situ generating a dispersing first stream of hot combustion gases by establishing a first downstream axially extending, axially symmetrical helical flowstream of combustion-supporting gases in a first combus
4522760 Recovery of palladium values from carbonylation reaction medium June 11, 1985
Palladium values are separated from the products of reaction resulting from the carbonylation of a conjugated diene with carbon monoxide in the presence of an alcohol, a halogenated hydracid and a palladium catalyst, by (i) contacting the carbonylation reaction medium with a nitrogen,
4521614 Carbonylation of monoolefins June 4, 1985
Esters, e.g., alkyl adipates, are facilely prepared by carbonylation among an alcohol, carbon monoxide and a monoolefin, e.g., an alkyl pentenoate, in the presence of a catalytically effective amount of cobalt and a tertiary nitrogen base, and optionally hydrogen, said reaction being
4519933 Method of producing detergents with lower levels of incrustation of salts on fabrics by incorpor May 28, 1985
Type A, especially type 4A zeolites are well adapted as detergent builders, said zeolites comprising (i) primary particles having a mean particle diameter ranging from 0.1 to 10.mu., (ii) a cation exchange capacity in excess of about 100 mg CaCO.sub.3 /g of anhydrous material, and (iii)
4518516 Sodium metasilicate particulates and detergent compositions comprised thereof May 21, 1985
Novel granular particulates of sodium metasilicate, well adapted for improved detergency applications, are comprised of a central core of essentially anhydrous sodium metasilicate and a core-enveloping sheath of sodium metasilicate pentahydrate therefor, the amount of water which com
4511517 Carbonylation of methyl acetate April 16, 1985
Methyl acetate is carbonylated, advantageously to acetic anhydride, in a homogeneous liquid phase, advantageously in a virtually anhydrous reaction medium, in the presence of (a) a cobalt source, (b) a source of iron in the zero oxidation state, (c) an ionic iodide of the formula A.sup.+
4508917 Preparation of alkyl adipates April 2, 1985
Alkyl adipates are prepared by reacting an alcohol and carbon monoxide with an alkyl pentenoate in the presence of (i) a catalytically effective amount of a cobalt catalyst, (ii) a tertiary nitrogen base, and (iii) hydrogen, with the hydrogen comprising at least 0.1% by volume of the
4500474 Carbonylation of methyl acetate February 19, 1985
Methyl acetate is carbonylated, advantageously to acetic anhydride, in a homogeneous liquid phase, in a virtually anhydrous reaction medium, in the presence of: (a) a cobalt source, (b) a ruthenium source, (c) an ionic iodide of the formula: A.sup.m+ I.sub.m.sup.- in which A.sup.m+ is a
4500473 Preparation of carboxylic acid anhydrides February 19, 1985
Carboxylic acid anhydrides of the formula RCO--O--COR', e.g., acetic anhydride, are facilely prepared by reacting, in an essentially anhydrous, liquid phase containing an aprotic organic solvent, (i) a compound of the formula RX, (ii) a carboxylate of the formula (R'COO.sup.-).sub.n
4485255 Carbonylation of .alpha.,.beta.-unsaturated esters to linear saturated diesters November 27, 1984
Linear saturated diesters, e.g., dialkyl adipates, are prepared by carbonylating an .alpha.,.beta.-unsaturated ester, e.g., an alkyl pent-2-enoate, with carbon monoxide and an alcohol, in the presence of a cobalt catalyst and a tertiary nitrogen-containing base.
4483801 Preparation of sulfonated triarylphosphines November 20, 1984
Sulfonated triarylphosphines well suited for catalysis are facilely prepared by (i) sulfonating the aromatic moieties of a corresponding triarylphosphine starting material with an H.sub.2 SO.sub.4 /SO.sub.3 mixture; (ii) hydrolyzing the sulfonation reaction mixture to terminate said
4467055 Filled polymeric compositions comprising novel polymer/filler interfacing additive August 21, 1984
Polymeric, advantageously elastomeric, e.g., natural or synthetic rubber, matrices including a reinforcing amount of a filler therefor, e.g., inorganic particulates, further comprise, as an interfacing additive between the matrix and the reinforcing filler, the condensation product of
4454333 Palladium catalyzed carbonylation of conjugated dienes with catalyst recycle June 12, 1984
Esters of .beta.,.gamma.-unsaturated carboxylic acids are prepared by (i) carbonylating a conjugated diene with carbon monoxide in the presence of an alcohol, a halogenated hydracid and a palladium catalyst; (ii) distilling the carbonylation reaction product in the presence of an amm

 
 
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