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| Number | Title | Issue Date |
| 4997978 | Preparation of alkyl carboxylates by hydrocarbonylation Alkyl carboxylates of the formula: R--CO--O--CH2 R' are prepared by hydrocarbonylating a compound of the formula: R--CO--O--R' in the simultaneous presence, in the reaction medium, of cobalt, ruthenium, an alkyl iodide and an ionic iodide, the atomic rat... | 03/05/1991 |
| 4942697 | Rare earth polishing compositions Rare earth glass-polishing compositions of improved homogeneity and reproducibility are prepared by (a) simultaneously continuously admixing a cerium salt solution, a basic solution and a solution of at least one acid and/or one salt, the anion or anions ... | 07/24/1990 |
| 4937058 | Catalytic oxidation of sulfur compounds Sulfur containing organics, e.g., carbon disulfide carbon oxysulfide, or a mercaptan, are oxidized to sulfur dioxide in gaseopus phase, whether alone or conjointly with hydrogen sulfide and/or elemental sulfur, per se, by passing a gaseous stream thereof,... | 06/26/1990 |
| 4927609 | Recovery of gallium/rare earth values from oxide mixtures thereof Gallium and rare earth values are recovered from oxide mixtures thereof by acidulating/dissolving such admixtures in an acid medium, and then liquid/liquid extracting the resulting solution and ultimately recovering said values from the phases which separ... | 05/22/1990 |
| 4916119 | Peptides, their preparation and compositions containing them Tripeptides of the general formula: ##STR1## wherein the symbols R, which may be the same or different represent hydrogen or a fatty acid residue (at least one of them representing a fatty acid residue), R1 represents hydroxy, amino or alk... | 04/10/1990 |
| 4748166 | RTV storage stable, water-free organopolysiloxanes Storage stable, water-free, RTV organopolysiloxane adhesives curable in the presence of water or atmospheric moisture, and comprising a dihydroxydiorganopolysiloxane polymer, fillers, an amine fraction and a curing catalyst, are characterized by incorpora... | 05/31/1988 |
| 4742048 | Tetrapeptides and pentapeptides, their preparation and compositions containing them Tetrapeptides and pentapeptides of the formula: ##STR1## wherein R represents hydrogen or a fatty acid residue, R1 represents hydroxy, amino, alkoxy of 1 to 4 carbon atoms, optionally substituted by phenyl or nitrophenyl, one of R2 | 05/03/1988 |
| 4724129 | Method of recovering gallium from very basic solutions by liquid/liquid extraction The method of recovering gallium from very basic solutions such as sodium aluminum liquors from the Bayer process by liquid/liquid extraction by means of an organic phase, preferably formed of an organic solvent and water-insoluble alkylhydroxyquinolines ... | 02/09/1988 |
| 4704425 | Novel precipitated silica particulates Improved precipitated silica particulates, well adapted as a pigment or reinforcing filler for curable organosilic polymers and other elastomers, have the properties:... | 11/03/1987 |
| 4671947 | Novel sodium orthophosphate A novel sodium orthophosphate has the formula Na5 H4 (PO4)3 wherein the Na/P ratio thereof is essentially 5/3, and which is characterized by but a single crystalline phase and a characteristic X-ray diffraction ... | 06/09/1987 |
| 4671949 | Novel anhydrous sodium tripolyphosphate A novel anhydrous sodium tripolyphosphate, well adapted as an additive for foodstuffs and detergent compositions, has an Na/P ratio of essentially 1.667&#b1;0.01, an apparent density of from 0.5 to 1.1, a mean agglomerate size of less than 100 microns, a ... | 06/09/1987 |
| 4629815 | Isomerization/rearrangement of polychlorobenzenes Polychlorobenzenes are isomerized/rearranged, by reacting (i) at least one tetrachlorobenzene, or at least one tetrachlorobenzene in admixture with at least one trichlorobenzene, pentachlorobenzene and/or hexachlorobenzene, or (ii) pentachlorobenzene, or ... | 12/16/1986 |
| 4622393 | 3-vinyl-cephalosporins and their preparations New 3-vinylcephalosporins of the general formula (I), ##STR1## in which n=0 or 1, R1 is a radical of the general formula (II), ##STR2## in which R4 is hydrogen or a protective radical and R5 represents a radical ... | 11/11/1986 |
| 4622425 | Process for the preparation of aqueous solutions of low molecular weight polyacrylic acids or their salts A process for the manufacture of low molecular weight polyacrylic acids or their salts is provided, particularly, their aqueous solutions. Acrylic acid in an aqueous solution containing a polymerization initiator is polymerized in the presence of acetic a... | 11/11/1986 |
| 4612292 | Lead/alkaline earth metal silicates and vitrescible compositions comprised thereof SiO2 /MeO metallic silicates, wherein Me is lead or an alkaline earth metal, have a molar ratio of SiO2 to MeO of greater than 2, and same are well suited as pigments, fillers, and especially as glass-formers.... | 09/16/1986 |
| 4609504 | Process for the preparation of acetic anhydride The invention relates to a process for the preparation of acetic anhydride by carbonylation. In the process, carbon monoxide is reacted with methyl acetate in an anhydrous medium, in the liquid phase, in the presence of an effective amount of nickel, meth... | 09/02/1986 |
| 4547408 | Metal-clad laminate adapted for printed circuits A metallized, laminated substrate well adapted for the production of printed circuits is comprised of: (A) an electrically insulating support element which comprises (a) a central core member comprising a major proportion by weight of a cellulosic or mica... | 10/15/1985 |
| 4544698 | Polymer coating composition and its use in the manufacture of layered packaging The invention pertains to the field of packaging and to a coating composition composed of a polyvinyl alcohol solution and a polymer latex for imparting gas and flavor tight packaging.... | 10/01/1985 |
| 4529410 | Rare earth polishing compositions Rare earth glass-polishing compositions of improved homogeneity and reproducibility are prepared by (a) simultaneously continuously admixing a cerium salt solution, a basic solution and a solution of at least one acid and/or one salt, the anion or anions ... | 07/16/1985 |
| 4523959 | Purification of sugarcane juice A process for purifying sugarcane juices by contacting the juices to be purified in succession with a hydrophobic adsorbent, a supported strong anion exchange material or a hydrophobic adsorbent having anion exchanger groups, an anion exchange resin, and ... | 06/18/1985 |
| 4524057 | Production of concentrated phosphoric acid and hemihydrated calcium sulfate Concentrated phosphoric acid and calcium sulfate hemihydrate are directly produced by sulfuric acid attack upon calcium phosphate, the improvements comprising (i) continuously conducting the acid attack reaction, with concomitant formation of crystalline ... | 06/18/1985 |
| 4520193 | Cephalosporin derivatives The invention provides new cephalosporin derivatives of the general formula, ##STR1## which are in the form of a bicyclooct-2-ene or bicyclooct-3-ene, in which formula R1 is a radical of the general formula ##STR2## [in which R | 05/28/1985 |
| 4518754 | Imido copolymers Novel imido copolymers are prepared by copolymerizing: [i] a bis-maleimide of the structural formula: ##STR1## [ii] an olefinically unsaturated comonomer copolymerizable therewith. The subject copolymers are applicable to the production of a variety of us... | 05/21/1985 |
| 4518755 | Imido copolymers Novel imido copolymers are prepared by copolymerizing: [i] a bis-maleimide of the structural formula: ##STR1## with [ii] a (meth)acrylic acid amide. The subject copolymers are applicable to the production of a variety of useful shaped articles, coatings,... | 05/21/1985 |
| 4504643 | (Meth)acrylic acid/methallylsulfonate copolymers Water-soluble (meth)acrylic acid/methallylsulfonate copolymers, containing less than 20% by weight of the methallylsulfonate comonomer, are well suited as scale inhibitors for aqueous environments, especially those comprising essentially equal amounts by ... | 03/12/1985 |
| 4504682 | Novel polyoxaalkyl aminoalcohols Novel polyoxaalkyl aminoalcohols, well adapted for the complexation/solubilization of a wide variety of cations, have the structural formula: ##STR1##... | 03/12/1985 |
| 4503158 | Double or mixed silicates of alkali metal and other glass modifier metal(s) used to prepare glass compositions An at least double silicate of an alkali metal and at least one other metal is prepared by interreacting (i) an aqueous solution of an alkali metal silicate and (ii) a solution of an oxide of such at least one other metal, or salt thereof, in the presence... | 03/05/1985 |
| 4487975 | Etherification of phenols Phenols, including the polyhydric phenols, are selectively monoetherified with an alkyl or alkenyl carboxylate, or admixture of compounds adapted to in situ form such carboxylate, in the presence of a salt of a carboxylic acid.... | 12/11/1984 |
| 4463196 | Process for the preparation of citral Citral is prepared by heating dehydrolinalol in the presence of a vanadium compound as catalyst and an alkanol of 12 to 18 carbon atoms as co-catalyst, whereby isomerization is effected. There may also be present an alkanol or cycloalkanol of 7 to 11 carb... | 07/31/1984 |
| 4462937 | Process for the preparation of trifluoromethylbenzenes from the corresponding trichloro- or tribromo-methylbenzenes This invention relates to a continuous process for the preparation of trifluoromethylbenzenes from the corresponding trichloro- or tribromo-methylbenzenes with hydrofluoric acid. The process is characterized by passing an ascending stream of gaseous hydro... | 07/31/1984 |
| 4460786 | Process for the selective addition of a compound having an activated carbon atom onto a substituted conjugated diene The selective addition of a compound having an activated carbon atom onto the carbon atom in the 4-position of a buta-1,3-diene carrying a hydrocarbon substituent on the carbon atom in the 2-position is achieved by reacting the compound having the activat... | 07/17/1984 |
| 4460801 | Unsaturated fatty alcohols and method of preparing them New unsaturated fatty alcohols of the formula: ##STR1## in which n=2 or 4 are provided and are prepared by the novel process of reacting butadiene with water in the presence of a palladium salt and orthoboric acid, B(OH)3, in a polar aprot... | 07/17/1984 |
| 4459242 | Method of preparing alkaline difluoromethane sulfonates A method of preparing alkaline difluoromethane sulfonates by reacting an alkali-metal sulfite of the formula M2 SO3, in which M represents an alkali-metal of column 1 of the Periodic Table of the Elements, with at least an equimolecu... | 07/10/1984 |
| 4456657 | Metal-clad laminate adapted for printed circuits A metallized, laminated substrate well adapted for the production of printed circuits is comprised of: (A) an electrically insulating support element which comprises (a) a central core member comprising a major proportion by weight of a cellulosic or mica... | 06/26/1984 |
| 4455235 | Scale inhibition method employing (meth)acrylic acid/methallylsulfonate copolymer Water-soluble (meth)acrylic acid/methallysulfonate copolymers, containing less than 20% by weight of the methallylsulfonate comonomer, are well suited as scale inhibitors for aqueous environments, especially those comprising essentially equal amounts by w... | 06/19/1984 |
| 4454012 | Process for the preparation of methionine Crystalline methionine is prepared from an alkali metal methioninate by continuously electrolyzing an aqueous solution of the said alkali metal methioninate and a support electrolyte in an intermediate compartment of a cell comprising an anode compartment... | 06/12/1984 |
| 4452974 | Preparation of hexamethylenediamine/adipic acid/dimer acid copolyamide Flexible, homogeneous and transparent copolyamides comprise the polycondensation products of adipic acid, fatty acid dimer and hexamethylenediamine, the molar ratio of weight adipic acid to weight of total acid in each ranging from about 0.5 to 0.99, and ... | 06/05/1984 |
| 4447331 | Intimate contacting/separating of plural phases Intimate contacting of plural, physically disparate phases, e.g., for the purification of waste waters typically comprising sulfide and polysulfide pollutants, is effected by (i) co-atomizing a first liquid stream which comprises solid waste progenitors t... | 05/08/1984 |
| 4447631 | Redistribution of tetramethylsilane/dimethyldichlorosilane into trimethylchlorosilane Tetramethylsilane/dimethyldichlorosilane admixtures are redistributed into trimethylchlorosilane by passing same, in vapor phase, through a reaction zone under mild temperatures and comprising a catalytic amount of anhydrous aluminum chloride granules. Pr... | 05/08/1984 |
| 4442060 | Injection-molding of pasty, thermosetting organopolysiloxane compositions Pasty organopolysiloxane compositions are facilely injection-molded into elastomeric shaped articles at low pressures, at a temperature ranging from about 125° C. to about 225° C., and in a molding cycle of less than about 25 seconds, said pasty organop... | 04/10/1984 |
