| Patent Number |
Title Of Patent |
Date Issued |
| 5145605 |
Sol-forming cerium material |
September 8, 1992 |
| A novel cerium (IV) material, well adopted for the production of aqueous colloidal sols therefrom, has the general formula (I):whereein M is an alkali metal or a quaternary ammonium radical; t ranges from 0.1 to 0.3; n is 0 or 1; x ranges from 0.1 to 0.7; y is a number such that y=4+t-x- |
| 5080877 |
Novel cerium oxide particulates |
January 14, 1992 |
| Morphologically improved cerium oxide particulates having low sulfur content, useful, e.g., as catalyst/catalyst supports, and having a B.E.T. specific surface of at least 130 m.sup.2 /g measured at a temperature ranging from 400.degree. C. to 500.degree. C., are prepared by reacting an |
| 5010186 |
Acid/heat modified polysaccharide biopolymers |
April 23, 1991 |
| Novel deacetylated polysaccharide biopolymers having improved viscosity/filtrability/injectability, well adopted for the secondary and tertiary recovery of oil deposits, are conveniently prepared by (i) acidifying an aqueous polysaccharide composition, e.g., a carbohydrate fermentati |
| 4999180 |
Neodymium hydroxynitrate |
March 12, 1991 |
| A neodymium hydroxynitrate, readily calcined into, e.g., neodymium oxide, Nd.sub.2 O.sub.3, has the formula (I): |
| 4770864 |
Process for removing NH.sub.3 in an SO.sub.2 -containing gas |
September 13, 1988 |
| An SO.sub.2 -containing gas, in particular, pre-stage gas for the Claus reaction to recover sulfur can effectively be purified by removing NH.sub.3 contained therein using a TiO.sub.2 catalyst. |
| 4760177 |
Process for preparing alkali metal salts of trifluoroacetic acid in the anhydrous and crystallin |
July 26, 1988 |
| A process for preparing alkali metal salts of trifluoroacetic acid in the anhydrous and crystalline state. In a first stage, trifluoroacetic acid is neutralized with an alkaline agent in a medium consisting essentially of an alcohol containing 3 to 4 carbon atoms. In a second stage, the |
| 4741966 |
Organopolysiloxane composition curable by hydrosilylation containing platinum/triene complexes |
May 3, 1988 |
| Novel platinum/olefin complexes, useful for the hydrosilylation curing catalysis of hardenable organopolysiloxane compositions, are facilely prepared by reacting a platinum halide with at least one alkali or alkaline earth metal carbonate or bicarbonate in the presence of an aliphati |
| 4734099 |
Elastomeric silicone depilatory |
March 29, 1988 |
| Unwanted hair is removed from selected skin area by applying a coating of a curable organopolysiloxane composition thereon, permitting the organopolysiloxane composition to crosslink into a silicone elastomer, e.g., in the form of a solid layer or foam, and embed unwanted hair therei |
| 4701569 |
Process for the preparation of perfluoroalkylated alcohols and esters |
October 20, 1987 |
| A process for the preparation of perfluoroalkylated alcohols and esters by bringing a carbonyl-containing derivative and a perfluoroalkyl iodide or bromide into contact with zinc, preferably in the presence of a polar aprotic solvent and/or a pyridine. |
| 4701560 |
Process for the preparation of N-2-alkenyl-m-trifluoromethylanilines |
October 20, 1987 |
| A process for the preparation of N-2-alkenyl-meta-trifluoromethylanilines by the condensation, in an aqueous medium, of an allyl halide with a meta-trifluoromethylaniline in the presence of (1) an alkali metal carbonate, alkali metal hydrogen carbonate or alkali metal hydroxide and ( |
| 4698175 |
Neodymium hydroxy/ammonium nitrate |
October 6, 1987 |
| A novel neodymium hydroxy/ammonium nitrate, readily calcined into, e.g., neodymium oxide, Nd.sub.2 O.sub.3, has the formula (I):wherein 2.ltoreq.x.ltoreq. 2.3,0.7.ltoreq. y.ltoreq.1.0,0.8.ltoreq. z.ltoreq.1.25; and 0.8.ltoreq. n.ltoreq. 1.25. |
| 4680379 |
Homogeneous copolyamide comprised of hexamethylenediamine/adipic acid/short chain diacid/dimer a |
July 14, 1987 |
| Homogeneous, high melting, flexible copolyamides, adopted as molding compositions and for textile applications, are conveniently prepared by (a) prepolymerizing either (i) mixture of adipic acid and hexamethylenediamine, or admixture thereof with at least one other short-chain dicarb |
| 4663137 |
Process for producing cerium oxide particulates |
May 5, 1987 |
| Morphologically improved cerium oxide particulates useful, e.g., as catalysts/catalyst supports, and having a B.E.T. specific surface of at least 85.+-.5 m.sup.2 /g, measured at a temperature ranging from 350.degree. C. to 450.degree. C., are prepared by hydrolyzing an aqueous soluti |
| 4661330 |
Process for the preparation of cerium oxide particulates |
April 28, 1987 |
| Morphologically improved cerium oxide particulates having low sulfur content, useful, e.g., as catalysts/catalyst supports, and having a B.E.T. specific surface of at least 85.+-.5 m.sup.2 /g, measured at a temperature ranging from 350.degree. C. to 500.degree. C., are prepared by reacti |
| 4647438 |
Separation of rare earth values by liquid/liquid extraction |
March 3, 1987 |
| At least one rare earth value is selectively separated from at least one other rare earth value, by selectively liquid/liquid extracting an aqueous phase comprising the nitrates of said rare earth values with an organic phase which comprises an organic extractant, said organic extractant |
| 4578495 |
Preparation of organosilanes/organopolysilanes from disilanes |
March 25, 1986 |
| The organosilanes/organopolysilanes, e.g., methylchlorosilanes useful in the production of silicones, are facilely prepared by contacting, in an inert atmosphere, (1) at least one disilane having the general formula:wherein the radicals R, which may be identical or different, are each C. |
| 4530954 |
Water-based lime dispersion paint |
July 23, 1985 |
| The present invention provides a water-based lime dispersion paint comprising a binder, a pulverulent, and one or more adjuvants. The binder comprises a film-forming copolymer of an alkyl acrylate monomer and a nonionic ethylenic monomer. The copolymer is dispersed in an aqueous medi |
| 4430173 |
Additive composition, bath and process for acid copper electroplating |
February 7, 1984 |
| Additive composition for an acid copper electroplating bath, which bath being well adapted for the copper plating of printed circuits, is comprised of (1) the sodium salt of .omega.-sulfo-n-propyl N,N-diethyldithiocarbamate, (2) polyethylene glycol having an average molecular weight |
| 4417048 |
N-alkylation of organonitrogen compounds |
November 22, 1983 |
| Organonitrogen compounds bearing a labile hydrogen atom directly bonded to a reactive nitrogen function, e.g., nitrogen heterocycles or substituted anilines, are N-alkylated with an N-alkylating agent in the presence of inorganic base and at least one sequestering agent having the struct |
