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| Number | Title | Issue Date |
| 4396766 | Process for producing sodium and zinc pyrithione Disclosed is a process for producing a zinc pyrithione product having an acceptable white or off-white color and containing substantially no undesired 2-hydroxypyridine-N-oxide or metal salt complexes thereof, by (1) making sodium pyrithione by reacting a 2-ha... | 08/02/1983 |
| 4389327 | Use of selected 1,2-dihydro-1,2,4,5-tetrazines as oxygen-scavenging agents Disclosed is a method for removing dissolved oxygen from a liquid (e.g., aqueous) system which comprises adding to said liquid system an effective amount of an oxygen-scavenging chemical selected from 1,2-dihydro-1,2,4,5-tetrazines of the formula ##STR1##... | 06/21/1983 |
| 4385171 | Removal of unreacted diisocyanate from polyurethane prepolymers Unreacted diisocyanate is removed from a polyurethane prepolymer reaction product mixture by co-distillation of the unreacted diisocyanate with a compound which is at least partially miscible with the prepolymer and which boils at a temperature greater th... | 05/24/1983 |
| 4183816 | Use of 2,4-di(lower alkyl)-1,2,4-thiadiazolidin-3,5-diones as additives for functional fluids Disclosed is the use of 2,4-di(lower alkyl)-1,2,4-thiadiazolidin-3,5-diones as ashless load-carrying additives for functional fluids. These thiadiazolidin-3,5-diones have the formula: ##STR1## wherein R1 and R2 are lower alkyl g... | 01/15/1980 |
| 4179559 | 1-Halo- and 1-lower alkoxy-4-trichloromethylphthalazines 1-halo- and 1-lower alkoxy-4-trichloromethylphthalazines are disclosed as fungicides and as novel compositions of matter.... | 12/18/1979 |
| 4178347 | Process for the simultaneous production of wet process phosphoric acid and sodium silicofluoride A process for recovering fluorine and silicon values from a waste-water stream produced in a wet-process phosphoric acid process which comprises: (a) diluting concentrated sulfuric acid with the waste-water stream and producing an SiF4 -containing g... | 12/11/1979 |
| 4168299 | Catalytic method for hydrolyzing urea A method for hydrolyzing urea in aqueous solutions such as waste-water streams which comprises heating the aqueous solution containing urea in the presence of a catalytic amount of vanadium pentoxide for sufficient time and at sufficient temperatures to e... | 09/18/1979 |
| 4096196 | Diazotization-fluorination in a medium of hydrogen fluoride containing tertiary amine compounds Process for preparing fluoroaromatic or fluoropyridines by diazotization-fluorination of aromatic or heterocyclic amines in a solution of hydrogen fluoride containing selected tertiary amine compounds.... | 06/20/1978 |
| 4096090 | Catalyzed hydrazine compositions and methods of their use Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex and preferably a quinone compound. The organometallic complex is the reaction product of a cobaltous or manganous hydroxide and one or more aroma... | 06/20/1978 |
| 4056403 | Solvent composition used to clean polyurethane foam generating equipment A solvent composition is disclosed which comprises a halogenated hydrocarbon and a monohydric alcohol. This composition is used to clean polyurethane foam generating equipment.... | 11/01/1977 |
| 4048107 | Polyurethane foam preparation using amio acetal catalyst Selected amines are used as catalysts in the preparation of polyurethane foam.... | 09/13/1977 |
| 4048084 | Functional fluid systems containing alkoxysilane cluster compounds Functional fluid systems, i.e. hydraulic fluid and heat transfer fluid systems, containing alkoxysilane cluster compounds having the formula RSi[OSi(OR')3 ]3 wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R'... | 09/13/1977 |
| 4048083 | Functional fluid systems containing alkoxysilanol cluster compounds Functional fluid systems, i.e., hydraulic fluid and heat transfer fluid systems, containing alkoxysilanol cluster compounds having the formula RSi[OSi(OR')3 ]2 OH wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and ea... | 09/13/1977 |
| 4035318 | High resilience polyurethane foam Selected tetrafunctional methylene-bridged aromatic isocyanates and a method for their preparation are disclosed. The utility of these isocyanates as cross-linking agents for polyurethanes is also disclosed.... | 07/12/1977 |
| 4034070 | Process for preparing anhydrous metal fluorides A process for preparing anhydrous metal fluorides is described wherein metal is reacted with HF and halogen in the presence of a nitrile.... | 07/05/1977 |
| 4016113 | Use of Schiff bases as cross-linking agents for high resilience polyurethane foam Selected Schiff bases of aromatic and alkylsubstituted aromatic ortho diamines are employed as cross-linking agents in the preparation of high resilience polyurethane foam.... | 04/05/1977 |
| 4011042 | Oxidation of vat and sulfur dyes An improvement is disclosed in the oxidation of reduced vat and sulfur dyes to develop their color and improve its fastness in dyed textiles. The improvement is in using an alkali metal bromite as an oxidizing agent for these dyes.... | 03/08/1977 |
| 4009122 | Novel glycol soluble molybdenum catalysts and method of preparation Novel glycol soluble molybdenum catalysts and a method of preparing them are described. The catalysts, which are useful in epoxidation reactions, are prepared by reacting an oxygen-containing molybdenum compound, an amine, and an alkylene glycol, at eleva... | 02/22/1977 |
| 4009182 | Process for preparing 3-hydroxyoxetane Hydroxyoxetanes of the formula ##STR1## wherein R and R' are each selected from the group consisting of hydrogen and alkyl of from 1 to 5 carbon atoms.... | 02/22/1977 |
| 4008278 | Preparation of 2-amino-5-halobenzotrifluoride 2-Amino-5-halobenzotrifluorides are prepared to the virtual exclusion of other monohalogenated isomers by halogenating an aminobenzotrifluoride with a hydrohalide acid in the presence of selected oxidants.... | 02/15/1977 |
| 4008189 | Hydrophilic polyurethane foam An improvement is disclosed in the preparation of hydrophilic polyurethane foams. The improvement comprises employing, as the polyol reactant used in making the foam, a mixture of selected oxyalkylated polyhydric alcohols. The resulting foam has improved ... | 02/15/1977 |
| 3995011 | Preparation of tungsten hexafluoride from halogen and hydrogen fluoride Tungsten hexafluoride is prepared by reacting selected tungsten compounds with a halogen and hydrogen fluoride at elevated temperature and pressure under substantially anhydrous conditions in the substantial absence of air.... | 11/30/1976 |
| 3993693 | Method for producing perchloromethyl mercaptan An improved process is disclosed for the manufacture of perchloromethyl mercaptan by chlorination of carbon disulfide in the presence of aqueous hydrochloric and sulfuric acids in which a high concentration of sulfuric acid is maintained in the reactor to... | 11/23/1976 |
| 3993610 | Polyurethane foam Selected chlorine-containing methylene-bridged diaryl diisocyanates are used in the production of polyurethane foam.... | 11/23/1976 |
| 3992429 | Alkoxysilane multiple cluster compounds and their preparation Novel alkoxysilane cluster compounds are described having the formula or wherein a = 2, 3 or 4; M is a substituted or unsubstituted branched or straight chain hydrocarbon di-, tri- or tetraradical having up to 25 carbon atoms; R is hydrogen, an alkyl, alkenyl,... | 11/16/1976 |
| 3992506 | Process for recovery of silver and regeneration of 2-mercaptopyridine-1-oxide A method is provided for removing silver from aqueous systems contaminated therewith with 2-mercaptopyridine-1-oxide and for recovering the 2-mercaptopyridine-1-oxide.... | 11/16/1976 |
| 3992488 | 1-Phosphorosemicarbazides 1-Phosphorosemicarbazides having the formula ##EQU1## are effective and durable additives for reducing the combustibility of cotton fabrics to which they are applied.... | 11/16/1976 |
| 3991090 | Method of preparing molybdenum derivative compound catalysts for epoxidation reactions A method of preparing molybdenum derivative compound catalysts for epoxidation reactions is described wherein an oxygen-containing molybdenum compound is reacted with an organic compound having vicinal hydroxyl groups in the presence of a hydrohalic acid ... | 11/09/1976 |
| 3989773 | Method for decolorizing phosphate polyesters Selected bleaching agents are used to decolorize off-color phosphate polyesters.... | 11/02/1976 |
| 3987129 | Process for preparing bis(2-haloalkyl) phosphoro-halidates An improved process is disclosed for the preparation of bis(2-haloalkyl) phosphorohalidates. This process comprises the steps of reacting phosphorus trihalide with a stoichiometric excess of alkylene oxide to form tris(2-haloalkyl) phosphite, substantiall... | 10/19/1976 |
| 3980579 | Catalytically stable halogenated polyol composition A catalytically stabilized polyol composition, for use in the preparation of polyurethane foam, is disclosed which comprises a halogen-containing polyol, an amine catalyst and a sulfur-containing organotin compound.... | 09/14/1976 |
| 3969423 | Continuous preparation of 2,4,4,4-tetrachlorobutanol A continuous process for preparing 2,4,4,4-tetrachlorobutanol by reacting allyl alcohol with carbon tetrachloride in the presence of a catalyst system comprised of carbon dioxide and an iron-containing material.... | 07/13/1976 |
| 3968170 | Halogenated acetals A new group of halogenated acetals is disclosed. These acetals, which are derived from the reaction of 2,4,4,4-tetrachlorobutanol with an aldehyde, are useful as additives for reducing the burning rate of polyurethane foam.... | 07/06/1976 |
| 3962113 | Method for accelerating oxygen removal employing an aqueous solution of an alkyl hydrazine The rapid removal of dissolved oxygen from aqueous solutions is accomplished by treating the solution with an effective proportion of a liquid organic hydrazine compound. The method of this invention is particularly useful in the removal of dissolved oxyg... | 06/08/1976 |
| 3962120 | Polyurethane foam generating apparatus An improved apparatus is disclosed for the on-site generation of polyurethane foam. The apparatus comprises a timing device, which is readily accessible to the foaming operator, for accurately controlling the size of each foam shot.... | 06/08/1976 |
| 3960697 | Diaphragm cell having uniform and minimum spacing between the anodes and cathodes A diaphragm cell is provided having a continuous net between the anodes and the diaphragm. The continuous net permits the minimum anode-cathode spacing to be employed while maintaining uniform anode-cathode spacing throughout the cell. In addition, the di... | 06/01/1976 |
| 3960694 | Novel anode adjustment apparatus An improved anode adjustment means for mercury cells is disclosed in which a plurality of worm gears are employed to adjust the height of a plurality of anodes attached to arms secured to a central anode support member which is operated by the plurality o... | 06/01/1976 |
| 3956094 | Apparatus for monitoring available chlorine in swimming pools An improved method and apparatus for the measurement of amounts of free available chlorine in solution which is independent of the pH have been developed. The apparatus includes a sensing electrode, which is internally buffered and self-cleaning, and a re... | 05/11/1976 |
| 3954948 | Process for manufacture of calcium hypochlorite A continuous process for the manufacture of calcium hypochlorite in which an aqueous slurry of lime and sodium hypochlorite is chlorinated in a mixing zone to form a sodium chloride solution containing large crystals of calcium hypochlorite which are read... | 05/04/1976 |
| 3953316 | Metal anode assembly An improved metal anode assembly formed as an integral titanium casting which is comprised of a spider-like distributor having an anodic surface secured to the bottom thereof. At least one anode post receiver is formed in the top of the distributor. The a... | 04/27/1976 |
