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| Number | Title | Issue Date |
| 4354915 | Low overvoltage hydrogen cathodes A cathode for use in electrolytic processes and a process for preparing such cathodes is described. The cathode has a cathodically active surface comprising a codeposit of a first metal selected from the group consisting of iron, cobalt, nickel, and mixtu... | 10/19/1982 |
| 4343951 | Method for the preparation of fluoroaniline A process for the preparation of fluoroaniline compounds comprises the steps of (A) reacting an ammonium fluorophthalamate or a fluorophthalamic acid of the formula ##STR1## where n is 1 or 2 with an alkali or an alkali earth metal hypochlorite to ... | 08/10/1982 |
| 4342630 | Brine distribution system for electrolytic cells Electrolytic cells demonstrate improved performance through use of an internal brine distribution system. A brine distributor located in the interior of the cell and positioned either at the cell bottom or above the cell's electrodes has individual brine ... | 08/03/1982 |
| 4342845 | Vinyl halide-polyolefin polymer and copolymers and method of making The present invention relates to production of vinyl halide-polyolefin graft copolymers by a liquid phase bulk polymerization process wherein the process is carried out in the presence of a diluent. Suitable diluents preferably have vaporization pressure ... | 08/03/1982 |
| 4342636 | Process for forming a porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells A porous polyfluoroalkylene sheet, very preferably of polytetrafluoroethylene, which is suitable for use as a separator in an electrolytic cell, such as one used for the electrolysis of brine, has a porosity in the range of 70 to 90%, a thickness in the r... | 08/03/1982 |
| 4342460 | Gasket means for electrolytic cell assembly In filter press electrolytic cell assemblies, gasketing materials are frequently used for sealing the cell contents between individual frames. An improved design of gasket is disclosed, having a bulb profile at one surface with a hollow or indented profil... | 08/03/1982 |
| 4337235 | Purification of thionyl chloride A process for the purification of crude thionyl chloride wherein the crude thionyl chloride is distilled in the presence of sulfur and a sulfur-aluminum chloride catalyst to convert the impurities, sulfuryl chloride and sulfur dichloride and remove them f... | 06/29/1982 |
| 4332659 | Electrolytic apparatus for the manufacture of alkali metal halate An electrolytic apparatus for the production of an alkali metal halate, such as sodium chlorate, from an aqueous solution of alkali metal halide, such as sodium chloride, includes vertical anodes and cathodes in alternating relationship in a housing, and ... | 06/01/1982 |
| 4332648 | Electrolytic apparatus for the manufacture of alkali metal halate An improved electrolytic apparatus for the production of an alkali metal halate, such as sodium chlorate, from an aqueous solution of alkali metal halide, such as sodium chloride, includes modular, vertical anodes and cathodes in alternating relationship ... | 06/01/1982 |
| 4332662 | Electrolytic cell having a depolarized cathode An improved electrolytic cell for the electrolysis of alkali metal halide solutions to produce halides and alkali metal hydroxides is provided wherein current reductions are obtained by the passage of an oxidizing gas, such as oxygen, into a porous cathod... | 06/01/1982 |
| 4330515 | Preparation of phosphorous acid from industrial waste material containing phosphites A process for the preparation of phosphorous acid from phosphites contained in industrial wastes, wherein the waste material is dissolved in an aqueous solution of phosphorous acid and reacted with a strong mineral acid that will remove the cation of the ... | 05/18/1982 |
| 4327012 | Polymer blends with improved hydrolytic stability This invention relates to polymer blends having improved hydrolytic stability which comprise, in admixture, (1) a linear aromatic polyester of monomer residues consisting essentially of residues of a dicarboxylic acid and a bisphenol, and (2) a SAN polyme... | 04/27/1982 |
| 4319017 | Semi or fully continuous process for polyester of bisphenol and dicarboxylic acid by transesterification polymerization and product thereof Linear aromatic polyesters of bisphenols and dicarboxylic compounds are prepared by transesterification polymerization in either a fully continuous process or in a semi-continuous process wherein a first stage is conducted batchwise and a second stage is ... | 03/09/1982 |
| 4319002 | Vinyl halide polymer blends of enhanced impact resistance A polymer blend capable of being molded to an impact resistant, substantially transparent or translucent article which comprises a vinyl halide homopolymer or copolymer, a conventional impact resistance enhancing polymer agent for polyvinyl halide wherein... | 03/09/1982 |
| 4317805 | Removal of hydrogen fluoride from gaseous mixtures of hydrogen fluoride and hydrogen chloride A method of removing hydrogen fluoride from gaseous mixtures of hydrogen fluoride and hydrogen chloride, which contain up to about 5 percent by weight of hydrogen fluoride, is described. The method comprises initially contacting the gaseous mixture with a... | 03/02/1982 |
| 4312975 | Bisphenol-dicarboxylic acid diester and compositions thereof with linear aromatic polyester having improved processability There is disclosed a diester of a bisphenol having two dicarboxylic acid residues wherein the dicarboxylic acid residues terminate in carboxylic acid ester groups derived from a long chain aliphatic monofunctional hydrocarbon alcohol. Compositions of the ... | 01/26/1982 |
| 4311620 | Foundry aggregate binders and foundry compositions prepared therefrom Novel resin binders for foundry sand molds and cores are provided by reacting a polyol component comprising a phenol ketone resin, a reactive solvent and a cross-linking agent in a solution for these components with a solution of an organic polyisocyanate... | 01/19/1982 |
| 4309379 | Method and apparatus for runnerless injection-compression molding thermosetting materials A method and apparatus are described. A thermosetting molding material, suitably a synthetic resin composition such as a phenolic molding composition, is initially heated and plasticized. The plasticized mass is passed as a stream through an injection noz... | 01/05/1982 |
| 4305862 | Polymer blends with improved dielectric strength This invention relates to polymer blends having improved hydrolytic stability, moldability, fire retardancy and dielectric strength which comprise, in admixture, (1) a linear aromatic polyester prepared from an aromatic dicarboxylic acid and bisphenol, an... | 12/15/1981 |
| 4304709 | Polymer blends with improved hydrolytic stability This invention relates to polymer blends having improved hydrolytic stability which comprise, in admixture, (1) a linear aromatic polyester of monomer residues consisting essentially of residues of a dicarboxylic acid and a bisphenol, and (2) an MBS polym... | 12/08/1981 |
| 4301014 | Phosphorus pentasulfide waste water treatment The process disclosed in this invention takes the waste solids, gases, and water from a phosphorus pentasulfide manufacturing facility and hydrolyzes the phosphorus pentasulfide by heating. The phosphorus portion is converted to a soluble phosphate and th... | 11/17/1981 |
| 4299606 | Recovery of HF and HCl from gaseous mixtures thereof A process is disclosed for recovering HF and HCl in substantially purified form from a gaseous mixture containing HF, HCl and halogenated organic vapors. The process comprises: A. feeding the gaseous mixture to the lower part of a rectification column to ... | 11/10/1981 |
| 4297196 | Stable low voltage microporous diaphragm for electrolytic cells A porous polyfluoroalkylene sheet, preferably of polytetrafluoroethylene, which is suitable for use as a stable low voltage separator or diaphragm in an electrolytic cell, such as one employed for the electrolysis of brine, without being subject to an obj... | 10/27/1981 |
| 4296244 | (3-Trifluoromethylphenyl)-alpha-hydroxyacetic acid and process for preparation The present invention provides a novel organic compound, (3-trifluoromethylphenyl)-alpha-hydroxyacetic acid, and a process for the preparation thereof comprising the steps of: a. converting (3-trifluoromethyl)-benzotrichloride to the corresponding benzoyl... | 10/20/1981 |
| 4295951 | Film-coated cathodes for halate cells A film-coated cathode is provided for the electrolysis of alkali metal halide solutions in the substantial absence of chromium ions. The cathode comprises a conductive substrate, such as titanium, steel, iron, or alloys thereof, coated with an adherent, p... | 10/20/1981 |
| 4292146 | Porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells A porous polyfluoroalkylene sheet, very preferably of polytetrafluoroethylene, which is suitable for use as a separator in an electrolytic cell, such as one used for the electrolysis of brine, has a porosity in the range of 70 to 90%, a thickness in the r... | 09/29/1981 |
| 4290744 | Apparatus for runnerless injection-compression molding thermosetting materials An improved molding apparatus for injection-compression molding thermosetting materials is described. The apparatus comprises a stationary platen assembly, a moveable platen assembly and a feed nozzle assembly. The stationary assembly is comprised of a station... | 09/22/1981 |
| 4289600 | Microporous membrane materials Microporous membrane materials suitable for use in electrolytic cells, such as cells for the electrolysis of brine to produce chlorine, are formed from a mixture of polytetrafluoroethylene, a particulate pore forming material and an organic fluorinated lu... | 09/15/1981 |
| 4289060 | Device and assembly for mounting parts An improved assembly for mounting a part onto a base member is provided by incorporating a tubular insert having a hollow inner core in a mounting hole in the part. A fastener, such as a bolt, machine screw or rivet, may then be inserted through the inser... | 09/15/1981 |
| 4289061 | Device and assembly for mounting parts An improved assembly for mounting a part onto a base member is provided by incorporating a tubular insert having a hollow inner core in a mounting hole in the part. A fastener, such as a bolt, machine screw or rivet may then be inserted through the insert... | 09/15/1981 |
| 4288286 | Kraft mill recycle process A cellulosic pulp and bleaching process is described. The process integrates two cycles, one is a digestor liquor cycle and the other is a sulfur cycle. The digestor liquor cycle comprises the steps of digesting a fibrous cellulosic feed to form a pulp, s... | 09/08/1981 |
| 4285795 | Electrolysis apparatus An improved apparatus for the electrolysis of aqueous solutions of ionizable chemical compounds is disclosed including specifically an apparatus for the production of chlorine and caustic containing low concentrations of sodium chloride by the electrolysi... | 08/25/1981 |
| 4284549 | Polymer blends with improved hydrolytic stability This invention relates to polymer blends having improved hydrolytic stability, moldability and fire retardancy which comprise, in admixture, (1) a linear aromatic polyester prepared from an aromatic dicarboxylic acid and a bisphenol, and (2) polyphenylene... | 08/18/1981 |
| 4283264 | Electrolytic cell separator, tubular member component thereof and methods for manufacturing and using such separator and component A separator for an electrolytic cell or similar cell is made of a porous polymeric material, preferably porous polytetrafluoroethylene, and comprises a plurality of tubular portions of such material with one or two flange(s) at end(s) thereof for sealing ... | 08/11/1981 |
| 4283287 | Stable non-caking aqueous slurry of sodium chlorate and sodium chloride and method of making A flowable, non-caking aqueous slurry of sodium chlorate and sodium chloride having a weight ratio of sodium chloride to sodium chlorate between about 0.55 and 0.65, and, more preferably, about 0.59, is described. The slurry contains a solid phase essenti... | 08/11/1981 |
| 4283523 | Fluoro-alkyl ester-terminated linear aromatic polyester of enhanced hydrolytic stability The invention relates to a linear aromatic polyester of enhanced hydrolytic stability comprising bisphenol and dicarboxylic acid monomer residues which contains carboxylate ester end groups derived from a fluoro aliphatic alcohol of 1 to 45 carbon atoms. ... | 08/11/1981 |
| 4278785 | Polyester composition, process therefor and molded articles therefrom There are described linear aromatic polyesters of a bisphenol and a dicarboxylic acid having terminal carboxylate ester substituents of an aliphatic monofunctional alcohol of 8 to 45 carbons. The polyesters have enhanced hydrolytic stability compared to c... | 07/14/1981 |
| 4271319 | Phenyl beta-chloro-alpha-hydroxy-beta-(3-trifluoromethylphenyl)ethyl ketone and process for its production The present invention relates to a novel organic compound, phenyl beta-chloro-alpha-hydroxy-beta-(3-trifluoromethylphenyl)ethyl ketone. This compound may be produced by: (a) condensing 3-trifluoromethylbenzaldehyde with acetophenone under basic conditions... | 06/02/1981 |
| 4269754 | Phenolic resin particles and processes for their production and friction elements containing same Phenolic resin particles which are useful as friction particles for use in friction elements such as brake linings, clutch facings or other braking devices are produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a visco... | 05/26/1981 |
| 4268687 | Method of making methyl and ethyl esters of (3-trifluoromethylphenyl)-acetic acid The present invention provides a novel process for the production of methyl or ethyl ester of (3-trifluoromethylphenyl)-acetic acid. The process comprises the steps of: (a) converting (3-trifluoromethyl)-benzotrichloride to the corresponding benzoyl chlor... | 05/19/1981 |
