| Patent Number |
Title Of Patent |
Date Issued |
| 4354915 |
Low overvoltage hydrogen cathodes |
October 19, 1982 |
| 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 mixtures thereof, a leachable second m |
| 4349448 |
Low temperature low foaming alkaline cleaner and method |
September 14, 1982 |
| Described is a low temperature low foaming alkaline cleaner composition comprising:(a) an alkaline portion containing at least 75% by weight (PBW) of alkaline materials selected from the group consisting of alkali or alkaline earth metal borate, silicate, carbonate, hydroxide, phosphate |
| 4347107 |
Electroplating tin and tin alloys and baths therefor |
August 31, 1982 |
| Improved electroplating bath for depositing bright, metallic tin wherein divalent tin, in the form of stannous sulfate or fluoroborate, is present in conjunction with sulfuric or fluoroboric acid, brighteners including an aromatic amine and an aliphatic aldehyde, a polyalkylene ether sur |
| 4343951 |
Method for the preparation of fluoroaniline |
August 10, 1982 |
| 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 form the corresponding fluoroant |
| 4342845 |
Vinyl halide-polyolefin polymer and copolymers and method of making |
August 3, 1982 |
| 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 characteristics, within 100 psi., |
| 4342636 |
Process for forming a porous polyfluoroalkylene sheet useful for separating anolyte from catholy |
August 3, 1982 |
| 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 range of 0.2 to 3.5 mm. and at |
| 4342630 |
Brine distribution system for electrolytic cells |
August 3, 1982 |
| 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 outlets for feeding electrolyte |
| 4342460 |
Gasket means for electrolytic cell assembly |
August 3, 1982 |
| 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 profile on the opposite. Use of this |
| 4341558 |
Metal surface coating agent |
July 27, 1982 |
| A composition and process are useful for imparting corrosion resistance and paint receptivity to metal surfaces. The process involves application of an aqueous wet film which is dried in place and thus avoids effluent problems from conventional processes involving rinsing. The compositio |
| 4339310 |
Method of surface treatment of tin plated cans and tin plated steel sheets |
July 13, 1982 |
| An aqueous chromium-free composition is useful for imparting a corrosion resistance paintable coating to a tin surface. The composition contains a titanium or zirconium compound, a pyrazole derivative, a myoinositol phosphate ester and a silicon compound. The surface is either chemically |
| 4338140 |
Coating composition and method |
July 6, 1982 |
| An aqueous acidic composition provides improved corrosion resistance to a metal, e.g., ferrous, zinc or aluminum surface upon contact. The composition contains dissolved hafnium and/or zirconium, fluoride, preferably a vegetable tannin compound, and optionally phosphate ions. |
| 4337235 |
Purification of thionyl chloride |
June 29, 1982 |
| 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 from the distillate of thionyl |
| 4337091 |
Electroless gold plating |
June 29, 1982 |
| Improved electroless or autocatalytic gold plating baths wherein the gold ingredient is a water soluble trivalent gold component selected from an alkali metal auricyanide, an alkali metal aurihydroxide, and an alkali metal aurate. The bath contains an amino borane, an alkali metal bo |
| 4336114 |
Electrodeposition of bright copper |
June 22, 1982 |
| A composition and method for electrodepositing ductile, bright, level copper deposits from an aqueous acidic copper plating electrolyte particularly suited for plating electronic circuit boards containing a brightening and leveling amount of a brightening and leveling system comprisi |
| 4332662 |
Electrolytic cell having a depolarized cathode |
June 1, 1982 |
| 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 cathode to depolarize the cathode and |
| 4332659 |
Electrolytic apparatus for the manufacture of alkali metal halate |
June 1, 1982 |
| 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 an upwardly oriented flow dir |
| 4332648 |
Electrolytic apparatus for the manufacture of alkali metal halate |
June 1, 1982 |
| 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 in a housing, and an upwardly |
| 4332647 |
Composition and method for electrodeposition of black nickel |
June 1, 1982 |
| A process and aqueous composition for electro-depositing a uniform, adherent substantially black nickel deposit on a conductive substrate. The aqueous solution is of a pH ranging from about 4 to about 12 and contains nickel ions, borate ions, conductivity salts and a controlled effective |
| 4331715 |
Process for improving the corrosion resistance of conversion coated parts |
May 25, 1982 |
| An aqueous based coating composition comprises a flow control agent, a water solubilized epoxy adduct of an epoxy compound and an amino-substituted aromatic carboxylic acid, and a curing agent. The coating composition is applied to conversion coated steel parts to provide an improved |
| 4331230 |
Work rack for conveying apparatus |
May 25, 1982 |
| A work conveying apparatus for transporting work pieces through a plurality of treating stations including a work rack for supporting the work pieces which is tiltable, according to one embodiment of the invention, in one direction when in a raised position to facilitate drainage of solu |
| 4330515 |
Preparation of phosphorous acid from industrial waste material containing phosphites |
May 18, 1982 |
| 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 phosphite producing phosphorus |
| 4327012 |
Polymer blends with improved hydrolytic stability |
April 27, 1982 |
| 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 polymer. |
| 4319017 |
Semi or fully continuous process for polyester of bisphenol and dicarboxylic acid by transesteri |
March 9, 1982 |
| 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 conducted in a continuous man |
| 4319002 |
Vinyl halide polymer blends of enhanced impact resistance |
March 9, 1982 |
| 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 the monomer units consist es |
| 4317805 |
Removal of hydrogen fluoride from gaseous mixtures of hydrogen fluoride and hydrogen chloride |
March 2, 1982 |
| 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 particulate, substantially a |
| 4316751 |
Electrical resistance coating for steel |
February 23, 1982 |
| Disclosed is a process for applying an electrical insulating coating onto a ferrous metal surface and the ferrous metal surface with the coating thereon. The insulating coating comprises phosphate and nitrate applied in a thin film of from about 200 mg to about 400 mg coating weight per |
| 4314893 |
Production of multiple zinc-containing coatings |
February 9, 1982 |
| Markedly superior corrosion protective properties are imparted to metal-bearing surfaces at substantially reduced costs by depositing upon said surfaces one or more superimposed coatings containing zinc alloying elements located intermediate the metal-bearing surfaces and a sacrificial |
| 4312975 |
Bisphenol-dicarboxylic acid diester and compositions thereof with linear aromatic polyester havi |
January 26, 1982 |
| 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 diester and a linear aromatic |
| 4311620 |
Foundry aggregate binders and foundry compositions prepared therefrom |
January 19, 1982 |
| 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. The foundry binder cures rapidl |
| 4309379 |
Method and apparatus for runnerless injection-compression molding thermosetting materials |
January 5, 1982 |
| 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 nozzle which is maintained at a |
| 4305862 |
Polymer blends with improved dielectric strength |
December 15, 1981 |
| 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, and (2) polyphenylene sulfide. |
| 4305495 |
Variable lift conveying apparatus |
December 15, 1981 |
| A conveying machine for transporting work pieces through a series of work stations including a plurality of work carriers disposed at spaced intervals on a framework and intermittently movable therealong from one station to the next adjacent station. Each work carrier incorporates a |
| 4304709 |
Polymer blends with improved hydrolytic stability |
December 8, 1981 |
| 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 polymer. |
| 4301014 |
Phosphorus pentasulfide waste water treatment |
November 17, 1981 |
| 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 the sulfur portion to a mixture of |
| 4299671 |
Bath composition and method for electrodepositing cobalt-zinc alloys simulating a chromium plati |
November 10, 1981 |
| A bath composition and method for electrodepositing a cobalt-zinc alloy on a conductive substrate which simulates the appearance of a conventional chromium electrodeposit. The bath comprises an aqueous solution having a pH of about 6 to about 9 containing a controlled ratio of cobalt ion |
| 4299606 |
Recovery of HF and HCl from gaseous mixtures thereof |
November 10, 1981 |
| 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 provide an upward flow of gases th |
| 4297196 |
Stable low voltage microporous diaphragm for electrolytic cells |
October 27, 1981 |
| 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 objectionable voltage increase upon |
| 4296244 |
(3-Trifluoromethylphenyl)-alpha-hydroxyacetic acid and process for preparation |
October 20, 1981 |
| 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 chloride,b. cyanation of the benz |
| 4295951 |
Film-coated cathodes for halate cells |
October 20, 1981 |
| 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, porous film of a substantially |
| 4295899 |
Process for coating iron and steel |
October 20, 1981 |
| A composition and process are useful for imparting a coating to an iron or steel surface which exhibits decorative and improved electrical and corrosion resistance properties. The composition contains an alkali silicate water-glass, an alkali polyphosphate and insoluble chromic oxide |
| 4292146 |
Porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cel |
September 29, 1981 |
| 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 range of 0.2 to 3.5 mm. and at |
| 4290744 |
Apparatus for runnerless injection-compression molding thermosetting materials |
September 22, 1981 |
| 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 stationary platen member, a heated p |
| 4289826 |
Water-borne coating for metal surfaces |
September 15, 1981 |
| Aqueous compositions are employed to form a protective coating on metal surfaces, in particular, ferrous or tin surfaces, and are especially useful for the coating of blackplate or tin-plated cans. The compositions contain, in the form of an aqueous emulsion, an epoxy resin, an alkylated |
| 4289600 |
Microporous membrane materials |
September 15, 1981 |
| 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 lubricant. Such materials are p |
| 4289547 |
Aqueous acidic lubricant coating composition and method |
September 15, 1981 |
| A composition and a method for applying a lubricant coating to clean metal surfaces prior to subjecting them to metal forming operations. The composition comprises a concentrate which is adapted to be diluted with water, if desired, to produce an aqueous acidic operating bath containing |
| 4289546 |
Aqueous acidic lubricant composition and method for coating metals |
September 15, 1981 |
| A composition and a method for applying a lubricant coating to clean metal surfaces prior to subjecting them to metal forming operations. The composition comprises a concentrate which is adapted to be diluted with water, if desired, to produce an aqueous acidic operating bath containing |
| 4289061 |
Device and assembly for mounting parts |
September 15, 1981 |
| 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 in the mounting hole for attachm |
| 4289060 |
Device and assembly for mounting parts |
September 15, 1981 |
| 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 in the mounting hole for attach |
| 4288286 |
Kraft mill recycle process |
September 8, 1981 |
| 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, separating the pulp and bleaching i |
| 4285795 |
Electrolysis apparatus |
August 25, 1981 |
| 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 electrolysis of brine which comprises el |
