Patents Examined by W. B. Lone
  • Preparation of 1,2-dihydroxy compounds
    Patent number: 3959393
    Abstract: Method of preparing a 1,2-dihydroxy compound of the formula: ##SPC1##Where R is hydrogen or alkyl comprising contacting a naphthalene compound of the formula: ##SPC2##Where R is as heretofore defined with ozone, alkanoic acid and a mineral acid and hydrolyzing the resultant intermediates to form said 1,2-dihydroxy compound.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: May 25, 1976
    Assignee: Texaco Inc.
    Inventor: Richard D. Smetana
  • Recovery of polymerization inhibitor
    Patent number: 3959395
    Abstract: A process is provided for recovery and re-use of dinitrophenols employed as inhibitors of polymerization in the distillation and purification of styrene. The styrene still residues commonly referred to as tar or tars are treated with an aqueous hydroxide at a controlled pH, the phases are separated, the aqueous phase is treated with an acid and an organic solvent at a controlled pH and the resulting organic phase is recycled to a suitable point in the styrene purification system. The recycled solution is a more effective inhibitor than the dinitrophenol originally employed.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: May 25, 1976
    Assignee: Monsanto Company
    Inventors: Thomas D. Higgins, Jr., Raymond A. Newsom
  • Process for the oxidation of cyclohexane
    Patent number: 3957876
    Abstract: Preparation of cyclohexyl hydroperoxide substantially free of other peroxides by oxidation of cyclohexane containing a cyclohexane soluble cobalt salt in a zoned oxidation process in which an oxygen containing gas is fed to each zone in the oxidation section in an amount in excess of that which will react under the conditions of that zone.
    Type: Grant
    Filed: May 30, 1973
    Date of Patent: May 18, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Morris Rapoport, Jesse Oris White
  • Ketone peroxide production
    Patent number: 3957884
    Abstract: Safe ketone peroxide compositions are provided utilizing a novel solvent system which boils smoothly over a wide range of temperatures. In addition, ketone peroxide compositions are prepared by reacting an excess of the ketone with hydrogen peroxide in a homogeneous system, followed by stripping excess ketone and water from the product.
    Type: Grant
    Filed: September 12, 1973
    Date of Patent: May 18, 1976
    Assignee: Chinook Chemicals Corporation Limited
    Inventors: Douglas M. Bisset, Colin Mercer
  • Organic peroxides derived from unsaturated compounds
    Patent number: 3956319
    Abstract: New organic peroxides having the formula ##EQU1## may be prepared by reacting a monohydroperoxide selected from R.sub.5 OOH and R.sub.6 OOH with an unsaturated carbonyl compound having the formula ##EQU2## the reaction being carried out in the presence of an acid catalyst at a temperature between about -30.degree.C and +80.degree.C, the molar ratio of the carbonyl compound to the hydroperoxide being between about 1:2 and 1:10. The new organic peroxides are particularly useful for crosslinking plastomers, vulcanizing elastomers, and as initiators for radical polymerizations.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: May 11, 1976
    Assignee: The B. F. Goodrich Company
    Inventors: Egeo Sacrini, Claudio Cavallotti
  • Safe diacyl peroxide solution compositions
    Patent number: 3956396
    Abstract: A safe peroxide solution composition consisting essentially of a diacyl peroxide having 1-5 carbon atoms in each aliphatic group and an aliphatic hydrocarbon, ketone, ester, ether, or alcohol characterized by a vapor pressure substantially that of the peroxide. Example: Equal parts by weight of diacetyl peroxide and ethyl butyl ketone.
    Type: Grant
    Filed: March 21, 1969
    Date of Patent: May 11, 1976
    Assignee: Pennwalt Corporation
    Inventors: Orville L. Mageli, David C. Noller, Wilbur H. McKellin
  • Process for extracting cycloaliphatic hydroperoxides
    Patent number: 3956397
    Abstract: Cycloaliphatic hydroperoxides are extracted from the reaction mixtures obtained by oxidising the corresponding cycloaliphatic hydrocarbons with the aid of a polar aprotic solvent which is not miscible with the hydrocarbon, said solvent being a polymethylenesulphone or an alkylene glycol carbonate, the alkylene portion containing 2 to 4 carbon atoms.
    Type: Grant
    Filed: May 31, 1974
    Date of Patent: May 11, 1976
    Assignee: Rhone-Poulenc Industries
    Inventors: Lucien Billet, Michel Jouffret
  • Bis-monoperoxyacetals and -ketals
    Patent number: 3956398
    Abstract: Bis-monoperoxyacetals and bis-monoperoxyketals having the formula ##EQU1## wherein R is selected from the group consisting of C.sub.4 -C.sub.12 tertiary alkyl and C.sub.9 -C.sub.12 tertiary aralkyl and R.sub.1 is selected from the group consisting of hydrogen and C.sub.1 -C.sub.12 alkyl, are effective crosslinking agents for polymers at relatively low cure temperatures.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: May 11, 1976
    Assignee: Hercules Incorporated
    Inventor: Frederick G. Schappell
  • Process for producing hydroperoxides
    Patent number: 3954879
    Abstract: A process for producing a hydroperoxide in highly concentrated form by oxidation of its corresponding liquid hydrocarbon with oxygen or an oxygen-containing gas while simultaneously subjecting the liquid reaction mixture to a carrier gas distillation to remove unreacted hydrocarbon with the carrier gas while withdrawing a portion of the liquid reaction mixture which is enriched in the hydroperoxide.
    Type: Grant
    Filed: December 4, 1972
    Date of Patent: May 4, 1976
    Assignee: Akzona Incorporated
    Inventors: Arno Wegerhoff, Dieter Frank
  • Process for the purification of para-nitrophenol
    Patent number: 3954892
    Abstract: In the nitration of phenol with nitric acid, decantation of the residual acid, and steam distillation of ortho-nitrophenol to leave an aqueous distillation residue of para-nitrophenol, a cleaner purer crystalline para-nitrophenol product is obtained by cooling the hot distillation residue when it contains at least 0.5% of sodium bisulphite and is at pH 5.4 to 6.4.
    Type: Grant
    Filed: March 13, 1973
    Date of Patent: May 4, 1976
    Assignee: Rhone-Poulenc, S.A.
    Inventor: Andre Perrin
  • Method for producing high-purity dicumyl peroxide
    Patent number: 3954880
    Abstract: High-purity dicumyl peroxide is obtained by mixing a melted crude dicumyl peroxide containing not less than 50% of dicumyl peroxide with an aqueous solution of surfactant, emulsifying the resulting mixture, and cooling the emulsion to a temperature lower than the temperature for solidifying dicumyl peroxide.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: May 4, 1976
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Masaharu Nakayama, Isao Hayashi, Makoto Muraguchi
  • Process for the continuous production of dihydroperoxides
    Patent number: 3953521
    Abstract: Meta-and/or paradiisopropylbenzene dihydroperoxides are continuously produced by oxidizing meta-and/or paradiisopropylbenzenes in liquid phase through contact with oxygen or a gas containing oxygen, while keeping the concentration of meta-and/or paradiisopropylbenzene monohydroperoxides of the oxidation product solution in a range of 20 to 40% by weight.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: April 27, 1976
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hideaki Suda, Iwao Dohgane, Takashi Chinuki, Kenji Tanimoto, Hirokazu Hosaka, Yukimichi Nakao, Yuji Ueda, Seiya Imada, Hideki Yanagihara, Kunihiko Tanaka
  • Alkylhydroquinone and process for producing the same
    Patent number: 3953531
    Abstract: 2,5-BIS-(1',1'-Dimethylbutyl)hydroquinone and a process for the production thereof which comprises reacting hydroquinone with 2-methyl-1-pentene.
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: April 27, 1976
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Reiichi Ohi
  • Process for making o- and p-chlorophenols
    Patent number: 3953530
    Abstract: Disclosed is a process for making ortho- and para-chlorophenols by treating alpha-cumylchloride with an aqueous hydrogen peroxide solution. The two products can be separated by distillation.
    Type: Grant
    Filed: January 10, 1972
    Date of Patent: April 27, 1976
    Assignee: S. A. Texaco Belgium N.V.
    Inventors: Lothar G. Dulog, Sylvain A. R. Dewaele
  • Process for ortho-alkylation of phenol compounds
    Patent number: 3953529
    Abstract: A process for alkylating the ortho-position of a phenol compound which comprises bringing a phenol compound containing at least one hydrogen atom at its ortho-position and an alcohol into contact with a catalyst in the gaseous phase, said catalyst being selected from the group consisting ofA. a mixture of iron oxide and silica in which the atomic ratio of Fe to Si is 100 : 0.03 - 200, andB. a mixture of iron oxide, silica and chromium oxide in which the atomic ratio of Fe to Si to Cr is 100 : 0.1 - 5 : 0.1 - 5.
    Type: Grant
    Filed: June 4, 1974
    Date of Patent: April 27, 1976
    Assignee: Mitsubishi Gas Chemical Co. Inc.
    Inventors: Eiichi Yonemitsu, Shizuo Togo, Kenichiro Hashimoto, Muneo Ito, Chiharu Nishizawa, Noboru Hara
  • Di- and tetra-(peroxy)ketals and acetals and improved curing and polymerizing process employing same
    Patent number: 3950432
    Abstract: Compounds of the general formula ##EQU1## WHERE M IS 1 OR 2 [E.G., 2,2-DI-(T-OCTYLPEROXY) PROPANE]; AND IMPROVED PROCESSES USING THESE COMPOUNDS AS INITIATORS FOR THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS (SUCH AS STYRENE) AND AS CURING CATALYSTS FOR CURING UNSATURATED POLYESTER RESIN COMPOSITIONS.
    Type: Grant
    Filed: April 10, 1972
    Date of Patent: April 13, 1976
    Assignee: Pennwalt Corporation
    Inventor: Jose Sanchez
  • Process for removing impurities in an oxidation mixture
    Patent number: 3950431
    Abstract: Impurities, that is, by-products, in an oxidation product solution obtained by oxidation of diisopropylbenzene by molecular oxygen or in the oxidation product solution freed from diisopropylbenzene dihydroperoxide, are removed by extracting the by-products such as carbinols, ketones and styrenes from the solution with a mixture of an aqueous alkaline solution and at least one of alcohols having 1 to 3 carbon atoms such as methanol, ethanol, and isopropanol, as an extracting reagent at a temperature of 20.degree. to 80.degree.C.
    Type: Grant
    Filed: September 20, 1973
    Date of Patent: April 13, 1976
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hideaki Suda, Iwao Dohgane, Takashi Chinuki, Kenji Tanimoto, Hirokazu Hosaka, Yukimichi Nakao, Yuji Ueda, Seiya Imada, Hideki Yanagihara, Kunihiko Tanaka
  • Method for manufacture of dihydric phenols
    Patent number: 3950437
    Abstract: Dihydric phenols are produced preferentially in high yields by having monohydric phenols or phenyl ethers oxidized by an organic peracid using, as a catalyst, at least one member selected from the group consisting of peracid stabilizers, polycarboxylic acids containing N or OH and possessed of a structure from which heavy metal ion-chelating property can theoretically be assumed, magnesium salts, sodium salts and potassium salts thereof, sodium salt, potassium salt and lower alkyl esters of phosphoric acid, and sodium salt and lower alkyl esters of pyrophosphoric acid.
    Type: Grant
    Filed: December 14, 1973
    Date of Patent: April 13, 1976
    Assignee: Oxirane Chemical Co.
    Inventors: Juichi Imamura, Moriyasu Ando, Kazuo Sasaki, Takumi Iio
  • Production of hydroperoxides
    Patent number: 3949003
    Abstract: Method for the production of hydroperoxides of hydrocarbons having no aliphatic or cycloaliphatic tertiary carbon atoms wherein such hydrocarbons are oxidized in the liquid phase with molecular oxygen in the presence of a tertiary alcohol and a tertiary hydroperoxide. This method gives high hydroperoxide selectivities at high conversion levels and at high conversion rates.
    Type: Grant
    Filed: March 16, 1971
    Date of Patent: April 6, 1976
    Inventors: John G. Zajacek, Francis J. Hilbert
  • Hydroperoxide production
    Patent number: 3949004
    Abstract: Method for the production of hydroperoxides of hydrocarbon having no aliphatic or cycloaliphatic tertiary carbon atoms, wherein such hydrocarbons are oxidized in the liquid phase with molecular oxygen in the presence of a stabilizing agent. This method gives high hydroperoxide selectivities at high conversion levels.
    Type: Grant
    Filed: October 23, 1973
    Date of Patent: April 6, 1976
    Assignee: Atlantic Richfield Company
    Inventors: Harold A. Sorgenti, Stephen N. Rudnick