Patents Assigned to Stauffer Chemical Company
  • Patent number: 4723986
    Abstract: An oxazolidine having the formula ##STR1## wherein X, Y, X' and Y' are the same or different and are selected from the group consisting of hydrogen, chloro, bromo, fluoro, trifluoromethyl, m-trifluoromethylphenoxy, methyl, methylthio, methoxy, cyano, nitro and methylsulfonyl; and R is selected from the group consisting of methyl ethyl, chloromethyl and hydroxy methyl.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: February 9, 1988
    Assignee: Stauffer Chemical Company
    Inventor: Eugene G. Teach
  • Patent number: 4724056
    Abstract: A pollution-free process for forming trialkyl phosphite by reaction of phosphorus trichloride with alcohol in the presence of a tertiary amine acid acceptor is described in which by-product hydrochloride salt of the acid acceptor is electrolyzed to regenerate the tertiary amine for recycle for further use in reacting additional phosphorus trichloride with alcohol to form additional trialkyl phosphite product.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: February 9, 1988
    Assignee: Stauffer Chemical Company
    Inventor: Elliott P. Doane
  • Patent number: 4724265
    Abstract: Liquid mixed triaryl thiophosphate mixtures can be prepared by forming a mixture of phenol and substituted phenols, forming a phosphite from that mixture and sulfurizing the phosphite, washing the thiophosphate with aqueous base, and drying the so washed thiophosphate under mild conditions. The products are liquid while containing at least 25 percent symmetrical triaryl thiophosphate. Colorless and odorless products are prepared.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: February 9, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Fred Jaffe, Alan M. Aaronson
  • Patent number: 4721659
    Abstract: A process for applying an aqueous mixture of a magnesium phosphate cementitious material to a base material in which the resulting bond between the materials is improved. In this method the base material is coated with a passivating agent capable of reducing the pH of the surface of the base material prior to applying the aqueous mixture of magnesium phosphate cementitious material. The base material can be a hydraulic cementitious material, e.g., Portland cement. The cementitious material is magnesium phosphate quick-setting cement. Preferred passivating agents can be aluminum acid phosphate, magnesium acid phosphate, aluminum sulfate, ammonium polyphosphate, phosphoric acid, an activator and mixtures thereof. The resulting laminated structure composed of the base material, the coating and the magnesium phosphate cementitious material is also disclosed.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: January 26, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Robert H. Tieckelmann, Fawzy G. Sherif
  • Patent number: 4721822
    Abstract: Liquid para-toluenesulfonyl chloride is reacted with chlorine gas at elevated temperatures in the presence of a catalytic amount of a Lewis acid catalyst, preferably antimony trichloride. Sulfuric acid is added then the reaction mixture is heated and subsequently cooled to about room temperature. Ammonium hydroxide is added then the reaction mixture is distilled to yield a substantially pure 2,6-dichlorotoluene.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: January 26, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Andrea Leone-Bay, Peter E. Timony, Laurel Glaser
  • Patent number: 4720562
    Abstract: Compositions which comprise a complex of:(a) a titanium-containing material having the formula ##STR1## in which X.sub.1 is cyclopentadienyl, chlorine, bromine or C.sub.1 -C.sub.6 alkoxy, X.sub.2 and X.sub.3 are chlorine, bromine, or C.sub.1 -C.sub.6 alkoxy; Y.sub.1 and Y.sub.2 are chlorine or bromine; and z is hydrogen (preferably) or C.sub.1 -C.sub.10 hydrocarbyl are novel reagents for methylenation or analogous reactions with a carbonyl group; and(b) a complexing agent selected from the group consisting of:(i) ethers having the formula R.sub.1 OR.sub.2 in which R.sub.1 and R.sub.2 are C.sub.1 -C.sub.4 alkyl;(ii) cyclic ethers having the formula ##STR2## in which n is an integer from 4 to 7; and (iii) tertiary amines.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: January 19, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Dennis B. Malpass, Andrzej M. Piotrowski
  • Patent number: 4717708
    Abstract: The invention is directed to inorganic oxide aerogels and the method of preparing such inorganic oxide aerogels which are characterized by high surface areas and high pore volume. The preparation comprises dissolving the inorganic alkoxide or metal salt in a solvent optionally containing a catalytic amount of an acid or base and hydrolyzing to form a gelled or colloidal material which is further treated with a fluid at or above its critical temperature and pressure to extract the solvent which is then dried to remove surface water.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: January 5, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Chung-Ping Cheng, Paul A. Iacobucci
  • Patent number: 4717772
    Abstract: The color of alkyl zirconate compounds that have become discolored is improved by treating the zirconate with a nitrogen oxide oxidant, such as nitric acid, to achieve the desired color improvement.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: January 5, 1988
    Assignee: Stauffer Chemical Company
    Inventor: Fritzbert Edouard
  • Patent number: 4717413
    Abstract: A compound having the following structural formula ##STR1## wherein R is nitro or hydrogen; R.sup.1 is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.3 alkylthio; and R.sup.2 is hydrogen or chlorine and X is chlorine, bromine, or iodine.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: January 5, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Don R. Baker, Teresa M. Tam Chow
  • Patent number: 4715300
    Abstract: A method of disposing of acid-dissolvable materials (e.g., rags) which, optionally, are impregnated with a waste material (e.g., solvents, oils, paints, and the like) is described. The first step of the procedure involves the dissolving of the acid-dissolvable materials in a strong mineral acid to form an acid solution comprising the dissolved material, and, optionally, waste which has been impregnated thereon. This acid solution is then fed to the incinerator for incineration, preferably to the incinerator of an acid regeneration plant.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: December 29, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Rocky C. Costello, Robert L. Dixon
  • Patent number: 4714493
    Abstract: This invention relates to the herbicide N,N'-(N''-isopropylcarbamyl,N'''-isopropylcarbamyl)-S-ethylisothiourea, its use and process for making the same.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: December 22, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Marcelo Kogan, Stephen E. Dinizo, Llewellyn W. Fancher
  • Patent number: 4714724
    Abstract: Dibromoneopentyl phosphate melamine salt is a novel flame retardant suitable for plastics, textiles and fabric backcoatings. The dibromoneopentyl phosphate melamine salt is prepared by the reaction of dibromoneopentyl phosphoric acid with melamine.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 22, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Alfred K. Jung, Joseph Silberberg, Edward D. Weil
  • Patent number: 4714491
    Abstract: As compounds, diphenyl ether derivatives of the formula ##STR1## wherein X, Y and Z are the same or different and are selected from the group consisting of trifluoromethyl, halogen and hydrogen, and wherein R is selected from those having the formula ##STR2## in which R' and R" are selected from the group consisting of lower alkyl groups having from 1 to 3 carbon atoms, and agriculturally acceptable salts thereof.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: December 22, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Michael P. Prisbylla
  • Patent number: 4713484
    Abstract: A process for preparing carboxylic acid salts by the reaction of carbon monoxide with substituted or unsubstituted aromatic halides or an aliphatic organic halide. The process comprises the catalytic single phase carbonylation of the halide utilizing in addition to carbon monoxide, a palladium catalyst, an excess of tertiary phosphine, optionally an amine compound, with an alkali metal or alkaline earth metal base added during the reaction to form the salt.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Ronald A. Epstein
  • Patent number: 4713192
    Abstract: High phosphorus polyphosphides, namely MP.sub.x, where M is an alkali metal (Li, Na, K, Rb, and Cs) or metals mimicking the bonding behavior of an alkali metal, and where x=7 to 15 or very much greater than 15 (new forms of phosphorus) are useful semiconductors in their crystalline, polycrystalline and amorphous forms (boules and films). MP.sub.15 appears to have the best properties and KP.sub.15 is the easier to synthesize. P may include other pnictides as well as other trivalent atomic species. Resistance lowering may be accomplished by doping with Ni, Fe, Cr, and other metals having occupied d or f outer electronic levels; or by incorporation of As and other pnictides. Rectifying Schottky junction devices doped with Ni and employing Ni as a back contact comprise Cu, Al, Mg, Ni, Au, Ag, and Ti as junction forming top contacts. Photovoltaic, photoresistive, and photoluminescent devices are also disclosed. All semiconductor applications appear feasible.
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Christian G. Michel, Rozalie Schachter, Mark A. Kuck, John A. Baumann, Paul M. Raccah
  • Patent number: 4713470
    Abstract: There is disclosed a process for the racemization of amino acids and derivatives thereof. The racemization process of the present invention uses an aromatic aldehyde-containing polymer made from the reaction of a hydroxy-aromatic aldehyde with a chloromethylated vinylbenzene polymer under reaction conditions to form an aromatic aldehyde-containing polymer wherein the aldehydic moiety is linked to the polymer through an ether linkage. There is also disclosed a process for the production of the racemization catalyst. Another embodiment of the invention comprises a process for the promotion of the racemization reaction wherein a tertiary amine-containing resin is used as a promoting agent.
    Type: Grant
    Filed: May 22, 1985
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Stanley B. Mirviss
  • Patent number: 4713119
    Abstract: Alkali metal aluminum silicate scale deposits are removed from surfaces of chemical processing equipment by alternating treatments with acidic and basic solutions, with optional rinsing of the equipment between treatments.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Jonathan P. Earhart, John A. Kostecki, Adrian C. McNutt
  • Patent number: 4713471
    Abstract: A method of producing benzoyloxyphenoxy pentanoic acid esters comprising the steps of: (a) reacting a compound of the formula ##STR1## wherein A is as defined with a compound of the formula ##STR2## wherein X is as defined, in the presence of a base selected from carbonate salts of alkaline earth or alkali metals, a catalyst and a ketonic solvent to produce a 3-(4-benzyloxyphenoxy)-2-butanone; and (b) reacting said 3-(4-benzyloxyphenoxy)-2-butanone with a dialkyl carbonate of the formula (RO).sub.2 CO, wherein R is an alkyl group having from 1 to 4 carbon atoms, in the presence of a suitable base and an organic solvent, to form alkyl 4-(4-benzyloxyphenoxy)-3-oxopentanoate.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Richard W. Brown, Richard D. Gless, Jr.
  • Patent number: 4713467
    Abstract: Isothiocyanates are formed by oxidizing, with gaseous oxygen or air, in the presence of a metal oxidation catalyst a dithiocarbamate with appropriate control of the pH of the reaction medium to suppress the formation of by-products. Optionally a quaternary ammonium halide catalyst can be used to increase product yield.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Jeffrey E. Telschow, Danielle A. Bright
  • Patent number: 4711962
    Abstract: Novel processes are disclosed for selectively preparing a mixture of certain asymmetric imidazole derivatives and their corresponding regioisomers. The process involves reacting a tautomeric mixture of two precursor compounds with a critical base in the presence of a critical solvent, prior to the desired N-substitution reaction. In general, the base is a hydride of an alkali metal or an alkaline earth metal, or mixtures thereof. Sodium hydride is particularly suitable. The solvents are all non-polar.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: December 8, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Andrea Leone-Bay