Abstract: This invention relates to a process for preparing sulfenyl chloride derivatives of N-phosphonomethylglycinonitriles which are useful as herbicides or as intermediates for the production of thiosulfenamide derivatives of N-phosphonomethylglycinonitriles which are useful as herbicides.
Abstract: This invention relates to unsymmetrical aminosulfinamide derivatives of N-phosphonomethyl-glycine triesters which are useful as herbicides. This invention further relates to herbicidal compositions containing such derivatives and to herbicidal methods employing such compounds and compositions.
Abstract: A catalyst containing tungsten, an alkali or alkaline earth component, and iron on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.
Abstract: A catalyst containing tungsten, potassium, and bismuth on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.
Abstract: It is found that certain novel tetra-substituted urea derivatives have herbicidal properties. The derivatives bear, on the same nitrogen atom a cyanomethyl group and an esterified methylene phosphonic acid group.
Abstract: N-alkoxythione derivatives of N-phosphonomethylglycine are novel compounds with utility as herbicides and in plant growth regulating applications.
Abstract: An improvement in a process for the production of maleic anhydride by the catalytic vapor phase oxidation of a saturated aliphatic hydrocarbon having 4-10 carbon atoms in the presence of a catalyst comprising phosphorus, vanadium and oxygen, wherein long reactor tubes are used in a process employing a high feed concentration and low space velocity so as to minimize air compression.
Abstract: Composites possessing desirable properties are produced from compositions comprising molten elemental sulfur and crystalline phosphate fibers. These composites are useful for the fabrication of various structures, such as tanks, pipes, sheeting, pavement surfaces and the like.
Abstract: Alkylphosphonate diesters and monoesters of N-phosphonomethylglycine are disclosed which are useful as herbicides. This invention further relates to herbicidal compositions containing such alkylphosphonate diesters and monoesters of N-phosphonomethylglycine and to herbicidal methods employing such compounds and compositions.
Abstract: Substituted-butanediperoxoic acids represented by the formula: ##STR1##wherein R is alkyl of 6 to 18 carbon atoms or phenyl are useful oxidizing agents. These substituted-butanediperoxoic acids are useful as bleaching agents and disinfecting agents.
Abstract: Aqueous solutions of aminomethylenephosphonic acid selected from diethylenetriaminepenta(methylenephosphonic acid). diethylenetriaminetetra(methylenephosphonic acid), diethylenetriaminetri(methylenephosphonic acid) and mixtures thereof are stabilized against crystallization of said aminomethylenephosphonic acid by including non-oxidizing mineral acid in such solutions in an amount stoichiometrically equivalent to at least 10% hydrochloric acid by weight of the solution.
Abstract: A process for increasing the color-free shelf life of a crude N-acetyl aminophenol prepared by the acetylation of an aminophenol wherein the N-acetyl aminophenol contains color-forming impurities which are the products of oxidation of the aminophenol and other side reactions. The process comprises dissolving the crude N-acetyl aminophenol in a solvent containing a reducing agent, heating the solution at about the boiling point, crystallizing the N-acetyl aminophenol from the solution, washing the crystalline N-acetyl aminophenol with solvent containing reducing agent and thereafter separating and drying the crystalline N-acetyl aminophenol.
Type:
Grant
Filed:
January 31, 1983
Date of Patent:
October 2, 1984
Assignee:
Monsanto Company
Inventors:
Billy L. Keel, Irvin S. Klaus, Marvin L. Oftedahl
Abstract: Crude vanillin is purified by supercritical extraction of impurities. The process is especially useful in purifying crude vanillin obtained from paper mill waste liquors. Preferred supercritical extraction fluid is CO.sub.2.
Abstract: The invention is a new family of phosphine compounds which can be used to make optically active metal coordination complex catalysts which combine high efficiency with a capability of performing rapidly (high efficiency and rapidly being established from Tables I, II and III as being greater than 75% efficiency and in times of not more than a few hours, preferably less than one hour) in water and thus avoiding solvent recovery and loss problems. The catalysts can be used in some alcoholic mediums as well as in some aqueous mediums. These catalysts are useful in catalytic asymmetric hydrogenation of some olefinic compounds. The new phosphine compounds are made from novel phosphine oxides.
Type:
Grant
Filed:
January 19, 1983
Date of Patent:
August 7, 1984
Assignee:
Monsanto Company
Inventors:
William C. Christopfel, William S. Knowles
Abstract: N-halo, N-cyanomethyl, diaryloxyphosphinylmethylamine compounds are described. These compounds have herbicidal activity and are useful active ingredients in herbicidal formulations.
Abstract: Mixtures of para-nitrochlorobenzene crystals and a liquid, ordinarily comprising the mother liquor of the crystals are continuously separated in one or more cylindrical presses in at least two stages. Reduction of the interstitial space causes the mother liquor to be forced out of the drainage aperatures thus purifying the crystals.
Abstract: The present disclosure relates to a new class of 2-haloacetanilide derivatives which are useful as herbicides. This disclosure further relates to herbicidal compositions containing such 2-haloacetanilides and to herbicidal methods of use employing such compounds and compositions.