Abstract: Diphenyl ether amides having the formula ##STR1## in which X is chloro or methyl; n is zero, one or two; Y is chloro or trifluoromethyl; R.sub.1 is hydrogen, alkyl, lower alkoxy, lower haloalkyl, thio-lower alkyl, or alkenyl; R.sub.2 is hydrogen, lower alkoxy-alkyl or lower alkanoyl; or R.sub.1 and R.sub.2 taken together is ##STR2## The compounds are useful as post-emergence herbicides, particularly as post-emergence, post-flooding herbicides, for use in connection with rice cultivation.
Abstract: Novel insecticidal and/or miticidal compounds have the formula ##STR1## in which R is C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy; R.sub.1 is C.sub.1 -C.sub.3 alkoxy; R.sub.2 and R.sub.3 are C.sub.1 -C.sub.3 alkyl; R.sub.4 is hydrogen or C.sub.1 -C.sub.3 alkyl and R.sub.5 is hydrogen, chloro or C.sub.1 -C.sub.3 alkoxy.
Abstract: An improved process for removal of chloroprene from 1,2-dichloroethane recovered unconverted from the effluent of 1,2-dichloroethane pyrolysis. The chloroprene is chlorinated with chlorine in the presence of o- or m-cresol or a chlorinated derivative thereof, and the excess chlorine from this step is removed by reaction with ethylene.
Abstract: Compounds having the formula ##STR1## in which X is a halogen, R.sub.1 is lower alkyl, R.sub.2 is lower alkyl, and R.sub.3 is lower alkyl, lower alkynyl, or cyano. The compounds have been found to have utility as herbicides, particularly as pre-emergence herbicides.
Abstract: Compounds having the formula ##STR1## in which R is phenyl, phenylthio, phenoxy, or lower aklylthio; R.sub.1 is lower alkoxy; R.sub.2 is lower alkyl or lower alkoxy; R.sub.3 is lower alkyl; and X is sulfur or oxygen. The compounds have utility as insecticides and miticides.The compounds can be prepared through novel intermediates having the formula ##STR2## by a novel process of reacting a methyl ketone oxime with a haloacetyl chloride in the absence of an acid acceptor.
Abstract: Gases containing elemental sulfur are purified therefrom by contact with sulfur trioxide in oleum; additionally the gas may be purified by carbonaceous material. In one embodiment, shown in the drawing, the process is used to remove elemental sulfur from sulfur dioxide produced by reaction of molten sulfur (3) with sulfur trioxide. A portion of the sulfur trioxide is by-passed (6) and introduced into the overhead line (5) of the sulfur dioxide reactor (4). The gases are purified in a second reactor (11) containing a pool of oleum (10).
Type:
Grant
Filed:
July 17, 1978
Date of Patent:
November 20, 1979
Assignee:
Stauffer Chemical Company
Inventors:
Edwin B. Lusk, Douglas C. Riley, Jr., Joseph P. Creadh, III
Abstract: Dialkylaluminum hydrides are produced by subjecting a mixed aluminum alkyl having the formula R.sub.2 AlR' to pyrolysis. R is methyl, ethyl, n-alkyl or an alkyl group which has no hydrogen atoms on the carbon atom .beta. to the aluminum. R' is an .alpha. - or .beta. - branched alkyl group having the formula ##STR1## in which one R" is hydrogen and the other is alkyl and R"' is alkyl. The mixed aluminum alkyl R.sub.2 AlR' can be obtained either by reaction of two aluminum alkyls:2R.sub.3 Al+R'.sub.3 Al.fwdarw.3R.sub.2 AlR'or by reaction of a trialkylaluminum with a dialkylaluminum hydride:2R.sub.3 Al+R'.sub.2 AlH.fwdarw.2R.sub.2 AlR'+R.sub.
Abstract: Novel organoaluminum compounds having the formula ##STR1## in which X is a halogen, Y is an alkyl group having from 1 to 10 carbon atoms, a phenyl group or a halogen, R is an alkyl group having from 2 to 9 carbon atoms, and n is an integer from 1 to 20. These compounds are less viscous and more soluble in hydrocarbon solvents than are corresponding ethylene-based or butadiene-based compounds.The novel compounds are prepared by the reaction of alkylaluminum dihalides or aluminum trihalides with a terminal olefin having from 3 to 10 carbon atoms in the presence of aluminum metal.
Abstract: Compounds having the formula ##STR1## in which one of R.sub.1 and R.sub.2 is C.sub.3 -C.sub.4 alkynoxy or C.sub.3 alkenoxy and the other is hydrogen or methoxy. The compounds have utility as insect control agents, either as insecticides or anti-juvenile hormones.
Abstract: Compounds having the formula ##STR1## in which R.sub.1 is alkyl, lower alkenyl, chloro-lower alkyl, lower cycloalkyl, lower alkoxy, thio-lower alkyl, or ##STR2## R.sub.2 is hydrogen, lower alkoxyalkyl or lower alkanoyl; R.sub.3 and R.sub.4 are independently hydrogen, lower alkyl or lower alkoxy; X and Y are independently chloro, fluoro or bromo; Z is hydrogen, methyl, dimethyl, or one methyl and one chloro substituent; and n is 0 or 1. The compounds have utility as herbicides, particularly as post-emergence herbicides.
Abstract: Compounds having the formula ##STR1## in which R is phenyl, phenylthio, phenoxy, or lower alkylthio; R.sub.1 is lower alkoxy; R.sub.2 is lower alkyl or lower alkoxy; R.sub.3 is lower alkyl; and X is sulfur or oxygen. The compounds have utility as insecticides and miticides. The compounds can be prepared through novel intermediates having the formula ##STR2## BY A NOVEL PROCESS OF REACTING A METHYL KETONE OXIME WITH A HALOACETYL CHLORIDE IN THE ABSENCE OF AN ACID ACCEPTOR.
Abstract: 1,3-dichloroacetone oxime is prepared from 1,3-dichloropropanone by reaction with a hydroxylamine salt in a strongly acidic medium in the presence of a base selected from the group consisting of tertiary amines, lower alkyl amides, alkali metal bicarbonates, alkali metal carbonates and alkaline earth metal carbonates. 1,3-dichloroacetone oxime acetate is advantageously prepared by reaction of the oxime with acetic anhydride. The acetate is obtained in high purity.
Type:
Grant
Filed:
December 21, 1976
Date of Patent:
December 5, 1978
Assignee:
Stauffer Chemical Company
Inventors:
Kent E. Matsumoto, Jimmy H. Chan, Don R. Baker
Abstract: Oxychlorination of ethylene is carried out using a three-reactor system containing beds of a catalyst comprising a spherical, high-surface area activated alumina impregnated with cupric chloride and potassium chloride. In the first two reactors, the catalyst bed is divided into two sections, with a more active catalyst in the lower section than in the upper. The catalyst is substantially undiluted with inert particles.A new catalyst for such a process is also provided.
Type:
Grant
Filed:
May 14, 1976
Date of Patent:
October 31, 1978
Assignee:
Stauffer Chemical Company
Inventors:
Ramsey G. Campbell, Elliott P. Doane, M. Henry Heines, Joseph S. Naworski, Harvey J. Vogt
Abstract: An improved process for producing alkyl, lower cycloalkyl, lower cycloalkylmethyl, lower alkenyl, phenyl, benzyl, chloro-substituted phenyl and certain haloalkyl chlorothioformates by the reaction of the corresponding mercaptan with phosgene. The process is conducted in two stages, both occurring in a continuous liquid phase, in the presence of an activated carbon catalyst. Production of by-product disulfide is minimized and overall capacity can be increased.
Abstract: Compounds having the formula ##STR1## in which X is a halogen, R.sub.1 is lower alkyl, R.sub.2 is lower alkyl, and R.sub.3 is lower alkyl, lower alkynyl, or cyano. The compounds have been found to have utility as herbicides, particularly as pre-emergence herbicides.
Abstract: A mixture of cis and trans isomers of S-isopropyl-1-(5-ethyl-2-methylpiperidinecarbothioate) has been found to have improved herbicidal properties in contrast to the trans isomer alone. Preferably the mixture contains at least about 20%, most preferably between about 60 and about 65%, of the cis isomer.The S-isopropyl-1-(5-ethyl-2-methylpiperidinecarbothioate) having a desired amount of cis isomer can be produced by a two-step process comprising hydrogenation of 2-methyl-5-ethyl pyridine using a catalyst comprising rhodium supported on activated carbon to produce 2-methyl-5-ethyl piperidine and reacting the piperidine with isopropyl chlorothiolformate.
Abstract: New compounds having the formula ##STR1## in which R is alkyl, phenyl, benzyl or p-chlorophenyl and R.sub.1 and R.sub.2 are hydrogen, halo, trifluoromethyl, lower alkyl, nitro, cyano or thiocyano. The compounds are useful as biocides, particularly as bactericides against Staphylococcus aureus.
Abstract: Compounds having the formula ##STR1## in which R.sub.1 is lower alkyl or lower alkoxy, R.sub.2 is lower alkoxy or methylthio-substituted lower alkoxy, and R.sub.3 is ##STR2## R.sub.4 and R.sub.5 are lower alkyl, m is 1 or 2 and n is 0 or an integer from 1 to 4. The compounds have utility as insecticides and acaricides.
Abstract: Novel insecticidal compounds have the general structural formula ##STR1## in which each of R and R.sub.2 is an alkyl or alkoxy group and each R.sub.1 and R.sub.3 is an alkoxy group.