Patents Assigned to Stauffer Chemical Company
  • Method of controlling undesirable vegetation with certain 2-phenylacetyl-1,3,5-cyclohexanetriones
    Patent number: 4816059
    Abstract: Compounds of the formula ##STR1## wherein R is hydrogen; halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.m -- wherein m is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are methyl or ethyl;R.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.sub.4 alkyl; (11) R.sup.e C(O)-- wherein R.sup.e is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or (12) --SO.sub.2 NR.sup.c R.sup.d wherein R.sup.c and R.sup.d are defined; and (13) --N(R.sup.c)C(O)R.sup.d wherein R.sup.c and R.sup.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: March 28, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Charles G. Carter
  • Soda ash manufacture
    Patent number: 4814151
    Abstract: An improved process for the manufacture of soda ash from trona by the sodium carbonate monohydrate method utilizing an activated carbon treatment of evaporator fines bleed.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: March 21, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Alan H. Benke
  • Production of fermented vegetable oil products containing an emulsifier
    Patent number: 4810507
    Abstract: A vegetable oil and mineral salts broth is fermented with an organism to produce a vegetable oil product containing an emulsifier. Fermentation is carried out by forming a fermentation broth of vegetable oil and mineral salts, and optionally yeast extract and then fermenting the broth with Candia Lipolytica. The resultant fermented vegetable oil product is used as an emulsifying agent in the food industry.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: March 7, 1989
    Assignee: Stauffer Chemical Company
    Inventors: Robert D. Schwartz, Thomas M. Anderson, Enrique Fernandez
  • Certain 4-oxo-3-benzoylvalerolactones and thiolactones
    Patent number: 4808733
    Abstract: An intermediate compound having the structural formula ##STR1## wherein X is oxygen or sulfur;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n --wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.1 and R.sup.3 together are alkylene having 2-5 cation atoms; orR.sup.2 and R.sup.4 together are alkylene having 2-5 carbon atoms; andR.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifuoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n --wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.C R.sup.d wherein R.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: February 28, 1989
    Assignee: Stauffer Chemical Company
    Inventors: Christopher G. Knudsen, William J. Michaely, Donald R. James, Hsiao-Ling M. Chin
  • Certain 3-oxo-4-(substituted oxy or substituted thio)cyclohex-1-enyl-2-substituted benzoate intermediates
    Patent number: 4808338
    Abstract: Intermediate compounds of the formula ##STR1## wherein X is oxy, thio, sulfinyl or sulfonyl; R is halogen; C.sub.1 C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; trifluoromethoxy; difluoromethoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl; trifluoromethyl or difluoromethyl; R.sup.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, or phenyl; R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.1 and R.sup.2 together are C.sub.2 -C.sub.5 alkylene; R.sup.3 hydrogen, C.sub.1 C.sub.4 alkyl, or phenyl with the proviso that R.sup.1 and R.sup.3 are not both phenyl; R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.6 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, or phenyl; R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: February 28, 1989
    Assignee: Stauffer Chemical Company
    Inventor: David L. Lee
  • Certain 3-benzoyl-4-oxolactams
    Patent number: 4808720
    Abstract: Compounds having the formula ##STR1## wherein R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl; R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.1 and R.sup.2 together are alkylene having 2-5 carbon atoms; R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.3 and R.sup.4 together are carbonyl; and R.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethyoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.m -- wherein m is the integer 0, 1 or 2; and R.sup.b is (a) C.sub. 1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.sup.d independently are hydrogen or C.sub.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: February 28, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Jeff K. Curtis
  • Certain 2-(2-substituted benzoyl)-4-(substituted oxy or substituted thio)-1,3-cyclohexanediones
    Patent number: 4808214
    Abstract: Compounds of the formula ##STR1## wherein X is oxy, thio, sulfinyl or sulfonyl;R is hydrogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; trifluoromethyoxy; difluoromethoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; R.sup.a SO.sub.n --wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl, trifluoromethyl or difluoromethyl;R.sup.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, phenyl or substituted phenyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are C.sub.2 -C.sub.5 alkylene;R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, phenyl or substituted phenyl with the proviso that R.sup.1 and R.sup.3 are not both phenyl or substitute phenyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.5 is hydrogen, or C.sub.1 -C.sub.4 alkyl;R.sup.6 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, or phenyl;R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: February 28, 1989
    Assignee: Stauffer Chemical Company
    Inventor: David L. Lee
  • Preparation of activators for fast-setting cements
    Patent number: 4806165
    Abstract: A particulate solid activator comprising a porous material containing absorbed P.sub.2 O.sub.5 values can be prepared by a process which comprises spray drying a slurry of a liquid P.sub.2 O.sub.5 material and the porous material to obtain the particulate solid. The P.sub.2 O.sub.5 material can be a mixture of a phosphoric acid and an ammonium phosphate solution. The porous material can be diatomaceous earth. The resulting particulate solid activator can be dry blended with a magnesium-containing compound, e.g. MgO, and an optional aggregate to form a magnesium phosphate fast-setting cement mixture. This mixture reacts in the presence of an aqueous component at ambient temperature to form a monolithic solid.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: February 21, 1989
    Assignee: Stauffer Chemical Company
    Inventors: Elliot I. Band, Fawzy G. Sherif
  • Certain 2-(2-substituted benzoyl)-1,3-cyclohexanediones
    Patent number: 4806146
    Abstract: Compounds of the formula ##STR1## wherein R is halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, cyano, nitro, S(O).sub.n R wherein R is C.sub.1 -C.sub.4 alkyl and n is the integer 0, 1 or 2; and R.sup.2 through R.sup.8 are hydrogen or certain substituents, their salts, herbicidal compositions containing the compound or salts and the herbicidal use thereof.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: February 21, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Charles G. Carter
  • Certain 2-(substituted benzoyl)-5-(substituted or unsubstituted phenyl)-1,3-cyclohexanediones as herbicides
    Patent number: 4806152
    Abstract: Compounds of the formula ##STR1## wherein R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; trifluoromethoxy or difluoromethoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl, trifluoromethyl or difluoromethyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are C.sub.2 -C.sub.5 alkylene;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together are C.sub.2 -C.sub.5 alkylene;R.sup.5, R.sup.6, R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: February 21, 1989
    Assignee: Stauffer Chemical Company
    Inventors: David L. Lee, William J. Michaely
  • Process for preparation of iminooxazolidines
    Patent number: 4806653
    Abstract: A process of the preparation of iminooxazolidines which comprises (a) reacting a urea alcohol of the formula ##STR1## X, Y, n and R are as defined, with a dehydrating agent to form an intermediate salt compound of the formula ##STR2## wherein X, Y, n and R are as previously defined and X.degree.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: February 21, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Raymond A. Felix
  • Certain 2-(2-substituted benzoyl)-1,3,5-cyclohexanetriones
    Patent number: 4797150
    Abstract: Compounds of the formula ##STR1## wherein R.sup.60 is halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, cyano, nitro, S(O).sub.n R wherein R is C.sub.1 -C.sub.4 alkyl and n is the integer 0, 1 or 2; and R.sup.61 through R.sup.66 are hydrogen or certain substituents, their salts, herbicidal compositions containing the compound or salts and the herbicidal use thereof.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: January 10, 1989
    Assignee: Stauffer Chemical Company
    Inventor: Charles G. Carter
  • Herbicidal method and composition utilizing certain 5-(2-substituted benzoyl)-barbituric acids
    Patent number: 4797147
    Abstract: Herbicidal compositions and method of controlling undesirable vegetation utilizing compounds of the formula ##STR1## wherein R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.m -- wherein m is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.2 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.2 alkyl; andR.sup.3 and R.sup.4 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.sub.4 alkyl; (11) R.sup.e C(O)-- wherein R.sup.e is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or (12) --SO.sub.2 NR.sup.c R.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: January 10, 1989
    Assignee: Stauffer Chemical Company
    Inventors: David L. Lee, Charles G. Carter
  • 2-(Substituted benzoyl)-4-(substituted or unsubstituted phenyl)-1,3-cyclohexanediones as herbicides
    Patent number: 4795488
    Abstract: Compounds of the formula ##STR1## wherein R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; trifluoromethoxy or difluoromethoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; R.sup.a SO.sub.n --wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl, trifluoromethyl or difluoromethyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are C.sub.2 -C.sub.5 alkylene;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together are C.sub.2 -C.sub.5 alkylene;R.sup.5, R.sup.6, R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: January 3, 1989
    Assignee: Stauffer Chemical Company
    Inventor: David L. Lee
  • Certain 1,3-diphenyl-1,3-propanediones
    Patent number: 4795489
    Abstract: Compounds of the formula ##STR1## wherein R is hydrogen; halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy;R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.sub.4 alkyl; (11) R.sup.e C(O)-- wherein R.sup.e is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or (12) --SO.sub.2 NR.sup.c R.sup.d wherein R.sup.c and R.sup.d are as defined; and (13) --N(R.sup.c)C(O)R.sup.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: January 3, 1989
    Assignee: Stauffer Chemical Company
    Inventor: David L. Lee
  • Process for acidifying ground meats
    Patent number: 4788070
    Abstract: Meats having the necessary low-interior-acid level for acid foods and which are more natural, better tasting, and have a better texture than that presently obtained using the encapsulated-acid process can be prepared by a process including the steps of salting a meat emulsion to extract salt-soluble protein for binding, extruding the emulsion into a hot salt solution, cooking with agitation in the hot salt solution to heat set the exterior of the protein, followed by further treating of the meat in an acid solution containing salt to reduce the pH of the meat particles. The use of expensive fat-coated acids is unnecessary to obtain an acidified meat product.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: November 29, 1988
    Assignee: Stauffer Chemical Company Division of Rhone-Poulenc, Inc.
    Inventors: Eugene Brotsky, Charles W. Everson, William E. Swartz
  • Certain substituted 4-benzoyl-3,5-dioxotetrahydropyrans and thiopyrans
    Patent number: 4786309
    Abstract: Compounds of the formula ##STR1## wherein X is oxygen, sulfur or sulfonyl;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.m -- wherein m is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together are alkylene having 2 to 5 carbon atoms;R.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: November 22, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Charles G. Carter, Jeff K. Curtis
  • Process for preparing substituted phthalic anhydrides
    Patent number: 4785120
    Abstract: Yield and assay (purity) improvements in the reaction of bromine and the Diels-Alder addition product of maleic anhydride and a conjugated diene in the presence of a nitrogenous acid acceptor are realized in the instant process. The heating time after completion of bromine addition is increased to more completely eliminate hydrogen bromide from the reaction medium and thereby drive the reaction to completion. Also, the type of catalyst selected for use is one which will yield a phthalimide by-product impurity having a boiling point which differs enough from the boiling point of the desired product to allow for distillative separation of the impurity and desired product.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: November 15, 1988
    Assignee: Stauffer Chemical Company
    Inventor: Edmund J. Rumanowski
  • Preparation of halophthalic anhydrides
    Patent number: 4785121
    Abstract: A process for selectively substituting an aromatic nitro group of a nitrophthalic anhydride with a halo group which comprises contacting the nitroaromatic-containing compound with a phosphorus halide of formula:R.sub.n PX.sub.5-nwherein n is selected from 0, 1, 2 and 3; R is selected from the group consisting of C-6 to C-10 aryl and substituted aryl wherein the substituents are selected from the group consisting of: straight and branched chain alkyl, alkoxy, and haloalkyl; halogen, sulfonate and mixtures thereof; and X is a halogen. The process can take place in the presence of an arylphosphorusoxydihalide solvent or without using a solvent. The use of an arylphosphorustetrahalide and particularly phenylphosphorustetrachloride is preferred. The arylphosphorustetrahalide can be prepared in situ by contacting a solution of the corresponding arylphosphorusdihalide in an arylphosphorusoxydihalide solvent with a halogen.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: November 15, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Andrea Leone-Bay, Elliott Bay, Peter E. Timony
  • Certain 2-(2-substituted benzoyl)-4-(substituted oxy or substituted thio)-1,3-cyclohexanediones
    Patent number: 4783213
    Abstract: Compounds of the formula ##STR1## wherein X is oxy, thio, sulfinyl or sulfonyl;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; trifluoromethoxy; difluoromethoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl, trifluoromethyl or difluoromethyl;R.sup.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, phenyl or substituted phenyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are C.sub.2 -C.sub.5 alkylene;R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, phenyl or substituted phenyl with the proviso that R.sup.1 and R.sup.3 are not both phenyl or substituted phenyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.6 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, or phenyl;R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: November 8, 1988
    Assignee: Stauffer Chemical Company
    Inventor: David L. Lee