Patents Assigned to Stauffer Chemical Company
  • Mixed alkylsulfonium salts of N-phosphonomethylglycine
    Patent number: 4464194
    Abstract: As a new compound, mixed alkylsulfonium salts of N-phosphonomethylglycine having the formula ##STR1## wherein R.sup.1 is selected from the group consisting of long-chain saturated or unsaturated alkyl groups having from 12 to 20 carbon atoms and R.sup.2 and R.sub.3 are the same or different and are selected from the group consisting of lower alkyl having from 1-3 carbon atoms.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: August 7, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Michael P. Prisbylla
  • Di-aryl monochlorophosphine waste treatment
    Patent number: 4463202
    Abstract: A method of treating the residue generated in the production of diphenylphosphinous chloride is presented. The method comprises extracting the aluminum content of the residue by contacting the residue with an organic solvent to produce a mixture which when hydrolyzed results in a two-phase solution, the organic phase of which can be incinerated.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: July 31, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Gershon J. Davis
  • Acid-resistant phosphate ester functional fluids
    Patent number: 4461713
    Abstract: An acid resistant phosphate ester functional fluid comprises phosphate ester basestock and an additive composition comprising: (1) N-alkyl-2-pyrrolidone, (2) epoxide, and (3) triazole. The functional fluid has utility for lubricating machinery. The additive composition may be prepared separately and used for imparting acid resistance to phosphate esters.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: July 24, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Joseph F. Anzenberger, Sr.
  • Photopolymerizable composition stabilized with epoxide compounds and process
    Patent number: 4459192
    Abstract: A stabilized photopolymerizable composition comprising photopolymerizable ethylenically unsaturated monomeric compounds, a photoinitiator and at least one epoxide compound as a stabilizer.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: July 10, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Francis A. Via
  • Flexible polyurethane foams containing glycoluril reaction products for a flame and ember drip retardance
    Patent number: 4458036
    Abstract: Polyurethane foams prepared from the reaction of polyester polyol with organic isocyanate have improved flame retardance and dripping ember retardance by incorporation of an additive comprising (1) halogenated flame retardant, and (2) organic solvent soluble glycoluril-formaldehyde material.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: July 3, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Gerald Fesman
  • Process for preparing phosphonomethylated amino acids
    Patent number: 4457873
    Abstract: A process for preparing phosphonomethylated amino acids comprising phosphonomethylating a N-carboxymethyl-S-methylene bisdithiocarbamate with formaldehyde and a phosphorus source to obtain a phosphonomethylated bisdithiocarbamate which is then hydrolyzed to the phosphonomethylated amino acid salt. Acidification yields the corresponding phosphonomethylated amino acid, e.g. glyphosate, or acid derivative.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: July 3, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Sreeramulu Nagubandi
  • Polyurethane foam having a flame retardant oligomeric phosphate ester
    Patent number: 4458035
    Abstract: Flame retardant oligomeric phosphate ester compositions having the structural formula: ##STR1## are prepared, wherein R is C.sub.1 -C.sub.10 alkyl or haloalkyl, R.sup.1 and R.sup.2 can be the same or different and are hydrogen, C.sub.1 -C.sub.10 alkyl or haloalkyl and n is an integer from zero to about 10.The method of preparing the compositions comprises reacting P.sub.2 O.sub.5 with a trialkyl or tris(haloalkyl)phosphate in the presence of about 0.01% to about 5% of a phosphite at a temperature from about 0.degree.-200.degree. C. A polyphosphate ester having P--O--P bonds is formed which is then reacted with an epoxide to yield the oligomeric phosphate ester flame retardant compositions.Alternatively, a method of preparing similar compositions comprises reacting P.sub.2 O.sub.5 with a trialkyl or tris (haloalkyl)phosphite at a temperature from about 0.degree. C. to about 200.degree. C.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: July 3, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Thomas A. Hardy, Fred Jaffe
  • Insect repellent compounds
    Patent number: 4457934
    Abstract: Compounds having the formula ##STR1## in which R is C.sub.3 -C.sub.5 alkyl, C.sub.3 -C.sub.5 alkenyl, cyclopropyl, or ##STR2## R.sub.1 is C.sub.1 -C.sub.4 alkyl; R.sub.2 is C.sub.1 -C.sub.4 alkyl, and the side chain is substituted on the pyridyl ring at the 2- or 3-position, are effective insect repellents.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: July 3, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Rayman Y. Wong
  • Process for preparing amides of methylphosphonates
    Patent number: 4456566
    Abstract: A process is provided for the preparation of diaryl methylphosphonates through the reaction of triaryl phosphites with methanol in the pressure of a catalytic quantity of methyl iodide. The reaction is conducted at a temperature of from about 170.degree. C. to about 250.degree. C. New and useful derivatives are produced by reaction of the diaryl methylphosphonates with polyols or amines.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: June 26, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Milton L. Honig, Edward D. Weil
  • Synergistic herbicidal combination
    Patent number: 4456472
    Abstract: A mixture of the herbicides napropamide and butam has been found to exhibit synergistic results, particularly in pre-emergence surface application or pre-plant incorporation, and for controlling weeds in the presence of a rapeseed crop.
    Type: Grant
    Filed: November 29, 1982
    Date of Patent: June 26, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Bareld E. Groenwold
  • Encapsulation process
    Patent number: 4456569
    Abstract: A protective colloid for use in an interfacial polymerization process comprising a graft copolymer of polyvinyl alcohol and methyl vinyl ether/maleic acid.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: June 26, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Marius Rodson, Herbert B. Scher
  • High acid monocalcium phosphate and process for preparing the same
    Patent number: 4454103
    Abstract: A high acid monocalcium phosphate can be prepared by partially neutralizing phosphoric acid with lime. A substantially non-caking product can be made by hydrating the high acid product dried to a L.O.I. of between about 16% to less than 18.5% with water to an L.O.I. of from 18.5% to about 23% and drying to a free water content of less than 1%. The product is useful in effervescent dry beverage mixes and pharmaceuticals.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: June 12, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Robert E. Benjamin, Thomas E. Edging
  • O,O-dialkyl-N-phosphonomethyl-N-halomethyl acetamide
    Patent number: 4454063
    Abstract: A method for preparing N-phosphonomethylglycine comprising (a) O,O-dialkylaminomethylphosphonate with formaldehyde to produce a triazine; (b) reacting the triazine formed in step (a) with an acyl halide to form the O,O-dialkyl-N-phosphonomethyl-N-chloromethyl acetamide of the acyl halide; (c) reacting the amide formed in step (b) with metal cyanide to form O,O-dialkyl-N-cyanomethyl-N-acetamide; and (d) hydrolyzing the acetamide formed in step (c) to yield N-phosphonomethylglycine.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: June 12, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Raymond A. Felix
  • 3-Perhaloalkylhydroxy-oxazolidines and thiazolidines herbicidal antidotes
    Patent number: 4453968
    Abstract: Compounds having the formula ##STR1## in which R is selected from the group consisting of chloro and fluoro;R.sub.1 -R.sub.4 are each independently selected from the group consisting of hydrogen and 1-4 carbon alkyl; andX is oxygen or sulfur protect crops from thiocarbamate herbicidal injury.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: June 12, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Eugene G. Teach
  • Insect repellent: N,N-diethyl-2-(4-thiochromanyloxy)-propionamide
    Patent number: 4452810
    Abstract: The compound N,N-diethyl-2-(4-thiochromanyloxy)-propionamide, ##STR1## is an insect repellent.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: June 5, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Nathan S. Bunker, Rayman Y. Wong
  • Alkyl vanadate color improvement
    Patent number: 4452724
    Abstract: The color of alkyl vanadate compounds that have become discolored is improved by treating the vanadates with a nitrogen oxide oxidant to achieve the color improvement.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: June 5, 1984
    Assignee: Stauffer Chemical Company
    Inventor: George C. Ciomo
  • Dithiane and dithiolane herbicide antidotes
    Patent number: 4451280
    Abstract: Herbicide antidote compounds and herbicidal compositions consisting of at least one active thiolcarbamate herbicide compound and an antidote therefor and the methods of use of the antidote compound and compositions wherein the antidote compounds correspond to the formula ##STR1## wherein R is haloalkyl having 1-4 carbon atoms, inclusive, and n is 2 or 3.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: May 29, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Eugene G. Teach
  • Heat recovery in P.sub.2 O.sub.5 production process
    Patent number: 4450146
    Abstract: Waste heat is recovered during the production of phosphorus pentoxide by a process comprising the combustion of phosphorus and the passing of the combustion gases through a fluid bed, wherein the solids making up the fluid bed are utilized to recover heat values derived from the process by contacting the same with water to produce steam.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 22, 1984
    Assignee: Stauffer Chemical Company
    Inventor: John E. Klepeis
  • Catalyst for polymerizing olefins
    Patent number: 4450242
    Abstract: A novel catalytic system for polymerizing olefins comprises:(a) a cocatalytic component containing an organometallic compound of Groups I-III of the periodic table, and(b) a catalytic component containing titanium obtained by:(i) copulverizing a substantially anhydrous magnesium compound containing halogen or manganese compound containing halogen with: a phenol, an organic polymer containing silicon, a titanium halide, and an electron-donor compound to produce a copulverized product, and(ii) reacting the copulverized product with a liquid titanium compound containing halogen.The invention also encompasses the novel catalytic component, processes for preparing the catalytic component containing titanium, and the use of the novel catalytic system for polyermizing olefins.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: May 22, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Robert I. Mink
  • Process for the removal of SO.sub.2 from gas streams
    Patent number: 4450145
    Abstract: The removal of SO.sub.2 from two or more gas streams of differing SO.sub.2 content is accomplished by feeding each of the streams to an absorbent so that the more dilute SO.sub.2 -containing stream or streams is supplied to the absorbent upstream from the point at which the more concentrated stream or streams is supplied. By supplying the gas streams to the absorbent flow in ascending order of SO.sub.2 concentration, the amount of SO.sub.2 absorbed by the absorbent flow is increased.
    Type: Grant
    Filed: October 27, 1982
    Date of Patent: May 22, 1984
    Assignee: Stauffer Chemical Company
    Inventor: John E. Klepeis