Patents Assigned to Stauffer Chemical Company
  • Removal of semiconductor wafers from dicing film
    Patent number: 4664739
    Abstract: Semiconductor chips, which have been diced, can be removed from the conductive adhesive/polymer support film holding them, without leaving residual adhesive on the film if the wafer/adhesive support film laminate is heated prior to the dicing step. The heating step increases the release characteristics between the adhesive and film.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: May 12, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Joseph A. Aurichio
  • Antiwear additives for functional fluids
    Patent number: 4664828
    Abstract: Certain heretocyclic hydrogen phosphonates are disclosed as having utility in functional fluids, particularly synthetic lubricants and/or water-based functional fluids. Antiwear characteristics and other properties are improved by the blending of additives such as spiro-bis-hydrogen phosphonate and cycloneopentyl hydrogen phosphonate with non-petroleum base stocks such as water, phosphate esters, and mixed polyalphaolefins/polyol esters. Preferred formulations are disclosed.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: May 12, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Alfred K. Jung, Geralyn Mullin
  • Phospho-boro-silanol interlayer dielectric films and preparation
    Patent number: 4663414
    Abstract: There are disclosed certain categories of novel spin-coating compositions comprising phosphorus-doped and/or boron-doped silsesquioxane oligomers. Cured interlayer dielectric films prepared therefrom have a superior combination of defined properties, particularly including adhesion (of single-coat and multiple coats) and/or resistance against degradation at temperatures above 500.degree. C. The spin-coating compositions are prepared in a critical manner from critical raw materials.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: May 5, 1987
    Assignee: Stauffer Chemical Company
    Inventors: William E. Estes, Wayne E. Marsh
  • Resealable shipping container
    Patent number: 4660736
    Abstract: A shipping container is positively resealed by an auxiliary cover. The shipping container and auxiliary cover have a plurality of flanges with coupling holes. The flange holes are aligned and held in position by coupling pins with retaining means.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: April 28, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Terrell L. Mays
  • Process for the formation of phosphonoalkylated amino acids
    Patent number: 4661298
    Abstract: The reaction of amino acids and a haloalkylphosphonic acid to form the corresponding phosphonoalkylated amino acid is promoted by use of a catalytically effective amount of a polyamine catalyst which contains a sufficiently high concentration of amine nitrogen atoms to promote the reaction.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: April 28, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Stanley B. Mirviss, Edward D. Weil
  • S-allyl trithiophosphonate insecticides
    Patent number: 4659703
    Abstract: Insecticides have the formula ##STR1## in which R.sub.1 methyl or ethyl and R.sub.2 is C.sub.3 -C.sub.5 alkyl.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: April 21, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Charles G. Chavdarian
  • S-(substituted allylic) trithiophosphonate insecticides
    Patent number: 4659702
    Abstract: Compounds and compositions containing them, for insecticidal control, particularly for use as soil and/or foliar insecticides, have the formula ##STR1## in which R.sub.1 is C.sub.1 -C.sub.3 alkyl;R.sub.2 is C.sub.1 -C.sub.6 alkyl, or C.sub.5 -C.sub.6 cycloalkyl;R.sub.3 is hydrogen or C.sub.1 -C.sub.3 alkyl;R.sub.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, phenyl, halogen, or halo-(C.sub.1 -C.sub.4 alkyl);R.sub.5 and R.sub.6 are independently hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, phenyl, or C.sub.2 -C.sub.5 carboalkoxy; orR.sub.3 and R.sub.5 taken together form a trimethylene group; provided that if R.sub.3, R.sub.5 and R.sub.6 are all hydrogen, R.sub.4 is other than hydrogen.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: April 21, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Charles G. Chavdarian, Valerie F. Heusinkveld
  • Method of preparing dialkylphenylphosphonates
    Patent number: 4659854
    Abstract: Dialkylphenylphosphonates are prepared by the reaction of a metal alkoxide with a phenyl phosphonic dihalide. The reactants are combined to give a temperature rise to 60.degree. C. within 15 minutes, resulting in improved yields and assay of product.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: April 21, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Karl E. Reineke
  • O-(substituted allylic) dithiophosphonate insecticides
    Patent number: 4656164
    Abstract: Compounds having the formula ##STR1## in which R.sub.1 is methyl or ethyl; R.sub.2 is C.sub.1 -C.sub.6 alkyl; R.sub.3 is hydrogen, halogen or methyl; and R.sub.4 is hydrogen, methyl or phenyl; or R.sub.3 and R.sub.4 taken together form a tetramethylene chain; provided that R.sub.3 and R.sub.4 are not both hydrogen, are insecticides and/or nematicides.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: April 7, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Charles G. Chavdarian
  • Liquid-water displacement composition of a chlorofluorocarbon compound and a phosphate salt surfactant
    Patent number: 4655958
    Abstract: Liquid-water displacement compositions containing a normally liquid chlorofluorocarbon compound with a surfactant comprising a tetraalkyl ammonium compound derived from an aryl acid phosphate are described. They are useful in aiding in the substantially complete removal of water from the surface of metals.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: April 7, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Alfred K. Jung, Edward D. Weil
  • Process for producing laminated polyether urethane foam
    Patent number: 4654105
    Abstract: Polyether urethane foams that are heat laminatable are prepared by incorporating within the foam an effective amount of an organophosphorus additive. This organophosphorus additive can be an organophosphite, an organophosphonate, an organophosphate, and a mixture thereof. This foam can also include an halogenated flame retardant.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: March 31, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Gerald Fesman
  • Herbicidal phosphonomethyl amides
    Patent number: 4654072
    Abstract: Compounds having the formula ##STR1## in which R is hydrogen, cyano or --COOR.sub.2 ; R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; and Z is ##STR2## in which A is halogen, B is halogen or hydrogen and Y is nitrogen or --CH--, are herbicides.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: March 31, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Raymond A. Felix
  • S-propargyl trithiophosphonate insecticides
    Patent number: 4654430
    Abstract: Compounds having the formula ##STR1## in which R.sub.1 is methyl or ethyl and R.sub.2 is ethyl or a C.sub.3 -C.sub.5 branched alkyl group other than, 1,2-dimethylpropyl, are effective soil insecticides.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: March 31, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Alexandra B. Shortt
  • Method of treating the arsenic containing filter media from phosphoric acid purification
    Patent number: 4652380
    Abstract: Filter cake waste media from a phosphoric acid purification process containing contaminating amounts of arsenic is treated in the process of this invention to remove the arsenic therefrom and to render the filter media suitable for reuse. The process of the invention comprises separating the arsenic contaminant from the filter material by treating the material with sufficient amount of a base, such as soda ash, to dissolve the contaminating arsenic compounds into solution and separating and recovering the filter media from the arsenic-containing solution. The separated arsenic can be recovered by reprecipitation utilizing an acid and a source of soluble sulfide ions.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: March 24, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Donald R. Wheeler
  • Laminated heat-sealed polyether urethane foam
    Patent number: 4652485
    Abstract: Polyether urethane foams that are heat laminatable are prepared by incorporating within the foam an effective amount of an organophosphorus additive. This organophosphorus additive can be an organophosphite, an organophosphonate, an organophosphate, and a mixture thereof. This foam can also include an halogenated flame retardant.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: March 24, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Gerald Fesman
  • Rapid curing, thermally stable adhesive composition comprising epoxy resin, polyimide, reactive solvent, and crosslinker
    Patent number: 4652398
    Abstract: A novel adhesive exhibiting low outgassing upon exposure to high temperatures is disclosed. The instant adhesive comprises: (a) an epoxy resin, (b) a soluble polyimide resin, (c) a reactive solvent; and (d) an alkenylphenol crosslinker which preferably contains polyhydroxy and polyalkenyl substituents. Optionally, the adhesive may also contain a conductive material.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: March 24, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Jagadish C. Goswami, Richard A. Rehder, Anthony L. DeSalvo
  • Oxazolidone herbicides and methods of use
    Patent number: 4650512
    Abstract: A substituted oxazolidone compound having the formula ##STR1## wherein Ar.sup.1 and Ar.sup.2 are the same or different and are aromatic or a substituted aromatic group wherein the substituent is selected from chlorine, bromine, chloride or trifluoromethyl, and R is lower alkyl having from 1 to 6 carbon atoms.
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: March 17, 1987
    Assignee: Stauffer Chemical Company
    Inventors: Raymond A. Felix, Eugene G. Teach
  • Purification of substituted phthalic anhydrides
    Patent number: 4650880
    Abstract: A process for purifying crude substituted phthalic anhydrides, e.g. 4-methylphthalic anhydride, derived from the dehydrogenation in the presence of bromine of a Diels-Alder addition product of a conjugated diene, e.g. isoprene, and maleic anhydride. In this process, a mixture of the crude, liquid substituted phthalic anhydride, e.g. 4-methylphthalic anhydride, and an alkali is heated to a temperature effective to reduce the impurities present in the crude substituted phthalic anhydride. Suitable alkalis can include sodium hydroxide and sodium carbonate. Mild alkalis are heated to a higher temperature, e.g. 130.degree. C. for sodium carbonate, whereas stronger alkalis are heated to a lower temperature, e.g. 90.degree. C. for sodium hydroxide.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: March 17, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Avinash Kachhy
  • Hydrogenation of substituted, unsaturated hydantoins to substituted, saturated hydantoins
    Patent number: 4650876
    Abstract: Unsaturated hydantoins are reduced to the corresponding saturated hydantoin by carrying out the hydrogenation reaction using a nickel catalyst in the presence of more than a stoichiometric amount of caustic. Use of this process allows for almost complete hydrogenation in short reaction times and also allows the reaction to be done using aqueous solvents and low levels of catalyst.Frothing or foaming of the hydrogenation reaction mixture at elevated concentrations of hydantoin is overcome by incremental addition of hydantoin to the hydrogenation reaction mixture.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: March 17, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Stanley B. Mirviss
  • Method for forming evaporated pnictide and alkali metal polypnictide films
    Patent number: 4649024
    Abstract: A method and apparatus are provided for producing fine quality pnictide films by vacuum evaporation and molecular beam deposition. A pnictide source, preferably phosphorous, is heated to produce a continuous supply of vapor species, preferably P.sub.4. The vapor species is cracked by a heated tungsten wire positioned adjacent the pnictide source to produce P.sub.2 molecules. A second tungsten wire cracker is located adjacent a substrate to prevent the recombination of P.sub.2 molecules into P.sub.4 molecules. The P.sub.2 molecules are deposited on the substrate and condense into amorphous pure phosphorous shiny red films. A separate source of alkali metal intercalate, preferably KC.sub.8, may also be heated to provide an alkali metal vapor for producing films of alkali metal polypnictide films, preferably KP.sub.x where x is equal to or greater than 15, to be deposited on the substrate.
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: March 10, 1987
    Assignee: Stauffer Chemical Company
    Inventors: David G. Brock, John A. Baumann