Patents Examined by Christine Skane
  • Patent number: 4891070
    Abstract: A method of producing a lignin by-product of the black liquor residue of a kraft pulping process having improved water-solubility in amine salt form wherein the lignin precipitate of the black liquor residue is water-wash purified and maintained at moderately acid pH of no lower than about 5. The lignin may then be combined in aqueous slurry with an organic amine, such as monoethanolamine, to provide a highly stable aqueous solution of the amine salt of the lignin. The water-soluble lignin salt is particularly suited for use as an additive in water-based pigment printing compositions. The lignin amine salt functions as a grinding agent for the pigment in formulating and as a binder for the pigment in the printing process.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: January 2, 1990
    Assignee: Westvaco Corporation
    Inventors: Peter Dilling, Mitchell S. Dimitri
  • Patent number: 4889649
    Abstract: A method for transmitting power which is characterized by the use of a traction drive fluid containing, as a base stock, a composition composed of 40 to 80 wt % of 2,4-dicyclohexyl-2-methylpentane and 20 to 60 wt % of a mixture of polycyclohexylalkane and a perhydroindane derivative, with the weight ratio of the perhydroindane derivative to the polycycloalkane being up to 0.5, and having a viscosity (at 100.degree. C.) of 5.0 to 15.0 cSt (10.sup.-2 cm.sup.2 /sec). This fluid has a high traction coefficient and a good oxidation stability.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: December 26, 1989
    Assignee: Nippon Petrochemicals Company, Ltd.
    Inventors: Yoshikazu Murai, Tatsuo Yamaguchi, Kanji Mochizuki
  • Patent number: 4888056
    Abstract: Shop primer compositions having improved properties comprise (a) fillers and pigments, at least 25 wt. % of which have conductive properties; (b) zinc powder in a weight ratio to fillers and pigments between 1:16 and 1:1; wherein the zinc, fillers and pigments are milled to a sufficient fineness; (c) anti-settling agents; (d) optionally, thickening agents; (e) a silicate-type binder, in an amount such that the weight ratio of the SiO.sub.2 content of the binder to the zinc, fillers and pigments is between 1:4 and 1:16; and (f) solvents.When using the shop primer compositions of the present invention, the welding properties are improved and the health hazards during welding are reduced, without having to remove the primer layer at the welding area. The primer coatings are compatible with the welding techniques generally used in the heavy steel construction industry, including MIG/MAG welding in 3F position.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: December 19, 1989
    Assignee: Labofina, S.A.
    Inventors: Cornelis E. M. van der Kolk, Hendrik Van der Poel, Jozef Braeken
  • Patent number: 4888339
    Abstract: Novel agent for the propylaxis and treatment of heart failure, which comprises as an active ingredient a 2-oxo-imidazolidine compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are each a lower alkyl group, R.sup.3 is a phenyl-substituted lower alkyl group, and R.sup.4 is a hydrogen atom or a lower alkyl group, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: December 19, 1989
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Masami Kubo, Takashi Ochiai, Hirofumi Yuasa
  • Patent number: 4885034
    Abstract: In a process for producing a composite TiO.sub.2 pigment which contains a white inert extender, the neutralization is simplified and the need for washing processes is eliminated in that a metatitanic acid suspension, which contains free and combined sulfuric acid and has been purified for the removal of chromophoric elements, is neutralized by an addition of calcium oxide and/or barium oxide in quantities which are stoichiometric with respect to total sulfate, the calcium sulfate and/or barium sulfate is precipitated in an intimate mixture with the metatitanic acid, and the coprecipitate is separated and dried. The precipitated calcium sulfate and/or barium sulfate is contained in the coprecipitate in an amount from 1 to 25% by weight.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: December 5, 1989
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Wolfgang Kreth, Wolf-Dieter Griebler
  • Patent number: 4885392
    Abstract: Polyamines based on derivatives of 1,3-bissubstituted 2-propanol containing a multiplicity of amino groups, the latter containing at least one primary amino group and additionally further N-basic groupings, prepared by reacting 1,2,3-trisubstituted propane compounds with bis(primary amines or with monoamines and bis(primary amines).The polyamines according to the invention are clear to yellowish or yellow products which, at room temperature, form viscous to highly viscous liquids or may be paste-like or wax-like. They may be used, inter alia, advantageously as starting products for the preparation of thermosetting, in particular water-dispersible and cataphoretically depositable binders based on aminourethanes for coating solid substrates, in particular metals.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: December 5, 1989
    Assignee: Hoechst AG
    Inventors: Rudiger Lenz, Gerd Walz, Michael Honel, Peter Ziegler
  • Patent number: 4881974
    Abstract: A silver-glass paste consisting essentially of silver flake, silver oxide, lead borate glass, resin, thixotrope and solvent.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: November 21, 1989
    Assignee: Johnson Matthey, Inc.
    Inventor: Thomas Herrington
  • Patent number: 4880465
    Abstract: A non-pigmented ink suitable for use in ink jet printing is disclosed. The ink comprises a resin component, hollow microspheres, and a suitable carrier vehicle. The hollow microspheres contain a central void region filled with a liquid capable of diffusing through the walls of said microspheres and have an inside diameter from about 0.1 to about 0.5 micron and an outside diameter from about 0.4 to about 1 micron.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: November 14, 1989
    Assignee: Videojet Systems International, Inc.
    Inventors: Adrian Loria, Josephine Aguilar
  • Patent number: 4877542
    Abstract: A thermal insulating fluid which is well suited for the insulation of steam injection wells comprises a heavy oil having an API gravity of not more than 15.degree. and a water content of not more than about 5% by volume as a major liquid portion, a light oil as a minor liquid portion, a smectite-type clay in an amount sufficient to impart thixotropic properties to the fluid, calcium oxide in an amount sufficient to maintain gel strength at elevated temperatures and to inhibit light oil losses through evaporation, and hydrated amorphous sodium silicate with a SiO.sub.2 /Na.sub.2 O modulus ratio of about 3 to about 4 present in an amount sufficient to reduce thermal conductivity of said thermal insulating fluid.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: October 31, 1989
    Assignee: Intevep, S. A.
    Inventors: Jesus R. Lon, Olegario Rivas, Geza N. Zirczy
  • Patent number: 4874540
    Abstract: A composition having a high chelation value may be made by blending about 50 to 80 wt-% of a polyether such as polyethylene glycol, about 20 to 50 wt-% of a polycarboxylate such as polyacrylate moiety or an acrylate monomer, and about 0.1 to 0.5 mole-%, based upon the polyacrylate moiety or the monomer, of an organic peroxy catalyst such as t-butyl perbenzoate at a temperature below about 110.degree. C. but sufficient to liquefy the blend and cause grafting of a polyether on the polycarboxylate.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: October 17, 1989
    Assignee: Ecolab Inc.
    Inventors: Richard B. Greenwald, Chung-Tsing Liu, James A. McDonell
  • Patent number: 4874896
    Abstract: This invention relates to a process for preparing an alkylamine by contacting an alcohol and at least one of ammonia, a primary amine, a secondary amine or a tertiary amine with a non-zeolitic molecular sieve under conditions effective to produce the alkylamine.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: October 17, 1989
    Assignee: UOP
    Inventors: Kurt D. Olson, Steven W. Kaiser
  • Patent number: 4873011
    Abstract: An antifreeze composition for use in aluminum internal combustion engines is disclosed. It is comprised of from 0.05 percent to 0.5 percent silicate, from 0.07 percent to 0.35 percent nitrate, from 0.2 percent to 2.0 percent phosphate, from 0.5 percent to 4.0 percent benzoate, from 0.1 percent to 1.0 percent molybdate, from 0.02 percent to 0.3 percent vanadate, from 0.05 percent to 0.3 percent triazole, and from 100 ppm to 5000 ppm organosilane stabilizer for the silicate. Organic amines and borates are excluded in the compositions and the pH of the compositions is from about 7 to about 9.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: October 10, 1989
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Il Nam Jung, Sang Yo Hwang, Chung Suk Lee
  • Patent number: 4870109
    Abstract: A series of 1,3-propanediones having a perfluoroalkyl group or a perfluorocycloalkyl group on one carbonyl, and a 3,5-disubstituted phenyl group on the other, are useful when administered to animals for the control of ectoparasites.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: September 26, 1989
    Assignee: Eli Lilly and Company
    Inventors: Rudolph J. Boisvenue, Gary D. Crouse
  • Patent number: 4867795
    Abstract: Plateletlike pigments based on iron oxide and having a spinel structure of the composition:Mn.sub.u Al.sub.v Fe.sub.[3-(u+v)]-z O.sub.4-z,whereu is from 0.01-0.09,v is from 0-0.3 andz is from 0-1.The pigments can be used for producing decorative coatings, in particular in paints, plastics, prints and cosmetics, for producing electromagnetic screens, as substrates for coatings and as pigments having magnetic properties.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: September 19, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Ostertag, Norbert Mronga
  • Patent number: 4867790
    Abstract: An ionogenic compound, soluble or dispersible in aziridine compounds is utilized for delaying the polymerization of aziridine compounds initiated by a sulfonium salt. Said ionogenic compounds contain an anion which is more nucleophilic than the anion present in the sulfonium salt employed. Moreover, a preparation for dental purposes is described which contains these components.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: September 19, 1989
    Assignee: ESPE Stiftung & Co. Produktions- und Vertriebs KG
    Inventors: Peter Jochum, Wolf-Dietrich Zahler, Oswald Gasser, Gunther Lechner, Klaus Ellrich
  • Patent number: 4867794
    Abstract: In mica/titanium dioxide pigments reliable rutilization is obtained with small amounts of tin by precipitating tin dioxide directly on the mica and completing this precipitation before the precipitation of titanium dioxide is started.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: September 19, 1989
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Klaus Ambrosius, August Knapp, Helmut Plamper, Reiner Esselborn
  • Patent number: 4865617
    Abstract: The invention relates to a dyeing composition for keratinous fibres containing, in a cosmetically acceptable solvent medium, at least one para-type oxidation dye precursor in combination with at least one heterocyclic coupler of formula: ##STR1## in which R denotes a hydrogen atom, a C.sub.1 -C.sub.4 radical, a C.sub.2 -C.sub.4 hydroxyalkyl radical, a C.sub.3 to C.sub.6 polyhydroxyalkyl radical, or a C.sub.2 -C.sub.6 alkoxyalkyl radical, Z, independently of R, denotes a C.sub.1 to C.sub.4 alkyl radical, a C.sub.2 to C.sub.4 hydroxyalkyl radical, a C.sub.3 to C.sub.6 polyhydroxyalkyl radical, a C.sub.2 -C.sub.6 alkoxyalkyl radical or a trifluoroethyl radical, R.sub.1 and R.sub.2 independently of each other denote a hydrogen atom or a C.sub.1 to C.sub.4 alkyl radical, or one of the addition salts of the compound of formula (I) with an inorganic acid, a process for the oxidation dyeing of hair using this composition as well as the new couplers of formula (I) where Z is other than methyl when R.sub.1, R.sub.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: September 12, 1989
    Assignee: L'Oreal
    Inventors: Alex Junino, Alain Genet, Gerard Lang
  • Patent number: 4865650
    Abstract: Composition of matter containing:(a) a compound of the formula I ##STR1## in which A is one of the groups of the formulae ##STR2## in which B is --O--, --S--, --SO.sub.2 --, --N.dbd.N--, --CH.sub.2 --, --CH.dbd.CH--, --O--CH.sub.2 --O-- ##STR3## --CONH--, --NHCONH-- or --CONHNHCO--, Q is --O' or --NH' and Z is --O-- or --S-- and R and R' are independently of each other hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or phenoxy, and (b) a compound of the formula II ##STR4## in which X.sup..sym. is H.sup..sym. or a group of the formulae ##EQU1## or N.sup..sym. (R.sub.1) (R.sub.2) (R.sub.3) (R.sub.4), M.sup.n.sym. is an n-valent metal cation, n is 1, 2 or 3, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently of one another hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, unsubstituted or C.sub.1 -C.sub.18 -alkyl-substituted phenyl or R.sub.3 and R.sub.4 together with the N atom form a pyrrolidine, imidazolidine, piperidine, piperazine or morpholine radical, or R.sub.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: September 12, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Jost von der Crone, Bernhard Medinger, Philippe Bugnon
  • Patent number: 4863636
    Abstract: N-hydroxyimide compounds derived from substituted phthalic anhydride are provided which exhibit strong metal ion chelating ability, making them useful as detergent additives, in boiler water systems, as reaction intermediates, etc. A detergent composition containing N-hydroxyimide and/or carboxy hydroxamic acid detergent additives is also disclosed.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: September 5, 1989
    Assignee: American Cyanamid Company
    Inventors: Laurence W. Chang, Robert G. Fischer
  • Patent number: 4863522
    Abstract: A composition comprising(a) a dianthraquinonyl pigment of formula I ##STR1## (b) a compound of formula II ##STR2## wherein X.sup..sym. is H.sup..sym. or a group of formula M.sup.n.sym. /n or N.sup..sym. (R)(R.sub.1)(R.sub.2)(R.sub.3), M.sup.n.sym. is a monovalent metal cation of valency n, n is 1, 2 or 3, each of R, R.sub.1, R.sub.2 and R.sub.3 independently is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.6 cycloalkyl, phenyl or phenyl which is substituted by C.sub.1 -C.sub.18 alkyl, or R.sub.2 and R.sub.3, together with the linking nitrogen atom, are a pyrrolidine, imidazolidine, piperidine, piperazine or morpholine radical, or R.sub.1, R.sub.2 and R.sub.3, together with the linking nitrogen atom, are a pyrrole, pyridine, picoline, pyrazine, quinoline or isoquinoline radical, r and t are each independently of the other 0 or 1, with the proviso that at least one of r and t must be 1.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: September 5, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Max Jost, Edward E. Jaffe, Philippe Bugnon