Patents Examined by Prince E. Willis
  • Wrinkle resistant cellulosic textiles
    Patent number: 5042986
    Abstract: A process for imparting wrinkle resistance and smooth drying properties to cellulose textiles by crosslinking the cellulose with a cyclic aliphatic polycarboxylic acid having at least two adjacent carboxyl groups in the trans configuration relative to each other, and the resulting crosslinked textile.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: August 27, 1991
    Assignee: The Dow Chemical Company
    Inventors: John D. Kitchens, Robert T. Patton, Bassam S. Nadar
  • Grease composition containing urea, urea-urethane, or urethane thickeners
    Patent number: 5043085
    Abstract: A grease composition comprises a base oil selected from the group consisting of mineral lubricant base oils, synthetic lubricant base oils and mixtures thereof, (A) 2 to 25 wt %, based on the total weight of the composition, of a thickener selected from the group consisting of urea compounds, urea-urethane compounds, urethane compounds and mixtures thereof and (B) 0.2 to 5.0 wt. %, based on the total weight of the composition, of an ingredient selected from the group consisting of oxidized paraffins, diphenylhydrogen phosphite, hexamethyl phosphoric triamide and mixtures thereof.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: August 27, 1991
    Inventors: Hirotugu Kinoshita, Makoto Sekiya, Masaru Mishima
  • Addives for paraffinic lubricants
    Patent number: 5043087
    Abstract: Multifunctional additives for lubricating oils containing n-paraffins, said additives comprising a solvent and a blend of polymers containing(I) from 10 to 99 percent by weight of one or more polymers P1 composed of monomers of(A) esters of methacrylic acid, acrylic acid, or both(a) with a linear alcohol having from 16 to 30 carbon atoms,(b) with a branched alcohol having from 8 to 40 carbon atoms, and optionally, other alcohols, and(II) from 1 to 90 percent by weight to one or more polymers P2 composed of monomers of(A') esters of methacrylic acid, acrylic acid, or both(a') with a linear alcohol having from 16 to 30 carbon atoms, and, optionally other alcohols.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: August 27, 1991
    Assignee: Rohn GmbH
    Inventors: Horst Pennewiss, Heinz Jost, Helmut Knoell
  • Process for preparing an additive for lubricating oils, the additive thus obtained and a lubricating composition containing the additive
    Patent number: 5041231
    Abstract: The present invention concerns a process for preparing a basic additive for lubricating oils having an antiwear and detergent effect, the additive thus obtained and a lubricating composition containing the additive. The process consists of contacting an amino-acid in solution or in dispersion in the oil with a detergent, an alkaline-earth metal derivative, carbon dioxide in diluent oil, a hydrocarbon-based solvent, and a polar solvent in the presence of a nitrogen-based basic derivative.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: August 20, 1991
    Assignee: Elf France
    Inventors: Bernard Damin, Daniele Eber, Roger J. Gallo, Paul Maldonado, Simon Paley
  • Soil release polymer compositions having improved processability
    Patent number: 5041230
    Abstract: Polymeric soil release agents that have high viscosities when molten are difficult to process. Certain organic materials can be added to such agents to lower the viscosity and improve processing. Examples of such organic materials include fatty acids, some nonionic ethylene glycol derivatives, polyethylene or polypropylene glycols and their short alkyl chain ethers, certain polyhydroxy and alkyl ether solvents, and aryl ethers of propylene glycol.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: August 20, 1991
    Assignee: The Procter & Gamble Company
    Inventors: Thomas A. Borcher, Sr., Rodolfo Delgado, Toan Trinh
  • Stabilized solid thiocarbonate compositions and methods for making same
    Patent number: 5039327
    Abstract: Encapsulating particles of solid thiocarbonate salts, esters and complexes with air- and water-impermiable coatings produces compositions having long-term stability.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: August 13, 1991
    Assignee: Union Oil Company of California
    Inventors: Richard L. Pilling, Donald C. Young
  • Lubricant compositions
    Patent number: 5037568
    Abstract: The present invention provides a lubricant composition comprising a lubricating oil and, as multifunctional additive, at least one compound having the formula I: ##STR1## or amine salts thereof; wherein R.sub.1 and R.sub.2, independently, are hydrogen or methyl; n and m, independently, are 0 or 1; and X is SR.sub.3 or NR.sub.4 R.sub.5 wherein R.sub.3 is C.sub.12 -C.sub.20 linear or branched alkyl R.sub.4 and R.sub.5 are independently, C.sub.8 -C.sub.20 linear or branched alkyl provided that those compounds of formula I are excluded in which m and n are each 0, X is S-C.sub.8 -C.sub.20 linear or branched alkyl and R.sub.1 and R.sub.2 are as defined.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: August 6, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert M. O'Neil, Hugo Camenzind, Kay S. Groninger, John D. Payne
  • Aluminum complex grease and method of reducing the flammability of an aluminum complex grease
    Patent number: 5037563
    Abstract: The flammability of an aluminum complex grease can be reduced by incorporating a flame retardant amount of calcium oxide into the grease provided the calcium oxide has a Loss on Ignition value of less than 3.0.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: August 6, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Harry S. Pink, Heinrich J. Rohrhofer
  • Anti-oxidant products
    Patent number: 5037569
    Abstract: The use of aromatic amine or hindered phenols, and beta-thiodialkanol reaction products are described as being useful anti-oxidants.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: August 6, 1991
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Method and apparatus for desulfurizing and denitrifying coal
    Patent number: 5037450
    Abstract: An apparatus and process for desulfurizing and denitrifying coal by pyrolysis and subsequently treating the gaseous pyrolysis by-products with a solid sorbent to substantially reduce the release of SO.sub.x gases to acceptable levels. In one aspect of the invention, coal is pyrolyzed in the inner chamber of the desulfurization and denitrification apparatus to drive off the sulfur and nitrogen compounds contained therein. In another aspect of the invention, the gaseous by-products of pyrolysis are treated with a solid sorbent in the outer chamber of the desulfurization and denitrification apparatus to substantially desulfurize those gases. In a further aspect of the invention, the desulfurized gases, which contain nitrogen compounds, are combusted under controlled conditions to minimize the production of NO.sub.x gases.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: August 6, 1991
    Assignee: University of Cincinnati
    Inventors: Timothy C. Keener, Soon-Jai Khang
  • Dispersing agent for nonaqueous systems and a nonaqueous dispersion containing the same
    Patent number: 5037564
    Abstract: A dispersing agent for use in dispersing a finely divided solid powder in a nonaqueous dispersion medium and a dispersion prepared by using the dispersing agent. The dispersing agent of this invention is a low acid value lanolin fatty acid and/or a salt of the same. By means of this dispersing agent, there can be easily obtained a homogeneous and stable nonaqueous dispersion from which the incorporated solid particles will not separate out or settle even on prolonged standing. Therefore, this dispersing agent can be used advantageously in a broad range of applications such as coatings, dyes, pigments, inks, fuels, lubricating materials and so on.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: August 6, 1991
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Shoichi Nishizaki, Tominobu Mayuzumi, Takeshi Kawano
  • N-substituted thio alkyl phenothiazines
    Patent number: 5035817
    Abstract: This invention described phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: July 30, 1991
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Lubricating oil containing a nickel alkoxyalkylxanthate and zinc dialkyldithiophosphate
    Patent number: 5035815
    Abstract: The addition of a metal alkoxyalkylxanthate and a metal thiophosphate to a lubricating oil results in an unexpected synergistic improvement in the antiwear performance of the oil. Nickel ethoxyethylxanthate and zinc dialkyldithiophosphate are most preferred additives.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 30, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob J. Habeeb, Gopal H. Singhal, Rustom M. Billimoria, William H. Stover
  • Amide and sulfonic acid derivation of lower olefin oligomers
    Patent number: 5035818
    Abstract: Oligomers produced from lower alkenes by acidic zeolite catalyzed oligomerization can be converted to useful lubricant additives or lubricants by amidation and sulfonation of olefinic bonds in the oligomers by reaction with nitriles in the presence of strong acid catalyst whereby oligomer derivatives containing amide groups and sulfonic acid groups are produced. The products so produced from C.sub.20 + olefins exhibit favorable qualities as lubricants. The discovery is particularly applicable to the amidation and sulfonation of oligomers produced from lower olefins such as propylene by oligomerization using a ZSM-5 catalyst which has been surface deactivated.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: July 30, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Catherine S. H. Chen, Paul G. Rodewald
  • Oil compositions containing modified star polymers
    Patent number: 5035820
    Abstract: Lubricating oil compositions which contain hydrogenated diene star polymers grafted with N-vinylimidazole exhibit improved engine performance when prepared by grafting the polymer in an oil mixture containing at least 6% by weight of the star polymer. The grafting is accomplished by contacting the polymer with from about 3.0 to about 5.5 wt % N-vinylimidazole when N-vinylimidazole is the sole reactant and from about 1.0 to about 5.0 wt % N-vinylimidazole when N-vinylimidazole is used in combination with N-vinylpyrrolidone.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: July 30, 1991
    Assignee: Shell Oil Company
    Inventors: Robert B. Rhodes, Rudolf J. A. Eckert
  • Dispersant, VI improver, additive and lubricating oil composition containing same
    Patent number: 5035819
    Abstract: A lubricant additive that imparts enhanced dispersancy and antioxidancy has been prepared by reacting a copolymer or terpolymer with an acrylating agent followed by treatment with a dialiphatic or aromatic phosphate. The copolymer is prepared from ethylene and at least one (C.sub.3 -C.sub.10) alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said (C.sub.3 -C.sub.10) alpha-monoolefin and from about 0 to 15 mole percent of said polyene having a number average molecular weight ranging from about 5,000 to about 500,000.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: July 30, 1991
    Assignee: Texaco, Inc.
    Inventors: Thomas F. DeRosa, Benjamin J. Kaufman, Rosemary J. Jennejahn
  • N-substituted thio alkyl phenothiazines
    Patent number: 5034019
    Abstract: This invention describes phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: July 23, 1991
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Lubricating oil containing a thiodixanthogen and zinc dialkyldithiophosphate
    Patent number: 5034141
    Abstract: The addition of a thiodixanthogen and a metal thiophosphate to a lubricating oil results in an unexpected synergistic improvement in the antiwear performance of the oil. Octylthiodixanthogen and zinc dialkyldithiophosphate are most preferred additives.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 23, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Morton Beltzer, Karla S. Colle, Jacob J. Habeeb
  • Lubricating oil containing a nickel alkoxyalkylxanthate, a dixanthogen, and zinc dialkyldithiophosphate
    Patent number: 5034142
    Abstract: The addition of a metal alkoxyalkylxanthate, a dixanthogen, and a metal thiophosphate to a lubricating oil results in a synergistic improvement in the antiwear performance of the oil. Nickel ethoxyethylxanthate, diethoxyethyl dixanthogen, and zinc dialkyldithiophosphate are particularly preferred additives.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 23, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob J. Habeeb, Gopal H. Singhal
  • Lubricating oil compositions for food processing machines
    Patent number: 5034144
    Abstract: Lubricating oil compositions favorably used for food processing machines are disclosed. The oil compositions exhibit highly improved oxidation stability, wear resistance and rust prevention. Raw materials quite harmless to human bodies can be used in the production of said lubricating oil composition which comprises (I) as the base oil, a saturated fatty acid glyceride represented by the following general formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each a straight-chain alkyl group and (II) as an essential component, a fatty acid in an amount of 0.001 to 5% by weight, based on the total composition.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: July 23, 1991
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Ryoji Ohgake, Mitsuo Okada, Hiroyuki Takashima