Patents Examined by Cynthia A. Prezlock
  • Patent number: 4784782
    Abstract: Various heterocyclic compounds have been discovered that impart improved fuel economy and friction modification to lubricant and fuel compositions. These hetrocyclic compounds of the invention preferably contain nitrogen and may be further reacted with hydrocarbyl carboxylic acid acylating reactants or hydrocarbyl phenolic reactants to give higher molecular materials. These higher molecular weight materials have higher oil-solubility and impart dispersancy properties to lubricant and fuel compositions.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: November 15, 1988
    Assignee: The Lubrizol Corporation
    Inventors: Joseph W. Pialet, Paul E. Adams
  • Patent number: 4759861
    Abstract: A metal working lubricant is disclosed for effective use in the working of metallic materials, particularly in cold rolling, which comprises the components of [I] an alkali metal salt, an alkaline earth metal salt, or a salt or amide of an amine or alkanolamine of a carbon number of 1 to 24, each said salt and said amide being derived from at least one acid selected from the group consisting of (1) an aliphatic mono- or di-carboxylic acid of 8 to 22 carbon atoms, or a polycarboxylic acid thereof, (2) a petroleum sulfonic acid, and (3) a naphthenic acid; [II] an alkylene glycol of the formula HO--C.sub.n H.sub.2n O.sub.m--H where m is an integer of 1 to 3, and n is an integer of 3 to 10; [III] water; and [IV] a mineral oil, a synthetic lubricant, a fat, a fatty oil or a combination thereof.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: July 26, 1988
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Shigetoshi Ogura, Katsumi Seki, Hiroyuki Takashima
  • Patent number: 4744798
    Abstract: Benzophenone derivatives, e.g., benzophenone tetracarboxylic dianhydride, and esters or mixtures thereof when reacted with various hydrocarbyl amines provide additives that are highly useful as fuel detergents, intake valve and exhaust gas valve deposit reducers.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 17, 1988
    Assignee: Mobil Oil Corporation
    Inventor: Harry J. Andress
  • Patent number: 4744921
    Abstract: The present invention is directed toward a method for preparing Group II metal overbased sulfurized alkylphenols. In particular, the present invention employs a sulfurization catalyst in the preparation of Group II metal overbased sulfurized alkylphenols. Use of a sulfurization catalyst in this preparation results in a product generally characterized as having lower crude sediment, a higher Total Base Number and lower viscosity than a similar product prepared without using a sulfurization catalyst.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: May 17, 1988
    Assignee: Chevron Research Company
    Inventor: Thomas V. Liston
  • Patent number: 4743389
    Abstract: N-alkyl amides, particularly N-alkyl formamides, are effective friction-reducing additives for use in lubricants and fuels.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: May 10, 1988
    Assignee: Mobil Oil Corporation
    Inventors: Milton Braid, Andrew G. Horodysky
  • Patent number: 4742180
    Abstract: A method for dehydrogenating dehydrogenatable hydrocarbons which comprises contacting said hydrocarbons with an oxide of Pr having combined therewith an amount of alkali and/or alkaline earth metal which is sufficient to improve the selectivity to dehydrogenated hydrocarbon products. The oxide is reduced by the contact which is carried at about 500.degree. to 1000.degree. C. Reducible oxides of Pr are regenerated by oxidizing the reduced composition with oxygen. Solids prepared from the oxide Pr.sub.6 O.sub.11 are particularly effective in the process.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: May 3, 1988
    Assignee: Atlantic Richfield Company
    Inventor: Anne M. Gaffney
  • Patent number: 4741819
    Abstract: A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: May 3, 1988
    Assignee: Chevron Research Company
    Inventors: Richard C. Robinson, Robert L. Jacobson, Leslie A. Field
  • Patent number: 4738769
    Abstract: A process for converting liquid or semi-liquid hydrocarbon charges to lighter fractions comprises a first step (a) heating droplets jets of the charge introduced into a pyrolysis chamber by surrounding them with parallel jets of hot solid particles, of relatively large size, of a heat carrier material, not substantially in contact with the droplet jets, so as to maintain a temperature of 700.degree.-1600.degree. C., and introducing a gas so as to obtain a pressure from 1 to 150 bars. A second step involves (b) separating the gaseous fraction from the solid particles. Thereafter (c) at least a portion of the solid particles are heated and fed back to step (a). The gaseous fraction is (d) cooled by means of a cold gas so as to recover light hydrocarbons therefrom.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: April 19, 1988
    Assignee: Institut Francais du Petrole
    Inventors: Christian Busson, Jacques Alagy, Jean-Paul Euzen, Pierre Galtier
  • Patent number: 4737302
    Abstract: The invention relates to lubricant compositions comprising(a) one or more mineral oils or synthetic oils and(b) 0.05 to 5% by weight of at least one compound of formulae I, II and III ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in claim 1; and(c) further optional lubricant additives.Some of these compounds are new and can be prepared by Mannich reaction from the appropriate 2-mercaptobenzothiazoles, an aldehyde R.sup.2 --CHO and a primary or secondary mono- or diamine. These Mannich bases are useful additives for lubricants for reducing friction, wear, corrosion and oxidation.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: April 12, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Hugo Camenzind, Emyr Phillips
  • Patent number: 4737300
    Abstract: The invention relates to material containing aldosemarcaptals of the formula I ##STR1## wherein n can be an integer from 2 to 6, and wherein R.sup.1 and R.sup.2 are identical or different, and in each case are C.sub.1 -C.sub.18 -alkyl, which is unsubstituted, substituted or interrupted by --O-- or --S--, or are --(CH.sub.2).sub.r --CO--N(C.sub.1 -C.sub.17 -alkyl).sub.2, r being 1 or 2, or are phenyl, benzyl or --(CH.sub.2).sub.r --CO--O--R.sup.3, in which r can be 1 or 2 and R.sup.3 is an alkali metal or C.sub.1 -C.sub.14 -alkyl; also wherein R.sup.1 and R.sup.2 are --CH.sub.2 --CH(OH)--R.sup.4, in which R.sup.4 is hydrogen, or C.sub.1 -C.sub.16 -alkyl, unsubstituted or substituted by --OH, or --CH.sub.2 --Y--(C.sub.1 -C.sub.15 -alkyl), in which Y is --O-- or --S--; or wherein R.sup.1 and R.sup.2 together form --(CH.sub.2).sub.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: April 12, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Hermann O. Wirth, Hans-Helmut Friedrich
  • Patent number: 4737595
    Abstract: A method for dehydrogenating dehydrogenatable hydrocarbons which comprises contacting said hydrocarbons with a solid comprising at least one reducible oxide of at least one metal which oxides when contacted with hydrocarbons at the temperature are reduced and produce dehydrogenated hydrocarbon products and water, the solid being associated with a silica support. The oxide is reduced by the contact which is carried at about 500.degree. to 100.degree. C. The reducible metal oxides are regenerated by oxidizing the reduced composition with oxygen.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: April 12, 1988
    Assignee: Atlantic Richfield Company
    Inventors: C. Andrew Jones, John J. Leonard, John A. Sofranko
  • Patent number: 4737303
    Abstract: A covalently bonded reaction product of:(a) a sulfomaleic anhydride adduct with an unsaturated hydrocarbon polymer; and(b) a polar molecule containing at least one primary or secondary amino group.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: April 12, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Warren A. Thaler, Stanley J. Brois, Francis N. Ferrara
  • Patent number: 4737299
    Abstract: Lubricating greases suitable for use at high operating temperatures which contain a complex thickening system consisting of a lithium soap of a hydroxy fatty acid, an alkali salt of boric acid and a dilithium salt of a branched alkyl chain dicarboxylic acid.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: April 12, 1988
    Assignee: Texaco Technologie Europa GmbH
    Inventors: Hans D. Grasshoff, Herbert Maak
  • Patent number: 4734210
    Abstract: The invention relates to lubricant compositions comprising at least one compound of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 are independently alkyl, alkenyl, cycloalkyl, aryl or aralkyl; or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring.The N,N-disubstituted S-thiiranylmethylcarbamothioates of formula I are particularly suitable for use as antiwear additives and extreme pressure additives for mineral and synthetic lubricants.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: March 29, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Hugo Camenzind, Paul Dubs
  • Patent number: 4734213
    Abstract: Solutions of ethylene-propylene copolymers grafted with vinyl containing monomers, maleic anhydride or ethylenically unsaturated acids including functionalized derivatives thereof, reacted with polyols, polyamines and hydroxamines, as well as hydrogenated butadiene or isoprene copolymers, which solutions have haze-forming tendencies in mineral oil and are generally useful as multifunctional lubricating oil additives, are reduced in haze-forming tendencies by treatment with 0.5 to 25 wt. % of an alkyl hydroxy benzene compound, such as nonyl or dodecyl phenol.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: March 29, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Phillip W. Brewster, Clinton R. Smith
  • Patent number: 4731498
    Abstract: In a continuous catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons in which a lower molecular weight hydrocarbon containing reaction gas is contacted in a reaction zone with a higher molecular weight hydrocarbon synthesis catalyst under C.sub.2 + hydrocarbon synthesis conditions, the improvement comprising increasing the production of higher molecular weight hydrocarbons by the addition of an effective amount of aluminum metal vapor to the reaction gas, said synthesis conditions including a temperature greater than 1000.degree. C. and a gas hourly space velocity of greater than 3200 hr.sup.-1.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: March 15, 1988
    Assignee: Chevron Research Company
    Inventors: Louis Devries, P. R. Ryason
  • Patent number: 4729769
    Abstract: Improved gasolines contain, as a detergent additive, the reaction product of coconut oil and diethanolamine or dimethylaminopropylamine.
    Type: Grant
    Filed: May 8, 1986
    Date of Patent: March 8, 1988
    Assignee: Texaco Inc.
    Inventors: Raymond C. Schlicht, Mark D. Levin, Sheldon Herbstman, Rodney L. Sung
  • Patent number: 4728450
    Abstract: A torque grease comprising:(A) 100 parts by weight of a polyorganosiloxane represented by the general formula: ##EQU1## wherein R.sup.1 is a C.sub.(1-12) monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals, and substituted or unsubstituted aryl radicals; a equals 1.9 to 2.7; n is a positive number; and(B) 10 to 200 parts by weight of a polyorganosilsesquioxane represented by the general formula:R.sup.2 SiO.sub.3/2wherein R.sup.2 is a monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals and substituted or unsubstituted aryl radicals.
    Type: Grant
    Filed: June 21, 1984
    Date of Patent: March 1, 1988
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Masanori Toya, Hiroshi Kimura
  • Patent number: 4728451
    Abstract: Lubricating oil compositions containing additives for dispersancy and detergency are provided. The additives are poly(oxyalkylene) aminohydrocarbyloxyhydrocarbyl carbamates, also referred to as polyether aminoether carbamates.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 1, 1988
    Assignee: Chevron Research Company
    Inventor: Frank Plavac
  • Patent number: 4727206
    Abstract: This invention relates to the aromatization of methane rich hydrocarbon feedstock by contact with a gallium loaded zeolite containing a Group VIIB metal or metal compound as catalyst. The preferred metal is rhenium. The reaction proceeds at a temperature between 600.degree.-800.degree. C. in the absence of oxygen. The reaction products are useful as gasoline blending components.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: February 23, 1988
    Assignee: British Petroleum Company p.l.c.
    Inventors: David M. Clayson, Timothy K. McNiff