Patents Represented by Attorney, Agent or Law Firm Krishna G. Banerjee
  • Patent number: 5873917
    Abstract: The present invention is directed to a fuel additive composition containing (i) a polyether alcohol of the formula ##STR1## wherein R is hydrogen or a hydrocarbyl group of 1 to about 30 carbon atoms; R.sup.1 is hydrogen or a hydrocarbyl group of 1 to 5 carbon atoms or mixtures thereof provided that no more than 10 mole % of R.sup.1 is hydrogen and where the polyether alcohol is soluble in gasoline; and x is a number from about 4 to about 40; (ii) a hydrocarbylphenol having 1-3 hydrocarbyl groups such that the total weight average molecular weight of the hydrocarbyl groups is about 250 to about 6000; and (iii) optionally a third component containing a nitrogen-containing dispersant; wherein the weight ratio of the polyether alcohol to the hydrocarbylphenol is about 3:1 to about 1:20. The compositions are useful in reducing intake valve deposit and do not contribute to the increase in combustion chamber deposit in port fuel injected engines.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: February 23, 1999
    Assignee: The Lubrizol Corporation
    Inventor: Daniel T. Daly
  • Patent number: 5863875
    Abstract: A coating additive composition containing the combination of a) at least one non-crosslinked product made by the reaction of an amine and a carboxylic acid, the product containing at least two hydrocarbyl groups each having about 12 to about 100 carbon atoms; and (ii) at least one fluoropolymer. The additive composition is useful as a nonflatting slip-enhancing agent in both in solvent-based and powder coatings. The cured coatings exhibit lower coefficient of friction and substantial gloss retention.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: January 26, 1999
    Assignee: The Lubrizol Corporation
    Inventor: Thomas F. Steckel
  • Patent number: 5851966
    Abstract: Compositions of matter for use in oils and fuels are disclosed. The compositions arise from reaction products (C) formed by reacting substituted carboxylic acylating agents (A) with carboxylic reactants (B). The reactant (A) is usually a polyolefin substituted succinic anhydride or acid which is reacted with (B). (B) is usually a glyoxylic compound. Carboxylic reaction products (C) may further be reacted to form succinimide dispersants, esters or other derivatives. Products (C) may also be reacted with an .alpha.-.beta. unsaturated compound to form second carboxylic reaction products.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: December 22, 1998
    Assignee: The Lubrizol Corporation
    Inventors: Mark R. Baker, Paul E. Adams, Jeffry G. Dietz
  • Patent number: 5843331
    Abstract: Electrorheological systems of improved temperature range are obtained by including within the system a solid polymer insoluble in a low molecular weight activating material and in the hydrophobic medium of the fluid. The polymer contains hydrophilic functionality, and in the polymer a portion of the low molecular weight polar activating material is sorbed in an amount which reversibly increases with increasing temperature.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: December 1, 1998
    Assignee: The Lubrizol Corporation
    Inventors: Barton J. Schober, Joseph W. Pialet, Robert A. Pollack, Denise R. Clark
  • Patent number: 5830243
    Abstract: The present invention is directed to a composition made by reacting A) an aldehyde of 1 to 12 carbon atoms or a reactive equivalent thereof; and B) at least one etheramine represented by the formulaR.sup.2 ?O(CH.sub.2 CH(R)O).sub.n --R.sup.1 --NH.sub.2 !.sub.y(I)wherein each n is a number from 0 to about 50; each R is selected from the group consisting of hydrogen, hydrocarbyl groups of 1 to about 16 carbon atoms, and mixtures thereof; each R.sup.1 is selected from the group consisting of a hydrocarbylene group containing 2 to about 18 carbon atoms and a group represented by the formula ##STR1## wherein both R.sup.6 and R.sup.7 are hydrocarbylene groups of about 3 to about 10 carbon atoms and p is a number from 1 to 4; y is 1, 2, or 3; and each R.sup.2 is a hydrocarbyl group having a valence of y and containing 1 to about 50 carbon atoms when y is 1 and 1 to about 18 carbon atoms when y is 2 or 3; y is 1, 2, or 3; provided that when n is zero, y is 1.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: November 3, 1998
    Assignee: The Lubrizol Corporation
    Inventors: Thomas J. Wolak, Daniel T. Daly, Kurt F. Wollenberg, William D. Abraham, Paul E. Adams, Mitchell M. Jackson
  • Patent number: 5811580
    Abstract: Hydrocarbyl-substituted amides can be prepared in a catalyzed Ritter reaction by contacting a nitrile with a hydrocarbylating agent, in the presence of an acidified clay as the catalyst, under conditions conducive to the formation of the hydrocarbyl-substituted amide.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: September 22, 1998
    Assignee: The Lubrizol Corporation
    Inventor: Douglas C. Rhubright
  • Patent number: 5780401
    Abstract: The present invention is directed to coating additives useful as non-flatting slip-enhancing agents. The additives are the non cross-linked reaction products of (a) an amine represented by the formula NR.sup.1 R.sup.2 H wherein each R is independently selected from the group consisting of hydrocarbyl groups and hydroxyalkyl groups; or by the formula D--(NGH).sub.y wherein D is a multivalent organic radical having 2 to about 30 carbon atoms; each G independently is hydrogen, a hydrocarbyl group, or hydroxyalkyl group; and y is at least 2; provided that if D is an organic radical containing 2 carbon atoms and y is 2, at least one G must be a hydrocarbyl group of 1 to 30 carbon atoms; and (b) a carboxylic acid of the formula B--(COOH).sub.z, or a reactive equivalent thereof, wherein B is a direct link between two COOH groups, a mono- or a multivalent organic radical, and z is 1-5; wherein the resulting product contains at least 2 hydrocarbyl groups each having about 12 to about 30 carbon atoms.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: July 14, 1998
    Assignee: The Lubrizol Corporation
    Inventor: Thomas F. Steckel