Patents Assigned to Ethyl Petroleum Additives, Inc.
  • Patent number: 4885365
    Abstract: Compounds having the formula: ##STR1## wherein: a. R is an organic radical selected from an alkyl group, an alkenyl group, an aryl group or an aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms;b. R.sup.1 is hydrogen or an organic radical selected from an alkyl group or alkenyl group, an aryl or aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms;c. R.sup.2 and R.sup.3 are the same or different alkyl groups containing from 1 to 32, more preferably 4 to 8, carbon atoms eachare effective antiwear and antioxidant additives in lubricating oil.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: December 5, 1989
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4876375
    Abstract: Compounds having the formula: ##STR1## wherein: a. each of R, R.sup.2 and R.sup.4 when taken singly is a hydrogen atom, an alkyl group containing from 1 to about 15 carbon atoms, an aryl group containing from 6 to about 15 carbon atoms or a cycloalkyl group containing from 4 to about 10 carbon atoms;b. each of R.sup.1 and R.sup.3 when taken singly is a hydrogen atom, an alkyl group containing from 1 to about 15 carbon atoms; an aryl group containing from 6 to about 15 carbon atoms; a cycloalkyl group containing from 4 to about 10 carbon atoms or an alkenyl group containing from 2 to about 10 carbon atoms or R.sup.1 and R.sup.3 taken together form the group --CHYCY.dbd.CY-- in which Y is a hydrogen atom or a methyl group of R.sup.1 together with R.sup.2 form an alkylidene group containing from 1 to about 6 carbon atoms;c. R.sup.5 is a hydrogen atom or an alkyl group containing from 1 to about 15 carbon atoms;d. R.sup.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: October 24, 1989
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4855074
    Abstract: A homogeneous concentrate suitable for use as an additive for lubricating oils is formed from a long chain succinimide and a benzotriazole by heating a mixture of these materials in the presence of water or alkoxylated amines or dihydrocarbylphosphites or dihydrocarbyl phosphonates (or mixtures of such materials) and then distilling the volatile component, from the resulting product. When this heating step is conducted in the additional presence of a boronating agent such as boric acid and the volatile component, is removed by distillation, not only is a compatible additive concentrate formed, but the long chain succinimide is boronated in the process.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: August 8, 1989
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Andrew G. Papay, Joseph P. O'Brien
  • Patent number: 4836942
    Abstract: Compounds or mixtures of compounds having the formulae: ##STR1## wherein R is an alkyl group containing from 1 to 20 carbon atoms, n represents a number selected from the class consisting of zero and the integers from 1 through 6, R' represents a member selected from the group consisting of the hydrogen atom and those groups represented by R and R" is an aliphatic hydrocarbon group are effective antiwear and antioxidant additives in lubricating oils.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: June 6, 1989
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4795583
    Abstract: Improved durability of shift-feel frictional characteristics in automotive transmission fluids is achieved by use of an initially substantially inert (friction-wise) compound--viz., an aliphatic tertiary amine having one long chain and two short chain groups--incorporated into a formulation which is otherwise balanced for initially good shift-feel frictional properties. When the fluid is subjected to the oxidative and thermal degradation conditions encountered under normal service conditions, the friction modifiers that give the fluid good initial shift-feel frictional properties degrade. However, as this occurs the aliphatic tertiary amine has itself been transformed by a mechanism that activates it so that in its new form it acquires the ability to provide good shift-feel properties. Thus this additive serves as a time-activated or delayed action substitute for the friction modifiers that have been degraded during service.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: January 3, 1989
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: Andrew G. Papay
  • Patent number: 4639324
    Abstract: Lubricating oils having improved antioxidant and anti-wear properties are obtained by adding a minor amount of a reaction product made by reacting at least one aliphatic olefinically unsaturated hydrocarbon containing from about 8 to 36 carbon atoms (preferably an .alpha.-olefin) concurrently with sulfur and at least one fatty acid ester (preferably an oil such as cottonseed oil) to obtain a reaction intermediate and reacting this intermediate with additional sulfur and a dimer of cyclopentadiene or lower C.sub.1-4 alkyl substituted cyclopentadiene dimers, such as methylcyclopentadiene dimer.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: January 27, 1987
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4582939
    Abstract: Catalytic process for the production of mercaptans by contacting unsaturated hydrocarbons with hydrogen sulfide in the presence of a sulfonic acid cation exchange resin catalyst.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: April 15, 1986
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Edmund F. Perozzi, Andrew G. Papay
  • Patent number: 4553979
    Abstract: Coking in and around the injector nozzles of indirect injection compression ignition engines is reduced by means of distillate fuel with which has been blended suitable concentration of:(a) organic nitrate ignition accelerator, and(b) the condensation product of a phenol, preferably a high molecular weight alkylphenol, and aldehyde and an amine having a H-N< group.Also described are additive mixtures of (a) and (b) for use in distillate fuels in amounts sufficient to reduce the coking tendencies of such fuels when used in the operation of indirect injection compression ignition engines.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: November 19, 1985
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: J. Vincent Hanlon, Denis L. Lenane, James B. Retzloff
  • Patent number: 4511366
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) a polymer of a C.sub.18 polyunsaturated aliphatic monocarboxylic acid (e.g. linoleic dimer and/or trimer) and (B) the reaction product of (i) a polyalkylene polyamine, (ii) a C.sub.18 monounsaturated aliphatic monocarboxylic acid (e.g. oleic acid), and (iii) an alkenyl succinic anhydride, in which the alkenyl group contains 8 to 30 carbon atoms.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: April 16, 1985
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Aubrey L. Burrows, Paul B. Mabley, Steven J. Field