Patents Represented by Attorney T. V. Kowalchyn
  • Patent number: 5514291
    Abstract: The novel polymers of the present invention are prepared by reacting a hydroxy aromatic compound containing at least one --OH group in the ring, an aldehyde and amino-substituted polymer (e.g., an ethylene alpha-olefin interpolymer substituted by primary amino or secondary amino groups) to form an oil soluble Mannich base derivative useful as antioxidant dispersant viscosity modifier additive in oleaginous compositions such as lubricating oils and fuels. Preferred aromatic compounds are phenols such as 2,6-di-t-butylphenol or 2,6-dimethylphenol. Preferred amino-substituted interpolymers comprise amino-substituted ethylene propylene norbornene terpolymers.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: May 7, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu O. Patil, Robert D. Lundberg, Sudhin Datta
  • Patent number: 5446221
    Abstract: The present invention is directed to a lubricating oil composition exhibiting improved viscosity index comprising lubricating oil and a viscosity improving effective amount of ethylene alpha-olefin polymer comprising monomer units derived from ethylene and at least one alpha-olefin represented by the formula H.sub.2 C.dbd.CHR.sup.1 wherein R.sup.1 is an alkyl group of from 1 to 18 carbon atoms, wherein said polymer has a number average molecular weight of from above 25,000 to about 500,000, wherein an average of at least about 30 percent of the polymer chains contain terminal ethenylidene unsaturation, and wherein said polymer is prepared in the presence of a catalyst system comprising at least one metallocene and an alumoxane compound.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: August 29, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Mark J. Struglinski
  • Patent number: 5439607
    Abstract: Oleaginous compositions, particularly lubricating oil compositions, exhibiting improved antioxidant properties containing a viscosity index improving amount of a viscosity index improver-dispersant comprised of the reaction products of: (a) an oil soluble ethylene copolymer comprising from about 15 to 90 wt. % ethylene and from about 10 to 85 wt. % of at least one C.sub.3 to C.sub.28 alpha-olefin, having a number average molecular weight of from about 20,000 to 500,000, grafted with an ethylenically unsaturated carboxylic acid material having 1 or 2 acid or anhydride moieties; (b) an organic polyamine having at least two primary amino groups; (c) an aldehyde; (d) a hydroxy aromatic reactant having at least one --OH-- group attached to the aromatic ring; and, optionally, (e) an amount effective to provide a V.I. improver-dispersant exhibiting improved low temperature viscometric properties of high functionality long chain hydrocarbyl substituted dicarboxylic acid material having a functionality of at least 1.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: August 8, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Abhimanyu O. Patil
  • Patent number: 5382632
    Abstract: The novel polymers of the present invention are prepared by graft polymerization of at least one aromatic nitrogen-containing monomer onto an amino-substituted polymer (e.g., an ethylene alpha-olefin interpolymer substituted by primary amino or secondary amino groups). Preferred aromatic nitrogen-containing moieties are illustrated by aniline, and preferred amino-substituted interpolymers comprise amino-substituted ethylene propylene norbornene terpolymers. The polymers of this invention are oil soluble and are useful as dispersant and antioxidant additives in oleaginous compositions and are further useful in electrical, textile and other applications.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: January 17, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu O. Patil, Sudhin Datta, Robert D. Lundberg
  • Patent number: 5376728
    Abstract: The novel polymers of the present invention are prepared by graft polymerization of at least one aromatic nitrogen-containing monomer onto a low T.sub.g amino-substituted polymer (e.g., an ethylene alpha-olefin interpolymer substituted by primary amino or secondary amino groups). Preferred aromatic nitrogen-containing moieties are illustrated by aniline, and preferred low T.sub.g amino-substituted interpolymers comprise amino-substituted ethylene propylene norbornene elastomeric terpolymers. The polymers of this invention are useful in electrical, textile and other applications.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: December 27, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu O. Patil, Sudhin Datta, Robert D. Lundberg
  • Patent number: 5366647
    Abstract: The present invention is directed to an oil-soluble oleaginous composition additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of from above 20,000 to about 500,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to oleaginous compositions such as lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful oleaginous composition additives, e.g., as multifunctional viscosity index improvers.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: November 22, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Antonio Gutierrez, Robert D. Lundberg, Won R. Song
  • Patent number: 5356551
    Abstract: Oleaginous compositions, particularly lubricating oil compositions, exhibiting improved low temperature viscometric properties containing a viscosity index improving amount of a V.I.-dispersant comprised of the reaction products of:(a) an oil soluble ethylene copolymer comprising from about 15 to 90 wt. % ethylene and from about 10 to 85 wt. % of at least one C.sub.3 to C.sub.28 alpha-olefin, having a number average molecular weight of from about 5,000 to 500,000, grafted with an ethylenically unsaturated carboxylic acid material having 1 or 2 acid or anhydride moieties;(b) an organic polyamine having at least two primary amino groups or a polyol; and(c) an amount effective to provide a V.I. improver-dispersant exhibiting improved low temperature viscometric properties of high functionality long chain hydrocarbyl substituted dicarboxylic acid material having a functionality of at least 1.2.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: October 18, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David Y. Chung, John E. Johnston
  • Patent number: 5348673
    Abstract: Composition of matter useful as multifunctional viscosity index improver for lubricating oil comprising reaction product of: (i) (a) molecular weight degraded ethylene-alpha-olefin copolymer obtained by degrading copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.8, and said degraded copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; (ii) about C.sub.50 to about C.sub.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: September 20, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
  • Patent number: 5328624
    Abstract: Oil-soluble, derivatized ethylene copolymers derived from about 15 to 90 wt. % ethylene, and one or more C.sub.3 to C.sub.28 alpha-olefins, e.g. propylene, which are grafted, preferably solution-grafted under an inert atmosphere and at elevated temperatures and in the presence of a high-temperature decomposable free-radical initiator, with an ethylenically-unsaturated dicarboxylic acid material and thereafter reacted with a polyamine having at least two primary amine groups, e.g. an alkylene polyamine such as diethylene triamine, to form carboxyl-grafted polymeric imide, usually maleimide, derivatives are subsequently reacted with a C.sub.12 to about C.sub.18 hydrocarbyl substituted dicarboxylic acid anhydride, preferably a C.sub.12 to about C.sub.18 hydrocarbyl substituted succinic anhydride, to yield an oil-soluble stable imide of said carboxyl-grafted copolymeric imide whereby oil solutions thereof are characterized by minimal viscosity change over an extended period of time.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: July 12, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventor: David Y. Chung
  • Patent number: 5328622
    Abstract: An oil soluble dispersant comprising the reaction products of:(1) at least one of (i) oil soluble salts, amides, imides, oxazolines, esters, or mixtures thereof of long chain hydrocarbyl substituted mono- and dicarboxylic acids or their anhydrides or esters, (ii) long chain hydrocarbon having a polyamine attached directly thereto, and (iii) long chain hydrocarbyl-substituted Mannich condensation products containing at least one reactive group selected from reactive amino groups and reactive hydroxyl groups; and(2) at least one monoepoxide monounsaturated linking reactant.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: July 12, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jacob Emert, Antonio Gutierrez, Robert D. Lundberg
  • Patent number: 5312556
    Abstract: A multifunctional viscosity index improver for lubricating oils comprising reaction product of:(i) (a) degraded ethylene-alpha-olefin copolymer obtained by degrading undegraded copolymer of ethylene and at least one other alpha-olefin monomer, said undegraded copolymer comprising intramolecularly heterogeneous copolymer chain containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: May 17, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David Y. Chung, Mark J. Struglinski
  • Patent number: 5310490
    Abstract: The present invention relates to hydrogenated block copolymers of butadiene and at least one other diene, preferably isoprene. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: May 10, 1994
    Assignee: Exxon Chemical Products Inc.
    Inventors: Mark J. Struglinski, Gary W. Ver Strate, Lewis J. Fetters
  • Patent number: 5310814
    Abstract: The present invention relates to hydrogenated polybutadiene comprising monomeric units of 1,4-butadiene and 1,2-butadiene addition products. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: May 10, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Mark J. Struglinski, Gary W. VerStrate, Lewis J. Fetters
  • Patent number: 5290868
    Abstract: An oil soluble nitrogen containing grafted degraded ethylene copolymers useful as multifunctional viscosity index improvers or modifiers, such as VI improver-dispersant additives. The nitrogen containing grafted degraded ethylene copolymers are grafted with an ethylenically unsaturated carboxylic acid grafting material and the grafted degraded ethylene copolymers are then reacted with at least one polyamine containing one primary amine group and at least one or more secondary amine groups.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: March 1, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
  • Patent number: 5290461
    Abstract: Composition of matter useful as multifunctional viscosity index improver for lubricating oil comprising reaction product of:(i) (a) degraded ethylene-alpha-olefin copolymer obtained by degrading copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: March 1, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
  • Patent number: 5278240
    Abstract: The novel polymers of the present invention are prepared by graft polymerization of at least one aromatic nitrogen-containing monomer onto an amino-substituted polymer (e.g., an ethylene alpha-olefin interpolymer substituted by primary amino or secondary amino groups). Preferred aromatic nitrogen-containing moieties are illustrated by aniline, and preferred amino-substituted interpolymers comprise amino-substituted ethylene propylene norbornene terpolymers. The polymers of this invention are oil soluble and are useful as dispersant and antioxidant additives in oleaginous compositions and are further useful in electrical, textile and other applications.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: January 11, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu O. Patil, Sudhin Datta, Robert D. Lundberg
  • Patent number: 5278241
    Abstract: The novel polymers of the present invention are prepared by graft polymerization of at least one aromatic nitrogen-containing monomer onto a low T.sub.g amino-substituted polymer (e.g., an ethylene alpha-olefin interpolymer substituted by primary amino or secondary amino groups). Preferred aromatic nitrogen-containing moieties are illustrated by aniline, and preferred low T.sub.g amino-substituted interpolymers comprise amino-substituted ethylene propylene norbornene elastomeric terpolymers. The polymers of this invention are useful in electrical, textile and other applications.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: January 11, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu O. Patil, Sudhin Datta, Robert D. Lundberg
  • Patent number: 5275747
    Abstract: The present invention is directed to an oil-soluble oleaginous composition additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of from above 20,000 to about 500,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to oleaginous compositions such as lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful oleaginous composition additives, e.g., as multifunctional viscosity index improvers.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: January 4, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Antonio Gutierrez, Robert D. Lundberg, Won R. Song
  • Patent number: 5273671
    Abstract: Oleaginous compositions, particularly lubricating oil compositions, exhibiting improved antioxidant properties containing a viscosity index improving amount of a viscosity index improver-dispersant comprised of the reaction products of:(a) an oil soluble ethylene copolymer comprising from about 15 to 90 wt. % ethylene and from about 10 to 85 wt. % of at least one C.sub.3 to C.sub.28 alpha-olefin, having a number average molecular weight of from about 5,000 to 500,000, grafted with an ethylenically unsaturated carboxylic acid material having 1 or 2 acid or anhydride moieties;(b) an organic polyamine having at least two primary amino groups;(c) an aldehyde;(d) a heterocyclic nitrogen reactant having at least one --N (H)-- group in the heterocyclic ring; and, optionally,(e) an amount effective to provide a V.I. improver-dispersant exhibiting improved low temperature viscometric properties of high functionality long chain hydrocarbyl substituted dicarboxylic acid material having a functionality of at least 1.2.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: December 28, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu O. Patil, Robert D. Lundberg
  • Patent number: 5273668
    Abstract: The present invention is directed to an oil-soluble lubricating oil additive comprising at least one adduct of (A) a polyolefin of 700 to 5,000 number average molecular weight substituted nitrogen- or ester-containing ashless dispersant and (B) a bis-keto/thioketo compound.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: December 28, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jacob Emert, Antonio Gutierrez, Robert D. Lundberg