Patents by Inventor Rodney L. Sung

Rodney L. Sung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5516442
    Abstract: A rust and corrosion inhibiting marine diesel engine lubricating oil additive is provided which comprises a mixture of:(a) an oligomeric polythiocyclic imide represented by the formula ##STR1## wherein R and R.sup.1 each are a (C.sub.1 -C.sub.50) saturated or unsaturated aliphatic group and n is an integer of 0 to 5; an oligomeric amine represented byR"--NH.sub.2where R" is dodecyl or a (C.sub.12 -C.sub.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: May 14, 1996
    Assignee: Texaco Inc.
    Inventors: Joseph M. Russo, Rodney L. Sung, Benjamin J. Kaufman, Thomas F. Derosa
  • Patent number: 5491256
    Abstract: A composition of matter comprising ureas, biurets or allophanates structurally represented, respectively, by ##STR1## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; ##STR2## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; or ##STR3## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: February 13, 1996
    Assignee: Texaco Inc.
    Inventors: Thomas F. Derosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5468262
    Abstract: A liquid jet fuel composition comprising:(a) a major portion of a liquid fuel; and(b) a minor effective portion of a thermal stabilizing additive prepared by(i) reacting a polyamine, an aldehyde and a phenol containing active hydrogen to form a phenol - aldehyde - amine condensate; and(ii) reacting said phenol - aldehyde - amine condensate and a succinic acid anhydride bearing a polyolefin - derived substituent containing residual unsaturation, thereby forming a phenol - aldehyde amine Mannich condensate polyamine succinimide product additive; and(iii) recovering said product additive.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: November 21, 1995
    Assignee: Texaco Inc.
    Inventors: William P. Acker, Robert T. Hahn, Thomas J. Mach, Rodney L. Sung
  • Patent number: 5366518
    Abstract: A motor fuel additive composition comprising the imide reaction product of a hydrocarbyl-substituted dibasic acid anhydride and a random backbone polyoxyalkylene diamine having the formula: ##STR1## in which R' represents hydrogen or an alkyl radical having from 1 to 2 carbon atoms and the random backbone polyoxyalkylene radical consists of from about 5 to 65 weight percent of ethylene oxide and n has a value from 5 to 200 and a haze and emulsion resistant and ORI-inhibited motor fuel composition is provided.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: November 22, 1994
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Joseph M. Russo, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5227083
    Abstract: A lubricating oil additive with rust and haze inhibiting properties which comprises the reaction product of an alkyl sarcosine represented by the figure ##STR1## where R is a (C.sub.3 -C.sub.30) alkyl radical and poly (propylene oxide). A lubricating oil composition containing the additive is also provided.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: July 13, 1993
    Assignee: Texaco Inc.
    Inventors: Joseph M. Russo, Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5226925
    Abstract: A composition of matter comprising a mixture of:a) p-nonyl-co-p-phenylcalix[8]arene monoallophanate;b) p-nonyl-co-p-phenylcalix[8]arene diallophanate;c) p-nonyl-co-p-phenylcalix[8]arene triallophanate;d) p-nonyl-co-p-phenylcalix[8]arene tetraallophanate;e) p-nonyl-co-p-phenylcalix[8]arene pentallophanate;f) p-nonyl-co-p-phenylcalix[8]arene hexaallophanate;g) p-nonyl-co-p-phenylcalix[8]arene heptaallophanate; andh) p-nonyl-co-p-phenylcalix[8]arene octaallophanate.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: July 13, 1993
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5219955
    Abstract: A composition of matter comprising a mixture of:a) 1-(poly[1-hydroxyl-(2,6-phenylene methylene)])-3,5-dihydroxy-s-triazine;b) cyclo-1,3-(poly[1-hydroxyl-2,6-phenylenemethylene)])-5-hydroxy-s-triazine;c) [1-(phenoxy)-3-(phenoxy')-5-hydroxy-s-triazine-]poly[1-hydroxyl-(2,6-pheny lene methylene)];d) a ladder polymer containing randomly interdispersed s-triazine 'steps'; ande) a star polymer containing randomly interdispersed s- triazine connector sites for poly[1-hydroxyl-(2,6-phenylene methylene)] groups but where one or more pendant hydroxyl-s-triazine functions are also present.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: June 15, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. DeRosa, Benjamin J. Kaufman
  • Patent number: 5211721
    Abstract: Motor fuel compositions comprising gasoline are improved to control octane requirement increase (ORI) by including an ester of a carboxylic acid and a polyether polyol, preferably a polyether polyol including oxyethylene, oxypropylene and oxybutylene segments.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: May 18, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Daniel T. Daly
  • Patent number: 5207891
    Abstract: A composition of matter useful as an asphaltene dispersant, comprising a mixture of:(a) poly[P,P'-(propylene oxide-400)phosphite) poly[di(propylene oxide--400)diol)]]-P,P diasphalenate;(b) poly[P,P'-(propylene oxide-400)phosphite -poly[di(propylene oxide--1000) diol)]]-P,P'-diasphalenate;(c) Poly[P,P'-(propylene oxide-400)phosphite) -poly(propylene oxide-400-poly(propylene oxide-1000)diol)]]-P-P'-diasphalenate(d) Poly[P,P'-(propylene oxide-1000)phosphite -poly[di(propylene oxide-400) diol)]]-P,P'-diasphalenate;(e) poly[P,P'-(propylene oxide-1000)phosphite) poly[di(propylene oxide-1000)diol)]]-P,P'-diasphalenate;(f) poly[P,P'(propylene oxide-1000)phosphite) poly[di([propylene oxide-400-poly (propylene oxide-1000)diol)]]-P,P'-diasphaltenate;(g) cyclo[P,P'-di(polypropylene oxide -400)phosphite]-P,P'-diasphaltenate;(h) cyclo[P,P'-di-(polypropylene oxide-1000) phosphite]-P,P'-diasphaltenate;(i) cyclo[P,P'-(polypropyleneoxide-400) -(polypropyleneoxide-1000)-phosphite]-P,P'diasphaltenate;(j) poly[(dipropyleneoxide-4
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: May 4, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. DeRosa, David A. Storm, Benjamin J. Kaufman
  • Patent number: 5202056
    Abstract: A composition of matter useful as an asphaltene dispersant, comprising a mixture of:(a) poly[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-400) alcohol;(b) poly[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-400) alcohol;(c) poly[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-1000) alcohol;(d) poly[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-1000) alcohol;(e) poly{star[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-400)} alcohol;(f) poly{star[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-400)} alcohol;(g) poly{star[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-1000) } alcohol; and(h) poly{star[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-1000)} alcohol.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: April 13, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. Derosa, David A. Storm, Benjamin J. Kaufman
  • Patent number: 5199959
    Abstract: A method has been developed to solubilize hydroxy S-triazines containing at least one hydroxy function in diesel fuel and to enhance their overall thermal stability. The products which result from the full or partial encapsulation of hydroxy-S-triazine with calix[8]arene have unique and novel properties and reduce or eliminate nitrogen oxides level in diesel fuel.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: April 6, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. Derosa, Benjamin J. Kaufman
  • Patent number: 5171462
    Abstract: Mixtures of block alkoxy co- or terpolymer hydrocarboxylates and aminopolyazole increase the oxidation and corrosion resistance of lubricants, particularly diesel engine oil.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: December 15, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman, Ronald L. O'Rourke
  • Patent number: 5167845
    Abstract: A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersnacy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolyer of ethylene propylene and a third monomer onto which an ethylenically unsaturated carboxylic acid or acid anhydride has been grafted. The polymer is imidized with aminoheterocyclics and hydroxylalkylated using an aldehyde or ketone an alkylation; than alkylated using mercaptoheterocyclics.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 1, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman, Rosemary J. Jennejahn
  • Patent number: 5152909
    Abstract: A railway diesel crankcase lubricant composition comprising a major portion of a diesel lubricating oil and a minor amount of, as an oxidation and corrosion inhibiting additive, a condensate product prepared by the process comprising:(a) reacting a dibasic acid anhydride with an oligomeric isobutylene to form a succinic anhydride;(b) reacting the succinic anhydride with an N-alkyl alkylene diamine to produce a succinimide-amine;(c) reacting the succinimide-amine with a polyaromatic diisocyanate to produce a phenylurea isocyanophenylmethane;(d) reacting the isocyanophenylmethane with a heterocyclic compound containing a thiadiazole nucleus to a condensation product of a mercaptothiadiazole-phenylmethane; and(e) recovering the condensation product.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: October 6, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5133781
    Abstract: A method of compatibilization asphaltenes containing bituminous liquids which process comprises:a) reacting an asphaltene with phosphorous trichloride in the presence of a liquid to form a phosphochlorinated asphaltene containing from about 0.01 wt % to about 20 wt. % phosphorous;b) reacting the phosphochlorinated asphaltene with an equimolar amount of aliphatic or aromatic alcohols and phenols selected from the group consisting of:i) an aliphatic alcohol;ii) a naphthyl alcohol;iii) an alkyl quinizarin;iv) an oligomeric mixed polyether aliphatic terminal diol; andv) an oligomeric polyalkene terminal diol to produce a compatibilized asphaltene; andc) recovering the compatibilized asphaltene product.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 28, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman, Eugene M. Jao
  • Patent number: 5131921
    Abstract: Motor fuel compositions comprising gasoline are improved to control octane requirement increase (ORI) by including an ester of an N-acyl sarcosinate acid or salt and a polyether polyol including oxyalkylene units selected from oxypropylene and/or oxybutylene.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: July 21, 1992
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Daniel T. Daly
  • Patent number: 5132005
    Abstract: A method of compatibilization asphaltenes containing bituminous liquids which process comprises:a) reacting an asphaltene with phosphorous trichloride to form a phosphochlorinated asphaltene containing from about 0.01 wt % to about 20 wt % phosphorous;b) reacting the phosphochlorinated asphaltene with an equimolar amount of aliphatic or aromatic amines and polyamines selected from the group consisting of:(i) a piperzine;(ii) an aliphatic amine;(iii) an alkyl piperdize;(iv) an aligomeric mixed polyether aliphatic terminal diamine;(v) an oligomeric polyether aliphatic terminal amine;(vi) an oligermic polyether aliphatic terminal triamine;(vii) a substituted aromatic polyether terminal amine; and(viii) an oligomeric or polymeric amine to produce a capatibilized asphaltene; and(c) recovering the asphaltene product.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. Derosa, Rodney L. Sung, Benjamin J. Kaufman, Eugene M. Jao
  • Patent number: 5110491
    Abstract: A railway diesel crankcase lubricant composition comprising a major portion of a diesel lubricating oil and a minor amount of, as an oxidation and corrosion inhibiting agent, a condensate product prepared by the process comprising:(a) reacting a dibasic acid anhydride, separately, with:(i) a oligomeric isobutylene, and(ii) 2,5-dimercapto-1,3,4,-thiadiazole, to produce, respectively, oligomeric(isobutylene-g-succinic anhydride) and 2-thio-(5-mercapto-1,3,4-thiadiazole) succinic anhydride;(b) reacting both of the succinic anhydrides with pentamethylenediamine to produce the [2-thio-(5-mercapto-1,3,4-thiadiazole)]-[oligomeric(isobutylene-g-succinic )]-pentamethylenetetraamine-bis succinimide product; and(c) recovering the bis-succinimide product.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: May 5, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. Derosa, Rodney L. Sung, Benjamin J. Kaufman, Ronald L. O'Rourke
  • Patent number: 5075361
    Abstract: Asphaltenes isolated from bituminous products that have been bulk phosphochlorinated using phosphorous trichloride and amidated using aminoacids or aminoacid salts show enhanced dissolution properties when added to bituminous liquids or bituminous liquids blended with gasoline.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 24, 1991
    Assignee: Texaco Inc.
    Inventors: Thomas F. Derosa, Rodney L. Sung, Benjamin J. Kaufman, Eugene M. Jao
  • Patent number: 5061291
    Abstract: A motor fuel composition which inhibits engine ORI and intake valve deposit formation comprises a mixture of hydrocarbons boiling in the range of 90.degree.-450.degree. F. and the reaction product of a hydrocarbyl-substituted dibasic acid anhydride and a polyoxyalkylene diamine; it may optionally additionally comprise a polymeric component which is a polyolefin polymer, copolymer, or the corresponding aminated or hydrogenated polymer or copolymer, or mixtures thereof, of a C.sub.2 -C.sub.10 hydrocarbon. Motor fuel compositions of the instant invention show improved ORI control in comparison with typical commercial fuel compositions. The instant invention is advantageous in that it may be produced and stored as a precipitation-resistant concentrate composition.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: October 29, 1991
    Assignee: Texaco Inc.
    Inventor: Rodney L. Sung