1
John B Gardiner, Martyn N Dick: Viscosity index improver--dispersant additive useful in oil compositions. Exxon Chemical Patents, F T Johmann, W G Muller, M B Kapustij, October 25, 1988: US04780228 (101 worldwide citation)

Hydrocarbon polymers such as ethylene copolymers may be reacted with unsaturated nitrogen-containing monomers or unsaturated carboxylic acids in the presence of a free radical catalyst such as a peroxide or azo free radical initiator and a chain stopping agent, e.g. a mercaptan to inhibit excessive ...


2
David Y Chung, Mark J Struglinski: Visosity index improver. Exxon Chemical Patents, M B Kapustij, M E Alter, November 26, 1991: US05068047 (67 worldwide citation)

Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chai ...


3
Frank J Chen, Jacob Emert, Robert D Lundberg, Gregory C Giffin: Process for preparing polybutenes having enhanced reactivity using boron trifluoride catalysts (PT-647). Exxon Chemical Patents, J B Murray Jr, M B Kapustij, July 18, 1989: US04849572 (46 worldwide citation)

There is provided a process for preparing polybutenes having enhanced reactivity using a BF.sub.3 catalyst and an immediate quench procedure and controlled polymerization times of 12 to 40 minutes in combination with isobutylene conversions of at least 70%.


4
Frank J Chen: Organo-Al-chloride catalyzed poly-n-butenes process. Exxon Chemical Patents, J B Murray Jr, M B Kapustij, August 28, 1990: US04952739 (40 worldwide citation)

Poly-n-butene is prepared from a mixed C.sub.4 hydrocarbon feedstream containing less than about 5 wt. % isobutylene using an organo-aluminum chloride-HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a v ...


5
David Y Chung: Viscosity index improver-dispersant additive. Exxon Chemical Patents, F T Johmann, M B Kapustij, April 5, 1988: US04735736 (31 worldwide citation)

Oil soluble hydrocarbon polymers, useful as V.I. improvers, such as ethylene copolymer, preferably ethylene-propylene copolymer, are grafted with an unsaturated acid material, such as maleic anhydride, preferably by solid state grafting followed by reaction with a polyamine, preferably a tertiary-pr ...


6
Gary Ver Strate, Ricardo Bloch, Mark J Struglinski, John E Johnston, Roger K West: Viscosity modifier polymers (E-98). Exxon Chemical Patents, J B Murray Jr, M B Kapustij, February 13, 1990: US04900461 (30 worldwide citation)

The present invention relates to novel copolymers of alpha-olefins comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains.


7
David Y Chung: Ethylene copolymer viscosity index improver dispersant additive useful in oil compositions. Exxon Chemical Patents, M B Kapustij, February 7, 1989: US04803003 (29 worldwide citation)

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 ...


8
Robert D Tack, Sarah L Pearce, Albert Rossi: Middle distillate compositions with improved cold flow properties. Exxon Chemical Patents, F T Johmann, R A Maggio, M B Kapustij, December 15, 1987: US04713088 (27 worldwide citation)

The low temperature properties of a distillate petroleum fuel oil boiling in the range 120.degree. C. to 500.degree. C., and whose 20% and 90% distillation points differ by less than 100.degree. C., and/or whose Final Boiling Point is in the range 340.degree. C. to 370.degree. C. are improved by the ...


9
Terence Colclough, Andrew J D Ritchie: Lubricating oil compositions and additives for use therein. Exxon Chemical Patents, M B Kapustij, E R Skula, August 3, 1993: US05232614 (27 worldwide citation)

Substituted para-phenylene diamines have been found to be effective antioxidants capable of protecting crankcase lubricating oils from thickening and sludge formation after prolonged exposure to oxygen at elevated temperature.


10
Thomas J McCrary: High temperature peroxide induced telomerization processes for grafting vinyl nitrogen containing monomers onto olefin polymers. Exxon Research & Engineering Company, F T Johmann, M B Kapustij, March 7, 1989: US04810754 (23 worldwide citation)

There are disclosed concentartion controlled, high temperature solution telomerization processes for graft copolymerizing ethylene alpha-olefin copolymers or forming acrylate copolymers, uti.lizing dialkyl peroxides at temperatures of 185.degree.-250.degree. C. wherein a molar excess of 3-10 moles o ...