1
Jacob Emert, Albert Rossi, Salvatore Rea, Jeffrey W Frederick, Mahn W Kim: Polymers derived from ethylene and 1-butene for use in the preparation of lubricant dispersant additives. Exxon Chemical Patents, Harvey L Cohen, March 12, 1996: US05498809 (151 worldwide citation)

The invention pertains to oil soluble copolymers derived from ethylene and 1-butene which have a number average molecular weight between about 1,500 and 7,500, at least about 30 percent of all polymer chains terminated with ethylvinylidene groups, and ethylene-derived content of not greater than abo ...


2
Albert Rossi, Jacob Emert, David Edward Gindelberger, Jon Edmond Stanat, James Peter Stokes, Jaimes Sher: Polymers derived from olefins useful as lubricant and fuel oil additives, processes for preparation of such polymers and additives and use thereof (PT-1267). Exxon Chemical Patents, September 22, 1998: US05811379 (60 worldwide citation)

Polymers (including copolymers) derived from one or more olefins, such including ethylene and C.sub.3 -C.sub.20 .alpha.-olefins such as propylene and 1-butene, which polymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.0; (b) an average of at least 5 bra ...


3
William B Diana, Joseph V Cusumano, Keith R Gorda, Jacob Emert, William B Eckstrom, David C Dankworth, Jon E Stanat, James P Stokes: Dispersant additives and process. Exxon Chemical Patents, K R Walton, J B Murray Jr, August 10, 1999: US05936041 (52 worldwide citation)

The invention pertains to improved lubricating oil dispersants wherein a fractionating polymer is prepared prior to functionalization (e.g., in the Koch reaction) for making dispersant additives. In one aspect, it was discovered that by fractionating a polymer to remove light hydrocarbon and unreact ...


4
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%.


5
Albert Rossi, Jacob Emert, David Edward Gindelberger, Jon Edmond Stanat, James Peter Stokes, Jaimes Sher: Polymers derived from olefins useful as lubricant and fuel oil additives, processes for preparation of such polymers and additives and use thereof. Exxon Chemical Patents, January 25, 2000: US06017859 (40 worldwide citation)

Polymers (including copolymers) derived from one or more olefins, such including ethylene and C.sub.3 -C.sub.20 .alpha.-olefins such as propylene and 1-butene, which polymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.0; (b) an average of at least 5 bra ...


6
Darrell W Brownawell, Warren A Thaler, Cruise K Jones, Jacob Emert, Abhimanyu O Patil: Method of reducing sludge and varnish precursors in lubricating oils. Exxon Chemical Patents, Mary M Allen, December 26, 1995: US05478463 (35 worldwide citation)

A method, composition and filter for reducing the presence of sludge or varnish precursors in a lubricating oil circulating within an internal combustion engine. The lubricating oil containing sludge or varnish precursors is contacted with discrete particles of an oil insoluble, oil wettable compoun ...


7
Dennis G Peiffer, Kenneth Lewtas, Robert D Lundberg, Pamela J Wright, Antonio G Lazarus, Jacob Emert: Copolymers of ethylene .alpha.-olefin macromers and dicarboxylic monomers and derivatives thereof, useful as additives in lubricating oils and in fuels. Exxon Chemical Patents, August 8, 2000: US06100224 (32 worldwide citation)

A copolymer comprising units of an unsaturated dicarboxylic monomer and an ethylene .alpha.-olefin macromer is disclosed. The macromer is an unsaturated ethylene .alpha.-olefin polymer comprising units of from ethylene and at least one .alpha.-olefin represented by the formula CH.sub.2 .dbd.CHR.sup. ...


8
Jacob Emert, Albert Rossi, Salvatore Rea, Jeffrey William Frederick, Mahn Won Kim: Polymers derived from ethylene and 1-butene for use in the preparation of lubricant disperant additives. Exxon Chemical Patents, February 29, 2000: US06030930 (28 worldwide citation)

The invention pertains to oil soluble copolymers derived from ethylene and 1-butene which have a number average molecular weight between about 1,500 and 7,500, at least about 30 percent of all polymer chains terminated with ethylvinylidene groups, and ethylene-derived content of not greater than abo ...


9
Jacob Emert, Malcolm Waddoups, Robert D Lundberg: Dispersant additives mixtures for oleaginous compositions. Exxon Chemical Patents, J B Murray Jr, September 5, 1989: US04863624 (25 worldwide citation)

Novel dispersant mixtures are provided, having improved lubricating oil performance characteristics, comprising nitrogen or ester containing dispersants selected from the group consisting of oil soluble salts, amides, imides, oxazoline and esters or mixtures thereof, wherein a first dispersant compr ...


10
Jacob Emert, Istvan T Horvath, Richard H Schlosberg, Warren A Thaler, David A Young, Stephen Zushma: Saturated polyolefins having terminal aldehyde or hydroxy substituents and derivatives thereof. Exxon Chemical Patents, E C Bakun, July 7, 1998: US05777041 (24 worldwide citation)

A saturated polymer having a terminal aldehyde or hydroxy substituent which may be used directly or in a derivative form as a dispersant for both fuel and lubricating oil compositions, wherein the saturated polymer has a M.sub.n of about 300 to 10,000, and is derived from a polyolefin which is deriv ...