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Inventor:
Bryant; Charles P.
Address:
Euclid, OH
No. of patents:
23
Patents:












Patent Number Title Of Patent Date Issued
6881780 Dispersant-viscosity improvers for lubricating oil compositions April 19, 2005
A polyacrylate ester, and more particularly a polymethacrylate ester based dispersant-viscosity improver for lubricating oil compositions. Specifically, the dispersant viscosity improvers of this invention are nitrogen-containing copolymers comprising units derived from (A) from about
6639034 Dispersant-viscosity improvers for lubricating oil compositions October 28, 2003
A process for preparing nitrogen-containing copolymers useful as dispersant-viscosity improvers for lubricating oil compositions, additive concentrates and lubricating oil compositions are described.
6331603 Nitrogen containing acrylic copolymers December 18, 2001
A process for preparing nitrogen-containing copolymers useful as dispersant-viscosity improvers for lubricating oil compositions, additive concentrates and lubricating oil compositions are described.
6294628 Dispersant-viscosity improvers for lubricating oil compositions September 25, 2001
A polyacrylate ester, and more particularly a polymethacrylate ester based dispersant-viscosity improver for lubricating oil compositions. Specifically, the dispersant viscosity improvers of this invention are nitrogen-containing copolymers comprising units derived from(A) from about 5%
6271184 Viscosity improvers for lubricating oil-compositions August 7, 2001
A copolymer comprising units derived from (a) methaciylic acid esters containing from about 9 to about 25 carbon atoms in the ester group and (b) methacrylic acid esters containing from 7 to about 12 carbon atoms in the ester group, said ester groups having 2-(C.sub.1-4 alkyl)-substi
6124249 Viscosity improvers for lubricating oil compositions September 26, 2000
A copolymer comprising units derived from (a) methacrylic acid esters containing from about 9 to about 25 carbon atoms in the ester group and (b) methacrylic acid esters containing from 7 to about 12 carbon atoms in the ester group, said ester groups having 2-(C.sub.1-4 alkyl)-substi
5969068 Dispersant-viscosity improvers for lubricating oil compositions October 19, 1999
A polyacrylate ester, and more particularly a polymethacrylate ester based dispersant-viscosity improver for lubricating oil compositions. Specifically, the dispersant viscosity improvers of this invention are nitrogen-containing copolymers comprising units derived from(A) from about 5%
5821313 Dispersant-viscosity improvers for lubricating oil compositions October 13, 1998
A process for preparing nitrogen-containing copolymers useful as dispersant-viscosity improvers for lubricating oil compositions, additive concentrates and lubricating oil compositions are described.
5595680 Electrorheological fluids containing polyanilines January 21, 1997
Non-aqueous electrorheological fluids are described which comprise a major amount of a hydrophobic liquid phase and a minor amount of a dispersed particulate phase of a polyaniline prepared by polymerizing aniline in the presence of an oxidizing agent and from about 0.1 to about 1.6 mole
5470498 Polymeric salts as dispersed particles in electrorheological fluids November 28, 1995
Electrorheological fluids which exhibit good high temperature performance are made using as the disperse phase a salt of a polymer of an alkenyl substituted aromatic comonomer such as styrene and a maleic acid comonomer or derivative thereof.
5437806 Electrorheological fluids containing polyanilines August 1, 1995
Non-aqueous electrorheological fluids are described which comprise a major amount of a hydrophobic liquid phase and a minor amount of a dispersed particulate phase of a polyaniline prepared by polymerizing aniline in the presence of an oxidizing agent and from about 0.1 to about 1.6 mole
5435932 Electrorheological fluids containing eletronically conductive polymers July 25, 1995
Non-aqueous electrorheological fluids are described which comprise a major amount of a hydrophobic liquid phase and a minor amount of a dispersed particulate phase comprising conductive polymers selected from the group consisting of polypyrroles, polyphenylenes, polyacetylenes, polyv
5336423 Polymeric salts as dispersed particles in electrorheological fluids August 9, 1994
Electrorheological fluids which exhibit good high temperature performance are made using as the disperse phase a salt of a polymer of an alkenyl substituted aromatic comonomer such as styrene and a maleic acid comonomer or derivative thereof.
4846985 Antioxidant compositions July 11, 1989
A composition is disclosed which comprises:(A) a compound represented by the formula ##STR1## wherein Ar.sup.1 and Ar.sup.2 are independently mononuclear or polynuclear, substituted or unsubstituted aromatic groups; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or
4604221 Nitrogen-containing esters and lubricants containing them August 5, 1986
A nitrogen-containing ester of a carboxy-containing interpolymer which is particularly useful as a pour point depressant is disclosed. The interpolymer has a reduced specific viscosity of from about 0.05 to about 1 and is derived from at least two monomers, one of said monomers being a
4454059 Nitrogenous dispersants, lubricants and concentrates containing said nitrogenous dispersants June 12, 1984
Compositions useful as lubricant and fuel dispersants are prepared by reacting an intermediate (A) of the formulae ##STR1## wherein each R is hydrogen or a lower hydrocarbon-based group, Ar is an aromatic moiety having at least one aliphatic substituent of at least 6 carbon atoms
4343740 Hydroxylalkyl hydroxy-aromatic condensation products as fuel and lubricant additives August 10, 1982
Condensation products made by reacting an .alpha.-hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are useful as additives for fuels and lubricants. The
4285824 Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives August 25, 1981
Condensation products made by reacting an .alpha.-hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are useful as additives for fuels and lubricants. The
4284414 Mixed alkyl esters of interpolymers for use in crude oils August 18, 1981
Mixed alkyl esters made by reacting a mixture of two or more of certain monohydric alcohols with interpolymers derived from (i) .alpha.,.beta.-unsaturated dicarboxylic acids or derivatives thereof and (ii) vinyl aromatic monomers having up to 12 carbon atoms are useful modifiers for
4273891 Hydrocarbon-substituted methylol phenols June 16, 1981
Hydroxy aromatic compositions containing (a) a hydroxyl group bonded directly to a carbon of an aromatic nucleus, (b) a hydrocarbon-based substituent of at least about 50 aliphatic carbon atoms bonded directly to a carbon atom of an aromatic nucleus, (c) at least one methylol or lower
4205960 Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives June 3, 1980
Condensation products made by reacting an .alpha.-hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are useful as additives for fuels and lubricants. The
4186139 Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives January 29, 1980
Condensation products made by reacting an alpha-hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are useful as additives for fuels and lubricants. The to
4163730 Hydroxyalkyl hydroxy-aromatic condensation products as lubricant additives August 7, 1979
Condensation products made by reacting an alpha-hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are useful as additives for fuels and lubricants. The to










 
 
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