Patents by Inventor Dale Carr
Dale Carr 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).
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Patent number: 8865015Abstract: A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.Type: GrantFiled: October 9, 2012Date of Patent: October 21, 2014Assignee: Chemtura CorporationInventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Edward T. Hessell, Roberto Urrego
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Patent number: 8852449Abstract: Lubricant compositions comprising certain mixtures of esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and higher pentaerythritol oligomers are ideally suited for use with CO2 as refrigerant in heat transfer devices provided that at least 30% by weight of the esters are esters of pentaerythritol oligomers containing 4 or more pentaerythritol monomer units and wherein a majority of the alkylcarboxylate groups are straight chain C3-6 alkanoyl groups, such as n-pentanoyl. Said mixture of alkylcarboxylate esters are shown to not only have higher than expected viscosity and exceptional CO2 miscibility, but also possess excellent lubricity, film building properties and load bearing properties even as part of a lubricant/CO2 solution.Type: GrantFiled: April 6, 2011Date of Patent: October 7, 2014Assignee: Chemtura CorporationInventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Robert Urrego, Edward T. Hessell
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Publication number: 20140097379Abstract: A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.Type: ApplicationFiled: October 9, 2012Publication date: April 10, 2014Inventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Edward T. Hessell, Roberto Urrego
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Patent number: 8518295Abstract: A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. greater than or equal to 200 cSt and a viscosity index of greater than or equal to 100. The ester comprises the reaction product of (a) a polyhydric alcohol component comprising at least 50 mole % of penterythritol, and (b) a carboxylic acid component comprising: (i) at least one linear or branched monocarboxylic acid having 2 to 7 carbon atoms; (ii) at least one branched monocarboxylic acid having 8 to 15 carbon atoms; and (iii) at least one polycarboxylic acid having 2 to 8 carbon atoms; wherein the ratio of the number of acid groups derived from the monocarboxylic acid(s) (i) to the number of acid groups derived from the monocarboxylic acid(s) (ii) is between about 0.9 and about 1.1 and the number of acid groups derived from the polycarboxylic acid(s) (iii) is between about 15% and about 25% of the total number of acid groups derived from the carboxylic acids (i), (ii) and (iii).Type: GrantFiled: September 16, 2010Date of Patent: August 27, 2013Assignee: Chemtura CorporationInventors: Dale Carr, Jeffrey Hutter, Edward T. Hessell, Richard Kelley, Roberto Urrego
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Patent number: 8419968Abstract: A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. less than or equal to 22 cSt and a viscosity index of greater than or equal to 140. The ester comprises a reaction product of (a) at least one polyhydric alcohol having at least 2 primary hydroxyl groups, (b) at least one monocarboxylic acid having 2 to 15 carbon atoms and (c) at least one polycarboxylic acid having 2 to 15 carbon atoms, wherein the number of acid groups derived from the polycarboxylic acid(s) is at least 25% of the total number of acid groups derived from the monocarboxylic and polycarboxylic acids.Type: GrantFiled: October 8, 2009Date of Patent: April 16, 2013Assignee: Chemtura CorporationInventors: Dale Carr, Jeffrey Hutter, Edward T. Hessell, Richard Kelley
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Patent number: 8318647Abstract: A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.Type: GrantFiled: January 21, 2010Date of Patent: November 27, 2012Assignee: Chemtura CorporationInventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Edward T. Hessell, Roberto Urrego
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Publication number: 20110240910Abstract: Lubricant compositions comprising certain mixtures of esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and higher pentaerythritol oligomers are ideally suited for use with CO2 as refrigerant in heat transfer devices provided that at least 30% by weight of the esters are esters of pentaerythritol oligomers containing 4 or more pentaerythritol monomer units and wherein a majority of the alkylcarboxylate groups are straight chain C3-6 alkanoyl groups, such as n-pentanoyl. Said mixture of alkylcarboxylate esters are shown to not only have higher than expected viscosity and exceptional CO2 miscibility, but also possess excellent lubricity, film building properties and load bearing properties even as part of a lubricant/CO2 solution.Type: ApplicationFiled: April 6, 2011Publication date: October 6, 2011Applicant: CHEMTURA CORPORATIONInventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Roberto Urrego, Edward T. Hessell
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Publication number: 20110079749Abstract: A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. greater than or equal to 200 cSt and a viscosity index of greater than or equal to 100. The ester comprises the reaction product of (a) a polyhydric alcohol component comprising at least 50 mole % of penterythritol, and (b) a carboxylic acid component comprising: (i) at least one linear or branched monocarboxylic acid having 2 to 7 carbon atoms; (ii) at least one branched monocarboxylic acid having 8 to 15 carbon atoms; and (iii) at least one polycarboxylic acid having 2 to 8 carbon atoms; wherein the ratio of the number of acid groups derived from the monocarboxylic acid(s) (i) to the number of acid groups derived from the monocarboxylic acid(s) (ii) is between about 0.9 and about 1.1 and the number of acid groups derived from the polycarboxylic acid(s) (iii) is between about 15% and about 25% of the total number of acid groups derived from the carboxylic acids (i), (ii) and (iii).Type: ApplicationFiled: September 16, 2010Publication date: April 7, 2011Applicant: CHEMTURA CORPORATIONInventors: Dale Carr, Jeffrey Hutter, Edward T. Hessell, Richard Kelley, Roberto Urrego
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Publication number: 20100190672Abstract: A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.Type: ApplicationFiled: January 21, 2010Publication date: July 29, 2010Applicant: CHEMTURA CORPORATIONInventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Edward T. Hessell, Roberto Urrego
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Publication number: 20100181523Abstract: A working fluid comprising (a) a refrigerant comprising carbon dioxide and (b) a poly(neopentylpolyol)ester composition produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at a mole ratio of carboxyl groups to hydroxyl groups of less than 1:1 to form a partially esterified composition. The partially esterified poly(neopentyl)polyol composition is then reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol)ester composition.Type: ApplicationFiled: January 8, 2010Publication date: July 22, 2010Applicant: Chemtura CorporationInventors: Richard Kelley, Dale Carr, Jeffrey Hutter, Edward T. Hessell
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Publication number: 20100117022Abstract: A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. less than or equal to 22 cSt and a viscosity index of greater than or equal to 140. The ester comprises a reaction product of (a) at least one polyhydric alcohol having at least 2 primary hydroxyl groups, (b) at least one monocarboxylic acid having 2 to 15 carbon atoms and (c) at least one polycarboxylic acid having 2 to 15 carbon atoms, wherein the number of acid groups derived from the polycarboxylic acid(s) is at least 25% of the total number of acid groups derived from the monocarboxylic and polycarboxylic acids.Type: ApplicationFiled: October 8, 2009Publication date: May 13, 2010Applicant: CHEMTURA CORPORATIONInventors: Dale Carr, Jeffrey Hutter, Edward T. Hessell, Richard Kelley
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Publication number: 20070184989Abstract: An improved additive package including at least a polymeric amine antioxidants and a borated extreme pressure/antiwear agent for a polyol ester lubricant suitable for use in high temperature applications is provided. The lubricant fluid includes a base stock that is the reaction product of a polyol and monocarboxylic acid mixture including a major proportion of 3,5,5-trimethylhexanoic acid (iso-C9 acid). The additive package may be added in up to about 20 percent by weight of the lubricant to provide a viscosity of the lubricant at 40° C. of at least about 140 cSt and at 100° C. of no less than about 15.0 cSt. Greases are formed by adding a thickener to a high viscosity lubricating fluid.Type: ApplicationFiled: December 18, 2006Publication date: August 9, 2007Inventors: Dale Carr, Thomas Schaefer, Jeffrey Hutter
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Publication number: 20050014660Abstract: A high viscosity synthetic ester base stock of about ISO 68 to 400 is formed from a neopentylpolyol condensed with at least one monocarboxylic acid selected from the group consisting of linear acids having between 4 to 10 carbon atoms and branched chain acids having from 5 to 10 carbon atoms in an excess of hydroxyl to carboxylic acid groups to form a partial polyneopentylpolyol ester that is further reacted with the same or similar acid to form a high viscosity polyneopentylpolyol ester. Lubricants formed from the base stocks have satisfactory miscibility with standard highly or fully fluorinated refrigeration fluids.Type: ApplicationFiled: August 9, 2004Publication date: January 20, 2005Inventors: Dale Carr, Michael McHenry, Jeremy Styer