Patents by Inventor Edward T. Hessell
Edward T. Hessell 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: 9683158Abstract: High viscosity working fluids comprising a fluorinated olefin refrigerant, such as a hydrofluoro-olefin refrigerant, and a high viscosity polyol ester comprising a select mixture of alkylcarboxy esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and pentaerythritol oligomers are provided.Type: GrantFiled: May 24, 2016Date of Patent: June 20, 2017Assignee: LANXESS SOLUTIONS US, INC.Inventors: Travis Benanti, Roberto Urrego, Edward T. Hessell
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Publication number: 20160376485Abstract: High viscosity working fluids comprising a fluorinated olefin refrigerant, such as a hydrofluoro-olefin refrigerant, and a high viscosity polyol ester comprising a select mixture of alkylcarboxy esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and pentaerythritol oligomers are provided.Type: ApplicationFiled: May 24, 2016Publication date: December 29, 2016Inventors: Travis Benanti, Roberto Urrego, Edward T. Hessell
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Patent number: 9505967Abstract: Working fluids comprising a refrigerant blend comprising a fluorinated alkane and a fluorinated olefin refrigerant, and a polyol ester lubricant composition comprising a mixture of alkylcarboxy esters of mono-pentaerythritol, di-pentaerythritol, tri-pentaerythritol and pentaerythritol oligomers, wherein at least 10 wt % of all polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups.Type: GrantFiled: July 10, 2015Date of Patent: November 29, 2016Assignee: Chemtura CorporationInventors: Travis Benanti, Edward T Hessell, Roberto Urrego
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Publication number: 20160009974Abstract: Working fluids comprising a refrigerant blend comprising a fluorinated alkane and a fluorinated olefin refrigerant, and a polyol ester lubricant composition comprising a mixture of alkylcarboxy esters of mono-pentaerythritol, di-pentaerythritol, tri-pentaerythritol and pentaerythritol oligomers, wherein at least 10 wt % of all polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups.Type: ApplicationFiled: July 10, 2015Publication date: January 14, 2016Inventors: Travis Benanti, Edward T. Hessell, Roberto Urrego
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Patent number: 9133380Abstract: Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a lubricant containing these select neopentyl polyol esters and having a kinematic viscosity at 40° C. of 32 cSt or higher. Specifically, the lubricant composition of the invention comprises a mixture of alkylcarboxy esters of neopentyl polyols, wherein at least 10 wt % of all neopentyl polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups, and wherein a majority of the alkylcarboxylate groups of the alkylcarboxy esters of neopentyl polyols are pentanoyl groups wherein at least 15% of the pentanoyl groups are branched.Type: GrantFiled: February 14, 2013Date of Patent: September 15, 2015Assignee: Chemtura CorporationInventors: Travis Benanti, Edward T. Hessell
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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: 8691109Abstract: Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a polyol ester lubricant composition having a kinematic viscosity at 40° C. of from 32 to 120 cSt, said lubricant composition comprising C5-10 alkylcarboxy esters di-pentaerythritol wherein at least 40 mol %, typically more, of the alkylcarboxylate groups of the alkylcarboxy esters are pentanoyl groups.Type: GrantFiled: February 14, 2013Date of Patent: April 8, 2014Assignee: Chemtura CorporationInventors: Edward T. Hessell, Travis Benanti
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Patent number: 8685271Abstract: Polyol ester lubricant compositions comprising predominately straight chain C5-10 alkylcarboxlate esters of neopentyl alcohols, for example, straight chain C5-10 alkylcarboxlate esters of one or more of trimethylol propane, pentaerythritol, di-pentaerythritol, tri-pentaerythritol or pentaerythritol oligomers, and working fluids comprising said lubricant compositions and a hydrocarbon refrigerant, suitable for heat transfer devices including refrigeration and air conditioning systems are provided. The polyol ester lubricant compositions have a kinematic viscosity at 40° C. of 22-125 cSt and a viscosity index of greater than 140, and are characterized by having very high lubricity, excellent load carrying properties and excellent low temperature properties.Type: GrantFiled: February 5, 2013Date of Patent: April 1, 2014Assignee: Chemtura CorporationInventors: Dale D. Carr, Jeffrey A. Hutter, Richard Kelley, Roberto Urrego, Edward T. Hessell
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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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Publication number: 20130207022Abstract: Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a polyol ester lubricant composition having a kinematic viscosity at 40° C. of from 32 to 120 cSt, said lubricant composition comprising C5-10 alkylcarboxy esters di-pentaerythritol wherein at least 40 mol %, typically more, of the alkylcarboxylate groups of the alkylcarboxy esters are pentanoyl groups.Type: ApplicationFiled: February 14, 2013Publication date: August 15, 2013Applicant: CHEMTURA CORPORATIONInventors: Edward T. Hessell, Travis Benanti
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Publication number: 20130207023Abstract: Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a lubricant containing these select neopentyl polyol esters and having a kinematic viscosity at 40° C. of 32 cSt or higher. Specifically, the lubricant composition of the invention comprises a mixture of alkylcarboxy esters of neopentyl polyols, wherein at least 10 wt % of all neopentyl polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups, and wherein a majority of the alkylcarboxylate groups of the alkylcarboxy esters of neopentyl polyols are pentanoyl groups wherein at least 15% of the pentanoyl groups are branched.Type: ApplicationFiled: February 14, 2013Publication date: August 15, 2013Applicant: CHEMTURA CORPORATIONInventors: Travis Benanti, Edward T. Hessell
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Publication number: 20130200294Abstract: Polyol ester lubricant compositions comprising predominately straight chain C5-10 alkylcarboxlate esters of neopentyl alcohols, for example, straight chain C5-10 alkylcarboxlate esters of one or more of trimethylol propane, pentaerythritol, di-pentaerythritol, tri-pentaerythritol or pentaerythritol oligomers, and working fluids comprising said lubricant compositions and a hydrocarbon refrigerant, suitable for heat transfer devices including refrigeration and air conditioning systems are provided. The polyol ester lubricant compositions have a kinematic viscosity at 40° C. of 22-125 cSt and a viscosity index of greater than 140, and are characterized by having very high lubricity, excellent load carrying properties and excellent low temperature properties.Type: ApplicationFiled: February 5, 2013Publication date: August 8, 2013Applicant: CHEMTURA CORPORATIONInventors: Dale D. Carr, Jeffrey A. Hutter, Richard Kelley, Roberto Urrego, Edward T. Hessell
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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