Patents Assigned to Saudi Aramco Technologies Company
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Patent number: 10351654Abstract: The present invention encompasses polyurethane compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane foams, thermoplastics and elastomers derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure: In another aspect, the invention provides articles comprising the inventive foam and elastomer compositions as well as methods of making such compositions.Type: GrantFiled: December 6, 2017Date of Patent: July 16, 2019Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Wayne R. Willkomm
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Patent number: 10308761Abstract: The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.Type: GrantFiled: December 2, 2016Date of Patent: June 4, 2019Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Christopher A. Simoneau, William D. Keefe, Jeff R. Conuel
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Patent number: 10308759Abstract: The present invention encompasses CO2-based polycarbonate polyols that do not degrade from the chain ends to form cyclic carbonate. Importantly, the inventive polyol compositions retain —OH end group functionality desirable for thermoset applications.Type: GrantFiled: April 3, 2015Date of Patent: June 4, 2019Assignee: Saudi Aramco Technologies CompanyInventor: Christopher A. Simoneau
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Patent number: 10301426Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.Type: GrantFiled: September 29, 2017Date of Patent: May 28, 2019Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Geoffrey W. Coates, Anna E. Cherian, Chris A. Simoneau, Alexei A. Gridnev, Jay J Farmer
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Patent number: 10138369Abstract: The present invention encompasses polymer compositions comprising aliphatic polycarbonate chains containing functional groups that increase the polymer's ability to wet or adhere to inorganic materials. In certain embodiments, chain ends of the aliphatic polycarbonates are modified to introduce silicon-containing functional groups, boron-containing functional groups, phosphorous-containing functional groups, sulfonic acid groups or carboxylic acid groups.Type: GrantFiled: May 9, 2012Date of Patent: November 27, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Christopher A. Simoneau, Jay J. Farmer
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Patent number: 10047188Abstract: Disclosed are high strength polyurethane foam compositions and methods of making them. In one aspect, the inventive polyurethane foams include strength enhancing additives comprising one or more polycarbonate polyols derived from the copolymerization of CO2 and one or more epoxides. In one aspect, the inventive methods include the step of substituting a portion of the polyether polyol in the B-side of a foam formulation with one or more polycarbonate polyols derived from the copolymerization of CO2 and one or more epoxides.Type: GrantFiled: December 2, 2016Date of Patent: August 14, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Vahid Sendijarevic, Aisa Sendijarevic
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Patent number: 10040800Abstract: Among other things, the present invention encompasses methods of synthesizing salicylaldehyde derivatives comprising the steps of: a) providing salicylaldehyde or a derivative thereof, b) forming an anhydro dimer of the provided salicylaldehyde compound, c) performing one or more chemical transformations on the anhydro dimer and d) hydrolyzing the anhydro dimer to provide a salicylaldehyde derivative different from that provided in step (a).Type: GrantFiled: May 16, 2016Date of Patent: August 7, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Jay J. Farmer, Gabriel E. Job
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Patent number: 9994760Abstract: The disclosure pertains to amphiphilic block copolymers comprising an aliphatic polycarbonate chain coupled to a hydrophilic polymer. Such amphiphilic polymers may have the formula A-L-B, where A- is a polycarbonate or polyethercarbonate chain having from about 3 to about 500 repeating units, L is a linker moiety and —B is a hydrophilic oligomer having from about 4 to about 200 repeating units. Provided copolymers are useful as surfactants capable of emulsifying aqueous solutions and supercritical carbon dioxide. Provided copolymers also have utility as additives for use in enhanced oil recovery methods.Type: GrantFiled: August 22, 2016Date of Patent: June 12, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Chris A. Simoneau, John M. Salladay, David M. Hatfield, John W. Stevens
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Patent number: 9951096Abstract: The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.Type: GrantFiled: August 30, 2016Date of Patent: April 24, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Anna E. Cherian, Chris A. Simoneau, Jay J. Farmer, Geoffrey W. Coates, Alexei Gridnev, Robert E. LaPointe
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Patent number: 9884937Abstract: The present invention encompasses polyurethane compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane foams, thermoplastics and elastomers derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure: In another aspect, the invention provides articles comprising the inventive foam and elastomer compositions as well as methods of making such compositions.Type: GrantFiled: July 11, 2016Date of Patent: February 6, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Wayne R. Willkomm
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Patent number: 9868816Abstract: The present disclosure is directed to, in part, an aliphatic polycarbonate polymerization reaction initiated by combining an epoxide with carbon dioxide in the presence of a catalytic transition metal-ligand complex to form a reaction mixture, and further quenching that polymerization reaction by contacting the reaction mixture with an acid containing a non-nucleophilic anion produces a crude polymer solution with improved stability and processability.Type: GrantFiled: March 10, 2015Date of Patent: January 16, 2018Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Jeffrey R. Conuel, David E. Decker, Anna E. Cherian
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Patent number: 9856349Abstract: The present invention provides bimetallic complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to one or more active metal centers of the complex.Type: GrantFiled: January 25, 2016Date of Patent: January 2, 2018Assignee: Saudi Aramco Technologies CompanyInventor: Jay J. Farmer
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Patent number: 9850345Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having one or more sites capable of initiating copolymerization of epoxides and CO2, wherein the chain transfer agent contains one or more masked hydroxyl groups. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups, a high percentage of carbonate linkages, and substantially all polycarbonate chains having hydroxyl end groups have no embedded chain transfer agent.Type: GrantFiled: June 24, 2016Date of Patent: December 26, 2017Assignee: Saudi Aramco Technologies CompanyInventor: Jay J. Farmer
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Patent number: 9834710Abstract: The present invention encompasses polyurethane adhesive compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane adhesives derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure:. In another aspect, the invention provides articles comprising the inventive polyurethane compositions as well as methods of making such compositions.Type: GrantFiled: April 16, 2013Date of Patent: December 5, 2017Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Vahid Sendijarevic, James O'Connor
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Patent number: 9809678Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.Type: GrantFiled: May 23, 2016Date of Patent: November 7, 2017Assignee: Saudi Aramco Technologies CompanyInventors: Scott D. Allen, Geoffrey W. Coates, Anna E. Cherian, Chris A. Simoneau, Alexei A. Gridnev, Jay J. Farmer
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Patent number: 9771388Abstract: The present invention provides novel metal complexes, methods of making, and methods of using the same.Type: GrantFiled: August 22, 2013Date of Patent: September 26, 2017Assignee: Saudi Aramco Technologies CompanyInventors: Gabriel Job, Scott D. Allen, Christopher Simoneau, Ronald Valente, Jay J. Farmer
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Patent number: 9738647Abstract: The present invention provides methods for the synthesis of polycyclic guanidine compounds. In certain embodiments, provided methods include the step of contacting a described reagent with a triamine compound to provide a polycyclic guanidine compound.Type: GrantFiled: January 6, 2014Date of Patent: August 22, 2017Assignee: Saudi Aramco Technologies CompanyInventor: Alexei Gridnev