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公开(公告)号：US20190256653A1
公开(公告)日：2019-08-22
申请号：US16313513
申请日：2017-06-12
Applicant: Dow Global Technologies LLC
Inventor： Oguz Türünç , An Adams , Carola Meinl , Jean-Paul Masy , Sonet Vermaire , Matthias Schaefer , Sven Claessens
IPC: C08G65/334 , C08G65/26 , C08L71/02
Abstract: Unsaturated polyether monols are removed from polyether polyols by reaction with a functionalized thiol compound or a polythiol compound. This process replaces the terminal unsaturation with a functional group, or else couples two or more of the monols to form a polyol. The functionality of the polyether polyol product is increased by the removal of the monols.
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公开(公告)号：US20170240702A1
公开(公告)日：2017-08-24
申请号：US15504368
申请日：2015-10-19
Applicant: Dow Global Technologies LLC
Inventor： Arjun Raghuraman , Matthias Schaefer , Jean-Paul Masy , David S. Laitar
IPC: C08G65/26
CPC classification number: C08G65/269 , B01J23/75 , B01J27/26 , C08G65/2654 , C08G65/266 , C08G65/2663 , C08G65/2696
Abstract: A method of producing a high primary hydroxyl group content and a high number average molecular weight polyol includes preparing a mixture that includes a double metal cyanide catalyst and a low molecular weight polyether polyol having a number average molecular weight of less than 1,000 g/mol, the polyether polyol is derived from propylene oxide, ethylene oxide, or butylene oxide, setting the mixture to having a first temperature, adding at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the mixture at the first temperature, allowing the mixture to react to form a reacted mixture, adding a Lewis acid catalyst to the reacted mixture, setting the reaction mixture including the second catalyst to have a second temperature that is less than the first temperature, and adding additional at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the reacted mixture at the second temperature such that a resultant polyol having a primary hydroxyl group content of at least 60% and a number average molecular weight greater than 2,500 g/mol is formed.
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Patent Agency Ranking
公开(公告)号：US10920013B2
公开(公告)日：2021-02-16
申请号：US16326880
申请日：2017-09-17
Applicant: Dow Global Technologies LLC
Inventor： Nima N. Nikbin , Carlos M. Villa , Maria Jose Nieves Remacha , Irfan Khan , William H. Heath , John G. Pendergast, Jr. , Matthias Schaefer , Anna Forlin
Abstract: Alkylene oxides are polymerized in a tubular reactor. The alkylene oxide is continuously introduced into the tubular reactor through multiple introduction points located along the length of the tubular reactor. Monomer flow rates are increased along the length of the reactor to maintain a nearly constant concentration of unreacted alkylene oxide.
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公开(公告)号：US20190202983A1
公开(公告)日：2019-07-04
申请号：US16326880
申请日：2017-09-17
Applicant: Dow Global Technologies LLC
Inventor： Nima N. Nikbin , Carlos M. Villa , Maria Jose Nieves Remacha , Irfan Khan , William H. Heath , John G. Pendergast, Jr. , Matthias Schaefer , Anna Forlin
CPC classification number: C08G65/2696 , B01J8/0221 , B01J8/0278 , B01J19/2415 , B01J19/242 , B01J19/243 , B01J19/244 , B01J19/2475 , B01J2208/00088 , B01J2208/00212 , B01J2208/0053 , B01J2219/00094 , B01J2219/00164 , B01J2219/182 , B01J2219/1923 , C08G65/2663
Abstract: Alkylene oxides are polymerized in a tubular reactor. The alkylene oxide is continuously introduced into the tubular reactor through multiple introduction points located along the length of the tubular reactor. Monomer flow rates are increased along the length of the reactor to maintain a nearly constant concentration of unreacted alkylene oxide.
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公开(公告)号：US20170362378A1
公开(公告)日：2017-12-21
申请号：US15533355
申请日：2015-12-05
Applicant: Dow Global Technologies LLC
Inventor： Rafael Benavides , David A. Babb , Matthias Schaefer , Patrick Fontanella , William H. Heath , Wenwen Li
IPC: C08G65/336
CPC classification number: C08G65/336 , C08G18/10 , C08G18/289 , C08G2650/04 , C08G2650/10 , C08G2650/38 , C08G2650/58
Abstract: Vinyl-functional alcohols are silylated by reaction with a hydrolysable silyl hydride compound. The starting alcohol is heated and then combined with the silyl hydride and catalyst and allowed to heat exothermically. Cooling is applied when the conversion of vinyl groups is between 90-99%. In some embodiments, specified amounts of water are present. The cooling regimen and control of water content reduces certain side reactions, leading to greater yields to desired product.
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公开(公告)号：US10184026B2
公开(公告)日：2019-01-22
申请号：US15533355
申请日：2015-12-05
Applicant: Dow Global Technologies LLC
Inventor： Rafael Benavides , David A. Babb , Matthias Schaefer , Patrick Fontanella , William H. Heath , Wenwen Li
IPC: C08G65/336 , C08G18/10 , C08G18/28
Abstract: Vinyl-functional alcohols are silylated by reaction with a hydrolysable silyl hydride compound. The starting alcohol is heated and then combined with the silyl hydride and catalyst and allowed to heat exothermically. Cooling is applied when the conversion of vinyl groups is between 90-99%. In some embodiments, specified amounts of water are present. The cooling regimen and control of water content reduces certain side reactions, leading to greater yields to desired product.
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公开(公告)号：US09896542B2
公开(公告)日：2018-02-20
申请号：US15504368
申请日：2015-10-19
Applicant: Dow Global Technologies LLC
Inventor： Arjun Raghuraman , Matthias Schaefer , Jean-Paul Masy , David S. Laitar
IPC: C08G65/26
CPC classification number: C08G65/269 , B01J23/75 , B01J27/26 , C08G65/2654 , C08G65/266 , C08G65/2663 , C08G65/2696
Abstract: A method of producing a high primary hydroxyl group content and a high number average molecular weight polyol includes preparing a mixture that includes a double metal cyanide catalyst and a low molecular weight polyether polyol having a number average molecular weight of less than 1,000 g/mol, the polyether polyol is derived from propylene oxide, ethylene oxide, or butylene oxide, setting the mixture to having a first temperature, adding at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the mixture at the first temperature, allowing the mixture to react to form a reacted mixture, adding a Lewis acid catalyst to the reacted mixture, setting the reaction mixture including the second catalyst to have a second temperature that is less than the first temperature, and adding additional at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the reacted mixture at the second temperature such that a resultant polyol having a primary hydroxyl group content of at least 60% and a number average molecular weight greater than 2,500 g/mol is formed.
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