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公开(公告)号：US20240123438A1
公开(公告)日：2024-04-18
申请号：US18371808
申请日：2023-09-22
申请人： Covestro LLC
发明人： Daniel R. Wagner , Brian L. Neal
IPC分类号： B01J47/026 , B01D3/10 , B01J39/12 , B01J41/10 , C08G18/48
CPC分类号： B01J47/026 , B01D3/10 , B01J39/12 , B01J41/10 , C08G18/48
摘要： Processes for purifying polyether polyols via treatment with ion exchange resins. A mixture that includes the polyether polyol and alkali metal ions is passed through a first bed that includes a cation exchange resin comprising carboxylic acid and/or phosphonic acid groups to remove alkali metal ions from the mixture. Thereafter, the product is passed through a second bed comprising an anion exchange resin comprising quaternary ammonium groups and a cation exchange resin comprising carboxylic acid and/or phosphonic acid groups to thereby produce a purified polyether polyol.
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2.发明申请公开(公告)号：US20220288652A1
公开(公告)日：2022-09-15
申请号：US17196075
申请日：2021-03-09
申请人： Covestro LLC
发明人： Jenna L. Caputo , Mark A. Christman, II , Charles D. Starkey , Daniel R. Wagner , Nigel Barksby
摘要： Methods of removing amine contaminants from equipment used in the production of polyether polyols. These methods include: (a) contacting the equipment with an aqueous solution of a first acid; (b) discharging the aqueous solution of the first acid from the equipment; (c) contacting the equipment with an aqueous solution of an acidic metal conditioner; (d) discharging the aqueous solution of the acidic metal conditioner from the equipment; (e) contacting the equipment with an aqueous solution of an alkali metal hydroxide; and (f) discharging the aqueous solution of the alkali metal hydroxide from the equipment.
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3.发明申请公开(公告)号：US20210253791A1
公开(公告)日：2021-08-19
申请号：US16793339
申请日：2020-02-18
申请人： Covestro LLC
发明人： Daniel R. Wagner , Brian L. Neal
摘要： Disclosed are methods for purifying polyols containing oxyalkylene units that is an alkali metal catalyzed alkoxylation reaction product of an alkylene oxide and an H-functional starter. The methods include neutralizing the alkali metal ions with an aqueous solution comprising water and sulfuric acid, in which: (i) the sulfuric acid is present in an amount of no more than 5% by weight, based on the total weight of the aqueous solution, and (ii) the sulfuric acid is used in an amount of 2% to 10% more than the theoretical amount necessary to neutralize all of the alkali metal ions present. The methods can produce polyols having a low content of 2-methyl-2-pentenal.
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公开(公告)号：US10633406B1
公开(公告)日：2020-04-28
申请号：US16191510
申请日：2018-11-15
申请人： COVESTRO LLC
IPC分类号： C07H15/08
摘要： Batch “water processes” for producing high functionality polyether polyols from polyhydroxyl compounds that are solid at ambient conditions, such as is the case with sucrose, are disclosed. The disclosed processes avoid use of an intermediate dewatering step.
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5.发明授权公开(公告)号：US11529657B2
公开(公告)日：2022-12-20
申请号：US17196075
申请日：2021-03-09
申请人： Covestro LLC
发明人： Jenna L. Caputo , Mark A. Christman, II , Charles D. Starkey , Daniel R. Wagner , Nigel Barksby
摘要： Methods of removing amine contaminants from equipment used in the production of polyether polyols. These methods include: (a) contacting the equipment with an aqueous solution of a first acid; (b) discharging the aqueous solution of the first acid from the equipment; (c) contacting the equipment with an aqueous solution of an acidic metal conditioner; (d) discharging the aqueous solution of the acidic metal conditioner from the equipment; (e) contacting the equipment with an aqueous solution of an alkali metal hydroxide; and (f) discharging the aqueous solution of the alkali metal hydroxide from the equipment.
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公开(公告)号：US20170369647A1
公开(公告)日：2017-12-28
申请号：US15190841
申请日：2016-06-23
申请人： Covestro LLC
摘要： Disclosed are processes and systems for removing water from a polyether polyol that employs a controlled temperature and pressure profile.
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公开(公告)号：US20230147479A1
公开(公告)日：2023-05-11
申请号：US18045886
申请日：2022-10-12
申请人： Covestro LLC
发明人： Jack R. Reese , Daniel R. Wagner , Brian L. Neal
IPC分类号： C08G65/26
CPC分类号： C08G65/2663 , C08G65/2696
摘要： Processes and production plants for preparing a polyol. The process includes continuously producing an intermediate polyol in a first reactor, b) continuously discharging the intermediate polyol from the first reactor, continuously mixing the intermediate polyol with an aqueous solutions of alkali metal to provide a mixture comprising the intermediate polyol, alkali metal, and water, continuously dehydrating the mixture comprising intermediate polyol, alkali metal, and water, thereby continuously producing a dehydrated mixture comprising the intermediate polyol and the alkali metal, transferring the dehydrated mixture to a second reactor, and producing the polyether polyol in the second reactor by feeding an alkylene oxide to the second reactor to thereby react the intermediate polyol with the alkylene oxide in the presence of the alkali metal.
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8.发明授权公开(公告)号：US11572440B2
公开(公告)日：2023-02-07
申请号：US16793339
申请日：2020-02-18
申请人： Covestro LLC
发明人： Daniel R. Wagner , Brian L. Neal
摘要： Disclosed are methods for purifying polyols containing oxyalkylene units that is an alkali metal catalyzed alkoxylation reaction product of an alkylene oxide and an H-functional starter. The methods include neutralizing the alkali metal ions with an aqueous solution comprising water and sulfuric acid, in which: (i) the sulfuric acid is present in an amount of no more than 5% by weight, based on the total weight of the aqueous solution, and (ii) the sulfuric acid is used in an amount of 2% to 10% more than the theoretical amount necessary to neutralize all of the alkali metal ions present. The methods can produce polyols having a low content of 2-methyl-2-pentenal.
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公开(公告)号：US20200157133A1
公开(公告)日：2020-05-21
申请号：US16191510
申请日：2018-11-15
申请人： COVESTRO LLC
IPC分类号： C07H15/08
摘要： Batch “water processes” for producing high functionality polyether polyols from polyhydroxyl compounds that are solid at ambient conditions, such as is the case with sucrose, are disclosed. The disclosed processes avoid use of an intermediate dewatering step.
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公开(公告)号：US10150837B2
公开(公告)日：2018-12-11
申请号：US15190841
申请日：2016-06-23
申请人： Covestro LLC
摘要： Disclosed are processes and systems for removing water from a polyether polyol that employs a controlled temperature and pressure profile.
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