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公开(公告)号：US20220251283A1
公开(公告)日：2022-08-11
申请号：US17433045
申请日：2020-02-14
发明人： Mihir Bhagat , Charmaine Bennett , Youlong Zhu , SonBinh T. Nguyen , Linda Broadbelt , Justin M. Notestein , Matthew E. Belowich , Arjun Raghuraman , William H. Heath , Sukrit Mukhopadhyay , Heather A. Spinney , David R. Wilson
摘要： A method of producing a polyether alcohol that includes feeding an initiator into a reactor, feeding one or more monomers into the reactor, feeding a polymerization catalyst into the reactor, the polymerization catalyst being a Lewis acid catalyst having a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, separate from feeding the initiator into the reactor, feeding a hydrogen bond acceptor additive into the reactor, the hydrogen bond acceptor additive being a C2 to C20 organic molecule having at least two hydroxyl groups, of which two hydroxyl groups are situated in 1,2-, 1,3-, or 1,4- positions on the organic molecule, and allowing the initiator to react with the one or more monomers in the presence of the polymerization catalyst and the hydrogen bond acceptor additive to form a polyether alcohol having a number average molecular weight greater than a number average molecular weight of the initiator.
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公开(公告)号：US11993675B2
公开(公告)日：2024-05-28
申请号：US17433045
申请日：2020-02-14
发明人： Mihir Bhagat , Charmaine Bennett , Youlong Zhu , SonBinh T. Nguyen , Linda Broadbelt , Justin M. Notestein , Matthew E. Belowich , Arjun Raghuraman , William H. Heath , Sukrit Mukhopadhyay , Heather A. Spinney , David R. Wilson
CPC分类号： C08G18/48 , C08G18/10 , C08G65/005 , C08G65/2609 , C08G65/2654 , C08G65/266
摘要： A method of producing a polyether alcohol that includes feeding an initiator into a reactor, feeding one or more monomers into the reactor, feeding a polymerization catalyst into the reactor, the polymerization catalyst being a Lewis acid catalyst having a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, separate from feeding the initiator into the reactor, feeding a hydrogen bond acceptor additive into the reactor, the hydrogen bond acceptor additive being a C2 to C20 organic molecule having at least two hydroxyl groups, of which two hydroxyl groups are situated in 1,2-, 1,3-, or 1,4-positions on the organic molecule, and allowing the initiator to react with the one or more monomers in the presence of the polymerization catalyst and the hydrogen bond acceptor additive to form a polyether alcohol having a number average molecular weight greater than a number average molecular weight of the initiator.
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