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公开(公告)号：US20200062898A1
公开(公告)日：2020-02-27
申请号：US16488874
申请日：2018-03-01
发明人： Michael Kember , Rakibul Kabir , Anthea Blackburn
摘要： The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound. The catalyst of formula (I) is as follows.
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公开(公告)号：US20220227926A1
公开(公告)日：2022-07-21
申请号：US17608251
申请日：2020-05-01
发明人： James Leeland , Rakibul Kabir , Kerry Riley , Michael Kember
摘要： A process for producing a polyol block copolymer in a multiple reactor system including a first and second reactor in which a first reaction takes place in the first reactor and a second reaction takes place in the second reactor. The first reaction is the reaction of a carbonate catalyst with CO2 and epoxide, in the presence of starter and/or solvent to produce polycarbonate polyol copolymer and the second reaction is the reaction of DMC catalyst with the polycarbonate polyol compound of the first reaction and epoxide to produce polyol block copolymer. The product of the first reaction is fed into the second as crude reaction mixture, the epoxide and the polycarbonate polyol compound of the first reaction are fed in a continuous or semi-batch manner, and/or the product of the first reaction has neutral or alkaline pH on addition to the second. The invention further relates to the copolymers and products incorporating such copolymers.
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公开(公告)号：US20220227925A1
公开(公告)日：2022-07-21
申请号：US17608249
申请日：2020-05-01
发明人： James Leeland , Rakibul Kabir , Kerry Riley , Michael Kember
摘要： A polyol block copolymer comprising a polycarbonate block, A (-A′-Z′—Z—(Z′-A′)n-), and polyethercarbonate blocks, B. The polyol block copolymer has the polyblock structure: B-A′-Z′—Z—(Z′-A′-B)n wherein n=t−1 and wherein t=the number of terminal OH group residues on the block A; and wherein each A′ is independently a polycarbonate chain having at least 70% carbonate linkages, and wherein each B is independently a polyethercarbonate chain having 50-99% ether linkages and at least 1% carbonate linkages; and wherein Z′—Z—(Z′)n is a starter residue. A process of producing a polyol block copolymer from a two step process carried out in two reactors, and products and compositions incorporating such copolymers.
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公开(公告)号：US20200369829A1
公开(公告)日：2020-11-26
申请号：US16987153
申请日：2020-08-06
摘要： The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound. The catalyst of formula (I) is as follows:
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公开(公告)号：US20220185956A1
公开(公告)日：2022-06-16
申请号：US16758179
申请日：2018-10-24
发明人： Michael Kember , David Muir , Anthony Chartoire , James Leeland , Fernando Valera , Andrew Carruthers , Rakibul Kabir
摘要： A method for quenching a polymerisation process is described. The reaction of carbon dioxide with an epoxide in the presence of a bimetallic metal complex catalyst to produce a polymer comprises the quenching step of deactivation of the catalyst by contacting the catalyst with an acid effective to deactivate the catalyst. The deactivated catalyst may be removed from the polymer product by contacting the catalyst and polymer product with a solid phase and/or by precipitation; and the catalyst may also be optionally reactivated by contacting the deactivated catalyst with an anion. The acid may contain an anion effective to initiate the polymerisation process and effective to deactivate the catalyst and the molar ratio of acid to catalyst in the deactivation step may be less than or equal to 20:1 of the acid to catalyst mole ratio for the reaction.
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公开(公告)号：US20200339732A1
公开(公告)日：2020-10-29
申请号：US16956313
申请日：2018-12-21
发明人： Michael Kember , Rakibul Kabir , Mark Andrews
摘要： A rigid foam including the reaction product of an (poly)isocyanate, and a polyethercarbonate polyol copolymer is described. The polyethercarbonate polyol copolymer is derived from the copolymerisation of one or more epoxides with CO2, wherein the total-CO2— content of the polyethercarbonate polyol copolymer is between 1 and 40 wt %, the carbonate linkages are
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公开(公告)号：US11613606B2
公开(公告)日：2023-03-28
申请号：US16758179
申请日：2018-10-24
发明人： Michael Kember , David Muir , Anthony Chartoire , James Leeland , Fernando Valera , Andrew Carruthers , Rakibul Kabir
摘要： A method for quenching a polymerisation process is described. The reaction of carbon dioxide with an epoxide in the presence of a bimetallic metal complex catalyst to produce a polymer comprises the quenching step of deactivation of the catalyst by contacting the catalyst with an acid effective to deactivate the catalyst. The deactivated catalyst may be removed from the polymer product by contacting the catalyst and polymer product with a solid phase and/or by precipitation; and the catalyst may also be optionally reactivated by contacting the deactivated catalyst with an anion. The acid may contain an anion effective to initiate the polymerisation process and effective to deactivate the catalyst and the molar ratio of acid to catalyst in the deactivation step may be less than or equal to 20:1 of the acid to catalyst mole ratio for the reaction.
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公开(公告)号：US10774179B2
公开(公告)日：2020-09-15
申请号：US15809801
申请日：2017-11-10
摘要： The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound. The catalyst of formula (I) is as follows:
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公开(公告)号：US20180148539A1
公开(公告)日：2018-05-31
申请号：US15809801
申请日：2017-11-10
摘要： The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound. The catalyst of formula (I) is as follows:
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