发明名称 |
POLYCARBONATE POLYOL COMPOSITIONS AND METHODS |
摘要 |
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. |
申请公布号 |
US2016264728(A1) |
申请公布日期 |
2016.09.15 |
申请号 |
US201615161684 |
申请日期 |
2016.05.23 |
申请人 |
Novomer, Inc. |
发明人 |
Allen Scott D.;Coates Geoffrey W.;Cherian Anna E.;Simoneau Chris A.;Gridnev Alexei A.;Farmer Jay J. |
分类号 |
C08G64/34;C08G18/44 |
主分类号 |
C08G64/34 |
代理机构 |
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代理人 |
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主权项 |
1. A polymerization system for the copolymerization of CO2 and epoxides, the system comprising:
a metal complex including a permanent ligand set and at least one ligand that is a polymerization initiator, and a chain transfer agent having a plurality of sites capable of initiating copolymerization of epoxides and CO2. |
地址 |
Ithaca NY US |