发明名称 | Method for producing formaldehyde/CO<sub>2 </sub>copolymers | ||
摘要 | The invention relates to a method for producing non-alternating formaldehyde/CO2 copolymers, said method comprising the step of reacting formaldehyde or a compound that releases formaldehyde with carbon dioxide in the presence of a catalyst system. Said method is characterized in that the catalyst system comprises a Lewis acid component and a basic component, the Lewis acid component being at least temporarily coordinatively unsaturated under reaction conditions and the basic component having a pKb value of >=0. | ||
申请公布号 | US9469715(B2) | 申请公布日期 | 2016.10.18 |
申请号 | US201314654665 | 申请日期 | 2013.12.17 |
申请人 | Covestro Deutschland AG | 发明人 | Müller Thomas Ernst;Gürtler Christoph;Vogt Henning;Krautschick Mario;Leitner Walter |
分类号 | C08G10/02;C08G16/02;C08G2/06;C08G2/08;C08G64/02;C08G64/32;C08L59/04;C08G12/02 | 主分类号 | C08G10/02 |
代理机构 | K&L Gates LLP | 代理人 | K&L Gates LLP |
主权项 | 1. A process for preparing nonalternating formaldehyde/CO2 copolymers, the process comprising the step of reacting formaldehyde or a formaldehyde-releasing compound with carbon dioxide in the presence of a catalyst system, wherein the catalyst system comprises a Lewis-acidic metal component selected from the group consisting of boron, tin, zinc, copper, bismuth, molybdenum, tungsten, vanadium, and combinations thereof, and a basic component with a pKb of ≧0, wherein the catalyst system takes the form of a frustrated Lewis pair, and the Lewis-acidic component under reaction conditions is at least intermittently coordinatively unsaturated. | ||
地址 | Leverkusen DE |