| 发明名称 | Purification of functionalized triblock copolymers via methanol trituration | ||
| 摘要 | A method of making a pure block copolymer includes forming a crude block copolymer; heating a solution of the crude block copolymer and alcohol; and cooling the solution to promote precipitation of a purified block copolymer, wherein an amount of impurities remaining in the purified block copolymer is from about 0 to about 5 wt % based on a total weight of the purified block copolymer; a ratio of a polydispersity index of the crude block copolymer to a polydispersity index of the purified block copolymer is from about 1.02 to about 1.25; a ratio of a molecular weight of the crude block copolymer to a molecular weight of the purified block copolymer is from about 0.75 to about 1.0; and a ratio of a number average molecular weight of the crude block copolymer to a number average molecular weight of the purified block copolymer is from about 0.65 to about 1. | ||
| 申请公布号 | US8952126(B2) | 申请公布日期 | 2015.02.10 |
| 申请号 | US201313938874 | 申请日期 | 2013.07.10 |
| 申请人 | Xerox Corporation;National Research Council of Canada | 发明人 | Myles Andrew J.;Moffat Karen A.;Wosnick Jordan H.;Farrugia Valerie M. |
| 分类号 | C08F6/10;C08F6/28;C08F6/12;C08F6/08;C08G63/88;C08G63/89;C08G63/91 | 主分类号 | C08F6/10 |
| 代理机构 | Pillsbury Winthrop Shaw Pittman LLP | 代理人 | Pillsbury Winthrop Shaw Pittman LLP |
| 主权项 | 1. A method of purifying a block copolymer comprising: heating a solution containing a crude block copolymer and an alcohol; cooling the solution to promote precipitation of a purified block copolymer; and isolating the purified block copolymer, wherein isolating the purified block copolymer comprises filtering the solution to separate the purified block copolymer from a filtrate and recovering unreacted monomer and catalyst from the filtrate, and further wherein: an amount of impurities remaining in the purified block copolymer is from about 0 to about 5 wt % based on a total weight of the purified block copolymer; a ratio of a polydispersity index of the crude block copolymer to a polydispersity index of the purified block copolymer is from about 1.02 to about 1.25; a ratio of a molecular weight of the crude block copolymer to a molecular weight of the purified block copolymer is from about 0.75 to about 1.0; and a ratio of a number average molecular weight of the crude block copolymer to a number average molecular weight of the purified block copolymer is from about 0.65 to about 1. | ||
| 地址 | Norwalk CT US | ||