-
1.发明申请公开(公告)号：US20230014630A1
公开(公告)日：2023-01-19
申请号：US17757389
申请日：2020-12-16
发明人： Robert Lin , Robert Jacks Sharpe
IPC分类号： C07D319/06 , C07C67/02
摘要： Disclosed is a method for depolymerization of polyester. The method includes (a) treating said polyester with methanol under conditions sufficient to depolymerize at least some of said polyester and form a reaction product that includes dimethyl terephthalate and at least one diol; and (b) converting the diol to a compound substantially non-reactive with said with dimethyl terephthalate and the polyester. A method for producing a cyclic carbonate is also described.
-
公开(公告)号：US11136414B2
公开(公告)日：2021-10-05
申请号：US16492964
申请日：2018-03-28
摘要： The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
-
公开(公告)号：US20200017606A1
公开(公告)日：2020-01-16
申请号：US16492965
申请日：2018-03-28
IPC分类号： C08B3/16
摘要： The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
-
公开(公告)号：US20200017605A1
公开(公告)日：2020-01-16
申请号：US16492964
申请日：2018-03-28
摘要： The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
-
5.发明申请公开(公告)号：US20190330380A1
公开(公告)日：2019-10-31
申请号：US16465256
申请日：2016-12-08
发明人： Robert Lin , Glenn Lewis Shoaf , Venkateswarlu Bhamidi , Shane Kipley Kirk , Marty L. Neal , Steven J. Adams
摘要： Processes and systems for separating a mixture including at least one fluorocarboxylic acid and at least one carboxylic acid are provided herein. In some aspects, the present invention relates to processes and systems configured to provide a purified stream of fluorocarboxylic acid and a purified stream of carboxylic acid, even when the mixture includes an azeotrope, a pinch point, and/or a eutectic mixture of the fluorocarboxylic acid and carboxylic acid. Systems as described herein may include, for example, at least one distillation zone and at least one fractional crystallization zone arranged in series and configured to provide highly purified product streams having compositions heretofore unachievable by conventional means.
-
公开(公告)号：US10377690B1
公开(公告)日：2019-08-13
申请号：US16109115
申请日：2018-08-22
发明人： Scott Allen Owens , Robert Lin , Jody Lee Rodgers
摘要： Disclosed is a method for forming enals from corresponding alehydes in a single enclosed unit such as a divided wall reaction distillation unit. The method of the present invention includes (a) feeding an aldehyde feed stream comprising at least one aldehyde reactant into a reaction zone contained within said single enclosed unit; (b) reacting said at least one aldehyde reactant in said reaction zone in the presence of a catalyst to form an enal-containing reaction zone effluent comprising an enal; (c) purifying said enal-containing reaction zone effluent in a first separation zone within said single enclosed unit to form an enal-rich product mixture and a residual unreacted aldehyde mixture; and (d) collecting from said single enclosed unit at least a portion of said enal-rich product mixture. The method of the present invention results in high enal yields at a markedly reduced capital cost and energy consumption as compared to prior art processes.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.024 秒)
