- 专利标题： PROCESS FOR PREPARING POLY(ALKYLENE FURANDICARBOXYLATE)
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申请号： US18141613申请日： 2023-05-01
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公开(公告)号： US20230265239A1公开(公告)日： 2023-08-24
- 发明人: Hari Babu SUNKARA , Paul J. Pigliacampi
- 申请人： Covation Inc.
- 申请人地址： US DE Newark
- 专利权人： Covation Inc.
- 当前专利权人： Covation Inc.
- 当前专利权人地址： US DE Newark
- 主分类号： C08G63/672
- IPC分类号： C08G63/672 ; C08G63/181 ; C08G63/85 ; C08K5/18
摘要：
A process to prepare poly(alkylene furandicarboxylate) polymer is disclosed herein. In one embodiment, the process comprises a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, a diol comprising ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, or mixtures thereof, and a metal catalyst at a temperature in the range of from about 140° C. to about 220° C. to form prepolymer,
wherein the mole ratio of the furandicarboxylic acid dialkyl ester to the diol is in the range of from 1:1.3 to 1:2.2;
b) performing polycondensation by heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C. to form poly(alkylene furandicarboxylate) polymer;
wherein the rate of polycondensation in step c) is faster with the anthraquinone compound present than without; and
c) adding at least one anthraquinone compound as disclosed herein; and
wherein the mole ratio of the furandicarboxylic acid dialkyl ester to the diol is in the range of from 1:1.3 to 1:2.2;
b) performing polycondensation by heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C. to form poly(alkylene furandicarboxylate) polymer;
wherein the rate of polycondensation in step c) is faster with the anthraquinone compound present than without; and
c) adding at least one anthraquinone compound as disclosed herein; and
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