发明名称 |
USE OF AN ACETIC ACID/WATER SOLVENT MIXTURE FOR THE PREPARATION OF LOW-SULFATE 5-SULFOISOPHTHALIC ACID, MONO-LITHIUM SALT FROM 5-SULFOISOPHTHALIC ACID |
摘要 |
There is disclosed a process for making a mono-lithium salt of 5-sulfoisophthalic acid (LiSIPA) having less than 200 ppm sulfate. The process uses a reaction mixture of acetic acid, water, a lithium cation producing compound, and 5-sulfoisophthalic acid. The reaction mixture is heated to reflux, cooled, filtered and washed to obtain a high quality LiSIPA having less than 200 ppm sulfate. Also disclosed is a high quality mono-lithium salt of 5-sulfoisophthalic acid having less than 200 ppm sulfate. |
申请公布号 |
WO2011049940(A3) |
申请公布日期 |
2011.09.15 |
申请号 |
WO2010US53186 |
申请日期 |
2010.10.19 |
申请人 |
FUTUREFUEL CHEMICAL COMPANY;OSTER, TIMOTHY, A.;COLEMAN, MICHAEL, TODD |
发明人 |
OSTER, TIMOTHY, A.;COLEMAN, MICHAEL, TODD |
分类号 |
C07C303/22;C07C303/44;C07C309/58 |
主分类号 |
C07C303/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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