发明名称 |
Procédé de purification de liqueurs aqueuses brutes contenant de l'acide malique |
摘要 |
Crude aqueous malic acid liquor is purified from saturated organic acid impurities by contacting with a basic anion exchange resin of a basicity to selectively adsorb the acid impurities. The liquor which may be that remaining from the crystallization of fumaric acid from the reaction mixture obtained by treatment of maleic acid may be treated preferably with a polystyrene resin containing aminomethyl substituents. Other resins such as cation-exchange resins and porous activated carbon adsorbent may also be used in further purification stages. |
申请公布号 |
FR1464229(A) |
申请公布日期 |
1966.12.30 |
申请号 |
FR19650041430 |
申请日期 |
1965.12.08 |
申请人 |
ALLIED CHEMICAL CORPORATION |
发明人 |
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分类号 |
C07C59/245;B01J41/04;C07C51/47 |
主分类号 |
C07C59/245 |
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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