发明授权
- 专利标题： Process for making perfluoroalkylacetic acid
- 专利标题（中）： 制备全氟甘油酸的方法
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申请号： US3632641D申请日： 1968-01-19
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公开(公告)号： US3632641A公开(公告)日： 1972-01-04
- 发明人: FIELDING HAROLD CROSBIE
- 申请人： ICI LTD
- 专利权人： Imperial Chemical Industries Ltd
- 当前专利权人： Imperial Chemical Industries Ltd
- 优先权： GB336167 1967-01-23
- 主分类号： C07C45/00
- IPC分类号： C07C45/00 ; C07C45/87 ; C07C49/167 ; C07C49/88 ; C07C51/00 ; C07C49/06 ; C07C29/00 ; C07C53/18
摘要：
OLIGOMERS OF TETRAFLUOROETHYLENE (C2F4)N WHERE N IS 4 TO 6 REACT AT 25*-100*C. WITH AQUEOUS SOLUTIONS OF SODIUM OR POTASSIUM HYDROXIDES TO GIVE NOVEL OXYGEN-CONTAINING DERIVATIVES IN WHICH THE OXYGEN IS LOCATED IN HYDROXYL, CARBONYL OR CARBONYL GROUPS. WITH 5-15% BY WEIGHT SOLUTIONS OF THE HYDROXIDES THE TETRAMER YIELDS A TERTIARY ALCOHOL; THE PENTAMER YIELDS THE KETONE
(C2F6)2CF3)C.CH2COCF3
AND HEXAMER YIELDS A MIXTURE OF THE KETONE
(C4F9)C2F5)(CF3)C.CH2COCF3
AND THE KETONE (C2F5)2(CF3)C.C(CO).CF(CF3)(C2F5); WITH 30-60% SOLUTIONS THE PENTAMER YIELDS THE ACID (C2F5)2(CF3)C.CH2COOH. THESE OLIGOME DERIVATIVES ARE INTERMEDIATES FOR MAKING SURFACTANTS AND OLEOPHOBIC COMPOUNDS FOR APPLICATION TO TEXTILES AND LEATHER.
(C2F6)2CF3)C.CH2COCF3
AND HEXAMER YIELDS A MIXTURE OF THE KETONE
(C4F9)C2F5)(CF3)C.CH2COCF3
AND THE KETONE (C2F5)2(CF3)C.C(CO).CF(CF3)(C2F5); WITH 30-60% SOLUTIONS THE PENTAMER YIELDS THE ACID (C2F5)2(CF3)C.CH2COOH. THESE OLIGOME DERIVATIVES ARE INTERMEDIATES FOR MAKING SURFACTANTS AND OLEOPHOBIC COMPOUNDS FOR APPLICATION TO TEXTILES AND LEATHER.
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