Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-03-15
1976-04-27
Patten, James A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2603435, 2603436, 260419, 260484R, 260535R, C07D30712
Patent
active
039534723
ABSTRACT:
Lactones are separated from a mixture of (a) at least one member selected from the group consisting of hydroxy acids wherein the OH group and the COOH group are bonded through 3 or 4 carbon atoms, lactones derived therefrom, lower polymers of said hydroxy acids and/or said lactones and esters of said hydroxy acids and/or said lactones and (b) at least one member selected from the group consisting of hydroxy acids wherein the OH group and the COOH group are bonded through 5 carbon atoms, lactones derived therefrom, lower polymers of said hydroxy acids and/or said lactones and esters of said hydroxy acids and/or said lactones, by heating said mixture in the presence of one or more monovalent or bivalent aliphatic or alicyclic alcohols under the conditions so as to remove the lactones from said (a) by distillation.
REFERENCES:
patent: 2234551 (1941-03-01), Collaud
patent: 2936310 (1960-05-01), Beets et al.
patent: 3277168 (1966-10-01), Koenig
patent: 3624258 (1971-11-01), Ishimoto et al.
patent: 3825570 (1974-07-01), Fujita et al.
Fujita Yutaka
Sada Masao
Sasano Tadahisa
Sawaki Toru
Patten James A.
Sumitomo Chemical Company Limited
Teijin Limited
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