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Comparative Study of the Polymerization of Oleic Acid with Its Methyl Ester in an Azeotropic Saltbath

✍ Scribed by Koley, S. N.


Publisher
John Wiley and Sons
Year
1971
Weight
414 KB
Volume
73
Category
Article
ISSN
0931-5985

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✦ Synopsis


Oleic acid and its methyl ester were passed through an azeotropic salt bath consisting of 53 " / o KNO,, 40 O / o NaNO, and 7 0 / 0 NaNO, at a varying rate at 3200 C. Oleic acid was bodied better than its ester. But there is some decarboxylation in the bodied oleic acid. The oleic acid may be polymerized through the interaction of hydroxyl and oxirane as well as of carboxyl and oxirane groups with the formation of ether and ester respectively. The bodied methyl oleate also contains ester, ether and epoxide groups.

Vergleihende

Untersuhung iiber die Polymerisation von UIsäure und Methyloleat in einem azeotropen Calzbad Olsäure und Methyloleat wurden bei 320° C und verschiedenen Durchsatzraten durch ein aus 53"/0 KNO,, 400/0 NaNO, und 7 O / o NaNO, bestehendes azeotropes Salzbad geleitet. Die ÜIsäure lie5 sich leichter eindicken als Methyloleat, jedoch findet bei der Olsäure in gewisscm Umfang eine Decarboxylierung statt. Die Olsäure wird wahrscheinlich durch Reaktionen zwischen der Hydroxyl-und Oxirangruppe sowie zwischen Carboxyl-und Oxirangruppen polymerisiert, wobei Äther bzw. Ester gebildet werden. Audi das polymerisierte Methyloleat enthält Ester-, Äther-und Epoxygruppen. ' CH (CH,), . CH, HO,C. (CH,), / F. 0. Barret et a1.4 heated oleic or monounsaturated fatty acids at about 23OOC in the presence of about


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