Composition containing C8F17Br and method for producing C8F17Br
AssigneeDaikin Industries, Ltd.
InventorsYoshichika Kuroki, Masahiro Higashi, Yoshihiro Yamamoto
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Abstract
This invention provides a composition that contains PFOB with a PFOA content lower than that of known PFOB, and that is less likely to have an adverse effect on the environment; and provides a method for producing PFOB. The composition contains C8F17Brand further contains C7F15COOH, wherein C7F15COOH is present in a concentration of 25 ppb or less based on the total weight of C8F17Br. The method for producing C8F17Br comprises reacting C8F17I and a brominating agent to obtain C8F17Br, and alkali-washing the obtained C8F17Br to reduce the C7F15COOH content to 25 ppb or less based on the total weight of C8F17Br.
Claims6
A composition containing C8F17Br, and further containing C7F15COOH, wherein C7F15COOH is present in a concentration of 25 ppb or less based on the total weight of C8F17Br.
A method for producing C8F17Br, comprising:
- reacting C8F17I and a brominating agent to obtain C8F17Br;
- and
- alkali-washing the obtained C8F17Br to reduce the C7F15COOH content to 25 ppb or less based on the total weight of C8F17Br.
Dependencies are inferred from the claim text.