Woolgrease

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C - Chemistry, Metallurgy

07

C

C07C 53/126 (2006.01) A61K 8/92 (2006.01) C07C 27/02 (2006.01) C07C 51/09 (2006.01) C07C 51/44 (2006.01) C07C 51/487 (2006.01) C07C 59/01 (2006.01) C11B 11/00 (2006.01) C11C 1/00 (2006.01) C11C 1/10 (2006.01)

Patent

CA 2277620

A process for recovering 18-methyl eicosanoic acid (18-MEA) and/or alpha hydroxy acids (AHAs) from woolwax acids or derivatives thereof comprises the steps of heating the woolwax acids or derivatives thereof to 100 to 230 °C to form estolides and polymeric species; distilling to obtain a distillate (D1) and a residue (R1); and recovering 18-MEA from the distillate and/or recovering AHAs from the residue.

L'invention concerne un procédé de récupration d'acide eicosanoique 18-méthyl (18-MEA) et/ou des alphahydroxyacides (AHA) à partir des acides de cire de laine ou de leurs dérivés. Le procédé comporte les étapes suivantes : le réchauffement des acides de cire de laine et de leurs dérivés entre 100 et 230 degrés celcius pour former des estolides et des espèces polymériques; une distillation pour obtenir un distillat (D1) et un résidu (R1); et la récupération du 18-MEA du distillat et/ou la récupération des AHA du résidu.

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