Method for deodorizing liquid lanolin
AssigneeKao Soap Co., Ltd.
InventorsHisashi Sekine, Akira Yamamoto, Shizuo Hayashi
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Abstract
Liquid lanolin is deodorized by mixing it with a solvent selected from methanol, ethanol, mixtures of methanol and ethanol, or aqueous solutions of methanol and/or ethanol, and then separating and removing the solvent phase. A subsequent water-washing treatment provides a further improved deodorizing effect.
Claims6
A method for deodorizing liquid lanolin having a cloud point of about 17.degree.-18.degree. C and a solidifying point of about 3.degree.-4.degree. C, which consists essentially of the steps of adding to liquid lanolin containing odor-causing substances and mixing uniformly therein a solvent for said odor-causing substances selected from the group consisting of methanol, ethanol, mixtures of methanol and ethanol, and aqueous solutions thereof containing up to 50% by weight of water, the weight ratio of said solvent to said liquid lanolin being in the range of from 0.5/1.0 to 4.0/1.0, the mixing being carried out at a temperature of from 40.degree. to 80.degree. C and for a period of time effective to dissolve in said solvent the odor-causing substances initially present in the liquid lanolin, then while maintaining the mixture at 40.degree. to 80.degree. C separating and removing the solvent phase containing the odor-causing substances dissolved therein from the liquid lanolin and thereby recovering deodorized liquid lanolin.
Dependencies are inferred from the claim text.