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公开(公告)号：US20170334824A1
公开(公告)日：2017-11-23
申请号：US15522550
申请日：2015-11-06
Applicant: BASF SE
Inventor： Ralf PELZER , Carolin REGENBRECHT , Chung Huan WONG , Gabriele IFFLAND , Agnes VOITL
Abstract: The present invention relates to a method for extracting aromatic compounds from aqueous, alkaline compositions containing lignin, which have a pH value of at least pH 10, in particular of at least pH 11, especially of at least pH 12, characterized in that the aqueous, alkaline composition containing lignin is treated with active carbon, the active carbon separates from the aqueous, alkaline composition containing lignin and the active carbon then undergoes a desorption step in order to extract the aromatic compounds, wherein the desorption step comprises the treatment of the active carbon (i) by means of an organic solvent, which essentially consists of one or more aromatic hydrocarbons or a mixture of at least one aromatic hydrocarbon together with at least one C1-C4 alkanol, or (ii) by means of water vapor, wherein an eluate is obtained which contains the aromatic compounds.
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公开(公告)号：US20170334820A1
公开(公告)日：2017-11-23
申请号：US15522583
申请日：2015-11-06
Applicant: BASF SE
Inventor： Ralf PELZER , Carolin REGENBRECHT
CPC classification number: C07C41/36 , B01D15/00 , C07C43/23 , C11B9/0061 , C11B9/025
Abstract: The present invention relates to the use of 3,3′-dimethoxy-4,4′-dihydroxystilbene as an odorous substance, in particular for developing a vanilla odor under the action of light. Furthermore, the invention relates to a composition which contain 3,3′-dimethoxy-4,4′-dihydroxystilbene and additionally a carrier, fragrance compositions and/or an odorant material which contain said compound and a process for imparting or modifying an odor of compositions by adding said compound to these compositions. The invention additionally relates to a process for obtaining 3,3′-dimethoxy-4,4′-dihydroxystilbene from lignin-containing compositions.
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