MEROCYANINE CRYSTALLIZATION PROCESS

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United States of America Patent

APP PUB NO 20210323912A1
SERIAL NO

17259538

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Abstract

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The present invention relates to a process for preparing a crystalline merocyanine compound, comprising the step of dissolving a merocyanine compound in an organic, polar solvent, wherein the process is performed at a pH below than 7 in the presence of an acid, wherein residual levels of colored impurities are eliminated.

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Patent Owner(s)

Patent OwnerAddress
BASF SEGERMANY'S RHINE RIVER IN LUDWIGSHAFEN LUDWIGSHAFEN RHINELAND-PALATINATE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Simon, Levente 4333 Münchwilen, CH 2 0
Winkler, Barbara Schweizerhalle (Muttenz), CH 13 21

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