Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Karlheinz Giselbrecht0
Wolfgang Hillisch0
Date of Patent
July 22, 2008
0Patent Application Number
113387270
Date Filed
January 25, 2006
0Patent Primary Examiner
Patent abstract
A method for producing aqueous ortho-phthalaldehyde solutions which comprises introducing an acetal of the o-phthalaldehyde into water and subsequently setting a pH <7 by adding an acid, whereupon, then at a temperature between 10° C. and 90° C., the acetal is converted into the o-phthalaldehyde by eliminating the corresponding alcohol, and also use of OPA acetals for producing these solutions.
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