The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 1999
Filed:
Nov. 26, 1997
Applicant:
Inventors:
Karl Heinz Giselbrecht, Pasching, AT;
Eduard Perndorfer, Traun, AT;
Assignee:
DSM Chemie Linz GmbH, , AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N / ; C07C / ;
U.S. Cl.
CPC ...
514699 ; 568426 ; 568438 ;
Abstract
A process for preparing an aqueous o-phthalaldehyde-glutaraldehyde solution which comprises converting an acetal of the o-phthalaldehyde in a 10 to 60% strength aqueous glutaraldehyde solution into o-phthalaldehyde at room temperature up to 100.degree. C. by eliminating the corresponding alcohol, and removing the eliminated alcohol to give the aqueous o-phthalaldehyde-glutaraldehyde solution.