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:
Aug. 23, 1977
Filed:
Jul. 09, 1975
Friedrich Krueger, Edingen, DT;
Dieter Palleduhn, Mannheim, DT;
Joh. A. Benckiser GmbH, Ludwigshafen (Rhine), DT;
Abstract
Novel 1,4-bis-formyl cyclohexane polycarboxylic acids have proved of considerable value as agents capable of preventing and inhibiting scale formation in aqueous media. Especially valuable scale formation inhibiting and complexing agents are 1,4-bis-formyl cyclohexane-1,2,3,6-tetracarboxylic acid and 1,4-bis-formyl cyclohexane-1,2,3-tricarboxylic acid. They are prepared by oxidizing the corresponding bicyclo-(2,2,2)-octene(7) polycarboxylic acid-2,3-anhydrides. The novel nitrogen- and phosphorus-free acids have a surprisingly high threshold effectiveness and can be used in detergent and cleaning solutions in combination with conventional detergents and cleaning agents.