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. 14, 1978
Filed:
May. 05, 1976
Karlheinz Koch, Haan, DT;
Gerhard Kolaczinski, Dusseldorf-Oberkassel, DT;
Wolfgang Rupilius, Dusseldorf, DT;
Werner Stein, Erkrath-Unterbach, DT;
Henkel KGaA, Dusselfdorf, DT;
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler, Frankfurt, DT;
Abstract
Corrodible iron-containing metals (including steel) possess decreased tendency to corrode when contacted with aqueous media (including dilute strong mineral acids) when they carry a surface coating of mixtures of aminoalkanols of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent a C.sub.1-21 alkyl; and wherein the sum of the carbon atoms in R.sub.1 and R.sub.2 is 6 to 22. The vicinal ##STR2## substituents are non-terminal and are preferably uniformly distributed along the chain. The aminoalkanols are useful both in free base and in salt form.