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:
Jan. 09, 2007
Filed:
Jun. 27, 2002
Uwe Dahlmann, Heidelberg, DE;
Michael Feustel, Koengernheim, DE;
Uwe Dahlmann, Heidelberg, DE;
Michael Feustel, Koengernheim, DE;
Clariant GmbH, Frankfurt, DE;
Abstract
The invention relates to an additive and to a method of corrosion inhibition on devices for the recovery and transportation of hydrocarbons in crude oil recovery and processing by adding an effective amount of an inhibitor. The inhibitor comprises an alkoxylated quaternary compounds of the formula 1 where R, Rare independently groups of the formula —(B)—(O—A)—O—CO—Ror —(A—O)—(C)—CO—O—R, Ris C— to C-alkyl or C— to C-alkenyl, Ris an organic radical with 1 to 100 carbon atoms optionally containing heteroatoms, Ris an alkyl or an alkenyl, n is a number from 1 to 20, A is an alkylene group, B is an alkylene group, C is a C— to C-alkylene group and X is an anion, used as corrosion inhibitors.