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. 11, 2000
Filed:
Oct. 31, 1997
Applicant:
Inventor:
Philippe Prince, Pearland, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C07D / ;
U.S. Cl.
CPC ...
252391 ; 5483245 ; 508272 ; 508284 ;
Abstract
A water soluble corrosion inhibitor containing a compound having at least one five-membered heterocyclic ring having at least one thione group and at least one other pendant group is described. Such a corrosion inhibiting compound can be made by reacting together a thiourea and a polyalkylene polyamine. A specific example includes preparing 1-(2-aminoethyl)-2-imidazolidinethione by reacting thiourea, per se, and diethylenetriamine. These corrosion inhibition compounds have greatly reduced aquatic toxicity, and may be employed as corrosion inhibitors in hydrocarbon streams.