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:
Oct. 16, 1979
Filed:
Mar. 14, 1977
Applicant:
Inventor:
Charles W Martin, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ;
U.S. Cl.
CPC ...
252148 ; 252391 ; 252392 ; 252180 ; 2605 / ; 422 12 ;
Abstract
Polyglycolamines such as aminated polypropylene or polybutylene glycols and amine-initiated polypropylene and polybutylene glycols such as oxypropylated or oxybutylated lower alkanolamines inhibit the corrosion of ferrous metals by a nonoxidizing acid such as hydrochloric acid. Polyglycolamines of this class having an average molecular weight in the appropriate range of 300-5000 are effective inhibitors in 5-15 percent hydrochloric acid at moderately elevated temperatures.