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:
Jun. 14, 1977
Filed:
Feb. 10, 1975
Applicant:
Inventors:
Paul L Seitz, Houston, TX (US);
Robert K Gabel, Houston, TX (US);
Assignee:
Nalco Chemical Company, Oak Brook, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; B01D / ; C07C / ;
U.S. Cl.
CPC ...
2605 / ; 252358 ; 2604299 ; 2604 / ; 2604 / ; 2605 / ;
Abstract
Linear surfactant polymers, useful in waterflooding processes and as emulsion breakers, can be prepared by reacting various amines, such as hexamethylene diamine, with monofunctional pendant groups, such as propylene oxide, and then further reacting the substituted amines with a difunctional reactant, such as epichlorohydrin, to produce the polymer. The polymers may be combined with certain water-soluble metal salts to improve their efficiency as emulsion breakers and as coagulants.