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:
May. 27, 2003
Filed:
Dec. 20, 2001
Applicant:
Inventors:
Duane Treybig, Sugar Land, TX (US);
Kin-Tai Chang, Sugar Land, TX (US);
Dennis Williams, Houston, TX (US);
Assignee:
Ondeo Nalco Energy Services, L.P., Sugarland, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 7/302 ; C08G 5/900 ; C08G 5/910 ; C09K 7/02 ; E21B 3/3138 ;
U.S. Cl.
CPC ...
C08G 7/302 ; C08G 5/900 ; C08G 5/910 ; C09K 7/02 ; E21B 3/3138 ;
Abstract
A water-soluble branched polyhydroxyetheramine, wherein the branched polyhydroxyetheramine is prepared by reacting an amine having two reactive hydrogen atoms with a diepoxide to form a polyhydroxyetheramine and then reacting the polyhydroxyetheramine with an N-alkylating agent, an aqueous composition comprising the branched polyhydroxyetheramine and use of the branched polyhydroxyetheramine to modify the permeability to water of a subterranean formation are disclosed.