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:
Jul. 28, 2009
Filed:
Dec. 20, 2004
Applicants:
Steven P. Newman, Southampton, GB;
Carl Hahn, Sugar Land, TX (US);
Robert D. Mcclain, Keller, TX (US);
Inventors:
Steven P. Newman, Southampton, GB;
Carl Hahn, Sugar Land, TX (US);
Robert D. McClain, Keller, TX (US);
Assignee:
Nalco Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 17/04 (2006.01); B01D 17/05 (2006.01); C08G 63/66 (2006.01); C08G 69/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides environmentally friendly demulsifiers for the break down of petroleum oil applications. The demulsification formulations of the present invention are biodegradable and are low in toxicity. The demulsifiers include a poly(tetramethylene glycol) and an alkylene glycol copolymer linked to the poly(tetramethylene glycol) by a difunctional coupling agent.