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. 28, 2003
Filed:
Feb. 04, 1999
Applicant:
Inventor:
Grahame N. Taylor, Houston, TX (US);
Assignee:
Ondeo Nalco Company, Naperville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 1/705 ; C10G 3/304 ; C08L 7/504 ; C08G 1/850 ;
U.S. Cl.
CPC ...
B01D 1/705 ; C10G 3/304 ; C08L 7/504 ; C08G 1/850 ;
Abstract
Water-in-Oil emulsions are demulsified using adducts of a) polyalkylene glycols (PAGS) having a molecular weight greater than 6,500 and up to 60,000, ethylene oxide (EO), and diisocyanates (DIs) or b) polyalkylene glycols (PAGs) having a molecular weight greater than 6,500 and up to 60,000 and diisocyanates (DIs). The preferred PAG is polypropylene glycol and the preferred DIs are meta or para tetramethylxylene diisocyanate and toluene diisocyanate.