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:
Feb. 22, 2011
Filed:
Dec. 08, 2005
Applicants:
Huai N. Cheng, Avondale, PA (US);
Eric O. Fernandez, Jacksonville, FL (US);
John M. Sheepy, Ontario, CA;
Inventors:
Huai N. Cheng, Avondale, PA (US);
Eric O. Fernandez, Jacksonville, FL (US);
John M. Sheepy, Ontario, CA;
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 19/04 (2006.01); D21H 17/13 (2006.01); D21H 21/12 (2006.01); B01F 3/08 (2006.01); C08L 83/04 (2006.01); B01F 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An oil-in-water emulsion useful as a defoamer for pulp and paper mill applications is described. The defoamer has an oil blend (of a triglyceride oil or a mixture of triglyceride oils and silicone), a stabilizing agent (to make the oil blend stable in the emulsion), hydrophobic silica particles, surfactants, dispersants, and other components. The emulsion is usable directly at low concentrations to control foam.