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:
Nov. 30, 2004
Filed:
Sep. 06, 2002
Mohand Melbouci, Wilmington, DE (US);
L. Drake Walsh, Wilmington, DE (US);
Hercules Incorporated, Wilmington, DE (US);
Abstract
This invention provides a light white mineral oil-based fluidized polymer suspension (FPS) composition for use as a rheology modifier in paper coatings. It has been found that by using a selected composition of low viscosity oil as a carrier, high solids content and environmental friendly fluidized polymer suspensions of water soluble cellulose derivatives, synthetic water soluble polymers, guar gum and derivatives, starch and derivatives and mixtures thereof, can be prepared. The FPS of the present invention was found to provide unexpected beneficial performance properties when added as a rheology modifier to a paper coating containing standard binders, pigment, and water. The oil-based fluid polymer suspension composition of the present invention for use as a rheology modifier in the paper coating comprises: a hydrophilic polymer, b) an organophilic clay, c) a surfactant stabilizer, and d) a light white mineral oil having selected properties.