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:
Apr. 12, 2016
Filed:
Jan. 14, 2013
Applicant:
Xerox Corporation, Norwalk, CT (US);
Inventors:
David John William Lawton, Stoney Creek, CA;
Santiago Faucher, Oakville, CA;
Assignee:
XEROX CORPORATION, Norwalk, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 13/00 (2006.01); B82Y 40/00 (2011.01); A61K 8/11 (2006.01); A61K 9/51 (2006.01);
U.S. Cl.
CPC ...
B82Y 40/00 (2013.01); A61K 8/11 (2013.01); A61K 9/51 (2013.01); B01J 13/0091 (2013.01); Y10T 428/2982 (2015.01); Y10T 428/2998 (2015.01);
Abstract
The process for manufacturing porous nanoparticles disclosed herein includes feeding a dry-blended mixture of at least one resin and a neutralizing agent into a feed section of a screw extruder, injecting a surfactant solution downstream of the hopper, and adding an aqueous composition both directly after the surfactant solution as well as further downstream. Porous nanoparticles having a particle size of from about 50 nm to about 2 μm and a pore diameter of from about 20 nm to about 400 nm may be continuously recovered from the extruder following this process.