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. 02, 2019
Filed:
Sep. 01, 2016
Applicant:
Cytec Industries Inc., Princeton, NJ (US);
Inventor:
Lei Zhang, Stamford, CT (US);
Assignee:
Cytec Industries Inc., Princeton, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B 25/20 (2006.01); C08F 20/00 (2006.01); C01B 25/235 (2006.01); C01B 25/222 (2006.01); C08F 20/06 (2006.01); C08F 20/56 (2006.01); C02F 1/56 (2006.01); C01F 11/46 (2006.01); C02F 1/00 (2006.01); B01D 21/01 (2006.01); C02F 101/10 (2006.01); C02F 103/34 (2006.01);
U.S. Cl.
CPC ...
C01B 25/235 (2013.01); C01B 25/222 (2013.01); C01F 11/46 (2013.01); C02F 1/001 (2013.01); C02F 1/56 (2013.01); C08F 20/06 (2013.01); C08F 20/56 (2013.01); B01D 21/01 (2013.01); C02F 2101/105 (2013.01); C02F 2103/34 (2013.01); C08F 2800/20 (2013.01); C08F 2810/20 (2013.01);
Abstract
Processes for enhancing filtration rate and/or clarification of phosphoric acid produced by the wet process and containing suspended insoluble particulates by adding to one or more stage of the wet process phosphoric acid production stream an effective amount of a reagent including polymeric microparticles characterized as being anionic or amphoteric and having a weight average molecular weight of greater than 60 Million daltons are provided herein.