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. 26, 2019
Filed:
Jan. 12, 2018
Applicant:
Cytec Industries Inc., Princeton, NJ (US);
Inventors:
Lei Zhang, Stamford, CT (US);
John Carr, Norwalk, CT (US);
Haunn-Lin Tony Chen, Morganville, NJ (US);
Assignee:
Cytec Industries Inc., Princeton, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 25/235 (2006.01); C01B 25/22 (2006.01); C08F 26/02 (2006.01); C08F 222/38 (2006.01); C02F 1/70 (2006.01); C02F 5/12 (2006.01); C23F 14/02 (2006.01); C23F 15/00 (2006.01); C08F 26/04 (2006.01); C09K 15/18 (2006.01); C09K 15/22 (2006.01);
U.S. Cl.
CPC ...
C01B 25/22 (2013.01); C01B 25/235 (2013.01); C02F 1/70 (2013.01); C02F 5/12 (2013.01); C08F 26/02 (2013.01); C08F 26/04 (2013.01); C08F 222/38 (2013.01); C09K 15/18 (2013.01); C09K 15/22 (2013.01); C23F 14/02 (2013.01); C23F 15/005 (2013.01); C08F 2800/10 (2013.01);
Abstract
Processes for inhibiting scale produced during wet process phosphoric acid production by adding a scale-inhibiting amount of a reagent having a primary amine-containing polymer to at least one stage of a wet process phosphoric acid production process are provided herein, wherein said primary amine-containing polymer includes one or more organic moieties that reduce the polymer's solubility in an aqueous environment as compared to its native form, thereby reducing or preventing scale in the wet process phosphoric acid production process.