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:
Aug. 15, 1989
Filed:
Aug. 16, 1988
Applicant:
Inventors:
Chris C Dick, Princeton, NJ (US);
Barry Schwartz, Yardley, PA (US);
Bert D McMunn, Princeton Junction, NJ (US);
Peter H Zeh, Fremont, CA (US);
Assignee:
FMC Corporation, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ;
U.S. Cl.
CPC ...
423315 ; 423305 ;
Abstract
A fast-dissolving, non-caking, food grade sodium tripolyphosphate is produced by spraying into a spray dryer an aqueous sodium orthophosphate feed liquor having an Na.sub.2 O:P.sub.2 O.sub.5 ratio of from about 1.60 to about 1.67 containing potassium hydroxide or a soluble potassium salt in amounts to yield about 0.4% to 0.8% by weight potassium in the final product, heating the feed to at least 440.degree. C. to form sodium tripolyphosphate, cooling the sodium tripolyphosphate and adding to it at least about 1% by weight moisture.