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. 12, 1991
Filed:
Jul. 18, 1989
Applicant:
Inventors:
Daniel Joubert, Trevoux, FR;
Philippe Jost, Taluyers, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Primary Examiner:
Int. Cl.
CPC ...
B01F / ; C09K / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
252135 ; 10628713 ; 10628714 ; 25217413 ; 25217415 ; 252383 ; 252385 ; 2523635 ;
Abstract
A sodium tripolyphosphate employed for the formulation of detergent compositions with a water content ranging from 0.8 to 6% in the form of hexahydrate crystals and containing 0.2 to 2% by weight of siliconate. Also, a process for the preparation of such a sodium tripolyphosphate comprising spraying an aqueous solution containing between 5 and 10% of siliconate at weight onto a sodium tripolyphosphate containing at least 50% of phase 1 and having a particle diameter distribution ranging from 600 to 2,500 microns; and grinding the hydrated tripolyphosphate containing the siliconate to a mean particle diameter ranging from 80 to 200 microns.