Coated sodium percarbonate particles, a process for their production and detergent, cleaning and bleaching compositions containing them
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 19, 1997
Grant Date -
N/A
app pub date -
Oct 2, 1995
filing date -
Apr 10, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Sodium percarbonate is often used in the form of coated particles to increase its storage stability in detergents. Sodium percarbonate particles coated in accordance with the invention have a coating containing reaction products from the reaction of a dialkali metal tetraborate or alkali metal pentaborate with aqueous hydrogen peroxide. Preferred coating components are: perborax with the formula Na.sub.2 B.sub.4 O.sub.7 .multidot.H.sub.2 O.sub.2, where n =2 or 4. The coated sodium percarbonate particles are produced by coating the percarbonate particles using a solution containing the reaction products mentioned above. Detergent, bleaching and cleaning compositions containing sodium percarbonate particles coated in accordance with the invention are distinguished by very high stability in storage.
First Claim
Other Claims data not available