Thixotropic clay aqueous suspensions

Details Thixotropic clay aqueous suspensions Thixotropic clay aqueous suspensions

C - Chemistry, Metallurgy

11

D

134/3, 134/51

C11D 3/06 (2006.01) C11D 1/04 (2006.01) C11D 3/12 (2006.01) C11D 3/20 (2006.01) C11D 3/395 (2006.01) C11D 7/14 (2006.01) C11D 17/00 (2006.01) C11D 17/08 (2006.01)

Patent

CA 1301015

THIXOTROPIC CLAY AQUEOUS SUSPENSIONS ABSTRACT OF THE DISCLOSURE The physical stability of liquid gel-like compositions based on montmorillonite, attapulgite, hectorite or other inorganic colloid-forming clay or other thixotropic thickener is greatly improved by incorporating in the composition small amounts, such as 0.1 or 0.2 weight percent, of calcium, magnesium, aluminum or zinc stearate or other polyvalent metal salt of long chain fatty acid. The aqueous compositions containing inorganic builder salts and other functional inorganic salts, chlorine bleach, bleach-stable detergent, thixotropic thickener and polyvalent metal salt of a fatty acid as a physical stabilizer remain stable against phase separation for periods in excess of twelve weeks under a wide range of temperatures. The thixotropic properties can be retained or improved using smaller levels of the clay thixotropic thickener than in the absence of the physical stabilizer. Use as liquid gel-like automatic dishwasher compositions are described.

546121

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