Patent ID: 6605583
Filing Date: 2003-08-12
Classification: C11D

Abstract:
A multi-layered cleaning tablet which comprises approximately by weight:(a) 40% to 60% of an colored citric acid in the form of speckles wherein the color can be purple, pink, yellow or red; (b) 20% to 30% of an alkali metal bicarbonate; (c) 2% to 8% of a magnesium containing inorganic salt; (d) 1% to 9% of a clay; (e) 1% to 10% of a sulfonated anionic surfactant; (f) 0.1% to 4% of a crosslinked poly (poly vinyl pyrrolidone) polymer prepared by popcorn polymerization; (g) 0.5% to 1% of an alkali metal or an alkaline earth metal salt of a fatty acid such as magnesium stearate.