Patent ID: 6475978
Filing Date: 2002-11-05
Classification: C11D

Abstract:
A method of making a tablet of a compacted particulate composition wherein the tablet or a region thereof comprises from 15 to 90% by weight of a water-insoluble softening agent, sodium and/or potassium acetate, 5% to 60% by weight of one or more detergent-active components, wherein the tablet or region contains at least 10% by weight of co-granules which contain both the acetate and at least one other ingredient selected from the group consisting of water-soluble and insoluble inorganic compounds and water-soluble organic compounds having no more than 3 carbon atoms in the molecule, the content of the acetate in these co-granules being at least 0.1 mole per 100 gram of co-granules and the other ingredient being at least 5% by weight of the co-granules, comprising the steps of neutralizing acetic acid with a solid basic compound and granulating the resulting mixture wherein the amount of solids added to the acetic acid includes sufficient basic compound to neutralize the acetic acid, and to constitute the at least 5% by weight of the other ingredient which forms co-granules with the acetate, and further comprising the step of adding the co-granules to the remaining ingredients of the particulate composition followed by compacting the composition into a tablet or a region of a tablet.