WATER-ABSORBING COMPOSITIONS AND PROCESSES FOR THEIR MANUFACTURE

摘要

Water-absorbing compositions in granular form, useful in personal hygiene products such as cateminials and diapers and personal care products such as incontinence padding, as well as also in horticultural or agricultural contexts, comprise both super-absorbent water-insoluble polymeric material capable of absorbing water to form a gel without dissolving therein and at least one other water-insoluble but non-polymeric material, the granular composition substantially consisting of a co-granulate between all the water-insoluble materials present wherein each granule contains all said materials in substantially the same relative proportions as those wherein they are present in the composition as a whole. Processes for making such compositions use especially zeolite slurry and/or silica gel with residual sodium sulphate as the non-polymeric material.