Patent ID: 8075635
Filing Date: 2011-12-13
Classification: C11D,Y10T

Abstract:
1. A production process for a “dye scavenging” and “limescale scavenging” material comprising the following steps: a) providing a substrate selected from the group consisting of: natural and/or synthetic fabric, natural and/or synthetic non-woven fabric and paper; b) treating the substrate with an additive comprising a cationic heterocyclic polymer; c) eliminating excess additive by passing the substrate between two or more rollers, and then allowing the substrate to rest for a period of time comprising between 30 minutes and 24 hours, optionally rolled up and rotating; d) drying the substrate; e) applying onto the semi-finished substrate obtained from step d) a dense mixture comprising at least one calcium and magnesium ion sequestrant selected from polyacrylate, polyphosphonate, an EDTA salt; f) drying the substrate, so as to obtain the finished product.