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AssigneeFinanciere Elysees Balzac
InventorsChristophe Chalvin, Jerome Ducommun, Jean-Luc Wertz
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A first object of the present invention is constituted by regenerated cellulose based materials, in particular those selected from cellular cellulose materials, fibers, filaments, sheets, textiles and non-woven materials. They contain an effective quantity of at least one chemical agent which improves the resistance of the material to bleach; the chemical agent containing in its structure at least one nitrogen atom .alpha. to a carbon atom and being fixed by at least one covalent bond to the cellulose lattice and/or being trapped in said lattice. Further objects are constituted by the use of chemical agents to improve the resistance to bleach of regenerated cellulose based materials, in particular sponges, and a process for the preparation of these materials.
A cellular cellulosic material containing a cellulose lattice and 0.1 to 5% by weight, with respect to the weight of dry cellulose, of at least one cross-linked polymeric agent improving resistance of the cellulose lattice to bleach and contained in the lattice in a stable manner to ensure durable protection of the lattice aganst the bleach;
A cellular cellulosic material containing a cellulose lattice and 0.1 to 5% by weight, with respect to the weight of dry cellulose, of at least one cross-linked polymeric agent improving resistance of the cellulose lattice to bleach and contained in the lattice in a stable manner to ensure durable protection of the lattice against the bleach produced by forming a cellulose solution and incorporating in the cellulosic material cross-linkable polymers selected from the group consisting of:
Dependencies are inferred from the claim text.