Layer fiber product

• Main Authors: HUSMARK, ULRIKA, RYTSEN, FREDRIK
• Format: Patent
• Language: Chinese; English
• Published: 26.08.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; IMPREGNATING OR COATING OF PAPER; LAUNDERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; POLYSACCHARIDES; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

The layer fibrous product comprises at least one layer selected from the group consisting of a nonwoven layer and a tissue layer wherein the at least one layer selected from the group consisting of a nonwoven layer and a tissue layer comprises cellulosic fibers comprising an organic polycarboxylic acid, and wherein the organic polycarboxylic acid has at least one carboxyl group and at least one free carboxyl group covalently bound to the cellulosic fibers. Since there is a covalent chemical bond between the carboxyl group of the polycarboxylic acid and the hydroxyl groups of the cellulosic fibers present in all substrates, the layered fiber product exhibits a lasting acidic pH even after having been rinsed with water. In some embodiments, a persistent acidic pH may be achieved in a nonwoven treated with an organic polycarboxylic acid even after washing with a detergent. 层纤维产品包含选自非织造物层和薄纸层的至少一个层，其中选自非织造物层和薄纸层的至少一个层包含含有有机多元羧酸的纤维素纤维，并且其中有机多元羧酸具有共价结合至纤维素纤维的至少一个羧基和至少一个游离羧基。由于在多元羧酸的羧基与存在于所有基材中的纤维素纤维的羟基之间存在共价化学键，因此层