# US 11,998,425 B2 · Fiber materials with improved properties for use in wound treatment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,998,425 B2 - Document ID: US11998425B2 - Status: Granted - Kind: B2 - Application number: 18/146,501 - Filed: 2022-12-27 - Published: 2023-05-04 - Granted: 2024-06-04 - Earliest claimed: 2017-01-25 - Assignees: Mölnlycke Health Care AB - Applicants: MöLnlycke Health Care AB - Inventors: Erik Carlsson - Web page: https://patentgrep.com/patent/US11998425B2 ## CPC - A61F 13/0209: {comprising superabsorbent material} - A61F 13/0213: {the fluid retention member being a layer of hydrocolloid, gel forming material} - A61L 15/24: Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof {(A61L15/225 takes precedence)} - A61L 15/26: Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof {(A61L15/225 takes precedence)} - A61L 15/28: Polysaccharides or their derivatives {(A61L15/225 takes precedence)} - A61L 15/46: Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria - A61L 15/60: Liquid-swellable gel-forming materials, e.g. super-absorbents - D04H 1/425: Cellulose series - D04H 1/4258: Regenerated cellulose series - D04H 1/4309: Polyvinyl alcohol - A61L 2300/404: Biocides, antimicrobial agents, antiseptic agents - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B) ## Abstract Described is a fiber material having a substrate of non-ionic, non-woven fibers, and at least one additional component, which is an agent that comprises at least one group capable of forming a hydrogen bond, wherein the non-ionic, non-woven fibers are crosslinked by the agent. The fiber material can be of use in various fields, in particular household products, hygiene products and the like, these fiber materials are of particular use in wound treatment. ## Claims ### Claim 1 A fiber material comprising: a substrate of non-ionic, non-woven fibers, and at least one additional component, which is an agent that comprises at least one group capable of forming a hydrogen bond, wherein the non-ionic, non-woven fibers are crosslinked by the agent. ### Claim 2 (depends on 1) The fiber material according to claim 1, wherein the non-ionic, non-woven fibers comprises polyvinyl alcohol (PVA), a polysaccharide, and/or a polyurethane polymer with polyethylene glycol (PEG) and/or polypropylene glycol functionalities, and/or copolymers thereof. ### Claim 3 (depends on 1) The fiber material according to claim 1, wherein the agent that comprises the at least one group capable of forming a hydrogen bond comprises at least one of the following groups: a hydroxyl group, a carboxyl group, an amino group, a sulfhydryl group, and/or hydrogen donor linkages comprising a glycolytic linkage, or a peptide bond. ### Claim 4 (depends on 1) The fiber material according to claim 1, wherein an amount of agent in the fiber material, relative to the overall weight of the fiber material, is from 1% w/w to 40% w/w. ### Claim 5 (depends on 1) The fiber material according to claim 1, further comprising at least one antimicrobial agent. ### Claim 6 (depends on 1) The fiber material according to claim 1, further comprising at least one absorbing material. ### Claim 7 (depends on 1) The fiber material according to claim 1, wherein a wet tensile strength of the fiber material is increased by at least 5%, as compared to an otherwise identical fiber material without the at least one agent comprising the at least one group capable of forming a hydrogen bond. ### Claim 8 (depends on 1) The fiber material according to claim 1, wherein the substrate of non-ionic, non-woven fibers is a web of non-ionic, non-woven fibers. ### Claim 9 (depends on 1) The fiber material according to claim 1, wherein the substrate of non-ionic, non-woven fibers comprises cross-linked PVA. ### Claim 10 (depends on 1) The fiber material according to claim 1, further comprising at least one superabsorbent material in the form of particles. ### Claim 11 (depends on 1) The fiber material according to claim 1, wherein the amount of agent in the fiber material, relative to the overall weight of the fiber material, is from 15% w/w to 25% w/w. ### Claim 12 (depends on 1) The fiber material according to claim 1, wherein the agent comprises at least two groups capable of forming a hydrogen bond. ### Claim 13 A process for making a fiber material comprising the following steps: providing at least one non-ionic fiber material, which is present as a non-woven substrate; bringing said at least one non-ionic fiber material into contact with at least one agent that comprises at least one group capable of forming a hydrogen bond, thereby crosslinking the non-ionic fiber material by the agent. ### Claim 14 (depends on 13) The process according to claim 13, further comprising the following step: drying the non-ionic fiber material and the agent as brought into contact with each other. ### Claim 15 (depends on 13) The process according to claim 13, wherein the at least one agent that comprises the at least one group capable of forming a hydrogen bond and that is brought into contact with at least one non-ionic fiber material is provided as a compound that is dissolved or is distributed in a liquid.