Polyurethane Foam Surface-coated With Chitosan And Method For Manufacturing The Same

• Main Authors: KO DONG JUN, PYUN DO GI, YOUN HYOUNG SOON, SIN JEONG IL
• Format: Patent
• Language: English; Korean
• Published: 24.03.2020
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

The present invention provides a method of manufacturing a polyurethane foam surface-coated with chitosan, the method comprising the steps of: (1) manufacturing a polyurethane foam of a continuous sheet containing calcium ions; and (2) forming a chitosan coating layer on a surface of the polyurethane foam in a roll-to-roll manner capable of controlling the thickness of a chitosan coating liquid. The polyurethane foam of the present invention is excellent in absorption speed and absorption power. 본 발명은 (1) 칼슘이온이 포함된 연속식 시트의 폴리우레탄 폼 제조단계; 및 (2) 상기 폴리우레탄 폼 일면에 키토산 코팅액을 두께조절이 가능한 롤투롤(roll to roll) 방식으로 키토산 코팅층이 형성되는 단계를 포함하는 키토산으로 표면 코팅된 폴리우레탄 폼 제조방법을 제공한다.