Preparation method of remaining needle fixing dressing surface layer polyurethane semi-permeable membrane

• Main Authors: HAN YANLONG, CUI RONGJUN, LIU CHUNLING, SUN KAI, XU HONGNA, GUI JINQIU, CHAO YUEGANG, CAI KERUI, YAN LEI, WANG YAN
• Format: Patent
• Language: Chinese; English
• Published: 12.06.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; 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; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a preparation method of a remaining needle fixing dressing surface layer polyurethane semi-permeable membrane, and relates to the technical field of polyurethane materials. Thepreparation method comprises the following steps: firstly, synthesizing a -NCO-terminated polyurethane prepolymer from polyether glycol and toluene diisocynate, reacting -NCO on the polyurethane prepolymer structure with -OH on the N-hydroxyethyl acrylamide structure by taking N-hydroxyethyl acrylamide as a modifier to generate an amide modified polyurethane prepolymer, and adding auxiliary materials in a matching manner to prepare the polyurethane semi-permeable membrane. The prepared polyurethane semi-permeable membrane is good in waterproof and breathable performance, and is far superior to a conventional polyurethane membrane in the field, so that the use requirement of the remaining needle fixing dressing is well met. 本发明公开了一种置留针固定敷料面层聚氨酯半透膜的制备方法，涉及聚氨酯材料技术领域，先利用聚醚二元醇和甲苯二异氰酸酯合成-NCO封端的聚氨酯预聚体，再以N-羟乙基丙烯酰胺作为改性剂，聚