| abstract |
The invention discloses a composition for preparing antibacterial polyurethane, the antibacterial polyurethane and a preparation method thereof, wherein the composition comprises the following raw materials in percentage by mole: 20-55% of polymer diol, 55-70% of diisocyanate, 2-15% of chain extender I, 5-20% of chain extender II, 5-25% of chain extender III and 0.05-25% of alkynyl-modified 1, 2-benzisothiazolin-3-one. The antibacterial polyurethane prepared by the invention has selectivity, can selectively kill gram-positive bacteria such as staphylococcus aureus and the like, and the selective contact sterilization capability provides convenience for sterilization requirements in specific scenes, can avoid killing beneficial bacteria and provides possibility for accurate sterilization; in addition, the antibacterial polyurethane is an impermeable contact sterilization, which can avoid environmental pollution and inhibit the generation of bacterial drug resistance. |