One-pot synthetic method for synthesizing silver-containing waterborne polyurethane

摘要

The present invention relates to a one-pot synthetic method for synthesizing silver-containing waterborne polyurethane (WBPU). The method includes the steps of adding a silver ion-containing solution, such as silver nitrate solution, into WBPU emulsion to form a silver-containing PU emulsion by stirring, and dehydrating the silver-containing PU emulsion so as to obtain a WBPU containing nano-scaled silver particles having a uniform particle size and good dispersibility. The present invention provides a method that can be easily and speedily operated, and the silver-containing WBPU prepared according to the method of the present invention exhibits excellent antibacterial, bactericidal and deodorant effects but using a small amount of silver.

主权项

1. A one-pot process of synthesizing waterborne polyurethane containing nano-scaled silver particles, consisting of the following steps:
(a) adding a silver ion-containing solution into a waterborne polyurethane emulsion; (b) stirring the mixture of waterborne polyurethane and silver ion-containing solution to distribute the silver ions through the emulsion whereby the silver ions are reduced to metallic silver, thereby forming nano-scaled silver particles throughout the waterborne polyurethane emulsion.