One-pot synthetic method for synthesizing silver-containing waterborne polyurethane
US8877861B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 4, 2008 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Feb 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31609
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.