Poly-octavinyl polyhedral oligomeric silsesquioxane-acrylic acid nano composite auxiliary agent for leather and preparation method therefor
US10676798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2017 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Jan 13, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y35/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a poly silsesquioxane-acrylic nanocomposite auxiliary for leather process and its preparation method. By mixing octavinyl silsesquioxane, organic solvent, ammonium persulfate, distilled water and surfactant in one system, and adding acrylic acid dropwise into the mixing system, cooling to adjust pH to obtain poly silsesquioxane-acrylic nanocomposite auxiliary for leather process. The auxiliary obtained in this invention is easily to penetrate into gap of the collagen fibers, and forms nano and micro-scale combination with the leather collagen, which can further improve the multi-point combination of the acrylic polymer with the collagen. Thus, the filling property of the leather that treated by the auxiliary is improved without affect the yield of leather, and the chromium content in the waste water is significantly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.