| 摘要 |
<p>A heat-curable, formaldehyde-free binding agent comprising at least one polyflavonoid tannin selected from the group consisting of tannins of pecan nut, pinus radiata, acacia mearnsii (mimosa), schinopsis and balansae (quebracho) and as a curing catalyst SiO2 or boric acid in an amount up to 10 wt.% is used. The use of the tannin-containing binder for the production of wooden materials or cellulose-based materials.</p> |
