| 摘要 |
<p>A urea-formaldehyde resin useful as a binder for making a variety of products, and a method for making the resin. The resine is prepared by reacting formaldehyde, urea, and ammonia in at least two under alkaline conditions and optionally neutralizing the resin in a third step. The urea-formaldehyde resin thus produced has good resistance to hydrolysis, cures quickly, and is characterized by low formaldehyde emissions (release).</p> |
