| 摘要 |
<p>The invention relates to multricrystalline melamine powder having the following properties: specific surface area: 0.7-5 m2/g, content of oxygen-containing components <0.7 wt.%, APHA colour less than 17, melam: higher than 1.5 wt.%. The invention further relates to amino-formaldehyde resin in which multicrystalline melamine with a melam content higher than 1.5 wt.% is used.</p> |
