| 摘要 |
<p>Liquid concentrate contg. >50% boric acid dissolved in an amine or polyamine or in mixtures of amines and/or polyamines is used as viscous wood- and flame-protecting agent which can be sprayed or brushed on as a paint. Amines may be pri. sec. or tert. and polyamines are pref. di-, tri- or pentamines.</p> |
