Resin mixt. used in mfr. of laminates - contains urea formaldehyde resin, melamine, di:cyano:di:amide and aliphatic alkanol
摘要
<p>Resin mixt. contains (a) 55-95 wt.% urea-HCHO (UF) resin, (b) 1-20 wt.% melamine, (c) 1-20 wt.% dicyandiamide, (d) 1-30 wt.% aliphatic 2-4 C alkanol with at least 2 alcoholic OH gps. (polyol A) or an ether contg. at least 2 alcoholic OH gps. with 2-10 units derived from polyol A. Also claimed are aq. solns. contg. 40-80 wt.% of the resin mixt.; and bonded fibrous laminates.</p>
