| 摘要 |
<p>Fibres are impregnated with a soln. (pref. aqs.) of aluminium nitrate (pref. 5-30 g/l) and an N-methylol deriv. of carbmates, 4,5-dihydroxy-ethylene-urea, 4,5-dimethoxy-ethylene-urea or 4-methoxy-5,5-dimethyl-propyene-urea, resistant to hydrolysis (pref. 50-150 g/l.e and hardening at 90-130 degrees C for 1-3 min. The method is better than the pad-dry cure, pad-store and pad-dry-store methods.</p> |
