| 摘要 |
<p>Prepn. contains (a) 20-60 pt.wt. of a 2-amino-diphenyl ether; (b) 20-80 pt. wt. of an oxyethylated castor oil; (c) 0-60 pt.wt. of a di-, tri- or tetra-ethylene glycol monoalkyl ether (alkyl pref. has 1-4C). The solns. are viscous, easily handled, transparent and remain completely free of residue. The addition of ice during the diazotisation is not required. Pref. prepns. contain 35-50wt.% (a), esp. 4,41-dichloro or 4-chloro-2-amino-diphenyl ether, 35-50wt.%, (b) contg. 25-60 mol. esp. 30-45 mol. ethylene oxide and 5-20wt.%(c).</p> |
