摘要:
Adherent insoluble coating film of a phenolic resin is obtained by electrolysis of an alkaline-reacting aqueous electrolyte comprising phenol, a mono- or di-substituted phenol with substituent(s) in o- or m-position, and an alkylene diamine, in specific proportions. The current density shall never exceed 10 mA/sq.cm. The voltage is from 2.5 V to 10 V and is preferably kept constant. Coating thickness values exceeding 1 micron and up to about 25-30 microns are obtainable within a short time at the expense of 2-2.5 Faradays per mole deposited phenol. The substituted phenol is preferably o-chloro-phenol, and the diamine is preferably ethylenediamine.
摘要翻译:酚醛树脂的粘附不溶性涂膜通过电解包含苯酚,位于或位置上具有取代基的一取代或二取代苯酚和亚烷基二胺的碱性反应性水性电解质而获得, 比例。 电流密度不得超过10 mA / sq.cm。 电压为2.5V至10V,优选保持恒定。 超过1微米和高达约25-30微米的涂层厚度值可以在短时间内以2-2.5法拉姆/摩尔沉积苯酚为代价。 取代苯酚优选为邻氯酚,二胺优选为乙二胺。