Manufacture of resin solutions suitable for making lacquers and prepared from resinous ethylene oxide derivatives of phenols

Abstract

Abstract The epoxy resins obtained according to the parent application by reacting resinous polyhydric phenol derivatives containing at least two ethylene oxide groups with polybasic carboxylic acids and dicyandiamide are modified by substituting a polyamine containing at least two -NH2 groups for the dicyandiamide. Polyamines specified are diethylene triamine, triethylenetetramine, 1 : 3-diamino butane, p-phenylene diamine, benzidine. In examples: (1) 73 parts adipic acid dissolved in cyclohexanol and o-dichlorobenzene are reacted with 300 parts dimethyl methane resin and the product is further reacted with 8.5 parts triethylenetetramine; (3) the resinous solution produced in (1) is mixed with hexamethylol-melamine butyl ether in butanol and ethylene glycol monoethyl ether and the mixture heated for 20 minutes at 100 DEG C.

Inventors

No inventors recorded.

Bibliographic Details