Verfahren zur Herstellung von disubstituierten 2,4,5-Triketo-imidazolidinen

摘要

1317001 Coated wire REICHHOLD-ALBERT-CHEMIE AG 2 April 1970 [2 April 1969 24 April 1969] 15731/70 Heading B2E [Also in Divisions C2 C3 and C4] In example 38, copper wires are coated with a solution of a polymer derived from 1,4-diethoxalylamino-benzene and 4,4'-diisocyanodiphenyl methane formed in dimethylacetamide, hexamethylphosphoric acid triamide and triethylamide at 70-80‹C and which polymer contains an imidazolidine ring in the repeat unit. A thermal treatment for 160 seconds at 430‹C yields a coating with high chemical thermal stability.