GB466096A - Manufacture of aldehyde condensation products and manufacture of lacquers therewith - Google Patents

Abstract

Lacquers are prepared containing a condensation product of an aldehyde or a substance that yields an aldehyde with an aminotriazine or a derivative thereof containing at least one replaceable hydrogen atom. Suitable aminotriazines include melamine, melam, melem, melone, ammelin, ammelide, formoguanamine, 2-chloro-or 2-(p-oxyphenyl)-4-6-diamino - 1 - 3 - 5 - triazine, 2 - phenyl - 4-amino - 6 - oxy - 1 - 3 - 5 - triazine, alkyl-, aryl- and arylmelamines or the iso-derivatives of the aminotriazines. Suitable aldehydes include formaldehyde, paraformaldehyde, benaldehyde and furfurol. Other substances p capable of condensation with aldehydes to form resins such as phenols, urea, thiourea or aniline may be present in the resin-forming condensation, or performed condensates may be added to the aminotriazine condensates before or after their formation. Other substances such as dyestuffs, water-repelling agents, filling materials or softeners may be added at any time. In examples: (1) a methylolmethamine is dissolved in butyl alcohol containing hydrochloric acid and heated to yield a lacquer which may be mixed with a nitrocellulose lacquer; (2) an alcoholic solution prepared by condensing melamine and alcoholic formaldehyde in the presence of hydrochloric acid is mixed with a paste obtained by mixing nitro cellulose, tricresyl phosphate, butyl alcohol, ethyl acetate and toluene, and the mixture diluted for use as a lacquer with a mixture of toluene, alcohol and ethyl acetate; (3) formoguanamine is condensed with aqueous formaldehyde to produce a solution that may be used as a lacquer; (4) melamine is condensed with alcoholic formaldehyde in the presence of hydrochloric acid and the monoglyceride of linoleic acid to yield a solution which on dilution with benzene may be used as a lacquer. Specifications 455,008, 468,677, and 468,746 are referred to.