GB974900A - Isocyanurates and polymeric materials therefrom - Google Patents

Abstract

The invention comprises isocyanurates of formula <FORM:0974900/C1/1> wherein R, R1 and R11 each represents an alkyl group containing not less than three carbon atoms, an aryl, aralkyl, or a cycloalkyl group. They are prepared by reacting an alkyl (not less than three carbon atoms), aryl, aralkyl, or cycloalkyl chloroformate with a metal cyanate, such as sodium cyanate. A preferred range of temperature is 40 DEG to 150 DEG C. and a solvent, such as acetonitrile and butyrolactone, may be present. Examples describe the preparation of triscarbobutoxy and carbopropoxyisocyanurates. Polymers are prepared by condensation of the products with polyhydroxy, aminohydroxy, or polyamino compounds.ALSO:Isocyanurates of formula <FORM:0974900/C3/1> wherein R, R1 and R11 each represents an alkyl group containing not less than three carbon atoms, or an aryl aralkyl, or a cycloalkyl group (see Division C2) are reacted with at least one polyhydroxy, aminohydroxy or polyamino compound to form polymeric materials. Ethylene glycol, butane-1:4-diol, trimethylolpropane, polyethers e.g. polyethylene glycol, polypropylene glycol, oxypropylated glycerol, oxypropylated tolylenediamine-diamine, polyesters e.g. polyethylene and polydiethylene adipate, and resins such as adipic/phthalic and/or mixtures of polyols such as glycerol/diethylene glycol, ethanolamine, 6-aminohexan -1- ol, diethanolamine, hexamethylene diamine, m- and p-phenylenediamines, polyethyleneamine and amino-ended polyamides and polyureas may be used. The reaction may be by heating at between 100 DEG and 250 DEG C. and solvents, catalysts e.g. metal oxide, tetrabutyl titanate, and dibutyl tin dilaurate, and pigments, anti-oxidants, flame retarders and flow improvers may be present. Examples describe the reaction of tris-carbobutoxy and tris carbopropoxyisocyanurates with a polyester from hexantriol, phthalic anhydride and adipic acid, a butylated urea/formaldehyde resin, methyl isobutyl ketone, cyclohexanone, and diacetone alcohol.ALSO:Isocyanates of formula <FORM:0974900/B1-B2/1> wherein R, R1 and R11 each represents an alkyl group containing not less than three carbon atoms, or an aryl, aralkyl or a cycloalkyl group (see Division C2) are interacted with at least one polyhydroxy, amino hydroxy or polyamino compound to form a polymer which may be used as a coating composition. Tris-carbobutoxy and tris-carbopropoxy isocyanates with a polyester resin, a butylated urea formaldehyde resin, methyl isobutyl ketone cyclohexanone and diacetone alcohol may be applied to steel panels cured at 180 DEG C. for 30 minutes to form a hard coating.