GB1124271A - Process for treatment of shaped articles - Google Patents

Abstract

Polyesteramides are prepared by condensing an aliphatic dicarboxylic acid with a mixture of (a) a hydroxypolyoxyalkylene compound and (b) an aliphatic or cycloaliphatic amino-acid or lactam and/or an aliphatic or cycloaliphatic diamine. The dicarboxylic acid may be a C2- 12 polymethylene dicarboxylic acid, e.g. adipic or sebacic acid. The hydroxypolyoxyalkylene compound may have C2- 4 alkylene groups and a molecular weight of 300-6000. It may be prepared by addition of an alkylene oxide, e.g. ethylene or propylene oxide to a diol or higher polyol, a primary amine, a polyamine, a diamide, a polycarboxylic acid, or a po yhydric phenol. Compounds specified include polyoxyethylene glycol and ethylene oxide adducts of glycerol and octadecylamine. The amino-acid or lactam may be a C4- 12 polymethylene amino-acid or the corresponding lactam, e.g. caprolactam. The diamine may be a C2- 12 polymethylene diamine, e.g. hexamethylene diamine or the amine groups may be secondary. The diamine may be replaced by its salt with the carboxylic acid. The ratio of reactants may be such that the number of carboxyl groups present equals the sum of the amino and hydroxyl groups and so that the polyoxyalkylene compound constitutes 10-95% of the total reactants. The condensation may be at 150-300 DEG C., under an inert atmosphere, e.g. N2 and in the presence of antioxidants and stabilizers. A solvent or flux, e.g. o-phenyl phenol, may be added and distilled off after the reaction. The latter stages of the reaction may be carried out under reduced pressure. In Example (6) the reaction is carried out initially in a sealed tube. Finishing compositions for shaped articles, e.g. textiles, may be derived from the products of the invention. The material may be dissolved or dispersed in water or an aqueous or non-aqueous organic solvent, e.g. aqueous isopropanol. The solution or dispersion may also contain other polyesteramides prepared according to the invention, cross-linking agents, resin precondensates and catalyst for these, and antioxidants or thermal stabilizers. Compounds specified include dimethyol ethylene urea as a cross-linking agent, urea/formaldehyde resin and methylated urea/formaldehyde resin as resin precondensates, Zn(NO3)2 and NH4Cl as catalysts and bis-[2-hydroxy-3-(2-methylcyclohexyl) - 6 - methyl - phenyl] methane as anti-oxidant. After application the composition may be dried at up to 120 DEG C. or baked at 120-220 DEG C.ALSO:The invention comprises application of a condensation product of (a) an aliphatic dicarboxylic acid, (b) a hydroxypolyoxyalkylene compound and (c) an aliphatic (including cycloaliphatic) amino-acid or diamine to a shaped article, e.g. a textile fabric, of polymeric material. Each component (a), (b) and (c) may comprise a mixture of compounds and 10-95% of the reaction mixture may be component (b). 0.1 to 5% of the condensate in an aqueous medium may be applied to the textile fabric at room temperature or a temperature up to 50 DEG C. A cross-linking agent, a resin precondensate, a catalyst and/or an anti-oxidant may also be applied in the same aqueous medium or separately. The treated article may be dried at up to 120 DEG C and optionally further heated up to 220 DEG C. It may then be washed in hot detergent solutions and rinsed. This treatment which improves the moisture absorbency, anti-static properties, abrasion resistance and crease recovery of the textile may be carried out together with other treatments, e.g. the addition of optical brighteners. In Examples condensation products are derived from (a) adipic acid and sebacic acid, (b) polyoxyethylene glycol, an ethylene oxide-glycerol adduct and an ethylene oxide-octadecylamine adduct and (c) hexamethylene diamine or caprolactam. These condensates are dispersed in water or an isopropanol-water mixture and applied to polyamide, polyacrylonitrile, polyester, cotton, and cellulose triacetate fabrics sometimes together with urea-formaldehyde precondensate, methylate urea-formaldehyde precondensate, or dimethylol urea, catalysts: NH4Cl and Zn(NO3)26H2O and antioxidant: bis [2-hydroxy-3 (ortho-methylcyclohexyl)-5-methylphenyl] methane.