GB911485A - Textile treatment - Google Patents

Abstract

Condensation products suitable for the antistatic treatment of textiles are produced by reacting a water-soluble polyamine, prepared from an alkylene oxide condensate of molecular weight within the range 200-1,000 and containing at least two primary amino groups and at least one polyalkylene oxide chain, with an organic compound containing two or more nitrogen alkylating groups attached to an organic radical which may be substituted by other groups and the main chain of which may be interrupted by not more than three ether oxygen atoms. The polyamines may be prepared by reacting alkylene oxide condensates having molecular weights of 200-1,000, e.g. polyethylene glycols, ethylene oxide condensates of polyhydroxy compounds such as glycerol, sorbitol or pentaerythritol, amines such as methylamines, ethylamine or cetylamine or amides or mixed ethylene oxide/propylene oxide or mixed ethylene oxide/butylene oxide condensates, with thionyl chloride and replacing the chlorine atoms by reaction with ammonia or with acrylonitrile and converting the products to amines by catalytic hydrogenation. The organic compounds containing two or more nitrogen-alkylating groups may be chlorides, bromides, iodides, sulphates, methane sulphonates, benzene sulphonates or p-toluene sulphonates of aliphatic polyhydroxy compounds, e.g. ethylene glycol, diethylene glycol, propylene glycol, hexamethylene glycol, glycerol or pentaerythritol.ALSO:Textiles, e.g. cellulose acetate, polyamides, polyethylene terephthalate and polyacrylonitrile fibres are rendered antistatic by treating them with a condensation product obtained from a water-soluble polyamine, prepared from an alkylene oxide condensate of molecular weight within the range 200-1000 and containing at least two primary amino groups and at least one polyalkylene oxide chain, by interaction of the polyamine with an organic compound containing two or more nitrogen-alkylating groups attached to an organic radical, which may be substituted by other groups and the main chain of which may be interrupted by not more than three ether oxygen atoms and then heating the textiles to a temperature of from 130 DEG to 210 DEG C. The polyamines may be prepared by reacting alkylene oxide condensates having molecular weights of 200-1000, e.g. polyethylene glycols, ethylene oxide condensates of polyhydroxy compounds such as glycerol, sorbitol or pentaerythritol, amines such as methylamine, ethylamine or cetylamine or amides or mixed ethylene oxide/propylene oxide or mixed ethylene oxide/butylene oxide condensates, with thionyl chloride and replacing the chlorine atoms by reaction with ammonia or with acrylonitrile and converting the products to amines by catalytic hydrogenation. The organic compounds containing two or more nitrogenalkylating groups may be chlorides, bromides, iodides, sulphates, methane sulphonates, benzene sulphonates or p-toluene sulphonates of aliphatic polyhydroxy compounds, e.g. ethylene glycol, diethylene glycol, propylene glycol, hexamethylene glycol, glycerol or pentaerythritol. The reaction between the polyamine and the alkylating agent may be effected in two stages, in the first stage partial condensation being achieved by reacting at a low temperature, by partially neutralising the amine before condensation with a volatile weak acid, e.g. acetic acid, or by using an alkylating agent in which the two alkylating groups are of different reactivities, e.g. 1-bromo-3-chloropropane or 2-chloroethyl-p-toluene sulphonate. The partially condensed material may then be applied to the textile material from aqueous or aqueousalcoholic solution or dispersion and the final stage of condensation carried out on the textile material itself. After application of the condensation product the textile material is dried and then heated to 130 DEG -210 DEG C. From 0.1 to 5% by weight of the condensation product is preferably applied to the textile material.