Patent GB-975383-A (GB)
Title: Improvements in the antistatic treatment of synthetic hydrophobic textile materials
IPC: D06M15/285
Filed: 1962-10-05
Abstract: A composition suitable for the antistatic treatment of synthetic hydrophobic textile materials comprises (1) a polymer of an alkali metal ethylene sulphonate, an alkali metal allyl sulphonate or a mixture thereof and an acrylamide having the formula <FORM:0975383/C3/1> in which R1 is hydrogen or a methyl or ethyl group and R2 is hydrogen or an alkyl group containing 1-4 carbon atoms, in which the alkali metal sulphonate and the acrylamide are present in molar ratios of from 0.3:1 to 3:1 respectively, (2) a cross linking agent of the type used to impart crease resistance to cellulosic fabrics, and (3) a curing accelerator for the cross-linking agent, e.g. phosphoric, tartaric and oxalic acids, ammonium chloride, di-ethanol-amine hydrochloride, zinc fluoroborate, magnesium chloride, zinc chloride, zinc nitrate and aluminium chloride. The cross linking agent may be a melamine-formaldehyde, guanamine-formaldehyde, urea-formaldehyde, thiourea-formaldehyde, 1,2-propylene urea-formaldehyde, 1,3-propylene urea-formaldehyde, acetone-formaldehyde, or triazone formaldehyde condensate, dimethylol ethylene urea, diglycidyl ether, the diglycidyl ether of ethylene glycol, a uron, formaldehyde or divinyl sulphone. The composition may be applied to the textile material as an aqueous solution and the material then dried at temperatures up to 250 DEG F. and cured at temperatures up to 400 DEG F. The composition may also contain non ionic wetting agents, e.g. nonyl phenol plus 9 mol. ethylene oxide, lubricant softeners and bactericidal agents.ALSO:Synthetic hydrophobic textile materials, e.g. nylon, acrylic, polyester and cellulose acetate fibres, are rendered antistatic by treating them with (1) a polymer of an alkali metal ethylene sulphonate, an alkali metal allyl sulphonate or a mixture thereof and an acrylamide having the formula <FORM:0975383/D1-D2/1> in which R1 is hydrogen or a methyl or ethyl group and R2 is hydrogen or an alkyl group containing 1-4 carbon atoms, in which the alkali metal sulphonate and the acrylamide are present in molar ratio of from 0.3 : 1 to 3 : 1 respectively and (2) a cross linking agent of the type used to impart crease resistance to cellulosic fabrics, the polymer being applied in an amount of 0.25-4% based on the dry weight of the textile material and the cross-linking agent being applied in an amount of 0.05-2% based on the dry weight of the textile material, and then curing in the presence of a curing accelerator for the cross-linking agent, e.g. phosphoric, tartaric and oxalic acids, ammonium chloride, di ethanolamine hydrocloride, zinc fluoroborate, magnesium chloride, zinc chloride, zinc nitrate and aluminium chloride.  The cross-linking agent may be a melamineformaldehyde, guanamine-formaldehyde, urea-formaldehyde, thioureaformaldehyde, 1, 2-propylene urea-formaldehyde, 1, 3-propylene ureaformaldehyde, acetone-formaldehyde, or triazone-formaldehyde condensate, dimethylol ethylene urea, diglycidyl ether, the diglycidyl ether of ethylene glycol, a uron, formaldehyde or divinyl sulphone.  The textile material may be treated with an aqueous solution containing the polymer, cross-linking agent and curing accelerator by immersion, dipping, spraying or padding, dried at temperatures up to 250 DEG F. and cured at temperatures up to 400 DEG F. The treating composition may also contain non ionic wetting agents, e.g. nonyl phenol plus 9 mol. ethylene oxide, lubricant softeners and bactericidal agents. Filaments, fibres or woven, knitted or felted fabrics comprising synthetic hydrophobic fibres alone or in admixture with other fibres, e.g. cotton, may be treated.