GB953171A - Process for finishing cellulosic textile materials - Google Patents

Abstract

Textile materials comprising a major proportion of natural or regenerated cellulose are reacted in an alkalized condition with a compound containing more than one CH2=CH-CO-N< group in such a manner that there is no substantial loss of water from the material under treatment. Suitable compounds containing more than one CH2=CH-CO-N< group are those of the general formula: <FORM:0953171/C3/1> in which R2 and R3 each represent hydrogen or a methyl or ethyl group, X is a radical of the constitution CH2=CH-CO-, R1 is a alkylene radical containing 1-6 carbon atoms which may be interrupted by -O- or -NCH3- or a radical of the constitution: <FORM:0953171/C3/2> in which X has the meaning given above and m and n are 1, 2 or 3 and when m and n=1, R2 and R3 together represent a methylene radical, the compounds being cyclic substances, e.g. derivatives of perhydrotriazine. Compounds which under the conditions of reaction form CH2-CH-CO-N< groups, e.g. N:N1-bis b -chloropropionyl methylene diamide and 1:3:5-tris-b -chloropropionyl-s-perhydrotriazine, the corresponding esters of alkyl and aryl sulphonic acids and the partial esters of sulphuric and phosphoric acids, may also be used. The alkalization of the cellulose may be carried out at room temperature using sodium or potassium hydroxide, sodium silicate, sodium aluminate, sodium zincate, sodium borate, tertiary sodium phosphate or the corresponding potassium or lithium salts, trimethyl benzyl ammonium hydroxide or tetra ethyl- or tetra methyl ammonium hydroxide or their hydrolysable salts. The alkalizing agent and the compound containing CH2=CH-CO-N< groups may be applied to the textile material in either order or simultaneously. The compounds containing CH2=CH-CO-N< groups may be applied as an aqueous solution, suspension, dispersion or paste or from solution in an inert organic solvent, e.g. acetane or dioxane. After treatment the textile material may be rolled up, if desired covered with a waterproof foil and left at a temperature of 180-150 DEG C. while the reaction takes place. Heating may be effected by steaming. Specification 664,795 is referred to.ALSO:Textile materials, e.g. yarns and fabrics, comprising a major proportion of natural cellulose, e.g. cotton, or regenerated cellulose are crease proofed by reacting them in an alkalised condition with a compound containing more than one CH2 = CH-CO-N< group in such a manner that there is no substantial loss of water from the material under treatment. Suitable compounds containing more than one CH2 = CH-CO-N< group are those of the general formula <FORM:0953171/D1-D2/1> in which R2 and R3 each represent hydrogen or a methyl or ethyl group, X is a radical of the constitution CH2 = CH-CO-, R1 is an alkylene radical containing 1-6 carbon atoms which may be interrupted by -O- or -NCH3- or a radical of the constitution <FORM:0953171/D1-D2/2> in which X has the meaning given above and m and n are 1, 2 or 3 and when m and n = 1, R2 and R3 together represent a methylene radical, the compounds being cyclic substances, e.g. derivatives of perhydrotriazine. Compounds which under the conditions of reaction form CH2-CH-CO-N< groups, e.g. N:N1-bis b chloropropianyl methylene diamide and 1:3:5-tris-b -chloropropionyl-s-perhydro triazine, the corresponding esters of alkyl and aryl sulphonic acids and the partial esters of sulphuric and phosphoric acids may also be used. The alkalization of the cellulose may be carried out at room temperature using sodium or potassium hydroxide, sodium silicate, sodium aluminate, sodium zincate, sodium borate, tertiary sodium phosphate or the corresponding potassium or lithium salts, trimethyl benzyl ammonium hydroxide or tetraethyl-or tetramethyl p ammonium hydroxide or their hydrolysable salts. The alkalioning agent and the compound containing CH2 = CH-CO-N< groups may be applied to the textile material in either order or simultaneously. The compound containing CH2 = CH-CO-N< groups may be applied as an aqueous solution, suspension dispersion or paste or from solution in an inert organic solvent, e.g. aceton or dioxane. After treatment the textile material may be rolled up, if desired covered with a water proof foil and left at a temperature of 18 DEG -150 DEG C. while the reaction take place. Heating may be effected by steaming. The process may be combined with other textile finishing processes, e.g. treatment with divinyl sulphone, 1:3-dichloropropanol, urea-or melamine-formaldehyde compounds or their ethers, compounds containing only one CH2 = CH-CO-N< group acrylic acid and esters thereof, acrylonitrile and maleic acid or the esters or nitrile thereof. Specification 664,795 is referred to.