Patent GB-653732-A (GB)
Title: Process for softening fibrous materials and the manufacture of products suitable therefor
IPC: D06M13/224
Filed: 1947-06-20
Abstract: Textile materials are softened by treatment with an aqueous dispersion of a compound containing at least one aliphatic chain of at least 12 carbon atoms, the dispersion containing a dispersing agent comprising a water-soluble salt of a condensation product of an N-methylolamide of a higher fatty acid with a mercaptocarboxylic acid and, if desired, in addition, a sulphonation product dispersing agent containing an aliphatic residue of at least 12 carbon atoms. Specified textile materials are wool, silk, cotton, linen, regenerated cellulose fibres, cellulose acetate fibres and polyamide fibres.  The disperse phase may comprise esters and amides of the higher fatty acids, e.g. fatty oils, vegetable and animal fats, and N-hydroxyalkylamides such as stearic acid ethanolamide and oleic acid ethanolamide, and also mineral oils.  Specified condensation product dispersing agents are those of thioglycollic acid with palmitic, stearic or oleic acid N-methylolamides.  Specified sulphonation product dispersing agents are sulphonic acids of benzimidazoles having a side chain of at least 8 carbon atoms which benzimidazoles may be aralkylated, e.g. the sodium salt of N-benzyl-m -heptadecyl - benzimidazole disulphonic acid; carboxylic acid esters of 4-sulphophthalic acid; sulphuric acid esters of higher fatty alcohols; acylated oxyalkyl or aminoalkyl sulphonic acids and highly sulphonated oils.  The materials are impregnated with the dispersion at room or higher temperatures, then squeezed or centrifuged and finally dried.  Specifications 419,010 and 533,219 are referred to.ALSO:Fibrous materials are softened by treatment with an aqueous dispersion of a compound containing at least one aliphatic chain of at least 12 carbon atoms, the dispersion containing a dispersing agent comprising a water-soluble salt of a condensation product of an N-methyolamide of a higher fatty acid with a mercapto-carboxylic acid and, if desired, in addition, a sulphonation product dispersing agent containing an aliphatic residue of at least 12 carbon atoms.  The disperse phase may comprise esters and amides of the higher fatty acids, e.g. fatty oils, vegetable and animal fats, and N-hydroxyalkylamides such as stearic acid ethanolamide and oleic acidethanolamide, and also mineral oils.  Specified condensation product dispersing agents are those of thioglycollic acid with palmitic, stearic or oleic acid N-methylolamides.  Specified sulphonation product dispersing agents are sulphonic acids of benzimidazoles having a side chain of at least 8 carbon atoms which benzimidazoles may be aralkylated, e.g. the sodium salt of N-benzyl-m -heptadecyl-benzimidazole disulphonic acid; carboxylic acid esters of 4-sulphophthalic acid; sulphuric acid esters of higher fatty alcohols; acylated oxyalkyl or aminoalkyl sulphonic acids and highly sulphonated oils.  Specified fibrous materials are wool, silk, cotton, linen, regenerated cellulose, cellulose acetate and polyamide fibres, paper and leather.  Specifications 419,010 and 533,219 are referred to.