GB456142A - Improvements relating to assistants for use in the textile, leather, paper and like industries - Google Patents

Abstract

As assistants for emulsifying, cleaning, wetting, softening, and levelling when treating textiles, leather, paper, &c., there are used fatty acids of the soap-forming type (or a salt, amide, arylide, ester or other functional derivative of such an acid), containing in the CH2 group adjacent to the carboxyl a hydrophilic residue as set out below, containing an acid group, for instance, --COOH, --SO3H, --O.SO3H, --OPO3H2 and --S.SO3H. The hydrophilic residue is as follows: <FORM:0456142/IV/1> in which formul R and R<1> represent any carbon-containing residue which may itself contain a hydrophilic residue of the above form, and R<1> may also represent hydrogen, X represents a hydroxyl group or an acid residue, and an oxygen atom directly connected to the a -carbon of the fatty acid residue may be replaced by sulphur, provided that the residue is not thereby given an acid character. Suitable assistants are obtained by the reaction of an a -halogen fatty acid with an amino acid, for instance, aminoacetic acid, diglycolamic acid, sarcosine, tyrosine, zystein, di- and poly-peptides, albumen and its degradation products, anthranilic acid, aminosulphonic acids, taurine, methyltaurine, phenyltaurine and sulphanilic acid; they may also be made by reaction of a -oxy or a -amino fatty acids with halogen carboxylic or sulphonic acids or their chlorides, and in the latter case the products may be reacted with sodium sulphite, sodium thiosulphate or potassium cyanide; moreover they may also be prepared from the products containing non - acid hydrophilic residues as set out above, by condensing with acid groups, for example, the product obtained from a -bromo fatty acid or its ester and monoethanolamine may be converted into the sulphuric acid ester by means of sulphuric acid or aminosulphonic acid. In examples, a product suitable for brightening viscose silk is obtained by heating under reflux a -bromolauric acid in methanol-water with caustic soda and aminopropionic acid; a softening or washing agent by heating under reflux a -bromostearic acid in methanol with caustic soda and sarcosine; a washing agent by heating a -bromolauric acid methyl ester with sodium taurine in a current of xylene; a compound stable to lime, magnesium salts and acids by heating under reflux a mixture of a -bromostearic acid butyl ester, methanol, sodium methyltaurine and caustic soda. Specification 455,310 is referred to.ALSO:As assistants for effecting emulsification in the treatment of textiles, paper, leather, &c., there are used fatty acids of the soap-forming type (or a salt, amide, arylide, ester or other functional derivative of such an acid containing a hydrophilic residue as set out below, containing an acid group, for instance, --COOH, --SO3H, --O.SO3H, --OPO3H2, and --S.SO3H. The hydrophilic residue is as follows <FORM:0456142/III/1> ; in which formul R and R<1> represent any carbon-containing residue which may itself contain a hydrophilic residue of the above form, and R<1> may also represent hydrogen, X represents a hydroxyl group or an acid residue, and an oxygen atom attached directly to the a -carbon of the fatty acid residue may be replaced by sulphur provided that the residue is not thereby given an acid character. Suitable assistants are obtained by the reaction of an a -halogen fatty acid with an amino acid, for instance, aminoacetic acid, diglycolamic acid, sarcosine, tyrosine, zystein, di- and poly-peptides, albumen and its degradation products, anthranilic acid, aminosulphonic acids, taurine, methyltaurine, phenyltaurine and sulphanilic acid; they may also be made by reaction of a -oxy or amino fatty acids with halogen carboxylic or sulphonic acids or their chlorides; they also may be prepared from products containing non-acid hydrophilic residues by condensing with acid groups, for example, the product obtained from a -bromo fatty acid or its ester and mono-methanolamine may be converted into the sulphuric ester by means of sulphuric acid or aminosulphonic acid. Specification 455,310 is referred to.