Patent GB-864432-A (GB)
Title: A process for finishing textiles
IPC: D06M15/423
Filed: 1958-04-09
Abstract: <FORM:0864432/IV (a)/1> Compounds for treating textiles are formed by condensing formaldehyde and a compound having terminal NH2 groups and the formula H-(UZ)n U-H, wherein n is 1 to 4, each U is a urea, thiourea, guanidine and dicyandiamide molecule or the mono- and di-(N-alkyl and N-aryl) derivatives thereof from which molecule or derivative 2, 3 or 4 hydrogen atoms have been removed and Z represents an aliphatic chain which may be substituted by one or more basic or neutral groups or represents a cyclic grouping.  The reaction product is capable of forming methylol groups with formaldehyde.  The amino component may be obtained by reacting urea with a diamine in the molecular proportions 3 : 2, 4 : 3 or 5 : 4, the aliphatic chains in the molecule of which may be substituted with oxygen bridges, CO, NO2 or NH2 groups or halogen atoms, or with 1, 3-imidazolone-2 in the mol ratios of 2 : 1 or 3 : 2 giving products having 1 or 2 imidazoline rings; or by reacting 2 or 3 mols of a urea-imidazolone reaction product having the formula:- <FORM:0864432/IV (a)/2> with 1 or 2 mols of ethylene diamine; the condensation products may be used in conjunction with other methylol-urea or methylol melamine compounds.  In Examples, (1) formaldehyde is condensed with the reaction product of 1 mol of 1, 3 imidazolidone with 2 mols of urea; (3) A textile fabric is impregnated with a solution containing a condensate of 1,6 mols of formaldehyde with 1 mol of urea and a compound of the formula HOCH2 NHCONH C2 H4 NHCON HC2H4 NHCONHCH2 OH and ammonium chloride as an acid yielding catalyst, dried, and heated at 140 DEG -145 DEG C.; (4) A fabric is impregnated with a solution containing a 1,6 : 1 methylol urea and the compound HOCH2 NHCONHC2 H4 NHCONHC2 H4 NHCONH CH2 OH and ammonium sulphate, dried and heated at 140 DEG C.ALSO:<FORM:0864432/IV(c)/1> Textiles are treated with a condensate of formaldehyde and at least one reaction product having terminal NH2 groups and obtained from urea, thiourea, guanidine and dicyandiamidine and the mono- and di-(N-alkyl and N-aryl) derivatives thereof, which is capable of forming methylol groups with formaldehyde.  The amino component may be obtained by reacting urea with a diamine in the molecular proportions 3 : 2, 4 : 3 or 5 : 4, the aliphatic chains in the molecule of which may be substituted with oxygen bridges, CO, NO2 or NH2 groups or halogen atoms, or with 1, 3-imidazolone-2 in the mol ratios of 2 : 1 or 3 : 2; or by reacting 2 or 3 mols of a urea-imidazolone reaction product having the formula: <FORM:0864432/IV(c)/2> with 1 or 2 mols of ethylene diamine; the condensation products may be used in conjunction with other methylol-urea or methylol melamine compounds.  In Examples, (1) cotton fabric is impregnated with a solution containing the methylol compound formed from formaldehyde and the reaction product of 1 mol of 1, 3 imidazolidone with 2 mols of urea in the presence of glycollic acid, subjected to a strong wringing action and dried under tension at 70 DEG C. and cured at 145 DEG C.; (3) A roughened staple fibre fabric is impregnated with a solution containing a condensate of 1,6 mols of formaldehyde with 1 mol of urea and a compound of the formula HOCH2 NHCONH C2H4 NHCONHC2 H4 NHCONHCH2OH and ammonium chloride as an acid yielding catalyst, squeezed, dried at 70 DEG C. under tension and heated at 140 DEG -145 DEG C.; (4) A smooth staple fibre fabric is impregnated with a solution containing a 1,6 : 1 methylol urea and the compound HOCH2 NHCONHC2 H4 NHCONHC2H4NHCONHCH2OH and ammonium sulphate, wrung out, dried and heated at 140 DEG C.