Patent GB-962560-A (GB)
Title: Improvements relating to the dyeing and printing of textiles
Inventor: HOFER KURT
IPC: D06P5/13
Filed: 1960-10-18
Abstract: Esters of the formula Ar-(OA)n-OCOR, in which Ar is an aromatic radical, which may be halogenated, A is an alkylene radical of 2-4 carbon atoms, n is 1-5 and RCO is an acyl (including formyl) radical, are prepared from compounds of the formula Ar-(OA)n-OH and carboxylic acids or functional derivatives thereof. Particulars are given of the preparation of esters from (1) o-chlorophenoxyethanol and acetic acid, (2) dichloro-o-cresoxyethanol and acetic acid, (3) butyleneglycol monoxylenyl ether and acetic anhydride, (4) p-chlorophenoxyethanol and formic, acetic and propionic acids, (5) phenoxyethanol, o-cresoxyethanol or xylenyloxyethanol and acetic anhydride, (6) 2, 4-dichlorophenoxyethanol and acetic anhydride or propionic acid, (7) p-chlorophenoxypropanol and propionic acid, (8) 2, 4, 5-trichlorophenoxyethanol or 2, 4, 5-trichlorophenoxyethoxyethanol and propionic acid and (9) o-cresoxyethanol and monochloracetic acid.  Other esters similarly obtainable are p-chlorophenoxyethyl butyrate and isopentoate, p-chlorophenoxybutyl acetate, 2, 4-dichlorophenoxyethyl formate or n-butyloxy acetate or n-butyloxyethoxy acetate, 2, 4-dichlorophenoxyethyl 2-ethylhexoate, 2, 4-dichlorophenoxypropyl formate, acetate and propionate, 2, 4-dichlorophenoxybutyl acetate, p-chlorophenoxyethoxyethyl acetate, p-chlorophenoxyethoxyethoxyethyl acetate, trichloro-o- and m-cresoxy ethyl acetates, bromophenoxyethyl acetate, dibromocresoxyethyl acetate, m- and p-cresoxyethyl acetate, o-phenylphenoxyethoxyethyl acetate, p-tert.-butylphenoxy ethyl acetate, o-chlorophenoxypropyl phenoxyacetate, o-cyclohexylphenoxyethyl propionate, b -naphthoxyethyl acetate, m-methoxyphenoxyethyl acetate and 2, 4-dichlorophenoxytetraethoxyethyl acetate.  Specifications 764,439 and 807,696 are referred to.ALSO:As assistants in the dyeing or printing of textile materials with disperse dyestuffs, use is made of esters of the formula Ar-(OA)n -O.CO.R, in which Ar is an aromatic radical, A is an alkylene radical of 2-4 carbon atoms, n is 1-5 and RCO is an acyl (including formyl) radical.  Typical esters are o-chlorophenoxyethyl acetate, p-chlorophenoxyethyl formate, o-cresoxyethyl acetate, 2, 4-dichlorophenoxyethyl propionate, o-cresoxyethyl chloracetatic, o-cyclohexylphenoxyethyl propionate, o-phenylphenoxyethoxyethyl acetate, 2, 4-dichlorophenoxy-tetraethoxy-ethyl acetate and b -naphthoxyethyl acetate.  Others are specified also.  The esters are preferably emulsified in the dyebaths, which may contain emulsifiers.  For this purpose, ether carboxylic acid salts are particularly suitable, e.g. the sodium salts of 2, 4-dioctyl-(or 2, 4-diamyl)- polyethenoxyacetic acids or of tridecyl-polyethenoxy-acetic acids containing 5-60 carbon-atoms in the polyethenoxy groups.  Examples are given in which polyesters, polyamides and cellulose triacetate are dyed or printed as described above.  An example is given also in which the depth of the dyeing on a polyester is reduced by treatment with an aqueous emulsion of an ester as defined above.  Reference is made also to the dyeing of polyvinyl chloride and (or) polyvinylidene chloride fibres and mixed fabrics of polyesters and wool.  Specifications 764,439 and 807,696 are referred to.