Process for producing discharge reserve prints on textile materials

In the process for production of discharge reserve prints on textile material comprised of water-repellent fibers or water repellent fibers mixed with cellulose fibers, wherein a disperse dyestuff which is dischargeable to white is applied in the form of a dye liquor or printing paste to the incipiently dried, and a discharge reserve printing paste is printed on the material in the desired pattern, and the thus treated material is subsequently subjected to a heat treatment at temperatures of 100.degree. to 230.degree. C. and wherein said disperse dyestuff which is dischargeable to white is a dyestuff of the formula ##STR18## wherein R is unsubstituted or substituted alkyl having 1 to 4 carbon atoms which when substituted is substituted by hydroxyl, chloro, bromo, methoxy, methoxyethoxy or ethoxyethoxy or R is phenyl or phenyl substituted by at least one of nitro, chlorine, bromine and methyl;

• R.sup.1 is alkyl having 1 to 4 carbon atoms which is unsubstituted or substituted by hydroxyl, chloro, bromo, cyano, phenyl, phenoxy, alkylaminocarbonyloxy having 1 to 4 carbon atoms in the alkyl moiety or phenylaminocarbonyloxy, or R.sup.1 is dihydroxyalkyl having 3 or 4 carbon atoms, chlorohydroxyalkyl having 3 or 4 carbon atoms, or alkyl having 3 to 10 carbon atoms with the carbon chain interrupted by 1 to 3 oxygen atoms and which is unsubstituted or substituted by at least one hydroxyl;
• R.sup.2 is independently a moiety as defined for R.sup.1 or R.sup.2 is hydrogen, cyclopentyl, cyclohexyl, phenyl, or alkenyl having 3 to 5 carbon atoms;
• Y is hydrogen, chloro, bromo, alkyl having 1 to 4 carbon atoms, alkoxy which has 1 to 4 carbon atoms which is unsubstituted or substituted by cyano or hydroxyl, or Y is dihydroxyalkoxy having 3 or 4 carbon atoms, chlorohydroxyalkyl having 3 or 4 carbon atoms, or alkoxy having 3 to 10 carbon atoms with the carbon chain interrupted by 1 to 3 oxygen atoms and which is unsubstituted or substituted by hydroxyl;
• D is a moiety selected from the group consisting of ##STR19## wherein X.sup.1 nitro, cyano, alkylsulphonyl having 1 to 4 carbon atoms, phenylsulphonyl, dialkylphosphono having 1 to 4 carbon atoms in each alkyl moiety or trifluoromethyl;
• X.sup.2 is nitro, cyano, alkylsulphonyl having 1 to 4 carbon atoms, phenylsulphonyl, dialkylphosphono having 1 to 4 carbon atoms in each of alkyl moiety, bromo, chloro or fluoro;
• X.sup.3 is hydrogen, chloro, bromo, fluoro or nitro;
• X.sup.4 is hydrogen, chloro, bromo, fluoro, methyl, ethyl, nitro, cyano, alkylsulphonyl having 1 to 4 carbon atoms, phenylsulphonyl, trifluoromethyl, aminocarbonyl, alkylaminocarbonyl having 1 to 4 carbon atoms in the alkyl moiety and which is unsubstituted or substituted by hydroxyl, alkylaminocarbonyl having 3 to 10 carbon atoms in the alkyl moiety and which is interrupted by up to 3 oxygen atoms, dialkylaminocarbonyl having 1 to 4 carbon atoms in each alkyl moiety which is unsubstituted or substituted by hydroxyl, dialkylaminocarbonyl having 3 to 10 carbon atoms in each alkyl moiety and which are interrupted by up to 3 oxygen atoms, aminosulphonyl, alkylaminosulphonyl having 1 to 4 carbon atoms which is unsubstituted or substituted by hydroxyl, alkylaminosulphonyl having 3 to 10 carbon atoms and with the carbon chain interrupted by up to 3 oxygen atoms, dialkylaminosulphonyl having 1 to 4 carbon atoms in each of the alkyl moieties, dialkylaminosulphonyl having 3 to 10 carbon atoms in each alkyl moiety, with each of which interrupted by up to 3 oxygen atoms, alkylcarbonyl having 1 to 4 carbon atoms in the alkyl moiety, phenylcarbonyl unsubstituted or substituted by at least one of nitro, chloro, bromo, methoxy or methyl, with the proviso that not more than 3 of X.sup.1 to X.sup.4 are nitro or cyano,
• the improvement comprising said discharge reserve printing paste containing, as the discharging agent, a base which produces a pH value of at least 8 in a 5% strength aqueous solution.