Benzophenone ether esters, processes for their preparation, and their use for improving the light stability of polyester dyeings

A process for dyeing using dispersed dyes comprising using a compound of the general formula I ##STR10## in which R.sup.1 and R.sup.4, independently of one another, are (C.sub.1 -C.sub.6)-alkyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or hydrogen;

• R.sup.2 and R.sup.3, independently of one another, are (C.sub.1 -C.sub.6)-alkyl or hydrogen;
• x and y, independently of one another, are 0, 1 or 2 and
• R.sup.5 represents (C.sub.1 -C.sub.12)-alkyl;
• (C.sub.3 -C.sub.8)-cycloalkyl;
• (C.sub.1 -C.sub.12)-alkyl or (C.sub.3 -C.sub.8)-cycloalkyl, each of which is substituted by (C.sub.1 -C.sub.6)-alkoxy, (C.sub.2 -C.sub.7)-alkoxycarbonyl, amino, (C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, hydroxyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or nitro;
• phenyl or phenyl substituted by (C.sub.1 -C.sub.6)-alkyl, (C.sub.1 -C.sub.6)-alkoxy, (C.sub.2 -C.sub.7)-alkoxycarbonyl, amino, (C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, hydroxyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or nitro for improving the light fastness of polyester dyeings.

A process for dyeing using dispersed dyes comprising using a compound of the general formula I ##STR11## in which R.sup.1 and R.sup.4, independently of one another, are (C.sub.1 -C.sub.6)-alkyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or hydrogen;

• R.sup.2 and R.sup.3, independently of one another, are (C.sub.1 -C.sub.6)-alkyl or hydrogen;
• x and y, independently of one another, are 0, 1 or 2 and
• R.sup.5 represents (C.sub.1 -C.sub.12 )-alkyl;
• (C.sub.3 -C.sub.8)-cycloalkyl;
• (C.sub.1 -C.sub.12)-alkyl or (C.sub.3 -C.sub.8)-cycloalkyl, each of which is substituted by (C.sub.1 -C.sub.6)-alkoxy, (C.sub.2 -C.sub.7)-alkoxycarbonyl, amino, (C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, hydroxyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or nitro;
• phenyl or phenyl substituted by (C.sub.1 14 C.sub.6)-alkyl, (C.sub.1 -C.sub.6)-alkoxy, (C.sub.2 -C.sub.7)-alkoxycarbonyl, amino, (C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, hydroxyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or nitro, or a group of the general formula A ##STR12## in which R.sup.6 is hydrogen, phenyl, (C.sub.1 -C.sub.12)-alkyl or cyano and
• R.sup.7 and R.sup.8, independently of one another, are hydrogen, (C.sub.1 -C.sub.8)-alkyl, phenyl or phenyl substituted by (C.sub.1 -C.sub.4)-alkyl or (C.sub.1 -C.sub.4)-alkoxy or together form an alkylene radical having 4 to 5 carbon atoms, for improving the light fastness of polyester dyeings.

Dispersed dye preparations characterized in that it contains at least one compound of the general formula I ##STR13## in which R.sup.1 and R.sup.4, independently of one another, are (C.sub.1 -C.sub.6)-alkyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or hydrogen;

• R.sup.2 and R.sup.3, independently of one another, are (C.sub.1 -C.sub.6)-alkyl or hydrogen;
• x and y, independently of one another, are 0, 1 or 2 and
• R.sup.5 represents (C.sub.1 -C.sub.12)-alkyl;
• (C.sub.3 -C.sub.8)-cycloalkyl;
• (C.sub.1 -C.sub.12)-alkyl or (C.sub.3 -C.sub.8)-cycloalkyl, each of which is substituted by (C.sub.1 -C.sub.6)-alkoxy, (C.sub.2 -C.sub.7)-alkoxycarbonyl, amino, (C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, hydroxyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or nitro;
• phenyl or phenyl substituted by (C.sub.1 -C.sub.6)-alkyl, (C.sub.1 -C.sub.6)-alkoxy, (C.sub.2 -C.sub.7)-alkoxycarbonyl, amino, (C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, hydroxyl, cyano, fluorine, chlorine, bromine, trifluoromethyl or nitro, or a group of the general formula A ##STR14## in which R.sup.6 is hydrogen, phenyl, (C.sub. -C.sub.12)-alkyl or cyano and
• R.sup.7 and R.sup.8, independently of one another, are hydrogen, (C.sub.1 -C.sub.8)-alkyl, phenyl or phenyl substituted by (C.sub.1 -C.sub.4)-alkyl or (C.sub.1 -C.sub.4)-alkoxy or together form an alkylene radical having 4 or 5 carbon atoms.