A novel substance, viz., the salt of .beta.-diethylaminoethyl p-aminobenzoate with celluloseglycolic acid has the following general formula: ##STR1## WHERE X STANDS FOR THE DEGREE OF SUBSTITUTION RANGING FROM 75 TO 100n stands for the degree of polymerization ranging from 30 to 120.A
The high-molecular weight derivative of the 2-dimethylaminoethyl ester of p-butylaminobenzoic acid having the formula ##EQU1## where x is the degree of substitution from 0.6 to 1.5 and n is the degree of polymerization from 30 to 120.
A salt of .beta.-diethylaminoethyl ester of p-aminobenzoic acid with the acetal of polyvinyl alcohol and glyoxalic acid which has the formula: ##EQU1## wherein n is a degree of polymerization within the range of from 100 to 1,200; x is a degree of substitution within the range of fro
