7 0 into 567 g warm water of 50 60 u00b0 c are added under stirring within 60 minutes 73 4 g acid violet 17 95 material agitation is continued for further 30 minutes at 60 u00b0 c while a solution forms the dyestuff solution is then clarified by the use of a filtering aid afterwards 2 8 g of a polyvinyl alcohol are added having a degree of hydrolysis of 69 5 72 5 and a brookfield viscosity of 5 5 8 mpa u00b7 s the mixture is heated up to 80 u00b0 c stirred for another 60 minutes at this temperature and diluted with deionised water to receive 711 5 g solution after cooling to room temperature the solution remains stable and the ph is in the range of 6 5 7 5 a dyestuff solution is obtained following the same procedure as in example 16 with the sole differences that 14 2 g of a polyvinyl alcohol are used having a degree of hydrolysis of 69 5 72 5 and a brookfield viscosity of 5 5 8 mpa u00b7 s the ph of the solution is in the range of 6 5 7 0 a dyestuff solution is obtained following the same procedure as in example 16 with the sole differences that 2 8 g of a polyvinyl alcohol are used having a degree of hydrolysis of approx 88 and a brookfield viscosity of 7 0 9 0 mpa u00b7 s the ph of the solution is in the range of 6 5 7 5 a dyestuff solution is obtained following the same procedure as in example 16 with the sole differences that 3 6 g of a polyacrylamide are used the clear 0.