SOLFIX FD is a dye auxiliary agent which is mainly used to fix anionic dyes, improving fixation and washing-fastness of coloured leather.
Added in the intermediate phase, during the so called “sandwich” dyeing, SOLFIX FD improves significantly the dye strength and the aniline fixation.
SOLFIX FD is used with very good results for the production of “sauvage” articles, aniline leather stained in drum, and for the realisation of all kind of articles where superficial dyeing is required to obtain bicolour effects both for full grain leather and suede.
SOLFIX FD has a good compatibility with cationic, non ionic, amphoteric products, but not with anionic products.
The recommended percentages vary from 0.5 to 4% according to the wished effect.