Most materials used for stopping and filling are absorbent and if applied late in the system e. g. immediately beneath finishingcoats may cause sinkage and variations in gloss sheen or colour.
RU 2251 is applied as top for patent finishing. It can be also suitable for the finishing of intermediary coats of scratch resistant, aniline leathers and high shine ones.
RU 2251用于漆革的顶层涂饰，也可用于需耐刮擦的革、苯胺革和高光亮型革的中间层涂饰。
3
Finally the technologies of water - based and solvent-free top coats, and roller-coating can reduce the pollution in finishing process.