发明授权
US4459130A Solid preparation of water-soluble acid dye and polymer particles with quaternary ammonium or phosphonium groups 失效
固体制备水溶性酸性染料和具有季铵或鏻基团的聚合物颗粒

Solid preparation of water-soluble acid dye and polymer particles with
quaternary ammonium or phosphonium groups
摘要:
A dye preparation consists of a water-soluble acid dye and a water-insoluble basic carrier. The carrier consists of crosslinked polymer particles of average particle diameter of less than 1 .mu.m and contains at least 2 mVal/g of quaternary ammonium or phosphonium groups. The dye reacts with the carrier in an ion exchange reaction and forms a dye polymer latex which can easily isolated in solid form, stored indefinitely and redispersed in water whenever required. It forms a so-called self-dispersing dye preparation. The dye preparation is useful for making dyed layers such as in photographic recording materials.
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