The present invention is directed to a color masterbatch for producing colored plastic articles, wherein the color masterbatch comprises:
- at least one carrier,
- at least one coloring agent, and
- at least one water-soluble and/or water-swellable component;
wherein the at least one carrier is an organic polymer having a molecular weight Mw ≥ 1000 g/mol and wherein the organic polymer is insoluble in water,
wherein an amount of the water-soluble and/or water-swellable component in the color masterbatch is ≥ 1 wt% to ≤ 50 wt%, preferably ≥ 2 wt% to ≤ 25 wt%, more preferably ≥ 4 wt% to ≤ 20 wt%, even more preferably ≥ 5 wt% to ≤ 15 wt%, based on the total weight of the color masterbatch,
wherein the coloring agent is an alkali clearable dye, and
wherein a weight ratio of the coloring agent to the water-soluble and/or water-swellable component in the color masterbatch is 1:2 to 1:200, preferably 1:5 to 1:50.
本发明涉及一种用于生产彩色塑料制品的色母粒,其中色母粒包括
- 至少一种载体
- 至少一种
着色剂,以及
- 至少一种
水溶性和/或
水溶性成分;
其中至少一种载体是分子量 Mw ≥ 1000 g/mol 的有机聚合物,且该有机聚合物不溶于
水、
其中
水溶性和/或
水溶性组分在色母粒中的量≥1 wt%至≤50 wt%,优选≥2 wt%至≤25 wt%,更优选≥4 wt%至≤20 wt%,更优选≥5 wt%至≤15 wt%,以色母粒总重量为基准、
其中
着色剂为碱性可清除
染料,以及
其中
着色剂与色母粒中
水溶性和/或
水溶性组分的重量比为 1:2 至 1:200,优选 1:5 至 1:50。