This invention relates to unsubstituted and polymeric leuco colorants for use as consumer product additives to indicate a product function by color change, to make attractive or distinctive visual effects, or to provide latent or delayed color generation. The colorants may be present in a stable, colorless state and may be transformed to an intense colored state upon exposure to certain physical or chemical changes. Alternatively, the colorants may be transformed from one color to another color upon exposure to certain physical or chemical changes. The colored form of the unsubstituted or polymeric leuco colorant may be transient, since the colorant can revert back to its colorless form or its original color after the physical or chemical activation has been removed or changed. Polymeric leuco colorants are typically comprised of at least two components: at least one leuco chromophore component and at least one polymeric component.
这项发明涉及未取代和聚合的变色剂,用作消费产品添加剂,通过颜色变化指示产品功能,制造吸引人或独特的视觉效果,或提供潜在或延迟的颜色生成。这些色素可能以稳定的、无色状态存在,并在暴露于某些物理或
化学变化后转变为强烈的有色状态。或者,这些色素可能在暴露于某些物理或
化学变化后从一种颜色转变为另一种颜色。未取代或聚合的变色剂的有色形式可能是短暂的,因为在物理或
化学激活被移除或改变后,这种色素可以恢复到无色形式或其原始颜色。聚合的变色剂通常由至少两个组分组成:至少一个变色团组分和至少一个聚合物组分。