Reversible color-changing ink formulations and nonwoven wipes

摘要

A reversible color-changing polymeric article includes a polymeric material and a dried reversible color-changing ink formulation durably bound to the polymeric material. During use, the polymeric article is impregnated with a sanitizer solution that contains a quaternary ammonium compound. The polymeric article reversibly changes between a first color when impregnated with the sanitizer solution and a second color when the sanitizer solution is depleted during use.

主权项

1. A reversible color-changing polymeric article, comprising:
a polymeric material selected from the group consisting of polyester, polypropylene, high density polyethylene, linear low density polyethylene, polyamides, polytetrafluoroethylene, and combinations thereof; and a dried reversible color-changing ink formulation durably bound to the polymeric material and including at least a reversible color-changing dye and a polymer binder that is not an acrylic polymer binder; wherein the dried reversible color-changing ink formulation enables the polymeric article to repeatedly change back and forth between a first color and a second color at a pH between about 5.5 and about 8.0 during repeated cycles of use of the polymeric article with a quaternary ammonium sanitizer solution, without separating the reversible color-changing ink formulation from the polymeric material.