Xuedong Song,Kaiyuan Yang,Stephanie M. Martin,Maia Bageant
申请号：
US12503398
公开号：
US08273306B2
申请日:
2009.07.15
申请国别(地区):
US
年份:
2012
代理人:
摘要：
The present invention relates to a color-changing material and to a multiple-component material that includes a color-changing composition. The color-changing materials and color-changing compositions are capable of changing color in order to indicate a change in condition, such as a change in pH. The color-changing materials and color-changing compositions include a hydrogel-forming composition, a charged colorant and a pH adjuster. The hydrogel-forming composition includes at least one charged species.
