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COMPOUNDS FOR REDUCING BACKGROUND COLOR IN COLOR CHANGE COMPOSITIONS

  • US 20140275381A1
  • Filed: 03/14/2014
  • Published: 09/18/2014
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A color change composition comprising:

  • a composition comprising a color former and a color developer that transitions from a first color state to a second color state upon application of an applied stimulus; and

    an amount of a copolymer sufficient to eliminate background color of the composition during transition from a first color state to a second color state.

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