Electrostatic ink compositions and scratch-off structures

  • US 11,112,717 B2
  • Filed: 09/10/2019
  • Issued: 09/07/2021
  • Est. Priority Date: 09/30/2016
  • Status: Active Grant
First Claim
Patent Images

1. An electrostatic ink composition comprising a a fatty acid ester having a plurality of hydroxyl substituents constituting from 10 wt % to 30 wt % solids of the electrostatic ink composition.

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