Patent ID: 11912898
Assignee: CABOT CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H | IPC C

Claim 10:
11. A method of producing a coating composition, comprising:
providing a millbase comprising at least one CNS-derived material dispersed in a solvent and selected from the group consisting of: carbon nanostructures, fragments of carbon nanostructures, fractured carbon nanotubes, and any combination thereof,
wherein the carbon nanostructures or fragments of carbon nanostructures include a plurality of multiwall carbon nanotubes that are crosslinked in a polymeric structure by being branched, interdigitated, entangled and/or sharing common walls,
wherein the fractured carbon nanotubes are derived from the carbon nanostructures and are branched and share common walls with one another,
combining the CNS millbase with a resin to form a coating composition which, when it is tested according to Evaluation Method A, the resulting cured coating has a surface resistivity of at most 107 ohm/square, and either
A) when the coating composition is tested according to Evaluation Method A, the resulting cured coating has a value of L* of at least 30, or
B) when the coating composition is tested according to Evaluation Method B, the resulting cured coating exhibits transparency greater than 55% and resistivity (ohm/sq) satisfying log10(surface resistivity)<0.005(transparency)2−0.52(transparency)+19, where transparency is given as a percent.