Patent ID: 11859113
Assignee: FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. An electrically conductive adhesive composition, free of metals and metal salts, comprising:
an adhesive polymer component selected from the group consisting of polyethylene-vinyl acetate, polyolefin elastomers, polyvinyl butyral, poly(acrylic acid), polyacrylates and poly(methyl methacrylate) in quantities ranging from 5% to 40% by weight,
an electrically conductive component comprising acetylene or carbon black nanoparticles, carbon nanotubes and flakes or plates of graphene or graphene derivatives in quantities ranging from 60% to 95% by weight, percentages by weight being referred to 100 parts by weight of the adhesive polymer component and electrically conductive component,
wherein said electrically conductive component consists of:
acetylene or carbon black nanoparticles from 15% to 45% by weight,
carbon nanotubes from 5% to 25% by weight, and
flakes or plates of graphene or graphene derivatives from 35% to 70% by weight,
the percentages by weight being referred to 100 parts by weight of said electrically conductive component, and
a solvent compatible with the adhesive polymer component in quantities ranging from 50% to 90% by weight referred to 100 parts of the electrically conductive adhesive composition consisting of the adhesive polymer component, electrically conductive component and solvent.