Patent ID: 11970598
Assignee: ABB SCHWEIZ AG
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 11:
12. An intumescent polymer comprising:
a polymer matrix;
an expandable graphite mixed within the polymer matrix;
wherein the expandable graphite is covalently bonded to a silane, and
wherein the polymer matrix comprises between 20% and 70% of the intumescent polymer by mass and the expanded graphite with the silane comprises between 10% and 40% of the intumescent polymer by mass,
wherein the polymer matrix comprises polyethylene, high-density polyethylene, polypropylene, polycarbonate, polyester, polyvinyl acetate, polyvinyl chloride, polyethers, polystyrene, poly(methyl methacrylate), polyamide, poly(ethylene terephthalate), poly(butylene terephthalate) or a copolymer thereof.