# US 2014/0197978 A1 · Methods and compositions for energy dissipation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197978 A1 - Document ID: US20140197978A1 - Status: Published application - Kind: A1 - Application number: 13/739,559 - Filed: 2013-01-11 - Published: 2014-07-17 - Earliest claimed: 2013-01-11 - Assignees: Sabic Innovative Plastics IP B.V. - Applicants: Sabic Innovative Plastics IP B.V. - Inventors: Davide Louis Simone; Gary Stephen Balch; David Alexander Gibson, III; Harold Jay Patchen; Allen Lawrence Garner; Gregory John Parker - Web page: https://patentgrep.com/patent/US20140197978A1 ## CPC - H01Q 15/14: Reflecting surfaces; Equivalent structures {(electromagnetic shields H01Q1/526)} - C08K 3/04: Carbon - C08K 3/042: {Graphene or derivatives, e.g. graphene oxides} - H01Q 17/002: {using short elongated elements as dissipative material, e.g. metallic threads or flake-like particles} - C08K 2201/011: Nanostructured additives - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract A composition for energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the composition can comprise a dielectric and graphene mixed with at least a portion of the dielectric, wherein the percentage volume of the graphene relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz. ## Claims ### Claim 1 A composition for energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the composition comprising: a dielectric; and graphene mixed with at least a portion of the dielectric, wherein the percentage volume of the graphene relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz. ### Claim 2 (depends on 1) The composition of claim 1, wherein the dielectric comprises a thermoplastic polymer. ### Claim 3 (depends on 1) The composition of claim 1, wherein the percentage volume of the quantity of graphene relative to the total volume of the composition is from about 5% to about 20%. ### Claim 4 (depends on 1) The composition of claim 1, wherein the percentage volume of the quantity of graphene relative to the total volume of the composition is from about 10% to about 20%. ### Claim 5 (depends on 1) The composition of claim 1, wherein the percentage volume of the quantity of graphene relative to the total volume of the composition is from about 15% to about 20%. ### Claim 6 (depends on 1) The composition of claim 1, wherein a thickness of the composition is configured to minimize transmission of the incident electromagnetic radiation. ### Claim 7 (depends on 1) A method of increasing energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the method comprising: providing the composition of claim 1; and receiving incident electromagnetic radiation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, wherein a reflective wave of electromagnetic radiation is generated in response to receiving the incident electromagnetic radiation, and wherein the reflective wave facilitates destructive interference of incoming electromagnetic radiation. ### Claim 8 A composition for energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the composition comprising: a dielectric; and a conductive, non-magnetic filler mixed with at least a portion of the dielectric, wherein the percentage volume of the conductive, non-magnetic filler relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz. ### Claim 9 (depends on 8) The composition of claim 8, wherein percentage volume of the conductive filler relative to the total volume of the composition is configured such that the electrical percolation of the material is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz. ### Claim 10 (depends on 8) The composition of claim 8, wherein the dielectric comprises a thermoplastic polymer. ### Claim 11 (depends on 8) The composition of claim 8, wherein the conductive filler comprises a lossy filler. ### Claim 12 (depends on 8) The composition of claim 8, wherein the conductive filler comprises graphene. ### Claim 13 (depends on 8) The composition of claim 8, wherein the percentage volume of the conductive filler relative to the total volume of the composition is from about 5% to about 20%. ### Claim 14 (depends on 8) The composition of claim 8, wherein the percentage volume of the conductive filler relative to the total volume of the composition is from about 10% to about 20%. ### Claim 15 (depends on 8) The composition of claim 8, wherein the percentage volume of the conductive filler relative to the total volume of the composition is from about 15% to about 20%. ### Claim 16 (depends on 8) The composition of claim 8, wherein a thickness of the composition is configured to minimize transmission of incident electromagnetic radiation. ### Claim 17 (depends on 8) A method of increasing energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the method comprising: providing the composition of claim 8; and receiving incident electromagnetic radiation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, wherein a reflective wave of electromagnetic radiation is generated in response to receiving the incident electromagnetic radiation, and wherein the reflective wave facilitates destructive interference of incoming electromagnetic radiation. ### Claim 18 A composition for energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the composition comprising: a dielectric; and a conductive filler having variable permittivity and substantially static permeability, wherein the conductive filler is mixed with at least a portion of the dielectric, wherein the percentage volume of the conductive filler relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz, and wherein, below full electrical percolation, the reflectivity of the composition is minimized. ### Claim 19 (depends on 18) The composition of claim 18, wherein the dielectric comprises a thermoplastic polymer. ### Claim 20 (depends on 18) The composition of claim 18, wherein the conductive filler comprises a lossy filler. ### Claim 21 (depends on 18) The composition of claim 18, wherein the conductive filler comprises graphene. ### Claim 22 (depends on 18) The composition of claim 18, wherein the percentage volume of the conductive filler relative to the total volume of the composition is from about 5% to about 20%. ### Claim 23 (depends on 18) The composition of claim 18, wherein the percentage volume of the conductive filler relative to the total volume of the composition is from about 10% to about 20%. ### Claim 24 (depends on 18) The composition of claim 18, wherein the percentage volume of the conductive filler relative to the total volume of the composition is from about 15% to about 20%. ### Claim 25 (depends on 18) The composition of claim 18, wherein a thickness of the composition is configured to minimize transmission of incident electromagnetic radiation. ### Claim 26 (depends on 18) A method of increasing energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the method comprising: providing the composition of claim 18; and receiving incident electromagnetic radiation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, wherein a reflective wave of electromagnetic radiation is generated in response to receiving the incident electromagnetic radiation, and wherein the reflective wave facilitates destructive interference of incoming electromagnetic radiation.