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US 2024/0181433 A1Published application
Ptfe and active particle compositions
AssigneeDonaldson Company, Inc.
InventorsShane Lawson, Davis B. Moravec, Yehya A. Elsayed, Anil Suthar
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Abstract
Compositions including a matrix, methods of making such compositions, structures including such compositions, methods of disposing such compositions on a substrate; wherein the matrix includes: a plurality of polytetrafluroethylene fibrils formed from PTFE resin and a plurality of active particles.
Claims20
A composition comprising:
- a matrix comprising:
- a plurality of polytetrafluoroethylene (PTFE) fibrils comprising:
- short-strand PTFE fibrils;
- and
- long-strand PTFE fibrils;
- and
- a plurality of active particles.
4 more elements
A method of making a composition, the composition comprising:
- a matrix, the matrix comprising:
- a plurality of PTFE fibrils formed from PTFE resin;
- and a plurality of active particles;
- the method comprising:
- aerating an emulsion to form an aerated emulsion, the emulsion and the aerated emulsion comprising:
- the PTFE resin;
- a dispersant;
- and
- a surfactant;
- adding a solid particulate composition to the aerated emulsion to form a matrix pre-mixture, the solid particulate composition comprising a solid particulate, the matrix pre-mixture comprising:
- the PTFE resin;
- the dispersant;
- the solid particulate composition;
- and
- the surfactant;
- aerating the matrix pre-mixture to form an aerated matrix pre-mixture, the aerated matrix pre-mixture comprising:
- the PTFE resin;
- the solid particulate composition;
- the dispersant;
- and the surfactant;
- mixing the aerated matrix pre-mixture to form a hydrated solid, the hydrated solid comprising:
- the plurality of PTFE fibrils;
- the plurality of active particles, the plurality of active particles comprising at least a portion of the solid particulate;
- at least a portion of the dispersant;
- and
- at least a portion of the surfactant;
- and
- drying the hydrated solid to form the matrix.
25 more elements
A method of making a composition, the composition comprising:
- a matrix, the matrix comprising:
- a plurality of PTFE fibrils formed from PTFE resin;
- and
- a plurality of active particles;
- the method comprising:
- precipitating at least a portion of the particles of the PTFE resin from an (aerated) matrix pre-mixture through the addition of a solid particulate composition to the (aerated) matrix pre-mixture to form a hydrated solid;
- the solid particulate composition comprising a solid particulate;
- the (aerated) matrix pre-mixture comprising:
- the PTFE resin;
- a dispersant;
- and
- a surfactant;
- the hydrated solid comprising:
- the plurality of active particles, the plurality of active particles comprising at least a portion of the solid particulate;
- at least a portion of the dispersant;
- and
- at least a portion of the surfactant;
- and
- drying the hydrated solid to form the matrix.
16 more elements
Dependencies are inferred from the claim text.