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AssigneeEurecat S.A.
InventorsPierre Dufresne, Pauline Galliou, Mathieu Baffert, Fabien Laboulfie
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A process is disclosed for limiting the emissions of gases from a porous material in the form of particles comprising a porous inorganic support and at least 0.1% by weight of one or more compounds chosen from organic compounds, halogen compounds, boron compounds and phosphorus compounds. The particles are placed in motion within a hot gas stream traversing them, and a liquid composition containing one or more film-forming polymer(s) is sprayed over the moving particles by means of a twin-fluid atomization nozzle, in which the liquid composition is mixed with a pressurized gas, with a relative atomization pressure of greater than or equal to 0.7×1005 Pa, until a protective layer containing the film-forming polymer(s) and exhibiting a mean thickness of less than or equal to 20 μm is obtained on the surface of the said particles. A material resulting from this process is also disclosed.
A process for limiting the emissions of gases from a porous material in the form of particles comprising a porous inorganic support and at least 0.1% by weight of one or more compounds chosen from organic compounds, halogen compounds, boron compounds and phosphorus compounds, the process comprising:
A porous material in the form of particles which are covered with a protective layer comprising one or more film-forming polymer(s), the film-forming polymer(s) representing from 0.1 to 4% by weight, with respect to the total weight of the particles, and being chosen from a group consisting of:
Dependencies are inferred from the claim text.