C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/28 (2006.01) C08J 9/36 (2006.01)
Patent
CA 2441005
Organic, small pore area materials ("SPMs") are provided comprising open cell foams in unlimited sizes and shapes. These SPMs exhibit minimal shrinkage and cracking. Processes for preparing SPMs are also provided that do not require supercritical extraction. These processes comprise sol-gel polymerization of a hydroxylated aromatic in the presence of at least one suitable electrophilic linking agent and at least one suitable solvent capable of strengthening the sol-gel. Also disclosed are the carbonized derivatives of the organic SPMs.
Cette invention concerne des matières organiques à pores de petites dimensions (SPM) possédant des mousses à alvéoles ouverts sans limitation de dimensions ni de formes. Ces SPM possèdent une capacité minimale de retrait et de craquelure. L'invention concerne également des procédés de préparation desdits SPM, lesquels procédés n'exigent pas de recourir à une extraction supercritique. On procède à une polymérisation sol-gel d'une substance aromatique hydroxylée en présence d'au moins un agent de liaison électrophile approprié et d'au moins un solvant approprié capable de renforcer le sol-gel. L'invention concerne, de plus, les dérivés carbonés de ces SPM organiques.
Albert Donald F.
Andrews Greg R.
Bruno Joseph W.
American Aerogel Corporation
Smart & Biggar
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