Silica gel incorporating polyazacycloalkane structural units

C - Chemistry – Metallurgy – 07 – F

Patent

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Details

C07F 7/18 (2006.01) B01D 53/00 (2006.01) B01D 53/02 (2006.01) B01D 53/04 (2006.01) C01B 13/02 (2006.01) C01B 15/013 (2006.01) C01B 21/04 (2006.01) C07F 7/08 (2006.01) C08G 77/04 (2006.01)

Patent

CA 2318928

The invention concerns a compound of formula (I) in which: W1, W2 and W3 represent each a divalent radical selected among those represented by the general formula (A): -[CT1T2)n-[N(R4)]p-(CT3T4)m]1-, as defined in the description; R4 represents a hydrogen atom, an alkyl radical, a [(hetero)aryl]alkyl or a radical of the formula (B): R5-Si(X1)(X2)(X3) as defined in the description; R1 and R2, and R3 represent each a hydrogen atom, an alkyl radical, or a [(hetero)aryl]alkyl radical or a radical represented by the formula (B) provided that the polyazacycloalkane ring of the compound of formula (I) comprises not more than 30 cyclic carbon atoms and not more than 6 cyclic nitrogen atoms and at least one of these cyclic nitrogen atoms is substituted by a radical of formula (B). The invention also concerns the preparation method and the use of said compound for the synthesis of polysiloxane gels; the use of said gels for purifying oxygen or extract oxygen from air.

Composé de formule (I), dans laquelle W¿1?, W¿2? et W¿3? représentent chacun un radical divalent choisi parmi ceux représentés par la formule générale (A): -[(CT¿1?T¿2?)¿n?-[N(R¿4?)]¿p?-(CT¿3?T¿4?)¿m?]¿1?-, telle que définie dans la description. R¿4? représente un atome d'hydrogène, un radical alkyle, un radical [(hétéro)aryl]alkyle ou un radical de formule (B): R¿5?-Si(X¿1?)(X¿2?)(X¿3?) tel que défini dans la description, R¿1? et R¿2?, et R¿3? représentent chacun un atome d'hydrogène, un radical alkyle, ou un radical [(hétéro)aryl]alkyle ou un radical représenté par la formule (B) étant entendu que le noyau polyazacycloalcane du composé de formule (I) comporte au plus 30 atomes de carbone cycliques et au plus 6 atomes d'azote cycliques et qu'au moins un de ces azotes cycliques est substitué par un radical de formule (B). Procédé de préparation; utilisation pour la synthèse de gels de polysiloxanes; utilisation desdits gels pour purifier l'oxygène ou extraire l'oxygène de l'air.

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