Nucleophilic bodies bonded to siloxane and use thereof for...

Details Nucleophilic bodies bonded to siloxane and use thereof for... Nucleophilic bodies bonded to siloxane and use thereof for...

C - Chemistry, Metallurgy

08

L

C08L 83/06 (2006.01) B01D 15/08 (2006.01)

Patent

CA 2365098

A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C-Si. C-O-Si. Si-O-Si or Si-O-Al bonds. and to the substrate by reaction with the surface silanol or other nucleophilic groups. Chromatographic methods using a column comprising the novel composition are also disclosed.

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