Intercalates and exfoliates formed with long chain (c10+)...

C - Chemistry – Metallurgy – 01 – B

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C01B 33/44 (2006.01) C08K 3/34 (2006.01) C08K 9/04 (2006.01) C08K 9/12 (2006.01) C09C 1/42 (2006.01) C09C 3/10 (2006.01)

Patent

CA 2218303

Intercalates formed by contacting a layered material, e.g., a phyllosilicate, with an intercalant monomer including an alkyl radical having at least 10 carbon atoms to sorb or intercalate the intercalant monomer between adjacent platelets of the layered material. Sufficient intercalant monomer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 5 .ANG. (as measured after water removal to a maximum of 5% by weight water), up to about 100 .ANG. and preferably in the range of about 10-45 .ANG., so that the intercalate easily can be exfoliated into individual platelets. The intercalated complex can be combined with an organic liquid into a viscous carrier material, for delivery of the carrier material, or for delivery of an active compound; or the intercalated complex can be combined with a matrix polymer to form a strong, filled polymer matrix.

Intercalés formés par mise en contact d'une matière stratifiée, p. ex. un phyllosilicate, avec un monomère d'intercalation renfermant un radical alkyle avec au moins 10 atomes de carbone pour adsorber ou insérer le monomère d'intercalation entre les plaquettes adjacentes de la matière stratifiée. Suffisamment de monomère d'intercalation est adsorbé entre les plaquettes adjacentes pour augmenter l'espacement de celles-ci jusqu'à au moins 5 (angstroems) environ (mesuré après élimination de l'eau jusqu'à un maximum de 5 % en poids d'eau), et de préférence jusqu'à 100 environ, en privilégiant une plage d'environ 10-45 , de telle façon que l'intercalé puisse être facilement exfolié en plaquettes individuelles. Le complexe intercalé peut être combiné avec un liquide organique en une matière véhicule visqueuse pour acheminer la matière véhicule ou un ingrédient actif; ou encore le complexe intercalé peut être combiné avec un polymère matrice pour former une matrice polymère chargée, résistante.

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