Method for producing functional polyimide fine particle, and...

G - Physics – 03 – C

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G03C 1/725 (2006.01) C08J 3/14 (2006.01) G11B 7/24 (2006.01)

Patent

CA 2536326

A rewritable optical memory material obtained by combining a polymer carrying a carbonyl group in the main chain or a side chain with a function-imparting component such as a compound which produces rare earth ions is disclosed. The fluorescence intensity of the rewritable optical memory material can be enhanced by light irradiation, while the initial state can be recovered through a heat treatment. Fine particle materials imparted with functions such as fluorescence characteristics, magnetic characteristics, coloration or nonlinear characteristics are also disclosed, and particularly a fine particle material imparted with heat resistance through combination with polyimide is disclosed.

La présente invention concerne un matériau de mémoire optique réinscriptible obtenu par la combinaison d'un polymère portant un groupe carbonyle dans la chaîne principale ou dans une chaîne latérale avec un composant porteur de fonction tel qu'un composé qui produit des ions de terre rare. L'intensité de fluorescence de ce matériau de mémoire optique réinscriptible peut être renforcé par une irradiation lumineuse, tandis que l'état initial peut être récupéré via un traitement thermique. Cette invention concerne aussi des matériaux de particules fines porteurs de fonctions, telle que des caractéristiques de fluorescence, des caractéristiques magnétiques, des caractéristiques de coloration ou des caractéristiques non linéaires et, en particulier un matériau de particules fines doué d'une résistance thermique par une combinaison avec un polyimide.

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