Controlled-release ait preparation, process for producing...

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A01N 47/48 (2006.01) A01N 25/34 (2006.01) A01N 47/46 (2006.01) B65D 81/24 (2006.01)

Patent

CA 2157031

A controlled-release AIT (allyl isothiocyanate) preparation comprising AIT and shellac serving as a barrier against AIT release; the above preparation comprising a shellac containing AIT incorporated therein (an AIT-incorporating shellac); the above preparation wherein the AIT-incorporating shellac is in the form of plate, block or granule; the above preparation wherein the AIT- incorporating shellac has been adhered onto or mixed into a base material; the above preparation wherein the base material is one selected from among plastic plate, paper, non-woven fabric and woven fabric; and the above preparation wherein the AIT of the AIT-incorporating shellac is supported on a carrier. The AIT vapor release rate can be varied by appropriately selecting the chemical composition, preparation process and so forth of the AIT- incorporating shellac. Sustained release of AIT vapor for long is also possible. As the AIT-incorporating shellac can be easily worked into various forms, the AIT preparation can be provided in various forms. It is useful in various fields of food, packaging material, construction material and so forth as a functional material which is highly stable and has antimicrobial, antimold, freshness-retaining and insectproof properties.

Préparation d'isothiocyanate d'allyle à libération contrôlée comprenant de l'isothiocyanate d'allyle et de la gomme-laque servant de barrière contre la libération d'isothiocyanate d'allyle. Ladite préparation contient une gomme-laque renfermant de l'isothiocyanate d'allyle, cette gomme-laque se présentant sous forme de plaque, de bloc ou de granulés. La gomme-laque a été collée sur un matériau de base ou bien incorporée par mélange dans celui-ci. Ce matériau de base est choisi parmi une feuille plastique, du papier, du tissu non tissé et du textile tissé. L'isothiocyanate d'allyle incorporé dans la gomme-laque est supporté sur un support. Il est possible de faire varier la vitesse de libération des vapeurs d'isothiocyanate d'allyle par un choix approprié de la composition chimique, du procédé de préparation, etc., de la gomme-laque. La libération à effet prolongé des vapeurs d'isothiocyanate d'allyle est également possible. La gomme-laque pouvant être aisément façonnée pour prendre diverses formes, la préparation d'isothiocyanate d'allyle peut se présenter sous diverses formes. Elle est utile dans divers domaines de l'industrie alimentaire, des matériaux de conditionnement, des matériaux de construction, etc., comme matériau fonctionnel extrêmement stable présentant des propriétés anti-microbiennes, anti-moisissures, de conservation de fraîcheur et de résistance aux insectes.

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