Methods of making sustained release biocidal compositions

Details Methods of making sustained release biocidal compositions Methods of making sustained release biocidal compositions

A - Human Necessities

01

N

A01N 59/00 (2006.01) A01N 25/34 (2006.01) A23B 9/14 (2006.01) A23B 9/30 (2006.01) A23L 3/3409 (2006.01) A23L 3/358 (2006.01) B65D 81/28 (2006.01) C01B 11/02 (2006.01)

Patent

CA 2196782

A process for preparing a composite which provides sustained release of chlorine dioxide which includes mixing a hydrophilic material containing an amine and a base with a hydrophobic material containing an acid releasing agent, the hydrophilic and hydrophobic materials being adjacent and substantially free of water, to form a mixture. The mixture is exposed to chlorine dioxide which reacts with the amine to form iminium chlorite which is decomposed by the base to form a chlorite salt within the hydrophilic material. The hydrophilic material is capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent.

L'invention concerne un procédé de préparation d'un composite permettant la libération prolongée de dioxyde de chlore, et qui consiste à mélanger une matière hydrophile contenant une amine et une base avec une matière hydrophobe contenant un agent libérant de l'acide, les matières hydrophile et hydrophobe étant adjacentes et sensiblement exemptes d'eau, de sorte qu'un mélange soit formé. Le mélange est ensuite exposé à du dioxyde de chlore qui réagit avec l'amine pour former du chlorite d'iminium qui est ensuite décomposé par la base de sorte qu'un sel de chlorite soit formé à l'intérieur de la matière hydrophile. La matière hydrophile est capable de libérer du dioxyde de chlore lors de l'hydrolyse de l'agent libérant de l'acide.

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