Air freshening compositions, articles comprising same and...

A - Human Necessities – 61 – L

Patent

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Details

A61L 9/01 (2006.01) A61L 9/012 (2006.01) A61L 9/014 (2006.01) A61L 9/04 (2006.01) A61L 9/12 (2006.01) C11D 3/50 (2006.01) C11D 17/04 (2006.01)

Patent

CA 2442751

An air freshening composition including porous carrier particles having a perfume composition entrapped therein, and a second component selected from an inert filer, hygroscopic agent, binder, coating material, moisture providing agent, and mixtures thereof. The composition may further comprise various optional components such as free perfumes, colorants, disintegrants, water swelling agents, porosity modifiers and mixtures thereof. A method for processing the compositions into a solid article includes the steps of entrapping a perfume in the porous carrier particles, heating and incorporating a carrier or binder material. The compositions may be further processed by optionally incorporating a powder inert filler and forming articles from the mixture. The articles may be formed from the compositions through prilling, extrusion, or compaction amongst other techniques. The air freshening articles and compositions will provide a sustained and controlled release of the perfume compositions over a long period of time without the use of a heat to activate the release. Articles of manufacture including the air freshening articles and various packaging are also disclosed.

L'invention concerne une composition désodorisante comprenant des particules de support poreux qui renferme une composition de parfum, et un deuxième composant choisi parmi une charge inerte, un agent hygroscopique, un liant, un matériau de revêtement, un agent humidifiant, et des mélanges de ceux-ci. Cette composition comprend, en outre, divers composants facultatifs tels que des parfums libres, des colorants, des désintégrants, des agents gonflants d'eau, des modificateurs de porosité et des mélanges de ceux-ci. L'invention concerne également un procédé de traitement des compositions dans un article solide qui consiste à enfermer un parfum dans des particules de support poreux, à chauffer et à incorporer un matériau de support ou un matériau de liaison. Les compositions peuvent, en outre, être traitées par incorporation facultative d'une charge inerte en poudre et par formation d'articles à partir du mélange. Ces articles sont fabriqués à partir des compositions par grelonage, extrusion, ou compactage entre autres techniques. Les articles et les compositions désodorisants libèrent de façon soutenue et régulée les compositions de parfum sur une longue période sans nécessiter l'utilisation de chaleur afin d'activer la libération. On peut citer parmi les articles de fabrication, des articles désodorisants et divers emballages.

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