Composition for slow release of volatile ingredients at _high temperature; and article comprising same

Abstract

Abstract Bodies which are formed compositions of Versalon® type polyamide resin containing from about 35% up to about 70% by weight of highly volatile materials such as perfumes, odorants, insecticides, bactericides, and animal repellents which are able to act in a very diluted vapor state in the air for relatively long periods of time, are described. The highly volatile substances are released in a controlled manner over a long period of time. The molecular weight of the resin is between 9,000 and 12,000, and its softening point varies from 120° C. up to 400° C. In addition, articles are described incorporating said composition and, as part of the instant invention, a light bulb coated with a toroidal article which consists essentially of said composition, is included. The method of our invention comprises heating Versalon® polyamide resin (Note 1) having a molecular weight of from 9,000 up to 12,000 until it is pourable and stirrable, e.g., to a temperature of between 120° C. and 400° C., and then blending from 35 up to 70% of a highly volatile ingredient such as a perfume oil, an insecticide composition, a bactericide composition, or an animal repellent composition, into the melt until a uniform mixture is obtained, and cooling the mixture to solidify it as such or in a toroidal state, preferably rapidly as by quenching in cold water. The product so obtained is then formed into an article such as a coating on a substrate such as an electric light bulb. Alternatively, one or more volatile ingredients are blended into the resin in the feed line of a molding machine in which the resin bodies containing said volatile ingredients are fashioned directly. Minneapolis, Minnesota.

Inventors

• 👤 Jerome I. Lindauer
• 👤 Marina Munteanu
• 👤 Sharon Reich
• 👤 Enrique Pelliza

Bibliographic Details