US 5,069,231 AGranted

Method for imparting functional ingredients, functional ingredient-imparting articles and methods for preparation and use thereof

AssigneeInternational Flavors & Fragrances Inc.

InventorHoward J. Rutherford

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Abstract

Described are methods for effecting the controlled release of the functional organoleptic materials, to wit: (a) perfumery materials; (b) insect attractants; (c) insect repellents; (d) animal repellents; (e) fabric softener compositions; (f) flavor materials; (g) surface active agents; and (h) insect pheromones over a relatively long period of time and, in the same time frame, effecting an initial "Burst" of the same or different organoleptic functional materials over a relatively short period of time. Also described are articles useful in effecting the controlled release of such functional organoleptic materials over a relatively long period of time and in the same time frame effecting an initial "Burst" of the same or different organoleptic functional materials over a relatively short period of time.

Claims39

Dependent claims

An article capable of effecting controlled release of a functional material therefrom into the environment surrounding the article consisting of:

(a) a core or a plurality of cores consisting of the same or different releasable functional materials dispersed within a first polymeric substance;
(b) coated onto a substantial portion of the surface of the core or cores, a barrier polymer coating consisting of a second polymeric substance, the second polymeric substance having a permeability to the mass transport of functional material contained within the core or within one or more of the plurality of cores which is substantially less than the permeability of the first polymeric substance to the mass transport;
and
(c) coated onto a substantial portion of the outer surface of the barrier polymer coating, a functional material-burst coating consisting of one or more of the same or different functional material dispersed within a third polymeric substance;
(i) a portion of the total surface area of the core or cores being directly in contact with the environment surrounding the article;
(ii) the average molecular weight of each of the functional being greater than about 100;
(iii) the totality of the outer surface of the functional material-burt coating being directly in contact with the environment surrounding the article;
and
(iv) the functional materials in the core being the same as or different from the functional materials in the functional material-burst coating.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/407,064Filed 14 Sep 1989 · continuation in part
Priority: 12 Jul 1989
Granted: 3 Dec 1991
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A01M 1/2055
Without heating: holders or dispensers for solid, gelified or impregnated insecticide, e.g. volatile blocks or impregnated pads
A01K 55/00
Bee-smokers
A01M 1/02
Stationary means for catching or killing insects: with devices or substances, e.g. food, pheronones attracting the insects
A01M 1/2044
Without heating: holders or dispensers for liquid insecticide, e.g. using wicks