Process for forming solid phase controllably releasable fragrance-containing consumable articles

• US 6,200,949 B1
• Filed: 12/21/1999
• Issued: 03/13/2001
• Est. Priority Date: 12/21/1999
• Status: Expired due to Term

• Current Assignee: International Flavors & Fragrances Incorporated
• Original Assignee: International Flavors & Fragrances Incorporated
• Inventors: Reijmer, Henricus Gerardus Maria, Shefer, Adi
• Primary Examiner(s): Douyon, Lorna M.
• Application Number:
  US09/468,850
• Time in Patent Office: 448 Days
• Field of Search: 510/443, 510/452, 510/444, 510/394, 510/334, 510/474, 510/470, 424/401
• US Class Current: 510/443
• CPC Class Codes: C11D 11/02 Preparation in the form of powder by spray drying
• CPC Class Codes: C11D 3/001 Softening compositions
• CPC Class Codes: C11D 3/222 Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
• CPC Class Codes: C11D 3/505 encapsulated or adsorbed on a carrier, e.g. zeolite or clay

Abstract

Described is a process for forming controllably releasable fragrance-containing consumable articles, for example, encapsulated fragrances in detergents or fabric softener articles and compositions. The process includes the steps of:

(a) forming an aqueous fragrance emulsion, including a modified starch;

(b) spray drying or freeze drying the emulsion to form a fragrance-containing powder; and

(c) mixing a solid consumable article base (e.g., detergent or fabric softener base) with the fragrance-containing powder.

Also described are products produced by means of such processes as well as uses thereof.

Claims

1. A process for forming a solid phase particulate controllably releasable fragrance-containing detergent-fabric softening composition consisting of the sequential steps of:

(i) initially admixing by means of homogenization water, a maltodextrin, a hydrophobic modified starch and at least one hydrophilic fragrance ingredient in order to form an aqueous fragrance emulsion containing;

40-60% by weight water;

3-30% by weight maltodextrin;

10-40% by weight hydrophobic modified starch; and

7-30% by weight hydrophilic fragrance;

(ii) spray drying or freeze drying the resulting aqueous fragrance emulsion whereby solid phase fragrance-occluded carbohydrate particles are formed having a particle size of from about 3 up to about 10 microns and a fragrance content of from 15-50% by weight are formed;

(iii) admixing a solid powdered detergent with a solid phase clay softener to form a solid phase powdered detergent-softener composition; and

(iv) blending the solid phase fragrance-occluded carbohydrate particles with the powdered detergent-softener composition, thereby forming the solid phase particulate controllably releasable fragrance-containing detergent-fabric softening composition.

2. The process of claim 1 wherein in step (i), the hydrophobic modified starch is a starch alkali metal C₅-C₁₂ alkenyl succinate.

3. The process of claim 2 wherein the hydrophobic modified starch is a starch sodium octenyl succinate.