OIL-CONTAINING STARCH GRANULES FOR DELIVERING PERFUME OIL AS BENEFICIAL EFFECT ENDOWING ADDITIVES TO SUBSTRATE, METHOD OF OBTAINING SAID GRANULES AND LAUNDRY DETERGENT COMPOSITION Russian patent published in 2011 - IPC C11D3/50 C11D3/22 C11D1/62 C11D17/00 C11D11/02 C11D17/06 

FIELD: chemistry.

SUBSTANCE: invention relates to oil-containing starch granules for delivering perfume oil as beneficial effect endowing additives to a substrate, containing: (a) starch in amount which forms an effective matrix for said granules; (b) perfume oil containing ingredients with Clog P equal to at least 3; and (c) an effective amount of an amidoamine compound for inhibiting migration of said oil to the surface of the said starch granules, said compound has the following structure: (I) or (II), where radicals are described in the claim separately for each structure. The invention also relates to a method of producing oil-containing starch granules, comprising the following steps: (a) preparing a dispersion of starch in water to form a starch suspension; (b) melting an effective amount of the amidoamine compound of structure (I) or (II) to obtain a molten amidoamine compound; (c) adding perfume oil to the molten amidoamine compound from step (b) to obtain a solution of the amidoamine compound in perfume oil; (d) adding the solution from step (c) to the starch suspension from step (a); (e) homogenisation of the obtained suspension by mixing to obtain a homogeneous mixture; and (f) spray drying the said homogeneous mixture to obtain oil-containing starch granules. The invention also relates to a method of washing fabric, comprising the following steps: (a) preparation of an aqueous solution containing an effective amount of the oil-containing starch granules in claim 1 or 2, and (b) bringing the fabric to be washed into contact with the aqueous solution from step (a). The invention also pertains to a laundry detergent composition containing: (a) at least one surfactant; and (b) an effective amount of oil-containing starch granules.

EFFECT: prolonged existence of the aromatising agent in the substrate owing to inhibition of migration of perfume oil to the surface during laundry.

7 cl, 5 tbl