Fragrance delivery

摘要

A substrate such as a fabric may be provided with a fragrance during washing or rinsing process by the addition to the wash water of a free-flowing solid fragrance-providing composition that comprises a fragrance deposited on a particulate carrier along with a water soluble salt of an alkali metal or an alkaline earth metal.

主权项

1. A method of delivering a fragrance to a substrate during washing or rinsing, comprising:
adding to the wash or rinse water a free-flowing pulverulent solid fragrance-providing composition consisting essentially of a particulate carrier in which is absorbed a fragrance in the form of a liquid or an organic solvent solution, and a water-soluble salt of an alkali or alkaline earth metal, the composition comprising at least 60% by weight of water-soluble salt and not more than 20% by weight of particulate carrier, wherein the particulate carrier is a fine porous fumed silica having a particle size of 2 -15 μM and a BET surface area of from 140 to 550 M2/g, and optionally the particulate carrier also contains up to 50% by weight of other absorbent particulate materials, and wherein the weight ratio of water-soluble salt to fragrance is from 20:1 to 1.5:1.