Cologne consisting of microcapsule suspension

Claim 1

A cologne comprising particles of a composition consisting essentially of (a) from about 1 up to 10 parts by weight of a non-confined fragrance oil substance selected from the group consisting of non-confined hydrophobic fragrance oils and aqueous emulsions of fragrance oils; (b) from about 2 up to about 10 parts by weight of an entrapped fragrance oil capable of being released hydrolytically or by means of application of mechanical pressure, said fragrance oil being physically entrapped in a particulate material selected from the group consisting of gelatin, dextrin, gum acacia, urea formaldehyde polymers, modified food starch and synthetic polymers capable of being dissolved or decomposed hydrolytically, said solid material having a particle size of from about 3 microns up to about 400 microns, said physically entrapped fragrance oil being organoleptically compatible with said non-confined hydrophobic fragrance oil or fragrance oil emulsion; and (c) from about 0.1 up to about 10 parts by weight of a suspending agent selected from the group consising of hydroxypropyl cellulose having a molecular weight of from about 50,000 up to about 800,000; xanthan gum, ethyl cellulose, silica, suspensions of finely divided clay in water, suspensions of an aqueous fluid-absorbing composition comprising water in soluble alkali salts of aqueous alkali saponified, gelatinized-starch-polyacrylonitrile graft polymers which contain gelatinized starch (GS) and saponified polyacrylonitrile (HPAN) in molar ratios of from about 1:1.5 to about 1:9 GS:HPAN, whereby after the cologne is intimately admixed with ethanol and water a fragrance is released at high fragrance intensity substantially evenly and uniformly over an extended period of time.

Claim 9

A method for preparing a cologne comprising the steps of (i) admixing from about 2 up to about 10 parts by weight of the combination of a fragrance oil, ethanol, a surfactant and a stabilizer; (ii) admixing water with a finely divided clay or an aqueous fluid-absorbing composition comprising water in soluble alkali salts of aqueous alkali saponified gelatinized starch-polyacrylonitrile graft polymers which contain gelatinized starch (GS) and saponified polyacrylonitrile (HPAN) in molar ratios of from about 1:1.5 up to about 1:9 GS:HPAN to form a second mixture; (iii) admixing said first mixture with said second mixture to form a first suspension; (iv) admixing said first suspension with from about 2 up to about 10 parts by weight of a hydrolytically releasable fragrance oil physically entrapped in a solid material selected from the group consisting of hydrolytically dissolvable or decomposable polymer, urea formaldehyde polymer, gelatin, dextrin, gum acacia and modified food starch, said solid material having a particle size of from about 5 microns up to about 400 microns thereby forming a second suspension, said physically entrapped fragrance oil being organoleptically compatible with said fragrance oil contained in said first mixture.

Claim 10

A method for preparing a cologne comprising the steps of (i) admixing from about 2 up to about 10 parts by weight of the combination of a fragrance oil, ethanol, a surfactant and a stabilizer; (ii) admixing water with a finely divided clay or an aqueous fluid-absorbing composition comprising water in soluble alkali salts of aqueous alkali saponified gelatinized starch-polyacrylonitrile graft polymers which contain gelatinized starch (GS) and saponified polyacrylonitrile (HPAN) in molar ratios of from about 1:1.5 up to about 1:9 GS:HPAN to form a second mixture; (iii) admixing said first mixture with said second mixture to form a first suspension; (iv) admixing said first suspension with from about 2 up to about 10 parts by weight of a hydrolytically releasable fragrance oil physically entrapped in a solid material selected from the group consisting of hydrolytically dissolvable or decomposable polymer, urea formaldehyde polymer, gelatin, dextrin, gum acacia and modified food starch, said solid material having a particle size of from about 5 microns up to about 400 microns thereby forming a second suspension, said physically entrapped fragrance oil being organoleptically compatible with said fragrance oil contained in said first mixture.