Fragrance delivery systems

• US 6,147,037 A
• Filed: 02/19/1999
• Issued: 11/14/2000
• Est. Priority Date: 08/19/1996
• Status: Expired due to Fees

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Sivik, Mark Robert, Gardlik, John Michael
• Primary Examiner(s): Hardee, John R.
• Application Number:
  US09/242,625
• Time in Patent Office: 634 Days
• Field of Search: 512/27, 510/101, 510/106, 510/107
• US Class Current: 510/107
• CPC Class Codes: A61K 2800/57 Compounds covalently linked to a(n inert) carrier molecule, e.g. conjugates, pro-fragrances
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/27 Zinc; Compounds thereof
• CPC Class Codes: A61K 8/37 Esters of carboxylic acids
• CPC Class Codes: A61K 8/416 Quaternary ammonium compounds A61K8/35 takes precedence
• CPC Class Codes: A61K 8/43 Guanidines
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/466 containing sulfonic acid derivatives; Salts
• CPC Class Codes: A61K 8/738 Cyclodextrins
• CPC Class Codes: A61K 8/90 Block copolymers A61K8/89 takes precedence
• CPC Class Codes: A61Q 13/00 Formulations or additives for perfume preparations essential oils or perfumes per se C11B9/00
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00
• CPC Class Codes: C07C 69/007 Esters of unsaturated alcohols having the esterified hydroxy group bound to an acyclic carbon atom
• CPC Class Codes: C07C 69/716 Esters of keto-carboxylic acids or aldehydo-carboxylic acids
• CPC Class Codes: C07C 69/738 Esters of keto-carboxylic acids or aldehydo-carboxylic acids
• CPC Class Codes: C11D 3/2093 Esters; Carbonates
• CPC Class Codes: C11D 3/507 Compounds releasing perfumes by thermal or chemical activation

Abstract

The present invention relates to a fragrance delivery system which comprises one or more pro-accords, preferably β-ketoester pro-accords, which are capable of releasing mixtures of fragrance raw materials. The pro-accords which comprise the fragrance delivery systems are useful in delivering sustained fragrances to personal care items inter alia deodorants, body lotions or creams, sun tan lotions, shampoos, as well as liquid and granular laundry detergent compositions and hard surface cleaners.

Claims

1. A composition for delivery of enduring fragrance or accord comprising:

a) from about 0.01% by weight, of a β

-ketoester selected from the group consisting of 3,7-dimethyl-1,6-octadien-3-yl 3-(β

-naphthyl)-3-oxo-propionate, 2,6-dimethyl-7-octen-2-yl 3-(4-methoxyphenyl)-3-oxo-propionate, 2,6-dimethyl-7-octen-2-yl 3-(4-nitrophenyl)-3-oxo-propionate, 2,6dimethyl-7-octen-2-yl 3-(β

-naphthyl)-3-oxo-propionate, 3,7dimethyl-1,6-octadien-3-yl 3-(4-methoxyphenyl)-3-oxo-propionate, (α

,α

-4-trimethyl-3-cyclohexenyl)methyl 3-(β

-naphthyl)-3-oxo-propionate, 3,7-dimethyl-1,6-octadien-3-yl 3-(α

-naphthyl)-3-oxo-propionate, cis 3-hexen-1-yl 3-(β

-naphthyl)-3-oxo-propionate, 9-decen-1-yl 3-(β

-naphthyl)-3-oxo-propionate, 3,7-dimethyl-1,6-octadien-3-yl 3-(nonanyl)-3-oxo-propionate, 2,6-dimethyl-7-octen-2-yl 3-(nonanyl)-3-oxo-propionate, 2,6-dimethyl-7-octen-2-yl 3-(β

-naphthyl)-3-oxo-2-methylpropionate, 3,7-dimethyl-1,6-octadien-3-yl 3-(β

-naphthyl)-3-oxo-2,2-dimethylpropionate, 3,7-dimethyl-1,6-octadien-3-yl 3-(β

-naphthyl)-3-oxo-2-methylpropionate, 3,7-dimethyl-2,6-octadienyl 3-(β

-naphthyl)-3-oxo-propionate, 3,7-dimethyl-2,6-octadienyl 3-heptyl-3-oxo-propionate, and mixtures thereof; and

b) the balance comprising a carrier, said carrier selected from the group consisting of water, C₁ -C₃ alcohols, C₂ -C₈ poly hydroxy alcohols, water soluble cationic and anionic polymers, polyethylene glycols, and mixtures thereof.

2. A composition according to claim 1 wherein said carrier is ethanol.

3. A composition according to claim 1 wherein said carrier is a polyacrylate anionic polymer having an average molecular weight of less than about 20,000.

4. A composition according to claim 1 wherein said carrier is a copolymer of dimethyldiallyl ammonium chloride and acrylic acid.

5. A composition according to claim 1 further comprising a nonionic surfactant.