Perfumed products containing a mixture of perfume materials...

Details Perfumed products containing a mixture of perfume materials... Perfumed products containing a mixture of perfume materials...

1999-06-07

2001-06-05

Naff, David M. (Department: 1651)

Drug, bio-affecting and body treating compositions

Deodorants

C424S195110, C510S130000, C512S001000

Reexamination Certificate

active

06241979

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to perfumed products.
BACKGROUND OF THE INVENTION
It is common practice to incorporate perfume materials in various products, such as personal, domestic and industrial cleaning and hygiene products, for aesthetic reasons. It is also known that certain perfume materials have antimicrobial properties, that is, as well as having pleasant odour characteristics these materials are also effective to kill or inhibit at least certain microorganisms such as bacteria, fungi, yeasts, viruses.
EP 0451889 discloses a number of antimicrobially effective perfume material, including phenylethyl formate, trans-2-hexenal, cis-3-hexenyl acetate, phenylacetaldehyde, cinnamic aldehyde, phenylacetic acid, cinnamic acid, benzyl formate, prenyl acetate, 2-methyl-2-hepten-6-one, methyl hexyl ketone, methyl amyl ketone, amyl propionate, amyl acetate and methyl benzoate, and describes their use in a range of products including shampoo, skin lotion, dishwashing liquid etc.
U.S. Pat. No. 5,420,104 concerns perfuming compositions having antimicrobial and deodorant properties, and their use in products such as soap, detergent and fabric softener.
The present invention is based on the discovery of various additional materials having both perfuming and antibacterial properties.
SUMMARY OF THE INVENTION
In one aspect, the present invention provides a perfumed product comprising at least one perfume material having antibacterial properties and selected from the group comprising: Amberlyn Super PM 577, clove leaf, dihydro myrcenol, phenyl propyl alcohol and terpineol alpha.
Amberlyn Super PM 577 is the trade name of a material containing as its active ingredient Amberlyn, which has the chemical name, dodecahydro-3a,6,6,9a-tetramethylnaphtho[2,1-b]furan available from Quest International.
The invention also covers use of at least one of Amberlyn Super PM 577, clove leaf, dihydro myrcenol, phenyl propyl alcohol or terpineol alpha as an antibacterial agent in a perfumed product.
The term “perfume material” is used to mean a material that imparts to the product fragrance or odour characteristics that are generally considered at least inoffensive and preferably pleasing to intended users of the product.
The term “antibacterial properties” is used to mean effective to kill, inhibit or inactivate at least a proportion of one or more strains of bacteria.
The product is typically a personal, domestic or industrial cleaning of hygiene product. Examples of products to which the invention is applicable include soaps (in bar and liquid form), non-soap detergent bars, non-soap liquid cleaners, deodorants, anti-perspirants, hair care products such as shampoos and conditioners, bath and shower gels and foam products, oral hygiene products such as toothpastes, mouth washes and dental floss, shaving foams, skin lotions and creams, laundry products such as fabric washing powders and liquids, fabric conditioners and fabric softeners, hard surface cleaning products, pet cleaning shampoos and powders, carpet cleaners etc.
The product may comprise more than one of the specified perfume materials. The product may also comprise one or more additional perfume materials, which may or may not have antibacterial properties. For example, good results have been obtained with three mixtures of perfume ingredients, referred to as perfumes 1, 2 and 3, containing the following materials in the specified amounts (by weight):
1
2
3
Amberlyn Super PM 577
0.50
0.40
0.50
Citronellol standard
—
2.70
2.70
Clove leaf
4.50
3.20
3.60
Dihydro myrcenol
5.50
3.50
3.50
Styrally acetate
3.00
2.00
2.00
Benzyl alcohol
10.00
—
10.40
Ethyl vanillin
0.10
0.10
0.10
Moss oakmoss
—
0.40
0.40
Phenyl propyl alcohol
2.70
2.00
2.00
Terpineol alpha
9.00
6.00
6.00
Tetrahydro linalol
—
3.00
3.00
Preferred combinations are Amberlyn Super PM 577 and/or citronellol standard and/or clove leaf and/or dihydro myrcenol and/or styrallyl acetate. Such combinations optionally also include benzyl alcohol and/or ethyl vanillin and/or moss oakmoss and/or phenyl propyl alcohol and/or terpineol alpha and/or tetrahydro linalol.
When incorporated in a toilet soap bar each of perfumes 1, 2 and 3 have been found to give good antibacterial properties.
The antibacterial perfume materials of the invention may be used to replace, in whole or in part, conventional antibacterial materials conventionally used in the perfumed products of interest, without diminishing the antibacterial properties of the product. For example, antibacterial soap bars conventionally include antibacterial agents such as triclosan (2′, 4, 4′-trichloro-2-hydroxy-diphenyl ether), which is commercially available e.g. under the Trade Mark Irgasan DP 300, and trichlorocarbanalide (TCC) (also known as triclocarban). Triclosan is a broad spectrum antimicrobial agent which is known to provide excellent bacteriostatic activity at low concentrations against both Gram positive bacteria and Gram negative bacteria. Triclosan is the antibacterial commonly used in antibacterial soaps. TCC is effective only against Gram positive bacteria. TCC may be used in some antibacterial soaps, usually in combination with triclosan. By incorporating one or more antibacterial perfume materials of the invention into such products, the levels of triclosan and/or TCC may be reduced, with consequent cost savings, without reducing the antibacterial efficacy of the product.
In a further aspect, the invention thus provides a perfumed product comprising an antibacterial agent, and at least one perfume material having antibacterial properties and selected from the group comprising Amberlyn Super PM 577, clover leaf, dihydro myrcenol, phenyl propyl alcohol and terpineol alpha.
The antibacterial agent may comprise one or more of the many materials conventionally used for this purpose, including triclosan, 2,2′-methylene bis (3,4,6-trichlorophenol), 2,4,4′-trichlorocarbanilide, 3,4,4′-trichlorocarbanilide, 2,5,4′-tribromosalicylanilide, 3-trifluoromethyl-4,4′-dichlorocarbanilide, hexachlorophene, dichlorophenol, trichlorosalycilanilide, tribromosalycilanilide (TBS), and tetrachlorosalycilanilide (TCSA).
Other possible antibacterial agents are listed in McCutcheon's Functional Materials (1994 International Edition and 1994 North American Edition).
The antibacterial agent is conveniently present in an amount in the range 0.01 to 10% by weight, typically 0.25 to 0.75% by weight.
The perfume material is conveniently present in an amount in the range 0.01 to 90% by weight, generally in an amount in the range 0.1% to 60% by weight.
The perfumed product may include additional and optional ingredients appropriate to the product in question, as is known to those skilled in the art.
In products containing an antibacterial agent as well as the perfume material it is thought that a synergistic effect may occur between the two ingredients, with the two ingredients in combination giving a greater combined antibacterial effect than would be expected by simply adding together the antibacterial effect of each component.
The invention will be further described, by way of illustration, in the following examples.
The examples concern experiments with antibacterial soap bars to measure antibacterial efficacy using three different tests:
1. Bacterial contact time test (BCT)—Example 1
2. Finger imprint test—Example 2
3. Agar patch test—Example 3
The experiments were carried out with reference to a soap bar having the composition of a commercially available antibacterial soap bar comprising a palm blend/but oil base with conventional antibacterial agents in the form of 0.23% triclosan and 0.02% TCC, with 1.3% of a perfume known as TS 118L. (TS 118L does not include any of the perfume materials of the invention.)
Comparable experiments were carried out on soap bars in accordance with the invention that were generally similar to the reference bar but included a perfume known as BioPink (having the composition of perfume
1
as given above) in place of TS 118L, with either similar or reduc

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