Cleaning compositions for solid surfaces – auxiliary compositions – With oxygen – halogen – sulfur – or nitrogen containing or...
Reexamination Certificate
2001-09-11
2004-02-24
Hardee, John (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
With oxygen, halogen, sulfur, or nitrogen containing or...
C512S001000, C206S484000
Reexamination Certificate
active
06696395
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to stable aqueous perfumed household cleaning and deodorizing compositions containing a surfactant and a perfume. The perfume is in a solubilized or emulsified state and contains a substantial proportion of hydrophobic perfume materials in order to impart a clean, desirable, scent to substrates upon which the product is used. The composition is packaged in a polyethylene bottle wherein the interior of the bottle has been modified in order to prevent undesirable changes in the perfume caused by absorption and/or transmission of the hydrophobic components into and/or through the polyethylene during storage.
BACKGROUND
It is recognized that consumers appreciate household cleaning, fabric treatment and deodorizing products which impart a pleasant odor to surfaces treated with said products. It has been found that in the formulation of perfumes for said products, the use of a substantial proportion of hydrophobic perfume materials in said perfumes is desirable.
For convenience and flexibility in use, it is highly desirable that household cleaning and deodorizing and fabric treatment compositions be in liquid form and packaged in plastic bottles. For cost reasons, polyethylene is a preferred material for manufacturing bottles for such compositions. It has been found however, that hydrophobic perfume materials have a tendency to be lost from the liquid product by absorption into and/or transmission through the polyethylene during storage of the composition. This results in a change in the odor character of the composition and a reduction in the fragrance benefit which would otherwise be obtained on surfaces treated with the composition.
All documents referred to herein are incorporated by reference and all percentages and proportions are by weight, unless otherwise specified.
SUMMARY OF THE INVENTION
The present invention relates to a bottled aqueous household cleaning, fabric treatment or deodorizing product comprising, in addition to water, from 0.01% to 50% of a surfactant and from 0.003% to 5% of a perfume wherein the perfume contains at least 10% of one or more hydrophobic perfume ingredients having a ClogP of greater than 3, and wherein the said product is present in a high density polyethylene bottle and wherein the bottle has a continuous inner surface layer of a material selected from the group consisting of:
a) nylon
b) polyethylene terephthalate and
c) fluorinated high density polyethylene
DETAILED DESCRIPTION OF THE INVENTION
In accordance with the present invention it has been found that when aqueous household cleaning, fabric treatment or deodorizing compositions comprising water, surfactant and perfume are packaged in conventional high density polyethylene (HDPE) bottles there is a tendency for certain hydrophobic perfume ingredients (i.e. those having a ClogP of about 3 or greater) to be lost from the perfume. This is apparently by migration into and/or through the polyethylene bottle material. When the perfumes contain substantial amounts of such perfume ingredients, such loss considerably alters the intended fragrance character of the perfume. Bottles made of polyethylene terephthalate (PET) or glass do not exhibit this detrimental effect on perfumes. However, consumers prefer plastic containers over glass, and polyethylene is a less expensive plastic than PET. It has now been found that by use of HDPE bottles which have certain interior surface modifications, the loss of these hydrophobic perfume ingredients can be substantially eliminated.
The present invention is a bottled aqueous household cleaning, fabric treatment or deodorizing composition comprising, in addition to water, from 0.01% to 50% of a surfactant and from 0.003% to 5% of a perfume wherein the perfume contains at least 10% of one or more hydrophobic perfume ingredients having a ClogP of greater than 3, and wherein the said composition is present in a high density polyethylene bottle wherein the bottle has a continuous inner surface layer of a material selected from the group consisting of:
a) nylon
b) polyethylene terephthalate and
c) fluorinated high density polyethylene
A. Surfactants
Surfactants suitable for use in the compositions of the present invention can be any of those suitable for use in household cleaning, fabric treatment or deodorizing compositions. These include anionic, nonionic, cationic, ampholytic and zwitterionic detergents.
Examples of anionic detergents include C
8
-C
22
alkyl sulfates, alkylbenzene sulfonates having from 9 to 15 carbon atoms in the alkyl group, alkyl ethyleneoxide ether sulfates having from 8-22 carbon atoms in the alkyl chain and from 1 to 30 ethylene oxide groups, and C
8
to C
22
fatty acid soaps. Examples of nonionic surfactants include condensates of from 3 to 30 moles of ethylene oxide with an aliphatic alcohol of 8 to 22 carbon atoms, condensates of 5 to 30 moles of ethylene oxide with an alkyl phenol wherein the alkyl contains 9 to 15 carbon atoms, and C
8
to C
22
alkyl dimethyl amine oxides. Examples of ampholytic and zwitterionic surfactants are found in U.S. Pat. No. 3,929,678, Laughlin et al, issued Dec. 30, 1975 at Col, 19, line 38 through Col. 22 line 48. Examples of cationic surfactants are tetraalkyl quaternary ammonium salts having at least one alkyl chain of 8 to 22 carbon atoms, wherein the other alkyl groups can contain from 1 to 22 carbon atoms and wherein the anionic counterion is halogen, ethylsulfate or methylsulfate. The term “household cleaning and fabric treatment and deodorizing compositions” herein includes fabric laundering, softening and freshening compositions, and floor, rug and other household surface treatment compositions where it is desired to clean and/or impart a beneficial treatment or property to the surface. Surtactants are used at levels of from 0.01% to 50%, depending on the intended usage of the product. Typical levels are from 0.1% to 30% and 5% to 20%
Additional surfactants are disclosed in U.S. Pat. No. 3,664,961, Norris, issued May 23, 1972.
B. Perfumes
The compositions of the present invention contain perfumes at levels of from 0.003% to 5%, preferably from 0.003% to 1% and more preferably from 0.05% to 0.2%. The perfumes contain a substantial portion of perfume ingredients (at least about 10%, preferably at least 50%, more preferably at least 70%) which have a ClogP of at least 3.
The logP of many perfume ingredients has been reported; for example, the Pomona92 database, available from Daylight Chemical Information Systems, Inc. (Daylight CIS), Irvine, Calif., contains many, along with citations to the original literature. However, the logP values are most conveniently calculated by the Pamona Med Chem/Daylight “CLOGP” program, Version 4.42 available from Biobyte Corporation, Claremont, Calif. This program also lists experimental logP values when they are available in the Pomona92 database. The “calculated logP” (ClogP) is determined by the fragment approach of Hansch and Leo (cf., A. Leo, in Comprehensive Medicinal Chemistry, Vol. 4, C. Hansch, P. G. Sammens, J. B. Taylor and C. A. Ramsden, Eds., p. 295, Pergamon Press, 1990, incorporated herein by reference). The fragment approach is based on the chemical structure of each perfume ingredient, and takes into account the numbers and types of atoms, the atom connectivity, and chemical bonding. The ClogP values, which are the most reliable and widely used estimates for this physicochemical property, are preferably used instead of the experimental logP values in the selection of perfume ingredients which are useful in the present invention.
The following table contains a listing of examples of perfume ingredients having a ClogP of at least 3 which are useful in the present invention.
TABLE I
Ingredient
ClogP
Citronellol
3.25
Vertenex
4.06
Terpinyl acetate
3.58
geranyl acetate
3.72
Diphenyl methane
4.06
Lilial (P.T. Bucinal)
3.86
Hexyl cinnamic aldehyde
4.85
Cedryl acetate
5.48
Tonalid
6.25
d-Limonene
4.35
Tetrahydro linalool
3.52
Dihydro myrcenol
3.03
Benzyl salicylate
4.21
Gamma methyl ionone
4.02
Cis-hexe
Fritz Mark David
Ireton Kimberly Ann
Reece Steven
Schneiderman Eva
Streutker Alen David
Camp Jason J.
Charles Mark A.
Corstanie Brahm J.
Hardee John
The Procter & Gamble & Company
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