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EP 0 816 484 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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24.08.2005 Bulletin 2005/34 |
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Date of filing: 18.06.1997 |
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Perfume delivery system
Parfümfreisetzungssystem
Système de délivrance de parfums
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Designated Contracting States: |
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CH DE ES FR GB IT LI NL |
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Priority: |
24.06.1996 EP 96110135
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Date of publication of application: |
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07.01.1998 Bulletin 1998/02 |
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Proprietor: Givaudan SA |
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1214 Vernier-Genève (CH) |
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Inventors: |
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- Macris, Jean
Singapore 557260 (SG)
- Tan, Tee Yong
Singapore 400010 (SG)
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Representative: McStea, John Anthony |
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Global Patents
Givaudan Schweiz AG
Ueberlandstrasse 138 8600 Dübendorf 8600 Dübendorf (CH) |
(56) |
References cited: :
EP-A- 0 523 287 GB-A- 2 140 820
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WO-A-94/28107
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- DATABASE WPI Section Ch, Week 8922 Derwent Publications Ltd., London, GB; Class D23,
AN 89-160475 XP002086406 & JP 01 101399 A (SHISEIDO CO LTD) , 19 April 1989
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The invention is related to a perfume carrier for use in detergent compositions,
in particular non-soap detergent compositions, the use of the perfume carriers for
perfuming detergents and a detergent composition containing the perfume carrier.
[0002] Laundry bars, preferably non-soap laundry bars, are, usually, prepared by mixing
at high temperatures (around 90°C) compositions containing minerals, surfactants (detergents)
and perfumes. Such mixture is then extruded, conveniently at a high temperature, e.g.
at around 80°C.
[0003] The perfume is a key ingredient of the composition because it strongly determines
the first choice of the consumer. Because of the high temperatures of preparation
of laundry bars, part of the perfume is lost by evaporation in the plant. One way
of limiting the perfume loss is to design the perfume using perfumery materials with
a low vapour pressure. This way is not fully satisfactory, because it does not avoid
completely perfume losses and it limits to a great extent the palette of fragrance
materials used by the perfumer in creating perfumes.
[0004] The invention in one of its aspects relates to perfume-containing carriers which
limit perfume loss during the manufacture of detergent compositions, in particular
non-soap detergent compositions, especially laundry bars, i.e. detergent composition
bars, and/or increase the perfume storage stability of detergent compositions, in
particular of non-soap detergent compositions, especially of detergent powders and
aforementioned laundry bars. This effect enables a better perfume delivery of freshly
prepared detergent products and also of laundry bars and powders stored under high
temperature and high humidity.
[0005] Many techniques have been used to improve perfume delivery to fabrics:
[0006] Micro encapsulation has been described (USP 4145184, USP 4234627, USP 4096072, USP
4402856, WO 92/18601). The technique is satisfactory, but costs are high.
[0007] Perfumes can also be included in a water insoluble matrix (USP 4152272).
[0008] Other methods consist in adsorbing perfumes on various porous substrates such as
silica, zeolite, clay or polymers. So, USP 4,539,135 discloses a perfume-containing
carrier for use in admixture with a particulate detergent composition or an additive
to a wash solution separate from the detergent composition. The carrier consists essentially
of discrete particles containing at least 90%, by weight, of a clay, in particular
of bentonite, and/or a zeolite, and less than about 5%, by weight, of surface active
detergent compounds and a perfume, which is in the liquid state at ambient temperature
and is adsorbed and/or absorbed on said particles. Further, WO94/28107 discloses a
perfume delivery composition in the form of particles comprising a solid, water-insoluble,
porous carrier which comprises a natural or synthetic zeolite having a nominal pore
size of at least 6 Angstroms, a perfume which is releasably incorporated (trapped)
in the pores of said zeolite carrier to provide a perfumed zeolite and a matrix coated
on said perfumed zeolite comprising a water-soluble composition in which the perfume
is substantially insoluble. The matrix forms a protective barrier entrapping and maintaining
the perfume within the zeolite's pores. The matrix comprises from 0% to 80%, by weight,
of at least one solid polyol containing more than 3 hydroxyl moieties and from 20%
to 100%, by weight, of a fluid diol or polyol in which the perfume is substantially
insoluble and in which the solid polyol is substantially soluble. The polyol or diol
is selected from the group consisting of glycerol, ethylene glycol, and diglycerol.
[0009] Both these disclosures do not overcome the problem of perfume loss by evaporation
during the production of detergent compositions at elevated temperatures as outlined
at the beginning. Therefore, the object of the present invention is to present a perfume
carrier for detergent compositions, in particular for non-soap detergent compositions,
which has low loss of perfume, especially at elevated temperatures, e.g, when laundry
bars or detergent powders are produced and/or stored.
[0010] The present invention now provides a cheap and, in particular, simple means to overcome
the drawbacks of the prior art.
[0011] The following aspects form the invention:
[0012] In one aspect, the present invention relates to compositions, in particular granular
compositions, enabling a better perfume delivery when introduced into detergents,
in particular non-soap detergents, such as laundry bars on detergent powders.
[0013] This aspect covers a perfume carrier suitable for use in detergent compositions,
in particular in non-soap detergent compositions, consisting of a solid water insoluble
mineral, i.e. inorganic carrier, a perfume (composition) and a water and perfume soluble
perfume viscosifier.
[0014] The role of the solid carrier ("the mineral") is mainly to produce solid granules
by adsorbing a perfume/viscosifier mixture. From 20 to 90%, preferably from 50 to
90%, of any solid carrier chosen among the raw materials normally used in detergent
products is usually present. The material of the solid carrier may be silica, a silicate,
in particular a clay, a phosphate or any mixtures thereof. The preferred solid carriers
consist of bentonite, bentonite/sodium tripolyphosphate (STPP), zeolite, bentonite/zeolite,
bentonite/silica.
[0015] The term "zeolite" refers to any crystalline aluminisilicate material of natural
or synthetic origin having a zeolite structure, e.g. having the general formula:
(Na
2O)x.Al
2O
3.(SiO
2)y.zH
2O
A preferred zeolite is Zeolite A as produced by Degussa under the trade name HAB A40.
[0016] Bentonite is a clay, e.g. as sold under the trademark Laundrosil DGA by Süd Chemie
or Mineral Colloid by the Benton Clay Company.
[0017] Silica is, e.g. produced by Degussa under the trademark Supernat 22S.
[0018] Sodium tripolyphosphate is a common raw material used in detergent products; its
purpose is mainly to complex calcium ions. A suitable material is produced by Albright
and Wilson under the trademark Empiphos STPP.
[0019] The term "perfume" stands for the required mixture of any perfume materials of synthetic
and/or natural origin, which is suitable for perfuming soap bars and detergents. It
can contain (small amounts of) the usual solvents and diluents destined for this purpose.
Propylene glycol is an example of such solvent.
[0020] The term "perfume composition", as used in connection with the present invention,
means such solutions of perfume materials.
[0021] In the context of this invention, "perfume" and "perfume composition" will be used
interchangeably.
[0022] The role of the perfume viscosifier is to increase the viscosity of the perfume to
such an extent as to decrease its evaporation and to provide better stability. From
1 to 60% of a polyethylene glycol, especially with a molecular weight from 400 to
20000, more preferably between 2000 and 10000, can be used for this purpose.
[0023] The perfume carriers are preferably prepared in form of granulates by spraying a
mixture of perfume viscosifier and perfume onto the solid carriers in a granulator,
or by simple mixing of the perfume viscosifier/perfume mixture with the solid carriers.
[0024] The suitable concentrations (% w/w) of the components in the perfume carriers are
as follows:
solid carrier |
20-90 |
50-90 |
40-60 |
viscosifier |
0.1-20 |
0.2-5 |
0.5-3 |
perfume |
1-60 |
5-50 |
10-40 |
An effective amount, of the novel perfume carrier, especially about 0,5-20%, should
be present in the final product, whereby the concentration of the perfume in the final
product should conveniently be 0.1 to about 4%, preferably 0.1 to about 2%.
[0025] The detergent composition contains 4% to 80% of a detergent and 0.5% to 20% of a
perfume carrier according to the present invention. The detergent composition has
a perfume concentration of 0.1 to 4%, in particular of 0.1 to 2%. Said detergent composition
in form of laundry bars with such a composition is derived by a process which comprises
the steps of
a) Mixing the usual components of a detergent composition and a perfume carrier according
to the present invention, and
b) extruding such mixtures.
Example 1
[0026] Perfume carriers of the following compositions were prepared:
ingredients |
B2 |
Bentonite |
10 |
Zeolite |
70 |
Polyethylene Glycol 4000 |
1 |
Perfume |
19 |
[0027] B2 was added to a laundry bar composition and a detergent powder composition to reach
a level of perfume of 0.15% in the final compositions and laundry bars and detergent
powder, respectively, were produced.
[0028] The storage stability of the products was assessed against a product of the same
formulation but where the perfume was introduced into the detergent product at a level
of 0.2% (B1) and stored at room temperature. The products with B2 were stored 2 weeks
at 43°C (for the powder) and 55°C (for the laundry bar). The products were then assessed
by sniffing. The following results were found:
Formulation with |
|
Stability laundry bar |
Stability detergent powder |
0.2% of non-protected perfume |
B1 |
good |
good |
0.15% of protected perfume |
B2 |
equivalent to B1 |
equivalent to B1 |
[0029] From these results it can be concluded, that the use of the perfume carrier according
to the invention increases the stability of the perfume when the material products
are stored at higher temperatures, i.e. no or nearly no loss of perfume occurred at
higher temperatures.
Example 2
[0030] Perfume carrier granules of the following composition were prepared:
ingredients |
R1 |
Bentonite |
10 |
STPP |
70 |
Polyethylene Glycol 4000 |
1 |
Perfume |
19 |
[0031] The granules were introduced in a detergent powder to reach a perfume concentration
of 0.15% in the final product, i.e. a product with protected perfume. The perfume
performance under different conditions as shown below was assessed by sniffing against
a benchmark, i.e. a standard, containing 0.2% of non protected perfume.
[0032] The assessment was carried out by a trained panel of 10 people. The products were
evaluated on a 0 to 4 scale, 0 being the worst score and 4 the best.
[0033] The following results were obtained:
Formulation with |
|
after rinse |
in wash |
neat |
0.2% of the non-protected perfume |
benchmark |
3 |
3 |
3 |
0.15% of the protected perfume |
R1 |
3.25 |
3.25 |
3.40 |
[0034] These results show that the protected perfume had a better performance.
1. A perfume carrier suitable for use in detergent compositions, in particular non-soap
detergent compositions, consisting of a solid water insoluble mineral carrier, a perfume
composition and a water and perfume soluble perfume viscosifier.
2. A perfume carrier according to claim 1, wherein the material of the solid carrier
is silica, a silicate, in particular a clay, a phosphate or any mixture thereof.
3. A perfume carrier according to claim 1 or 2, wherein the material of the solid carrier
is bentonite, a mixture of bentonite with zeolite or a mixture of bentonite with sodium
tripolyphosphate, or a mixture of bentonite with silica.
4. A perfume carrier according to any one of claims 1 to 3, wherein the perfume contains
organoleptically active ingredients of natural and/or synthetic origin.
5. A perfume carrier according to any one of claims 1 to 4, wherein the perfume viscosifier
is polyethylene glycol with a molecular weight of 400 to 20 000.
6. A perfume carrier according to any one of claims 1 to 5, wherein the solid carrier
is present in a amount of 20 to 90 %, preferably of 50 to 90 %.
7. A perfume carrier according to any one of claims 1 to 6, wherein the perfume viscosifier
is present in an amount of 0,1 to 20 %, preferably of 0.2 to 5%.
8. A perfume carrier according to any one of claims 1 to 7, wherein the perfume composition
is present in an amount of 1 to 60 %, preferably of 5 to 50 %, most preferably of
10 to 40 %.
9. A perfume carrier according to any one of claims 1 to 8, wherein the detergent composition
is in the form of bars or a powder, in particular in the form of laundry bars.
10. A perfume carrier according to any one of the claims 1 to 9 derived by a process which
comprises spraying a mixture of the perfume viscosifier and the perfume onto the solid
carrier, preferably in a granulator, or mixing a mixture of the perfume viscosifier
and the perfume with the solid carrier.
11. A detergent composition containing about 4% to about 80% of a detergent and about
0.5 to about 20% of a perfume carrier according to any one of claims 1 to 10.
12. A detergent composition according to claim 11 having a perfume concentration of about
0,1 to 4%, in particular of about 0,1 to about 2%.
13. A detergent composition in the form of laundry bars with a composition according to
claim 11 or 12 derived by a process which comprises the steps of
a) mixing the usual components of a detergent composition and a perfume carrier according
to any one of the claims 1 to 10, and
b) extruding such mixtures.
14. The use of a perfume carrier according to any one of the claims 1 to 10 for perfuming
detergents, in particular in the form of bars or a powder, especially to reach a perfume
concentration of about 0,1 to about 4%, in particular of about 0,1 to about 2 %, in
the final product.
15. A method for perfuming a detergent or a detergent composition comprising the step
of adding a carrier as defined in any of the claims 1 to 10 to a detergent or detergent
composition.
1. Parfümträger, geeignet zur Verwendung in Detergenszusammensetzungen, insbesondere
seifenfreien Detergenszusammensetzungen, bestehend aus einem festen wasserunlöslichen
mineralischen Träger, einer Parfümzusammensetzung und einem wasser- und parfümlöslichen
Viskositätsentwickler.
2. Parfümträger nach Anspruch 1, wobei das Material des festen Trägers Siliciumoxid,
ein Silicat, insbesondere ein Ton, ein Phosphat oder ein beliebiges Gemisch davon
ist.
3. Parfümträger gemäß Anspruch 1 oder 2, wobei das Material des festen Trägers Bentonit,
ein Gemisch von Bentonit mit einem Zeolith oder ein Gemisch von Bentonit mit Natriumtripolyphosphat
oder ein Gemisch von Bentonit mit Siliciumoxid ist.
4. Parfümträger nach einem der Ansprüche 1 bis 3, wobei das Parfüm organoleptisch wirksame
Inhaltsstoffe von natürlicher und/oder synthetischer Herkunft enthält.
5. Parfümträger gemäß einem der Ansprüche 1 bis 4, wobei der Parfümviskositätsentwickler
für Polyethylenglykol mit einem Molekulargewicht von 400 bis 20000 steht.
6. Parfümträger nach einem der Ansprüche 1 bis 5, wobei der feste Träger in einer Menge
von 20 bis 90 %, vorzugsweise von 50 bis 90 %, vorliegt.
7. Parfümträger nach einem der Ansprüche 1 bis 6, wobei der Viskositätsentwickler in
einer Menge von 0,1 bis 20 %, vorzugsweise 0,2 bis 5 %, vorliegt.
8. Parfümträger nach einem der Ansprüche 1 bis 7, wobei die Parfümzusammensetzung in
einer Menge von 1 bis 60 %, vorzugsweise von 5 bis 50 %, besonders bevorzugt von 10
bis 40 %, vorliegt.
9. Parfümträger gemäß einem der Ansprüche 1 bis 8, wobei die Detergenszusammensetzung
in der Form von Barren oder Stücken oder als Pulver vorliegt, insbesondere in der
Form von Barren oder Stücken für Wäsche.
10. Parfümträger gemäß einem der Ansprüche 1 bis 9, der erhalten wird durch ein Verfahren,
das umfasst ein Sprühen eines Gemischs von dem Parfümviskositätsentwickler und dem
Parfüm auf den festen Träger, vorzugsweise in einem Granulierer, oder ein Mischen
eines Gemischs von dem Parfümviskositätsentwickler und dem Parfüm mit dem festen Träger.
11. Detergenszusammensetzung, enthaltend etwa 4 % bis etwa 80 % von einem Detergens und
etwa 0,5 bis etwa 20 % von einem Parfümträger nach einem der Ansprüche 1 bis 10.
12. Detergenszusammensetzung gemäß Anspruch 11, die eine Parfümkonzentration von etwa
0,1 bis 4 %, insbesondere von etwa 0,1 bis etwa 2 %, aufweist.
13. Detergenszusammensetzung in der Form von Barren oder Stücken für Wäsche mit einer
Zusammensetzung gemäß Anspruch 11 oder 12, erhalten durch ein Verfahren, das die Stufen
umfasst von
a) Mischen der üblichen Bestandteile von einer Detergenszusammensetzung und eines
Parfümträgers nach einem beliebigen der Ansprüche 1 bis 10 und
b) Extrudieren solcher Gemische.
14. Verwendung von einem Parfümträger nach einem der Ansprüche 1 bis 10 zum Parfümieren
von Detergenzien, insbesondere in Form von Barren oder Stücken oder eines Pulvers,
insbesondere um eine Parfümkonzentration von etwa 0,1 bis etwa 4 %, insbesondere von
0,1 bis etwa 2 %, in dem Endprodukt zu erreichen.
15. Verfahren zum Parfümieren von einem Detergens oder einer Detergenszusammensetzung,
umfassend die Stufe des Zugebens eines Trägers, wie in einem der Ansprüche 1 bis 10
definiert, zu einem Detergens oder einer Detergenszusammensetzung.
1. Véhicule de parfum approprié pour être utilisé dans des compositions détergentes,
en particulier dans des compositions détergentes non saponacées, constitué d'un véhicule
minéral solide insoluble dans l'eau, d'une composition de parfum et d'un améliorant
de viscosité de parfum soluble dans l'eau et dans le parfum.
2. Véhicule de parfum selon la revendication 1, dans lequel la matière du véhicule solide
est de la silice, un silicate, en particulier une argile, un phosphate ou un mélange
quelconque de ceux-ci.
3. Véhicule de parfum selon la revendication 1 ou 2, dans lequel la matière du véhicule
solide est de la bentonite, un mélange de bentonite avec de la zéolite ou un mélange
de bentonite avec du tripolyphosphate de sodium, ou un mélange de bentonite avec de
la silice.
4. Véhicule de parfum selon l'une quelconque des revendications 1 à 3, dans lequel le
parfum contient des ingrédients d'origine naturelle et/ou synthétique, actifs sur
le plan organoleptique.
5. Véhicule de parfum selon l'une quelconque des revendications 1 à 4, dans lequel l'améliorant
de viscosité de parfum est un polyéthylèneglycol ayant un poids moléculaire de 400
à 20 000.
6. Véhicule de parfum selon l'une quelconque des revendications 1 à 5, dans lequel le
véhicule solide est présent à raison de 20 à 90%, de préférence de 50 à 90%.
7. Véhicule de parfum selon l'une quelconque des revendications 1 à 6, dans lequel l'améliorant
de viscosité de parfum est présent à raison de 0,1 à 20%, de préférence de 0,2 à 5%.
8. Véhicule de parfum selon l'une quelconque des revendications 1 à 7, dans lequel la
composition de parfum est présente à raison de 1 à 60%, de préférence de 5 à 50%,
le plus préférablement de 10 à 40%.
9. Véhicule de parfum selon l'une quelconque des revendications 1 à 8, dans lequel la
composition détergente se présente sous forme de pains ou de poudre, en particulier
sous forme de pains de lavage du linge.
10. Véhicule de parfum selon l'une quelconque des revendications 1 à 9, obtenu par un
procédé qui comprend la pulvérisation d'un mélange de l'améliorant de viscosité de
parfum et du parfum sur le véhicule solide, de préférence dans un granulateur, ou
le mélange d'un mélange de l'améliorant de viscosité de parfum et du parfum avec le
véhicule solide.
11. Composition détergente contenant environ 4% à environ 80% d'un détergent et environ
0,5 à environ 20% d'un véhicule de parfum selon l'une quelconque des revendications
1 à 10.
12. Composition détergente selon la revendication 11, ayant une concentration de parfum
d'environ 0,1 à 4%, en particulier d'environ 0,1 à environ 2%.
13. Composition détergente sous forme de pains de lavage du linge avec une composition
selon la revendication 11 ou 12, obtenue par un procédé qui comprend les étapes de
a) mélange des composants habituels d'une composition détergente et d'un véhicule
de parfum selon l'une quelconque des revendications 1 à 10, et
b) extrusion de tels mélanges.
14. Utilisation d'un véhicule de parfum selon l'une quelconque des revendications 1 à
10 pour parfumer des détergents, en particulier sous forme de pains ou de poudre,
en particulier pour atteindre une concentration de parfum d'environ 0,1 à environ
4%, en particulier d'environ 0,1 à environ 2%, dans le produit final.
15. Procédé pour parfumer un détergent ou une composition détergente, comprenant l'étape
d'addition d'un véhicule tel que défini dans l'une quelconque des revendications 1
à 10, à un détergent ou une composition détergente.