[0001] The present invention relates to a dispensing system comprising a dispensing device
and a fluid laundry composition comprising an encapsulated bleach catalyst contained
in a dispensing device.
[0002] Laundry compositions comprising bleaches are known (see
GB e.g. 2267911 and
US 5747441). Bleaches are used to remove stains from fabrics.
[0003] In a first aspect, the invention provides a dispensing system comprising a dispensing
device and a laundry fluid comprising capsules containing a bleach catalyst, contained
in a dispensing device, the dispensing device comprising:
1. a reservoir containing the laundry fluid, each of the principal dimensions of the
reservoir being greater than the average diameter of the capsules,
2. a dispensing outlet in fluid communication with the reservoir and having, in at
least one part, a rupture diameter which is less than the average diameter of the
capsules;
wherein the laundry fluid is dispensed from the reservoir by forcing the laundry fluid
to egress via the dispensing outlet, and the passage of capsules through the dispensing
outlet ruptures the capsules, thereby releasing the bleach catalyst as the laundry
fluid is dispensed.
[0004] In a further aspect the invention provides a method of dispensing a laundry fluid
comprising capsules containing a bleach catalyst, by employing the device of the first
aspect of the invention to dispense the fluid and released bleach catalyst e.g. into
a washing machine draw, dosing device.
[0005] In a further aspect the invention provides a method of pretreating a fabric with
a laundry bleach catalyst, by employing the device of the first aspect of the invention
to dispense the fluid and released bleach catalyst directly on to the fabric.
[0006] In a further aspect the invention provides a method of directly bleaching a fabric,
by employing the device of the first aspect of the invention to dispense the fluid
and released bleach catalyst directly on to the fabric.
[0007] This method may be part of a pre-treating method, that is pre-treating a fabric prior
to a subsequent washing operation e.g. a wash cycle carried out in an automatic washing
machine.
[0008] In a further aspect the invention provides a method of washing a fabric or treating
a fabric, the method comprising dispensing a laundry fluid comprising capsules containing
a bleach catalyst from the device of the first aspect of the invention and applying
to the fabric.
[0009] With this arrangement, the bleach catalyst is protected from the naturally occurring
process of autoxidation of organic components within the fluid produces alkylhydroperoxides
which, over time (e.g. during transport, storage) interact with the bleach catalyst.
Thus, bleach performance can be maintained until such time as the consumer is ready
to use the product.
[0010] The invention provides a relatively inexpensive dispensing system, in terms of financial
and environmental cost in what can be an uncomplicated device which can be used so
long as the dispensing outlet is dimensioned relative to the capsule size.
[0011] Advantageously, capsules can be made very strong to withstand high forces imposed
by storage and transport. The extra force to rupture is conveniently provided precisely
at the time of dispensing, by means of compression in an outlet conduit so that the
active material is released only when required. This allows fine tuning of the capsule
properties to enhance strength without risking poor delivery and performance due to
lack of capsule rupture.
[0012] As used herein, the term 'fluid' is intended to include a liquid, gel or paste, but
excludes dry powder formats.
[0013] The fluid may be formulated to provide a suspension of the capsules in it, so as
to enable uniform dosage, if desired.
[0014] The term "principal dimensions" is intended to include those parameters generally
necessary for measurement of a three dimensional space. In the case of a generally
rectangular or square body, the principal dimensions are width, depth, height; whereas
with standard the case of a spherical reservoir, the diameter will be principal dimension.
Typically, capsules to be carried by a liquid will be generally spherical. For non-uniform
capsule shapes the greater dimension would be the relevant one. E.g. for an ellipsoids
capsule, the greater diameter.
[0015] The dispensing outlet may be a single or multiple nozzle arrangement whereby the
diameter/s of the nozzle/s tapers (i.e. gradually) reduces in the direction of the
exit, at which point, rupture diameter is reached. This provides the advantage that
rupture occurs only at the point of exit.
[0016] The dispensing outlet may comprise one or more sections of constant diameter upstream
(or even downstream) of part having the rupture diameter. This has the advantage that
the capsules are ruptured progressively as they move along the section/s of constant
diameter.
[0017] The dispensing outlet may comprise multiple successive, conduits each having one
or more sections of rupture diameter for progressive rupture of the capsules e.g.
if they are in high concentration. Such sections may each be separated by a section
of higher diameter which may be constant or tapered along the length.
[0018] There may be multiple conduits within the dispensing outlet each having one or more
sections with a rupture diameter as described above. Multiple conduits are advantageous
for example if a relatively high dosage (which may be 30-100 ml for main wash laundry
purposes) is needed to be dispensed for a single use.
[0019] The largest diameter of the conduit through which the fluid flows may correspond
to rupture diameter. The encapsulates are then extended just before the nozzle so
that they are ruptured and open to discharge the bleach encapsulate just before they
exit from the outlet, along with the liquid/gel/paste into the surroundings.
[0020] The fluid may be forced out of the reservoir by any suitable means, for example,
it may forced out by compressing the reservoir. To this end, the reservoir preferably
is, in whole or in part, compressible. To this end the reservoir may be in whole or
part flexible to allow squeezing. The reservoir may also be, in whole or in part,
resilient such that once the compressive force is removed, the reservoir expands again,
so as to relieve pressure on its contents thereby enhancing integrity of stored capsules.
[0021] Preferably the material to be encapsulated is present in less than 10% of the total
formulation amount. This allows for effective rupture.
THE BLEACH CATALYST
[0022] The bleach catalyst may comprise selected transition metal catalysts in the absence
of an added peroxyl source, i.e., where the bleaching composition is substantially
devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating bleach system.
[0023] The term "substantially devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating
bleach system" should be construed within spirit of the invention. It is preferred
that the composition has as low a content of peroxyl species present as possible.
It is preferred that the bleaching formulation contains less that 1 % wt/wt total
concentration of peracid or hydrogen peroxide or source thereof, preferably the bleaching
formulation contains less that 0.3 % wt/wt total concentration of peracid or hydrogen
peroxide or source thereof, most preferably the bleaching composition is devoid of
peracid or hydrogen peroxide or source thereof.
[0024] In addition, it is preferred that the presence of alkyl hydroperoxides are kept to
a minimum in the bleaching composition.
[0025] We have concluded from our research that bleaching of a chromophore in an oily stain
is effected by products formed by adventitious oxidation of components in the oily
stain. These products, alkyl hydroperoxides, are generated naturally by autoxidation
of the oily stain and the alkyl hydroperoxides together with a transition metal catalyst
serve to bleach chromophores in the oily stain. Alkyl hydroperoxides (ROOH) are generally
less reactive that other peroxy species, for example, peracids (RC(O)OOH), hydrogen
peroxide (H2O2), percarbonates and perborates. In this regard, the phrase "for bleaching
a substrate with atmospheric oxygen" is synonymous with "for bleaching a substrate
via atmospheric oxygen" because it is the oxygen in the air that provides the bleaching
species used by catalyst to bleach the substrate stain.
[0026] The bleach catalyst per se may be selected from a wide range of transition metal
complexes of organic molecules (ligands). In typical washing compositions the level
of the organic substance is such that the in-use level is from 0.05 µM to 50 mM, with
preferred in-use levels for domestic laundry operations falling in the range 1 to
100 µM. Higher levels may be desired and applied in industrial textile bleaching processes.
A mixture of different catalysts may be employed in the bleaching composition.
[0028] The ligand forms a complex with one or more transition metals, in the latter case
for example as a dinuclear complex. Suitable transition metals include for example:
manganese in oxidation states II-V, iron II-V, copper I-III, cobalt I-III, titanium
II-IV, tungsten IV-VI, vanadium II-V and molybdenum II-VI.
[0029] An example of a preferred catalyst is a monomer ligand or transition metal catalyst
thereof of a ligand having the formula (I):

wherein each R is independently selected from: hydrogen, F, Cl, Br, hydroxyl, C1-C4-alkylO-,
-NH-CO-H, -NH-CO-C1-C4-alkyl, -NH2, -NH-C1-C4-alkyl, and C1-C4-alkyl;
R1 and R2 are independently selected from:
C1-C4-alkyl,
C6-C10-aryl, and,
a group containing a heteroatom capable of co-ordinating to a transition metal, wherein
at least one of R1 and R2 is the group containing the heteroatom;
R3 and R4 are independently selected from hydrogen, C1-C8 alkyl, C1-C8-alkyl-O-C1-C8-alkyl,
C1-C8-alkyl-O-C6-C10-aryl, C6-C10-aryl, C1-C8-hydroxyalkyl, and -(CH2)
nC(O)OR5
wherein R5 is independently selected from: hydrogen, C1-C4-alkyl, n is from 0 to 4,
and mixtures thereof; and,
X is selected from C=O, -[C(R6)
2]
y- wherein Y is from 0 to 3 each R6 is independently selected from hydrogen, hydroxyl,
C1-C4-alkoxy and C1-C4-alkyl.
[0030] With regard to the above formula (I) it is also particularly preferred that R1 and
R2 may also be independently selected from: C1 to C22-optionally substituted alkyl,
and an optionally substituted tertiary amine of the form -C2-C4-alkyl-NR7R8, in which
R7 and R8 are independently selected from the group consisting of straight chain,
branched or cyclo C1-C12 alkyl, benzyl, the -C2-C4-alkyl- of the -C2-C4-alkyl-NR7R8
may be substituted by 1 to 4 C1-C2-alkyl, or may form part of a C3 to C6 alkyl ring,
and in which R7 and R8 may together form a saturated ring containing one or more other
heteroatoms.
[0031] Another preferred class of ligands are macropolycyclic rigid ligands of the formula:

wherein m and n are 0 or integers from 1 to 2, p is an integer from 1 to 6, preferably
m and n are both 0 or both 1 (preferably both 1), or m is 0 and n is at least 1; and
p is 1; and A is a nonhydrogen moiety preferably having no aromatic content; more
particularly each A can vary independently and is preferably selected from methyl,
ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, C5-C20 alkyl, and one, but
not both, of the A moieties is benzyl, and combinations thereof.
[0032] Preferably, the macropolycyclic ligand is of the formula:

wherein "R
1" is independently selected from H, and linear or branched, substituted or unsubstituted
C1-C20 alkyl, alkylaryl, alkenyl or alkynyl; and all nitrogen atoms in the macropolycyclic
rings are co-ordinated with the transition metal.
[0033] Of the macropolycyclic ligands 5,12-dimethyl-1,5,8,12-tetraaza-bicyclo[6.6.2]hexadecane
is preferred. This ligand is most preferred as its manganese complex [Mn(Bcyclam)Cl
2] and may be synthesised according to
WO9839098.
[0034] The transition metal complex preferably is of the general formula (AI):
[M
aL
kX
n] Y
m
in which:
M represents a metal selected from Mn(II)-(III)-(IV)-(V), Cu(I)-(II)-(III), Fe (II)-(III)-(IV)-(V),
Co(I)-(II)-(III), Ti(II)-(III)-(IV), V(II)-(III)-(IV)-(V), Mo(II)-(III)-(IV)-(V)-(VI)
and W(IV)-(V)-(VI), preferably from Fe(II)-(III)-(IV)-(V);
L represents the ligand, preferably N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane,
or its protonated or deprotonated analogue;
X represents a coordinating species selected from any mono, bi or tri charged anions
and any neutral molecules able to co-ordinate the metal in a mono, bi or tridentate
manner;
Y represents any non-coordinated counter ion;
a represents an integer from 1 to 10;
k represents an integer from 1 to 10;
n represents zero or an integer from 1 to 10;
m represents zero or an integer from 1 to 20.
[0035] Several types of encapsulates can be used but the most useful are ` core in shell'
type of encapsulates typically ranging from 100 micrometer to 10 mm in size.
[0036] Various non-limiting embodiments of the invention will now be more particularly described
with reference to the following figure in which:
Figure 1 shows a perspective view of a system according to one aspect of the invention.
[0037] Referring to the figure, a system a fluid dispensing system for dispensing a laundry
gel comprising capsules containing a bleach catalyst.
[0038] The dispensing system 1 comprises a container 3 having a reservoir 5 for storing
a laundry gel 50, the reservoir 3 having all principal dimensions (height,width,depth)7,9,11
greater than the average diameter of the capsules 13 so as to retain integrity of
capsules 13 when stored within the reservoir 5.
[0039] The system comprises a dispensing outlet referred to generally at 15. This outlet
is in fluid communication with the reservoir 5 and comprises a single conduit 17.
[0040] The conduit has what is diameter 19 which is less than the average diameter of the
capsules 13. This diameter is referred to as the rupture diameter.
[0041] The dispensing outlet 15 is structured so that the largest diameter of the conduit
17 available for gel flow of the nozzle corresponds to rupture diameter 19 i.e. it
is smaller than the diameter of the capsules to be ruptured. In this example the rupture
diameter (which is an internal diameter) is 1.0 mm and this is smaller than average
outer diameter of the capsules.
[0042] The reservoir 5 is a flexible plastic and to enable the gel 50 to be forced out of
the reservoir by compression by the user by hand. The reservoir 5 may also be resilient
allowing it to revert to its original, uncompressed state following squeezing so as
to relieve pressure on its contents thereby enhancing integrity of stored capsules
13.
[0043] In use, dispensing is achieved by forcing the gel 50 to exit the reservoir 5 and
the dispensing outlet 15, where the rupture diameter 19 of the conduit 17 shears and
ruptures the capsules being forced through the conduit 17, thereby releasing the perfume
material contained within the capsule, upon gel dispensing. Hence the perfume is protected
by the capsule until dispensing when it is released for optimal sensory effect.
Laundry Gel and Capsules formulation and Preparation
[0044] The laundry gel of this embodiment is used to enable to suspend capsules or 'beads'
for uniform dosage. The gel/capsule mix has the following formulation:
[0045] The bleach catalyst-filled capsules are prepared as follows:
2g of octylsilane modified fumeed silica e.g. R805 fumed silica from Degussa. was
added to 100ml of polydimethylsiloxane polymer e.g. AK1000 PDMS oil from Wacker with
a viscosity of 1000cP and the mixture ultraturraxed for 5 minutes until the mixture
was completely homogenous. 2g of catalyst in powder form (average particle size in
the catalyst powder was 9 micrometer) was then added to this mixture and once again
the mixture ultraturraxed for 5 minutes. The catalyst particles remain dispersed and
suspended in the structure oil matrix. This oil is added to an arabic gum and gelatin
mixture.
Arabic gum and gelatin mixture
[0046] A two-polymer material complex is used, namely arabic gum and gelatin. The method
involves placing into a two litre beaker, the following:
700ml of water
180 ml gelatin aqueous solution - 2% by weight
180 ml gum arabic aqueous solution - 2 % by weight.
[0047] With the system adjusted to 40-45 degrees C and pH adjusted to 4.5.
[0048] 100g of the silicone oil mix is introduced to the arabic gum-gelatin solution optionally
with non-ionic emulsifier added to it ***PERHAPS WE CAN SAY EXPLICITLY WHAT THE ADVANTAGE
OF THIS WOULD BE: "to improve emulsification of the oil which ....."?), with constant
stirring, over a period of an hour. The resultant capsules are hardened with the addition
of 10ml of a 25 % by wt aqueous solution of glutaraldehyde, accompanied by stirring
for 1-20 hours during which the temperature is allowed to rise to the ambient room
temperature.
[0049] (The capsules can be recovered from this vehicle by decantation or filtering, accompanied
by drying in an air blast or by sifting with an adsorbent material such as starch
or diatomaceous earth, and afterwards cleaned by repeated washings in a highly evaporable
liquid medium.)
[0050] In this case, 1g of the coacervates mixture, containing the capsules of bleach catalyst
(without the capsules having been separated from the vehicle) is then mixed in 80g
laundry gel of composition described below.
Gel properties
[0051] Gel rest viscosity of 1000 Pa.s
Gel pour (shear rate 20 s
-1) viscosity of 1 Pa.s
Gel formulation |
|
LAS acid |
8.9% |
Ethoxylated alcohol (Neodol 25-9) |
6.5% |
Borax |
2.3% |
MPG |
1.5% |
Sorbitol |
2.0% |
NaOH (50%) |
1.1% |
Isodecyl alcohol (EXXAL 10) |
3.5% |
Minors |
1% |
Balance |
water |
Bleach Cataylst
[0052] There are many transition metal catalysts or ligands thereof that may be incorporated
inside the coacevate. The following are specific preferred but non-limiting transition
metal catalysts that may be used. Beside each specific catalyst in parenthesis is
a reference to a patent that describes the generic class thereof, in addition to others
found therein, that are also applicable for use with the present invention: dimethyl
3,7-dimethyl-9-oxo-2,4-bis(pyridyl)-3,7-diazabicyclo[3.3.1]nonane-1,5-dicarboxylate
(
WO0248301); 5,12-dimethyl-1,5,8,12-tetraaza-bicyclo[6.6.2]hexadecane (
WO0029537); N,N-bis(pyridin- 2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane (
WO0012667); and, (dimethyl 2,4-di-(2-pyridyl)-3-methyl-7-(N,N-dimethylaminoethylene)-3,7-diaza-bicyclo[3.3.1]nonan-9-one-1,5-dicarboxylate)
(
WO03104378).
Whilst the above will bleach in what is known as an air mode, encapsulation affords
the opportunity of incorporating a peroxyl species in liquid medium. Peroxyl species
would de-stablise the bleach catalyst however, because the catalyst is segregated
from the liquid by encapsulation the catalyst is protected. Examples of peroxyl are
sodium percarbonate and peracids, e.g.,
N,N-phthaloylaminoperoxycaproic acid PAP.
[0053] With the above arrangement, the laundry capsules can be made sufficiently strong
to withstand forces imposed by storage and transport. The extra force to rupture is
conveniently provided precisely at the time of dispensing, by means of compression
at (or in) an outlet conduit so that the active material is released only when required.
This allows fine tuning of the capsule properties to enhance strength without risking
poor delivery of bleach and poor bleach performance due to lack of capsule rupture.
1. A dispensing system comprising a dispensing device and a laundry fluid, the laundry
fluid comprising capsules containing a bleach catalyst and contained in the dispensing
device; the dispensing device comprising:
a. a reservoir containing the laundry fluid, each of the principal dimensions of the
reservoir being greater than the average diameter of the capsule,
b. a dispensing outlet in fluid communication with the reservoir and having, in at
least one part, a rupture diameter which is less than the average diameter of the
capsules;
the laundry fluid being dispensed from the reservoir by forcing the laundry fluid
to egress via the dispensing outlet, and the passage of capsules through the dispensing
outlet ruptures the capsules, thereby releasing the bleach catalyst as the laundry
fluid is dispensed.
2. A dispensing system according to claim 1 the fluid being a liquid, gel or paste.
3. A dispensing system according to any preceding claim wherein the dispensing outlet
comprises one or more conduits.
4. A dispensing system according to any preceding claim wherein the diameter of the oulet
tapers in the direction of the egress of fluid, terminating in the rupture diameter.
5. A dispensing system according to any preceding claim wherein the dispensing outlet
comprises one or more sections of constant diameter.
6. A dispensing system according to any preceding claim wherein the dispensing outlet
comprises multiple, successive conduits having rupture diameter.
7. A dispensing system according to any preceding claim wherein the capsules are 'core
in shell' type.
8. A dispensing system according to any preceding claim wherein the capsules range from
100 micrometer to 10 mm in diameter.
9. A method of dispensing a laundry fluid comprising capsules containing a bleach catalyst,
by employing the dispensing device of claim 1 to dispense the fluid and released bleach
catalyst e.g. into a washing machine draw, dosing device.
10. A method of pretreating a fabric with a laundry bleach catalyst, by employing the
dispensing device of claim 1 to dispense the fluid and released bleach catalyst directly
on to the fabric.
11. A method of directly bleaching a fabric, by employing the dispensing device of claim
1 to dispense the fluid and released bleach catalyst directly on to the fabric.
1. Spendersystem, das eine Spendervorrichtung und ein Wäschefluid umfasst, wobei das
Wäschefluid Kapseln enthält, die einen Bleichungskatalysator enthalten und in der
Spendervorrichtung enthalten sind; wobei die Spendervorrichtung umfasst:
a. einen Vorratsbehälter, der das Wäschefluid enthält, wobei jede der Hauptabmessungen
des Vorratsbehälters größer ist als der durchschnittliche Durchmesser der Kapseln,
b. einen Spenderauslass, der mit dem Vorratsbehälter in einer Fluidkommunikation steht
und wenigstens in einem Teil einen Aufbrechdurchmesser besitzt, der kleiner ist als
der durchschnittliche Durchmesser der Kapseln;
wobei das Wäschefluid von dem Vorratsbehälter dadurch ausgegeben wird, dass das Wäschefluid
dazu gezwungen wird, durch den Spenderauslass auszutreten, und der Durchgang von Kapseln
durch den Spenderauslass die Kapseln aufbricht, um so den Bleichungskatalysator freizugeben,
wenn das Wäschefluid ausgegeben wird.
2. Spendersystem nach Anspruch 1, wobei das Fluid eine Flüssigkeit, ein Gel oder eine
Paste ist.
3. Spendersystem nach einem vorhergehenden Anspruch, wobei der Spenderauslass eine oder
mehrere Leitungen umfasst.
4. Spendersystem nach einem vorhergehenden Anspruch, wobei sich der Durchmesser des Auslasses
in Richtung des Fluidaustritts konisch verjüngt und in dem Aufbrechdurchmesser endet.
5. Spendersystem nach einem vorhergehenden Anspruch, wobei der Spenderauslass einen oder
mehrere Querschnitte mit konstantem Durchmesser aufweist.
6. Spendersystem nach einem vorhergehenden Anspruch, wobei der Spenderauslass mehrere
aufeinander folgende Leitungen mit dem Aufbrechdurchmesser umfasst.
7. Spendersystem nach einem vorhergehenden Anspruch, wobei die Kapseln vom Typ "Kern
in der Schale" sind.
8. Spendersystem nach einem vorhergehenden Anspruch, wobei die Kapseln einen Durchmesser
im Bereich von 100 Mikrometer bis 10 mm haben.
9. Verfahren zum Spenden eines Wäschefluids, das Kapseln aufweist, die einen Bleichungskatalysator
enthalten, indem die Spendervorrichtung nach Anspruch 1 verwendet wird, um das Fluid
und den freigesetzten Bleichungskatalysator z. B. in eine Waschmaschinenschubladen-Dosiervorrichtung
auszugeben.
10. Verfahren zum Vorbehandeln eines Stoffs mit einem Wäsche-Bleichungskatalysator durch
Verwenden der Spendervorrichtung nach Anspruch 1, um das Fluid und den freigesetzten
Bleichungskatalysator direkt auf den Stoff auszugeben.
11. Verfahren zum direkten Bleichen eines Stoffs durch Verwenden der Spendervorrichtung
nach Anspruch 1, um das Fluid und den freigesetzten Bleichungskatalysator direkt auf
den Stoff auszugeben.
1. Système de distribution comprenant un dispositif de distribution et un fluide de blanchissage,
le fluide de blanchissage comprenant des capsules contenant un catalyseur d'agent
de blanchiment et contenu dans le dispositif de distribution ; le dispositif de distribution
comprenant :
a. un réservoir contenant le fluide de blanchissage, chacune des dimensions principales
du réservoir étant supérieure au diamètre moyen des capsules,
b. une sortie de distribution en communication de fluide avec le réservoir et ayant,
dans au moins une partie, un diamètre de rupture qui est inférieur au diamètre moyen
des capsules ;
le fluide de blanchissage étant distribué à partir du réservoir en forçant le fluide
de blanchissage à sortir via la sortie de distribution, et le passage des capsules
par la sortie de distribution rompt les capsules, libérant ainsi le catalyseur d'agent
de blanchiment lorsque le fluide de blanchissage est distribué.
2. Système de distribution selon la revendication 1, le fluide étant un liquide, un gel
ou une pâte.
3. Système de distribution selon l'une quelconque des revendications précédentes, dans
lequel la sortie de distribution comprend un ou plusieurs conduits.
4. Système de distribution selon l'une quelconque des revendications précédentes, dans
lequel le diamètre de la sortie se rétrécit progressivement dans la direction de la
sortie de fluide, se terminant par le diamètre de rupture.
5. Système de distribution selon l'une quelconque des revendications précédentes, dans
lequel la sortie de distribution comprend une ou plusieurs sections de diamètre constant.
6. Système de distribution selon l'une quelconque des revendications précédentes, dans
lequel la sortie de distribution comprend plusieurs conduits successifs ayant un diamètre
de rupture.
7. Système de distribution selon l'une quelconque des revendications précédentes, dans
lequel les capsules sont du type "à coeur".
8. Système de distribution selon l'une quelconque des revendications précédentes, dans
lequel les capsules ont un diamètre de l'ordre de 100 micromètres à 10 mm.
9. Procédé pour distribuer un fluide de blanchissage comprenant des capsules contenant
un catalyseur d'agent de blanchiment, en utilisant le dispositif de distribution selon
la revendication 1 pour distribuer le fluide et le catalyseur d'agent de blanchiment
libéré par exemple dans un dispositif de dosage d'aspiration de machine à laver.
10. Procédé pour prétraiter un tissu avec un catalyseur d'agent de blanchiment, en utilisant
le dispositif de distribution selon la revendication 1 pour distribuer le fluide et
le catalyseur d'agent de blanchiment libéré directement sur le tissu.
11. Procédé pour blanchir directement un tissu, en utilisant le dispositif de distribution
selon la revendication 1, pour distribuer le fluide et le catalyseur d'agent de blanchiment
libéré directement sur le tissu.