HEAVY-DUTY LAUNDRY DETERGENT WIPE WITH TEMPERATURE DEPENDENT ACTIVATION OF THE WASHING ACTIVE SUBSTANCES

Abstract

The present invention discloses a method for manufacturing a laundry detergent, characterized by the following steps: (a) incorporating oxygen donors and their activators in a waxy matrix which is surrounded by an ionic polymer layer for providing a capsule system, (b) incorporating the capsule system into a liquid washing detergent. Furthermore, a liquid washing detergent is disclosed, characterized by a capsule system comprising a waxy matrix which is surrounded by an ionic polymer layer and into which oxygen donors and their activators are incorporated. Furthermore, a method for manufacturing a heavy-duty laundry detergent wipe is disclosed, characterized by the following steps: (a) incorporating oxygen donors and their activators in a waxy matrix which is surrounded by an ionic polymer layer for providing a capsule system, (b) incorporating the capsule system into a dispersion comprising a liquid washing detergent and a water insoluble functional additive, (c) applying the dispersion provided with the capsule system to a carrier material which is solid at ambient temperature. Furthermore, a method for manufacturing a heavy-duty laundry detergent wipe is disclosed, characterized by the following steps: (a) incorporating oxygen donors and their activators in a waxy matrix which is surrounded by an ionic polymer layer for providing a capsule system, (b) incorporating the capsule system into a carrier material which is solid at ambient temperature, (c) applying a dispersion comprising a liquid washing detergent and a water insoluble functional additive to the carrier material provided with the capsule system. Furthermore, a heavy-duty laundry detergent wipe is disclosed, comprising a carrier material which is solid at ambient temperature and a dispersion comprising a liquid washing detergent and a water insoluble functional additive and which has been applied to the carrier material, characterized in that the heavy-duty detergent wipe further comprises a capsule system which has been incorporated into the dispersion or directly into the carrier material and which comprises oxygen donors and their activators incorporated into a waxy matrix surrounded by an ionic polymer layer.

Claims

1. A method for manufacturing a laundry detergent, comprising the steps of: (a) providing a capsule detergent system by incorporating oxygen donors and their activators in a waxy matrix which matrix is surrounded by an ionic polymer layer; and (b) incorporating said detergent system into a liquid washing detergent.

2. A liquid washing detergent, which is a capsule detergent system comprising a waxy matrix which is surrounded by an ionic polymer layer and into which matrix oxygen donors and their activators are incorporated.

3. A method for manufacturing a heavy-duty laundry detergent wipe, comprising the steps of: (a) incorporating oxygen donors and their activators in a waxy matrix which is surrounded by an ionic polymer layer for providing a capsule detergent system; (b) incorporating the capsule detergent system into a dispersion comprising a liquid washing detergent and a water insoluble functional additive; (c) applying the said dispersion provided with the capsule detergent system to a carrier material which is solid at ambient temperature.

4. A method for manufacturing a heavy-duty laundry detergent wipe, comprising the steps of: (a) incorporating oxygen donors and their activators in a waxy matrix which is surrounded by an ionic polymer layer for providing a capsule detergent system, (b) incorporating the said capsule detergent system into a carrier material which is solid at ambient temperature, (c) applying a dispersion comprising a liquid washing detergent and a water insoluble functional additive to the said carrier material provided with the said capsule detergent system.

5. A heavy-duty laundry detergent wipe, comprising a carrier material which is solid at ambient temperature and a dispersion comprising a liquid washing detergent and a water insoluble functional and which has been applied to said carrier material, wherein the heavy-duty detergent wipe further comprises a capsule detergent system which has been incorporated into the dispersion or directly into the carrier material and which comprises oxygen donors and their activators incorporated into a waxy matrix surrounded by an ionic polymer layer.

6. The heavy-duty laundry detergent wipe of claim 5, wherein the water insoluble functional additive comprises a zeolite and/or a phyllosilicate.

7. The heavy-duty laundry detergent wipe according to of claim 5, wherein the liquid washing detergent of the dispersion has a viscosity greater than 500 mPas.

8. The heavy-duty laundry detergent wipe of claim 5, wherein the dispersion is statistically fixed to the carrier substrate.

9. The heavy-duty laundry detergent wipe of claim 5, further comprising any known components of a heavy-duty laundry detergent.

Description

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Bleaching agents (oxygen donors and their activators) commonly used in laundry detergents are: [0022] perborates [0023] hydrogen peroxide [0024] phthalimido-peroxo-caproic acid [0025] hypochloride [0026] TAED (tetraacetylethylenediamine) [0027] chlorate [0028] permanganate [0029] percarbonate

[0030] Enzymes commonly used in laundry detergents are: [0031] protease [0032] cellulase [0033] lipase [0034] amylase

[0035] FIG. 1 shows thenot controllablerelease over time of the washing active substances of single dose laundry detergents according to the prior art: (1) shows the curve for liquid washing detergents filled in small polymer pouches, (2) shows the curve for laundry detergents mixed with fat alcohols and (3) shows the curve for the laundry detergent wipe according to DE 10 2010 060 126 A1. As mentioned above, incompatible substances such as enzymes and bleaching agents (oxygen donors and their activators) cannot be combined in known laundry detergents.

[0036] Surprisingly, this problem could be solved according to the present invention by incorporating a bleaching agent (oxygen donors and their activators) into a waxy matrix which is surrounded by an ionic polymer layer such that the oxygen donors and their activastors are encapsulated by the waxy matrix and the polymer layer as can be seen in FIG. 2. This capsule system is then incorporated into a liquid washing detergent, for example, by stirring.

[0037] In the case of a heavy duty laundry detergent wipe the liquid washing detergent provided with the capsule system is used in a dispersion which (as disclosed in DE 10 2013 014 015) is applied to the carrier substratethe incorporation of the capsule system in the liquid washing detergent and the dispersion, resp., is thus carried out before applying the dispersion to the carrier substrate. On the other hand, the capsule system can be incorporated directly into the carrier substrate by way of a pre-treatment (i.e., before the dispersion is applied) which can be carried out using a dip tank or a spraying process.

[0038] The waxy matrix has a particle size of up to maximal 100 m, wherein the particle size is proportional to the period of the emission phase of the active oxygen donors and their activators (melting process). The activation of the oxygen donors and their activators can be controlled by the selection of the matrix material. The use of the outer ionic polymer structure permits to adjust the adhesion and cohesion, resp., of the waxy matrix to the surface of the carrier substrate.

[0039] In this way it has been possible for the first time to provide a laundry detergent application form permitting the effective use of enzymes and bleaching agents (oxygen donors and their activators). At the beginning of the washing cycle the enzymes are released directly which demonstrably deploy their performance from 30 C. and, thus, are available at the beginning of the washing and cleaning, resp., cycle. When a washing program with at least 40 C. is used, the outer polymer layer of the waxy matrix breaks and melts, resp., during further heating. The oxygen donors and their activators are thus activated at a later point of time after the enzymes have already deployed their performance and are possibly no longer available due to washing active depletion or program related pumping down (for example, after the pre-washing cycle). This progress over time is shown as curve (4) in FIG. 1. The functionality of the temperature dependent activation of the washing active substances (here particularly enzymes and bleaching agents and their oxygen donors and activators, resp.) of a laundry detergent and a heavy-duty detergent wipe, resp., is thus established by the following steps: [0040] a) release and activation of the enzymes by dissolution in water from approx. 30 C. [0041] b) dissolution of the polymer layer and the waxy matrix depending on the selected educts from 40 C. [0042] c) activation of the oxygen donors and their activators

[0043] Useful for the waxy matrix described here are: [0044] bees wax [0045] shea butter [0046] rice bran wax [0047] corn starch [0048] potato starch [0049] fat alcohols with medium chain length

[0050] Useful for manufacturing the waxy matrix are: [0051] linoleic acid [0052] hydroxetyl behenamidopropyl diamonium chloride [0053] hydrolized starch [0054] methylacetate [0055] methyldiisopropylpropionamide [0056] cyclohexanecarboxamide [0057] hydrolized starch octenylsuccinate [0058] PVM/MA copolymer acrylates/C12-22 alkylmethaceylate copolymer

[0059] Due to the fact that a controlled temperature dependent dissolution of the ionic polymer layer and waxy matrix with the oxygen donors and their activators has been achieved for the first time, a time dependent control of the activation of both substance classes during a single washing process can be realized. For the application areas the following basic formulations for a heavy-duty laundry detergent wipe result from the present invention:

TABLE-US-00001 Heavy duty laundry detergent wipe (universal): anionic tensides nonionic tensides phosphonates/complex builders C10-C18 fatty acid salts optical brighteners enzymes builders (polycarboxylates, zeolites, phyllosilicates) stabilizers (propylene glycol, glycerin, borax, inulin) scents preservatives soil-release polymer pH regulators

TABLE-US-00002 Color laundry detergent wipe (color): anionic tensides nonionic tensides phosphonates/complex builders C10-C18 fatty acid salts colorants color transfer protection hydrotropes (sodium cumenesulfonate) enzymes builders (polycarboxylates, zeolites, phyllosilicates) stabilizers (propylene glycol, glycerin, borax, inulin) scents preservatives soil-release polymer pH regulators

TABLE-US-00003 Black laundry detergent wipe (black): anionic tensides nonionic tensides phosphonates/complex builders C10-C18 fatty acid salts colorants color transfer protection enzymes builders (polycarboxylates, zeolites, phyllosilicates) stabilizers (propylene glycol, glycerin, borax, inulin) opacifiers scents preservatives pH regulators

TABLE-US-00004 White laundry detergent wipe (white): anionic tensides nonionic tensides C10-C18 fatty acid salts optical brighteners soil-release polymer color transfer protection enzymes builders (polycarboxylates, zeolites, phyllosilicates) stabilizers (propylene glycol, glycerin, borax, inulin) colorants opacifiers scents preservatives pH regulators

TABLE-US-00005 Fine laundry detergent wipe: anionic tensides nonionic tensides C10-C18 fatty acid salts phosphonates/complex builders color transfer protection enzymes builders (polycarboxylates, zeolites, phyllosilicates) stabilizers (propylene glycol, glycerin, borax, inulin) scents defoamers preservatives pH regulators

TABLE-US-00006 Wool laundry detergent wipe: anionic tensides nonionic tensides amphoteric tensides C10-C18 fatty acid salts phosphonates/complex builders color transfer protection builders (polycarboxylates, zeolites, phyllosilicates) scents preservatives opacifiers conditioners pH regulators

[0060] The water insoluble functional additive of the heavy-duty laundry detergent dispersion can comprise a zeolite and/or a phyllosilicate. The liquid washing detergent of the dispersion can have a viscosity of larger than 500 mPas. The dispersion is statistically fixed to the carrier substrate. Furthermore, it can comprise all known components of a heavy-duty laundry detergent.