WO1999047430A1

WO1999047430A1 - Container for aqueous hypochlorite-basedbleaching agents

Info

Publication number: WO1999047430A1
Application number: PCT/EP1999/001409
Authority: WO
Inventors: Mercedes Mendoza Cruz; Jaume Josa Pons; Jorge Bardolet Franzi
Original assignee: Henkel Kommanditgesellschaft Auf Aktien
Priority date: 1998-03-13
Filing date: 1999-03-04
Publication date: 1999-09-23
Also published as: HUP0101050A3; JP2002506778A; EP1062164B1; SK13462000A3; DE59906357D1; DE19810886A1; ATE245582T1; HUP0101050A2; EP1062164A1; PL342841A1; CZ20003341A3; ES2205803T3

Abstract

The invention relates to a container for aqueous hypochlorite-based bleaching agents. Said container consists of a hollow plastic body with an outlet opening and a sealing lid and is characterised in that the sealing lid consists at least in part of a plastic which contains one or more encapsulated fragrances.

Description

Container for aqueous bleaching agents based on hypochlorite

Field of the Invention

The invention is in the field of packaging for aqueous hypochlorite bleaches, consisting of a hollow plastic body with a pouring opening and a closure lid, the latter releasing fragrances in a controlled manner into the head space of the plastic container.

State of the art

In the Mediterranean countries, but also in the United States, cold washing of textiles continues to dominate. This means that conventional bleaching agents, such as perborates or percarbonates, are rarely used, since they do not yet show any particular activity at temperatures around 20 ° C. Liquid wash bleaches are usually added to the wash liquor, which are generally surfactant preparations with a content of up to 10% by weight hypochlorite; comparable agents are also used to clean and disinfect hard surfaces. The hypochlorite bleaches have an unpleasant pungent chlorine smell even when diluted heavily, which is why fragrances are added to them. A sufficiently large number of perfume oils are now known from the prior art, which are hypochlorite-stable even over a long period of time and are not oxidized, but substances with a citrus aroma are not included. However, since this smell is associated with freshness and cleanliness by the consumer, there is a desire in the market to offer hypochlorite bleaches with a citrus scent which, despite the known chemical instability of the fragrances, are sufficiently stable in storage, i.e. have a citrus aroma even after weeks and reliably mask the chlorine smell . The object of the invention was to provide the simplest possible technical solution to the problem described. Description of the invention

The invention relates to a container for aqueous bleaching agents based on hypochlorite, consisting of a hollow plastic body with a pouring opening, preferably a bottle, and a closure lid, which is characterized in that the closure lid consists at least partially of a plastic which contains one or more fragrances encapsulated.

The hollow plastic body contains the aqueous bleaching agent preferably only in such quantities that an air-filled intermediate space ("head space") remains between the filling level of the bleaching agent and the closure, which preferably has a volume of at least 10 ml and in particular 10 to 25 ml According to the invention, the closure cap releases the fragrances into the head space with a delay (“controlled release”). This has the effect that a sufficiently large amount of the fragrance is always present when the container is opened and when it is poured out. Although the fragrance released into the head space is oxidized more or less quickly depending on the chemical nature, the controlled release system guarantees that new fragrance is continuously released over weeks.

Plastic materials

In the plastics from which hollow bodies, i.e. preferably the bottle, and the closure cap, there are usually polyolefins and preferably polypropylene or copolymers of propylene and ethylene. Although in principle the hollow body can of course also contain encapsulated fragrances, it is preferred for cost reasons only to produce the closure cover from this material. Polypropylene and molded articles made therefrom, which contain a wide variety of fragrances encapsulated, are available for example from Lucta, S.A., Barcelona / ES. The proportion of encapsulated fragrances in the plastic can be 0.01 to 2% by weight and is preferably 0.1 to 1% by weight.

Fragrances

Although the fragrances are preferably those which are not stable in the presence of hypochlorite, especially as citrus flavors, the selection of the fragrance is not critical per se, since the invention is fundamentally based on any type of perfume oil, natural or synthetic, and essential oils can be run. Perfume oils include mixtures of natural and synthetic fragrances. Natural fragrances are extracts of flowers (lily, lavender, roses, jasmine, neroli, ylang-ylang), stems and leaves (geranium, patchouli, petitgrain), fruits (anise, coriander, caraway, juniper), fruit peel (bergamot, lemon, Oranges), roots (mace, angelica, celery, cardamom, costus, iris, calmus), wood (pine, sandal, guaiac, cedar, rosewood), herbs and grasses (tarragon, lemongrass, sage, thyme), Needles and twigs (spruce, fir, pine, mountain pine), resins and balms (galbanum, elemi, benzoin, myrrh, olibanum, opoponax). Animal raw materials, such as civet and castoreum, are also suitable. Typical synthetic fragrance compounds are products of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type. Fragrance compounds of the ester type are, for example, benzyl acetate, phenoxyethyl isobutyrate, p-tert-butylcyclohexyl acetate, linalyl acetate, dimethylbenzylcarbinylacetate, phenylethyl acetate, linalyl benzoate, benzyl formate, ethyl methyl phenyl glycinate, allyl cyclohexyl propylate pylate allylpropionate, The ethers include, for example, benzyl ethyl ether, the aldehydes include, for example, the linear alkanals having 8 to 18 carbon atoms, citral, citronellal, citronellyloxyacetaldehyde, cyclamen aldehyde, hydroxycitronellal, lilial and bourgeonal, and the ketones include, for example, the jonones, α-isomethiionone and methyl cedryl ketone , the alcohols anethole, citronellol, eugenol, isoeugenol, geraniol, linalool, phenylethyl alcohol and terpineol, the hydrocarbons mainly include the tephenes and balsams. However, preference is given to using mixtures of different fragrances which together produce an appealing fragrance. Essential oils of lower volatility, which are mostly used as aroma components, are also suitable as perfume oils, e.g. sage oil, family oil, clove oil, lemon balm oil, mint oil, cinnamon leaf oil, linden blossom oil, juniper berry oil, vetiver oil, oliban oil, galbanum oil, labolanum oil and lavandin. Bergamot oil, dihydro myrcenol, lilial, lyral, citronellol, phenylethyl alcohol, α-hexyl cinnamaldehyde, geraniol, benzylacetone, cyclamen aldehyde, linalool, boisambrene forte, ambroxan, indole, hedione, sandeiice, lemon oil, mandarin oil, cycloalene oil, allyl oil oil, orange oil oil, orange oil oil, orange oil oil, orange oil oil , Muscatel sage oil, ß-damascone, geranium oil bourbon, cyclohexyl salicylate, Vertofix Coeur, Iso-E-Super, Fixolide NP, evernyl, iraldein gamma, phenylacetic acid, geranyl acetate, benzyl acetate, rose oxide, romilllate, irotyl and floramate alone or in mixtures, used.

Bleach

The bleaches contained in the containers for the purposes of the invention usually contain sodium hypochlorite in amounts of 1 to 10, preferably 5 to 8 and in particular 6 to 7% by weight. Examples of surfactants which can be present in amounts of 0.1 to 10% by weight and preferably 1 to 5% by weight are fatty alcohol ether sulfates, fatty alcohol ethoxylates, oxo alcohol ethoxylates - the latter two with a conventionally broad and narrow homolog distribution - alkyl polyglucosides, fatty acid N- alkyl glucamides, amine oxides and alkyl phosphates. In another implementation In the invention, the bleaching agents can contain electrolytes. Suitable electrolyte salts are alkali or alkaline earth salts of mineral acids and mixtures thereof, which are known in principle as auxiliaries for adjusting the viscosity of aqueous surfactant solutions. Sodium chloride or magnesium sulfate is preferably used. The amount of salts used can be 0.1 to 2% by weight. In addition, the agents can contain lower alcohols such as ethanol or isopropyl alcohol, hypochlorite-stable fragrances (internal perfuming), optical brighteners, antioxidants, dyes and pigments in a total amount of 0.01 to 0.5% by weight, based on the agents. The fragrances known to be hypochlorite-resistant include, for example, monocyclic and bicyclic mono-phene alcohols and their esters with acetic or propionic acid (for example isoborneal, dihydro-phene oil, isobornyl acetate, dihydro-phyne-acetate). The optical brighteners can be, for example, the potassium salt of 4,4'-bis (1, 2,3-triazolyl) - (2 -) - stilbin-2,2-sulfonic acid, which is sold under the brand name Phorwite® BHC 766 or Tinopal CBS-X (Ciba) is driven. Examples of suitable ones

Antioxidants are the di-tert-butylated hydroxytoluene (BHT), di-tert.-butylated hydroxyanisole (BHA), tocopherol (vitamin E), ascorbic acid and ascorbic acid palmitate, optionally in combination with citric acid. Finally, yellow Solar Yellow BG 300 (Sandoz) or preferably red Rojo Basazol® can be used as color pigments. The preparation is made by stirring. If necessary, the product obtained can be decanted or filtered to remove foreign bodies and / or agglomerates.

Examples

Polypropylene bottles with a capacity of 1 l were filled with a 4% by weight sodium hypochlorite solution, to which 0.01% by weight citrus or rose aroma had been added. A head space of 15 ml remained between the fill level and the closure. The bottles were closed (V1 N 2) with polypropylene lids (Νovolen 2300L, BASF, 3.5 g, diameter 38 mm) or (1, 2) the same lids which Contained citrus or rose flavor encapsulated (additional amount: 1% by weight, PPG Luctaplast Accurel Vercitron or Terciopelo, Lucta, SA, Barcelona / ES). The bottles were stored at 40 ° C for a period of 12 weeks and the scent impression was regularly assessed by a panel consisting of 10 trained people. Here mean: (+++) unchanged fragrance impression compared to the basic formulation, (++) slightly lower fragrance impression, (+) significantly lower fragrance impression, (0) no more perfuming noticeable. The results are summarized in Table 1. Examples 1 and 2 are according to the invention, examples V1 and V2 serve for comparison.

Table 1: Fragrance impression

For example, cap material fragrance impression immediately 1 w 2w 4w 8w 12w

V1 polypropylene, without fragrance +++ ++ + + + / 0 0

V2 polypropylene, without fragrance +++ ++ + + + / 0 0

1 polypropylene + 1% Vercitron +++ +++ +++ +++ ++ ++

2 polypropylene + 1% Terciopelo +++ +++ +++ +++ ++ ++

Claims

claims

1. Container for aqueous bleaching agents based on hypochlorite, consisting of a plastic hollow body with a pouring opening and a closure lid, characterized in that the closure lid consists at least partially of a plastic which contains one or more fragrances encapsulated.

2. Container according to claim 1, characterized in that the plastic hollow body is a bottle.

3. Container according to claims 1 and 2, characterized in that the plastic hollow body contains the aqueous bleaching agent only in such amounts that an air-filled space ("head space") remains between the fill level of the bleaching agent and the closure.

4. Container according to claim 3, characterized in that the head space is a volume of at least 10 ml.

5. Container according to claims 1 to 4, characterized in that the closure lid releases the fragrances in the head space with a delay.

6. Container according to claims 1 to 5, characterized in that the hollow body and / or the closure consists of a polyolefin.

7. Container according to claims 1 to 6, characterized in that the proportion of the encapsulated fragrances in the plastic from which the closure lid is made is 0.01 to 2 wt .-%.

8. Container according to claims 1 to 7, characterized in that the closure lid contains encapsulated natural fragrances, which are selected from the group consisting of extracts of the following substances: lily, lavender, roses, jasmine, neroli, ylang- Ylang, Geranium, Patchouli, Petitgrain, Anise, Coriander, Caraway, Juniper, Bergamot, Lemon, Oranges, Macis, Angelica, Celery, Cardamom, Costus, Iris, Calmus, Pinewood, Sandalwood, Guaiac wood, Cedarwood, Rosewood, Tarragon, Lemongrass, sage, thyme, spruce needles, pine needles, pine needles, mountain pine needles, galbanum, elemi, benzoin, myrrh, olibanum and opoponax.

9. Container according to claims 1 to 7, characterized in that the sealing cap contains encapsulated synthetic fragrances which are selected from the group consisting of benzyl acetate, phenoxyethyl isobutyrate, p-tert-butylcyclohexyl acetate, linalyl acetate, dimethyl benzylcarbinylacetate, phenylethyl acetate, linalyl benzoate, benzyl formate, ethyl methyl phenyl glycinate, allyl cyclohexyl propionate, styrallyl propionate, benzyl salicylate, citral, citronellal, citronellyl oxyacetaldehyde, cyclamenaldehyde, lilyledonyl meonylalonyl meonylalonyl meonylalonyl meonylalonyl meonylalonyl meonylalonylolonyl meonylalonyl meonylalonyl meonylalonyl meonylalonyl meonyl, methyaldonyl isolonyl, methyaldonylalonyl, methyaldonylalonomethyl, Eugenol, isoeugenol, geraniol, linalool, phenylethyl alcohol and Teφineol.

10. Container according to claims 1 to 7, characterized in that the closure lid contains encapsulated essential oils which are selected from the group consisting of sage oil, chamomile oil, clove oil, lemon balm oil, mint oil, cinnamon leaf oil, linden tree oil, juniper berry oil, Vetiver oil, oliban oil, galbanum oil, labolanum oil, lavandin oil and bergamot oil.