MXPA99004213A - Soluble sachet for water-based compositions - Google Patents

Abstract

Water-soluble sachet suitable for packaging a water-based composition the sachet comprising a water-soluble film which is formed from an aqueous solution or dispersion of a water-soluble organic polymer in admixture with an aqueous dispersion of wax(es).

Description

SOLUBLE PERFUMER FOR WATER BASED COMPOSITIONS DESCRIPTION OF THE INVENTION The present invention relates to a water-soluble perfume or sachet. { preferably cold) containing a water base composition 3 packaged therein, such as an agrochemical composition based on water, for the care and washing of the clothes, coloring / insecticide material, cleaner of its industrial fiber or of the home, or a public health composition, Water-soluble perfumers have utility for packaging materials n J5 broad range, usually the formulated compositions, and particularly formulated compositions that are fl) dangerous (or at any rate unpleasant) for individuals with whom they come in contact or are dangerous or harmful to the environment. Examples important include igroqmmica compositions (eg insecticides, herbicides, pesticides and fungicides), care products and laundry (eg detergents, fabric softeners and bleaches), coloring materials, insecticides, industrial or household cleaners, and products for REF .: 30124 public health. The use of water-soluble perfuming agents for formulated compositions of certain packages also provides a convenient way of adding u to moderate dosage of the formulation, by subsequent dilution with water in order to provide the desired final concentration of the diluted formulation. The agrochemical compositions can be packaged, for example, in water-soluble scented perfumers in which the form can be handled safely. The water soluble fragrance can subsequently be added to a spray tank containing water, and after dissolving the fragrance / the diluted formulation can be sprayed by the user, for example by a farmer. Complete dissolving or disintegration of the perfumer is normally necessary to avoid obstacles during the operation of the spray. Why is it usually desirable for the water-soluble film to be cold since it could be hardly used in large-scale hot water used outdoors? The soluble media in cold water is soluble in water at temperatures < of 35 ° c, and generally between 5 and 35 ° c. Polyvinyl alcohol is widely used for the preparation of the water soluble film for the production of perfuming agents for packaging materials of the type described above. { such as the agrschemists); Polyethylene oxide and methyl cellulose are also widely used (see for example WO 93/22215). Such polymers are usually used in connection with a plasticizer to achieve the desired level of flexibility in the perfuming film. Other types of polymers that are used to provide films for the inclusion of the perfuming agent include neutralized acid groups which can produce acrylic polymers. { particularly carboxyl groups), the most recent providing the water solubility required for acrylic films derived from polymers, 11 packed in a perfumer is often in the form of a water-based composition, for which it means that active material (s)) of the composition, optionally With Other components which may also be present in the composition, is carried in a liquid medium in the main component of which is water. Preferably and at least 60% by weight of the medium of the liquid carrier is water, preferably at least? % in weigh . { the non-aqueous component of the medium of the liquid carrier, if any, is usually one or more organic liquids). The aqueous composition may for example be in the form of an aqueous solution or an aqueous dispersion (such as a concentrated suspension or an oil-in-water emulsion) of the component. { s) of it. For example, a type of fragrance for washing care is proposed in European Patent Application EP-A-0 079 248, wherein a water soluble film is coated with a protective layer of the inert particulate plastic materials - protective layer, when inside the perfumer protects the water soluble film to bond it by aqueous means, In International Patent Application 097/27743 a water-soluble perfume is provided for agrochemical compositions based on packaged aqueous media. Instead of a protection layer i te * an agent is provided to minimize the loss of water as part of the composition. While it is a primary objective that the water base composition of the perfumer should be releasable in the selected aqueous environment at the appropriate time and place, by virtue of the film. { §) perfumer properly dissolved and / or disintegrated in g (for the purpose of this specification / "soluble water" includes "disintegrable in water"). In this a problem of the water-based composition of the perfuming can under certain circumstances and by some compositions that penetrate the former wall of the perfuming to be used / for example during storage. Tai permeation of the water of the packaged composition is clearly very undesirable and can for example cause the perfumer to dissolve and adhere to the outer packaging as a result of this it reduces the life of the product in the packaging shelf. We have now discovered how to overcome the problem of permeation when the compositions are packaged to aqueous bases in water-soluble perfumers. According to the present invention there is provided an appropriate water-soluble fragrance for packaging a water-based composition, the fragrance has a film construction comprising a water-soluble film / binder material and which comprises a polymer (s). ) organic soluble in water, and which incorporated film construction in favor of a cer (es) dispersibie in water derived from an aqueous dispersion of the cer (es) used in the formation of the water soluble film »E an alternative modality of The present invention provides the combination of a water-soluble perfumer and a water-based composition packed thereon. The perfumer has a film construction comprising a water-soluble film, the adherent material which comprises an organic polymer (s) soluble in water, and which film construction incorporates a wax (s) dispersible in water derived from an aqueous dispersion The wax (s) used in the formation of the water-soluble film is additionally provided herein according to the invention a water-soluble perfumer, in fully or partially sealed form / for packaging a water-based composition, said perfumer has a film construction as defined in the previous paragraph. In addition, according to the invention, there is provided a method of manufacturing a perfuming machine as defined in FIG. above which method comprises preparing a water-soluble film of an aqueous solution or dispersion of a water-soluble organic polymer (s) in admixture with an aqueous dispersion of a wax (s) and forming a perfumer whose film construction comprises said film Water-soluble, It has thus been found that the presence of the wax component in the construction of water-soluble peíícuia of the perfumor, which has been introduced as defined above, significantly reduces or prevents the permeation of the aqueous contents of the perfuming agent. It is believed that the wax migrates to the surface of the film, thus providing a layer of wax which reduces or prevents water permeation of the aqueous formulation for the film. However, we do not want to limit this possible explanation "- The term" wax "is used to classify generically many materials that are naturally or synthetically, and petroleum, mineral / vegetable / or animal origin» They are normally solid at room temperature with a relatively low melting point, and capable of softening when heated and hardens when cooled (for example it has a melting point of 5p ° c, and usually within the range of 50 to 90 ° C. They themselves are insoluble in water. Waxes obtained from natural sources include animal waxes / vegetable waxes, mineral waxes and oil waxes. Examples of such materials, which can often be used in combination, include petroleum waxes such as paraffin waxes of various melting points and grades and microcrystalline wax; animal waxes such as beeswax; vegetable waxes such as wax. carnuba and candelilla wax / and mineral waxes such as mastone wax * Wax. { s) can be used in the invention which must be dispersible in water, ie capable of being dispersed in water using for example surfactant and high energy stirring. Such aqueous dispersions of waxes are commercially available, and are known as aqueous wax emulsions. Particularly preferred waxes are paraffin waxes. { hydrocarbon waxes or hydrocarbon grades) and carnuba wax (they are often used in combination). Thus a commercially available aqueous wax emulsion of this type is "Micheíman" ML270-E which is an aqueous wax emulsion (average particle size of about 1 um) of a mixture of paraffin and carnuba waxes, often released to approximately 40% weight / weight of solids? The wax emulsion can be diluted with water although it is necessary before it is used in the invention. The aqueous wax emulsion is employed as a means to incorporate the wax (s) into the water-soluble film construction of the perfumer.

Preferably this is effected by mixing an aqueous solution or preferably latex dispersion) of a water-soluble organic polymer can be used as a film-forming binder for the perfumer with an aqueous emulsion of the eera (s) * ( If the polymeric film-forming binder is in dispersion (for example latex) it forms to this stage / it must be a layer to be converted to an aqueous solution to a subsequent stage, for example to produce sufficient acid groups if an acrylic polymer, usually carboxylic acid groups / which can provide solubility in water for neutralization with a base) * Usually this mixture can be a simple mixture / although a polymerization to form a water soluble polymer in the presence of an aqueous wax dispersion is not in principle discussed. The aqueous wax emulsion which is mixed with the aqueous solution (or dispersion) of the water-soluble film-forming polymer (as mentioned above), in a further embodiment of the invention is already mixed with an acrylic polymer latex, usuimente in a wax / acrylic polymer weight ratio within the 99/1 range 50/50 (more preferably 90/10 to 70/30). This acrylic polymer itself can be soluble in water / for example by the addition of neutralizable acid groups (usually carboxyl) at a sufficiently high level such that the polymer can subsequently be solubilized if desired for proper neutralization with a base. On the other hand, this acrylic polymer does not need to be insoluble in gua / for example because it is not neutralized. { if it produces acidic groups) or can be inherently hydrophobic (for example by not producing any or insufficient acid groups) so that it is insoluble in water at any PS, in such combinations of emulsion of wax and acrylic polymer insoiubie in water used by this embodiment (ie, it is then mixed with the water-soluble film-forming polymer), the acrylic polymer may have a glass transition temperature. { Tg) in a wide range of -20 ° C or ° C, more preferably 10 to 50 ° C, The utility of this additional mode is to more broadly add the quality of the water-soluble film of the perfumer for example to improve its boggling resistance, improves the flexibility of the film under conditions of low humidity, and increase the solubility in cold water. { when the additional polymer is water-soluble) »Use the acrylic polymer latex which is already in admixture with the wax emulsion previously mixed with the water-soluble polymer (s) to be used as the agglutinating agent (s). Film for the perfumer is present in a small amount compared to the weight of the binder. { s) of polymer forming the water soluble film itself >; Preferably the acrylic polymer. { in admixture with the wax) in this embodiment is present in an amount of 0 * 01 to 30% by weight, more preferably 0 * 3 to 5% by weight, based on the weight of the water-soluble organic polymer (s) used as the binder (s) forming the perfuming agent. Return to the water-soluble organic polymer (s) which is used as the binder. { §) former -e film to provide the water-soluble film construction of the perfumer. Examples of such polymers include polybutylene oxide, methyl cellulose and, especially / olivinic acid alcohol. PVOH is generally partially or totally alcoholized or hydrolyzed, for example 40-100%, especially 80-100% (and often specifically 88%), alcoholized hydroxylated poiiviníüco acetate. The resulting PVQH film can be a laminate of two or more film thicknesses, a modified surface film or a co-extruded film. PVOH films include M7030. { a monolayer film), L7030 (a laminated film), M7031 (a • monolayer film) / L7Q 1. { a laminated film) and M9500 { also referred to as PXP2841, an onoc film) all available from Chris Craft Products Industrial Inc. of South Holland Illinois, USA. Other polymers suitable for this purpose include / in particular. { as mentioned above) the acrylic polymers produce sufficient acidic groups (usually carboxyl groups) to give the water-soluble polymer neutralization with a base. - softly such polymers are made from a monomer charge containing 5 to 40% by weight, more usually 8-15% in pe of the monomer (s) give olefinically unsaturated carboxylic acid (examples of such monomers giving carboxylic acid, acrylic acid, methacrylic acid, β-carboxyethacrylate, maieic acid, and maleic anhydride), 40 to 95% by weight, more preferably 75 to 90% by weight ester monomers §i (meth) cryiotate acid containing 1 to 12 carbon atoms in the part of the alcohol ester former, preferably of alkyl of 1 to 10 carbon atoms or acrylates hydroxy acids or methacrylates of such monomers which are methyl methacrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, methacrylate and lime, n-butyral methacrylate, hydroxyethyl acrylate and hydroxyethylacrylate), and or at 20% by weight, more preferably 2 to 10% by weight of olefinically unsaturated monomers other than those mentioned above. { examples of such additional monomers which is styrene / acrylamide / ethacrylamide, 2-acrylamidomethylpropane sulfonic acid, and behenylethoxy methacrylate (25)) A particularly preferred one of the acrylic polymer system is added in water to provide the water-soluble film-forming binder of the perfumor as described in the pending PCT international application wo 97/00282 complete reference which is incorporated therein. This describes an appropriate combination of the acrylic polymer for the provision of a flexible, water soluble (preferably soluble in free water) / free film substantially or totally of piastifier in which it is suitable for the screening of the surrounding material of a perfumer, said polymer system comprises a combination of the polymer components § and H / where S is defined as at least one additional functional acid copolymer which is soft in character by virtue of having a Tg < Z ° Q, and H is defined as at least one additional functional acid copolymer which is hard in character by virtue of having a Tg > 40 ° c, and wherein additionally the S and H components are present in a relative weight ratio of S to H within the range of 9? /? Or to 65/35 and the acid functionalities of s and H are at least neutralized part such as to give the resulting film soluble in water? By the Tg of a co-polymer in itself this means that the transition temperature of the copolymer glass; As is well known, the Tg of a polymer is the temperature at which it changes from a glass, a brittle state to a plastic, elastic state. The Tg can be determined experimentally, for example by using a differential analysis calorimeter (DSC), taking the maximum of the derivative curve as Tg, or calculated from the well-known Fox equation. An S-type copolymer which is often air-dried from the monomers comprises the following amounts (based on the total weight of the monomers used) of acidic functional monomer (s), soft monomer (s), and hard monomers; On the functional acid; 5 to 4% by weight, more user? at 5% by weight, particularly 8 to 14% by weight »Soft monomer (s) 40 to 85% by weight, more usually 55 to 70% by weight, particularly 60 to 70% by weight. Monomer { s) hard; 5 to% by weight, more usually 15 to 35% by weight, particularly 20 to 30% by weight. (The above amounts of hard and soft monomers exclude hard or soft acid functional monomers: these are included in the acid functional monomer range). Examples of combinations of monomers for making soft co-polymers (using appropriate levels of soft and hard monomers) are; acrylic acid / ethyl acrylate / methyl methacrylate; acrylic acid / n-butyl acrylate / ethyl acrylate / methyl methacrylate; acrylic acid / n-butyl acrylate / methyl methacrylate; methacrylic acid / ethyl acrylate / n-butylacrylate / methyl methacrylate; acrylic acid / methacrylic acid / n-butyl acrylate / ethyl acrylate / methyl methacrylate; and acrylic acid / methacrylic acid / ethyl acrylate / methyl methacrylate. Examples of suitable soft and hard monomers for type H copolymers are as described above with respect to the soft and hard monomers for type-A copolymers, a type H co-polymer which will often be derived from monomers comprises the following amounts (based on the total weight of the monomers used) of acid functional monomer (s), soft monomer (s), and hard monomer (s): Acid functional monomer: 5 to 40% by weight, more usually 8 to 15% by weight, particularly ? to 14% by weight. Soft monomer (s): 0 to 50% by weight, more sumente 10 to 40% peS0 / particularly 25 to 40% by weight, Monomer (s) hard: 40 to 90% by weight, more usually 5p to? Q% in weight, particularly 50 to 65% by weight. (The above amounts of the hard and soft monomers exclude hard or soft acid functional monomers: these are included in the range of the acidic functional monomer). Examples of combinations of the monomer for the preparation of the hard copoiimers may be the same as those described above for soft copoimers, but of course using different (ie appropriate) amounts of hard and soft monomers, with respect to the neutralization of the functional groups acids in acrylic polymers (where water solubility is required) > the required degree of neutralization can be brought about by the use of an appropriate base or basic salt so as to convert the desired proportion of the acid functional groups to groups of anionic salts together with the corresponding presence of cations derived from the basic salt? Bases which may be used are non-volatile ie permanent) bases such as the Group of metal bases IA or II or basic salts, for example hydroxides, bicarbonates or carbonates (as appropriate) and particularly the hydroxides of Na, K and Li , and non-volatile water-soluble organic bases such as triethansamine and 2-methyl-2-amino-1-propane, Volatile bases which can be used are ammonia and volatile aliphatic amines such as triethylamine, diethanolamine and the like. However, it is preferred in most cases to use non-volatile (ie permanent or fixed) bases. { Volatiles can lose during film formation and film storage - mainly to damage the solubility of water) / with the best preferred permanent base being NaOH, however, the use of volatile bases such as (in particular) ammonia may be disadvantageous in some cases. Water-soluble acrylic polymers / including acrylic polymer blends, such as with PVOH polymers described above, may provide film constructions of the resultant monolayer type or demi-season type of fragrance. it would also be possible in principle to start a laminated construction of two quite different types of polymer, for example a laminated film of PVOH with an acrylic film. In case of using a laminated structure for the resulting fragrance the wax can be incorporated in one or both of the laminated films. 5i is incorporated into a single peiícuía / is usually incorporated in the outer layer of the resulting perfumor, although the incorporation - only in the inner layer is possible. In principle, any technique can be used to make a water soluble film as described above, for example calender, extrusion or, more preferably, molding. When the film is made by molding. When the film made by molding, a solution or dispersion of the polymer system, together with any desired additive (s). { for example, the wax) could, for example, be poured on a suitable molded horizontal surface. { for example made of a material of pickles such as polyethylene or polypropylene) and the aqueous carrier phase was removed by natural or accelerated evaporation. { for example at room temperature or at an elevated temperature such as in a furnace), a film can also be made by coating it to a flat surface using an application bar to determine the thickness of the film in place of the dimensions of the mold. ? Laminated films can be formed by techniques such as sequential molding, co-extrusion / and lamination of two pre-formed peices. The film of the perfumer is preferably self-supporting? A water soluble film containing wax / if in the form of a layer or laminate which is used for the construction of a perfume of the invention should preferably contain from 1 to 30% by weight, more preferably 3 to 30% by weight. in wax weight / based on the total dry weight of the film. { and as mentioned in the previous / in the case of a laminated product, can the wax be present in one or both of the two peíícuias and be used in at least the outer film)? The water soluble film used to make the perfume of the invention may also include (in addition wax) if desired materials such as auxiliary slips / dyes / wetting agents (surfactants) / reagents (eg silica or starch), cleaning agents, and (where necessary) plasticizers (such as güceroi for example / in the case of the polyvinyl alcohol film), the aqueous base composition 3 packaged in the water-soluble perfume is, in particular, an agrochemical composition comprising an active ingredient agro-chemical water / water / and optionally other components / such as electrolytes / thickeners, chelating agents, antifreeze agents, antifoaming agents, polishes / dyes, emetics / reagents odorants / perfumes, non-hazardous / organic solvents, stabilizers, synergists and agents moisturizers? The active ingredient agrochemically soluble in water is / for example, a herbicide tai such as a paraquat salt (for example paraquat dichloride or paraquat of bi. (Methylisuphate)), a diquat sai. { for example diquat dibromide or diquat aiginate) or glyphosate or a salt or ester thereof (such as glyphosate isopropylamonis, glyphosate sesquisodium or trimesium glyphosate (also known as suifosate)), an insecticide or a fungicide. It is preferred that the water soluble agrochemical is paraquat dicyorurp, diquat dibromide, glyphosaph isopropylammonium or trimesium glyphosate (also known as suifosate). An electrolyte may be included in the composition to increase its ionic strength. The concentration of electrolytes in the aqueous composition may be greater than the concentration of electrolytes in the water in which the perfumer may be disueyte. Electrolytes could normally help improve the insolubility of the material from which the perfuming agent is made in the composition. Preferred substances are ammonium sulphate / sodium sulfate, potassium sulfate, copper sulfate, ammonium nitrate, sodium nitrate, magnesium sulfate, potassium nitrate, sodium chloride and potassium chloride. Adjuvants or co-formulants (such as moisturizers or antifreeze agents) may also be and are incidental to the composition. Suitable adjuvants include neutral or anionic surfactants [such as a soap, a sai of an aiiphatic monoester SUBSTITUTE acid (for example, sodium uranium sulfate), a sai of a suifonated aromatic compound (eg, sodium dodecylbenzenesulfonate) or an alkyl glucoside] or poiisaccharides. Suitable humectants include an alkyl glycoside., a Sai of a suifonated aromatic compound, (for example, sodium dodecylbenzenesulfonate), an ethoxylated alcohol or a digiucamide? Suitable thickeners incite various grades of xanthan gum. Can the agrochemical composition also comprise a chelator or a separating agent for calcium ions? An appropriate chelator or separating agent is the ethynediaminetetraacetic acid? Additionally the agrochemical composition may also comprise an adhesive, an antifoaming agent, a polisher, a deodorant / a dye / an emetic, a preservative / odorant, a perfume / a non-hazardous, an additional solvent, a stabilizer, a synergist / a Thickener or a wetting agent? The water soluble fragrance can be formed and reiien amp; using standard techniques. { such as thermoforming or sealing of filling vertically). In USE, the packaged agrochemical composition is mixed with water (for example in an agrochemical sprayer) to give a puiverizabie solution of the agrochemical active ingredient soluble in water. An aqueous-based packaged composition (in particular a packaged aqueous agrochemical composition) of the present invention may be part of a bag-in-bag arrangement (e.g., an arrangement in which the packaged aqueous-based composition of the present invention is enclosed within a second water-soluble perfume having only the packaged aqueous-based composition of the present invention [the second fragrance preserves an additional barrier to contain the agrochemical composition] part of an arrangement wherein two water-soluble fragrances are joined with a common seal or part of an arrangement wherein the sealing of the two perfummers is joined by a hinge of water soluble film.

It is also possible for the invention of water-soluble perfumers to be packaged in. It is also possible for the invention to be packaged water-soluble perfumers in the action of the outer bag not soluble in water as secondary packing. { for example, a polyethylene / aluminum iamine / paper laminate), the present invention is now illustrated for reference to the following examples. Unless otherwise specified all parts / percentages and proportions are on a weight basis. In the examples / the following abbreviations are used: PVOH: polyvinyl alcohol PFT; thickness of the dry film Preparation of the PVQH solutions The aqueous solutions PVOH are prepared, for example, as follows; A solution in water at 15% w / w of the active component was prepared where the active component is; PVOH: 77.8% Glycerol-: 15.6% (plasticizer) Starch; €, €%. { filler) PVOH: Mool 40-88 ', 88% hydroxylated, M. Weight 127K, ex-Aldrich Glycerol: Glycerol analar, ex-BDH Starch; \ Avedex 36LAC14U ', ex-Avede Ltd Example: Distilled water (340g) was stirred in a matra? at room temperature. Glycerol (9.36 g), starch, was added to it. { 3.9 g) and PVOH (46.68 g), The mixture was heated to 60 ° C and stirred continuously until PQV? It completely dissolved. The PVOH solution is then left to cool to room temperature without agitation to allow the trapped air to be emitted.

Preparation of the pyoH / wax solutions Aqueous solutions of PVOH / wax were prepared, for example, as follows: In order to obtain approximately 80 μm DFT films, two layers each of approximately 40 μm DFT are molded. When a wax contains a film that contains 10% w / w of wax that is recycled, in the total weight of the peel / wax it is combined in the second layer at a level of 20% w / w, • The wax emulsion is reduced to 15% weight / weight solids content by dilution with water. This is then added to the above PVOH solution with stirring at room temperature.

Example: To produce a final film composition containing 8.3% w / w in wax of a pvoH / wax formulation is prepared containing 16.6% w / w in wax. A 15% of xMichelman ML270-E 'wax emulsion (mixture of paraffin and carnuba waxes, yielded about 40% weight / weight of solids) 25g of distilled water / so productive was added a wax emulsion at 15% w / w solids. to pvojí solution. { 200%; 15% solids) was stirred at room temperature and the The dilute wax emulsion (0g) was added over 10 minutes to give the desired formulation containing 16.6% w / w in wax. L-wax emulsion can be added to the PVOH solution and stirred at 80 ° C as well as at room temperature), Preparation of Water-Soluble Films for Perfumers • Approximately 80 μm DFT films were made for the construction of these perfuming agents. This was carried out by molding 2 layers of formulation, each e of approximately 40 μm of DFT. Was the first layer allowed to dry before the application of the second layer? Example; The production of a laminated film containing 8.3% w / w in wax was prepared as follows? For example, a layer of a PVOH solution (in the absence of wax) was emptied onto an untreated sheet using polychloride Adjustabide Film Applicator to provide a wet film thickness of 270 μm. This film was dried at about 1 hour. Then a second cover of the pvoH / wax formulation (16.6% w / w in wax) was applied on the first cover (wet film thickness of 270 μm). This was dried again at 80 ° C for 1 hour. A final laminate coating of about? Or μm of PFT containing s? 3% w / w was obtained in wax / in which the wax content is thought to be stratified to the cover / air interface during drying » Construction and filling of Soluble Fragrances in Water The films prepared in polypropylene were cut to 240mm x 200mm »The polypropylene support is then carefully removed. Is the film folded by half lengthwise? Does the film containing wax form the outer film of the perfumer? The 2 shorter sides of the perfumer were sealed by heating using a Hume-Martin heating senator. For the PVQH-based films the heat seal was 6.5 and the cold environment was 8.5, The resulting perfumer had the fold as the bottom edge. The perfumer was filled with 70 ml of saturated magnesium sulfate, then the final side was heated by heating. This gives a perfumor of dimensions of approximately 200 mm x 120 mm.

Construction of Outer Bags Water-soluble perfumers were contained in secondary secondary packaging for storage; a laminate of polyethylene / aluminum / paper (DFT of microns) was prepared with the polyethylene forms the inner side of the resulting package, the sheets were cut to 219 mm x 200 mm. Two small sheets were put together on top of one another and three sides sealed by heating. A water-soluble perfume was then placed inside this outer package and was removed by capping on the outside side of the outer package.

Test A series of water samples with / without and without external packing / was subjected to storage tests at 40 ° C and 40% relative humidity. Gravimetric determination was made between water loss of the aqueous contents. Additionally, the dissolution ratio of the water-soluble films was determined, both before and after storage.

Results Example 1: Soluble Water-Free Scents without External Packaging Four films were studied, in each duplicate; PVOH without wax Ib PVOH + 2 »9% w / w wax in pvoH + 4,15% w / w in wax Id PVQH + 8.3% w / w in eer-a These perfumers were stored for 3 days before determine the loss of water »Due to the absence of loss of water from the outer packaging of the perfumers is considerable under storage conditions; after 3 days, the precipitation of magnesium sulfate was observed and the results were considered unreliable after this time. The results demonstrate the basic influence of wax's ability to reduce water loss, particularly at the level of 8.3% w / w.

EXAMPLE 2; Soluble Scents in Water Contents in Exterior Packaging Three peíículas were studied, in each duplicate 2a PVOH 2b PVOH + 4.15% in wax 2c PYQH + 8.3% in wax these perfumers were stored for 4 weeks before determining the weight loss » This set of results clearly shows a reduction of 6% in the loss of water from the contents as a consequence of the incorporation of 4.15% weight / weight in wax in the composition of the film, and a reduction of 63% in the loss of water. water when 8.3% wax is incorporated in the film composition.

General Test to Test the Water Solubility in Water The solubility of the film was determined by mounting in 500 cm3 of water (distilled or tap) in 600 cm3 in a beaker, maintained at 10 ° C. The slide is stirred 4Q0 rpm using a long magnetic stir bar. At the time of packing it was defined as the moment taken for the sample of the crop to unleash the previous structure and the dissolution time is measured as the time taken to To complete the dissolution of the Tai Chi crop, no trace of the film remained when it was filtered through a 150 micron sieve.

The addition of wax thus will have negligible effect on the film at the time of breaking although there was an increase in the time required to compete for the dissolution, • After the dissolution the wax is redispersed returning to an aqueous emution form of rather low particle size. so as not to block the sieve »if the dissociation time is greater than a few minutes then the technique is considered insoiubie for this purpose, It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention is the conventional method for the manufacture of the objects or products to which it refers. Having described the invention as above, property is claimed as contained in the following:

Claims (1)

1. CLAIMS i? A water-soluble perfume or sachet for properly packaging a water-based composition, the perfume has a peel construction comprising a water-soluble film and the binder material characterized by comprising an organic polymer (s) soluble in water, and which construction of peíícuía incorporates cerís) dispersibie in water derived from an aqueous dispersion of l wax. { s) used in the formation of water soluble peiícuía » 2? The perfumor according to claim 1, characterized in that the water-based agrochemical composition, for the cleaning of the home, pigments, insecticide, industrial cleaning, cleaning of household surfaces or a composition of material for public health. 3. The perfumer according to claim 2, characterized in that the water base composition is an agrochemical composition / the preferred agrochemically active ingredient is a packaged sai, a sai diquat / a glyphosate or a salt or ester thereof, 4? The perfumer according to claim 1, characterized in that the water-soluble organic polymer (s) is an alcohol polymer POÍIVINIiíCO, 5, The perfumer according to claim 4, characterized in that the polyvinyl alcohol is 40-100% alcoholized or the polyvinyl acetate is hydroidized? 6, a perfumer according to claim 1, characterized in that the water-soluble organic polymer (s) is one of the carboxy groups producing the acrylic polymer. i. The perfumer according to claim 6, characterized in that the acrylic polymer (s) comprises a combination of polymeric components s and H, where at least one additional functional acidic copoiimer is defined which is soft in character by virtue of to have a Tg < 2Q ° c, and H is defined as at least one additional functional acid copolymer which is hard in character by virtue of having a Tg > 4Q ° c, and wherein additionally the S and H components are present in a relative weight ratio of S to H within the range from 90/10 to 65/35 and the acid functionalities of s and H are at least in part neutralized such as to give the resulting film soluble in water? 8, The perfumer according to any of the preceding claims characterized the film construction of the perfumer contains from 1 to 30% by weight, more preferably 3 to 10% by weight / based on the total dry weight of the film, of the wax. { is) , 9. The perfumer according to claim 1, characterized in that the wax (s) dispersed in water has a pour point of 50 ° C. 10, The perfumer according to claim 1, characterized in that the wax dispersible in water is selected from the list comprising: petroleum waxes such as paraffin waxes and microcrystalline wax; animal wax such as beeswax; vegetable wax such as carnuba wax and candelilla wax; mineral waxes such as mastone wax and combinations thereof » 11, The perfumer according to claim 1, characterized in that the film construction comprises a laminated construction. 12. The perfumer in accordance with the rei indicated 11 / character because the laminated construction comprises different polymer films? 13? The perfumor according to claim 11, characterized in that the wax can be incorporated in one or all of the laminated peiícuías? 14? The fragrance according to any of the preceding claims for packaging a water-based composition in fully or partially sealed form? 15, The combination of a water-soluble fragrance and a water-based composition packaged in the same / said fragrance has a film construction comprising a water-soluble film the binder material of which comprises an organic polymer (s) soluble in What is the construction of a water-dispersible waxy wax (s) derived from an aqueous dispersion of the wax (s) used in the formation of the water-soluble film? 16, The combination of a water-soluble perfumer and a water-based composition packaged in the a / a perfumer has a specific construction according to any of the preceding claims. 17. The method for making a perfumer according to claim 1, characterized in that the method comprises preparing a water-soluble film of an aqueous solution or dispersion of a water-soluble organic polymer (s) in admixture with an aqueous dispersion of a wax) and forming a perfumer whose film construction comprises said water-soluble peíícuía. 18, the method for making a perfumer according to claim 1, characterized in that the method comprises preparing a water-soluble film of an aqueous solution OR dispersion of a water-soluble polyvinyl alcohol polymer (s) in admixture with an aqueous dispersion of a cer ís) and formed a perfumor whose film construction comprises said water soluble film. 9 The method according to claims 17 and 18, characterized in that said aqueous dispersion of a wax (s) which is mixed with said aqueous solution or dispersion of a water soluble organic polymer (s) / itself also contains an acrylic polymer in the form of latex or solution which acrylic polymer is soluble in water or insoluble in water. twenty? The method according to claim 19, characterized in that said acrylic polymer is insoluble in water and has Tg of -20 to 100 ° C, more preferably of 10 to 50 ° C?