DE2625774A1 - METHOD OF CONDITIONING FABRICS - Google Patents

Description

LAWYERS

DR. JUR. DIPL-CHEM. WALTER BEIL η O ι _{ιιη} iQ7R}

ALFRED HOEPPENER ^{oil JUni WB}

DR. JUR. ¹ DIPL-CHEM. H.-J. WOLFF

DR. JUR. HANS CHR. AX

FRANKFURT AM MAIN-HOCM » AOaONSIRASSt SB

Our no. 20 543 D / wl

The Procter & Gamble Company Cincinnati, Ohio, V.St.A.

Method of conditioning tissues

The present invention relates to the treatment of fabrics with conditioning agents (primarily fragrances) during automatic drying when washing in the home. The invention uses fragile microcapsules that contain the tissue conditioning agent Apply to the textile material to be treated. The capsules containing the conditioning agent are applied to the Gexvebe in the automatic dryer and held there to a certain extent, and then and rupturing the tissue, releasing the conditioning agent.

The household linen gives the possibility to treat the fabrics to be washed with different substances, which the textiles confer an advantageous property or quality. In each

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Stage of the washing process (soaking, washing., Rinsing and drying) the tissues are generally in contact to varying degrees with water, which is the medium for releasing the tissue conditioning agent represents. However, it is not possible to release textile conditioning agents to fabrics during washing perform without any particular difficulty. Surfactants generally become active during soaking and vashing used for the purpose of removing material (dirt) from the fabric. The simultaneous deposition of textile conditioning agents can therefore be difficult. Some of these difficulties can be overcome by having the tissues in the automatic Dryer conditioned (see, for example, US Pat. No. 3,442,692), however, it is extremely difficult to achieve effective dryer deposition of such fabric conditioning agents which are volatile, such as fragrances, and therefore evaporate quickly under the heat of the dryer.

Attempts have been made to reduce the deposition of fabric conditioning agents to make it more effective during the washing process. For example, BE-PS 835191 relates to the use of particulate Sorbitol esters as fabric conditioners for use in household linen. BE-PS 8j54 615 concerns the use of particulate! Starch material for delivering fragrances to tissue in the automatic dryer. Despite these developments There continues to be a need for methods and articles suitable for the effective delivery of conditioning agents on fabrics while washing in the home.

The aim of the invention is therefore to provide an improved Method for delivering fabric conditioning agents, particularly volatile agents such as fragrances, to fabric during the drying step when washing in the household. The invention also seeks to provide articles that are fed into the dryer and deliver effective amounts of fabric conditioning agent to the fabrics to be washed.

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It has surprisingly been found that the above-mentioned objectives can be achieved by using certain types of fragile microcapsules containing certain types of conditioning agents in combination with certain Means of transmission. Thereby procedures and realize objects that are unexpectedly superior to previously known methods and objects. Treatment of Geveben with microcapsules is known (see for example US-PSS 3,870,542 and 3,632,296), but the previous ones required tissue treatments generally the use of a variety of microcapsules for effective delivery. Further The prior art does not provide any methods or objects that can be used to treat the tissue during the automatic Suitable for household drying.

The invention relates to a method for treating fabrics with a conditioning agent during the automatic Drying in the household. A treatment mixture, which is water-insoluble, fragile, is applied to the damp fabrics in the dryer Contains microcapsules, and the tissues so treated are then rocked back and forth to break the capsules.

The microcapsules used according to the invention consist of a liquid core which contains the tissue conditioning agent, and a thin polymer skin that surrounds the liquid core. The microcapsules used for textile treatment have sizes of about 5 to 500 microns. The mean thickness of the capsule shell is between about 0.1 and 50 microns.

In addition to the microcapsules, the tissue treatment agent contains an essentially water-insoluble, substantive transfer agent, that is in contact with each microcapsule. The transfer agent has a melting / softening point between about 40 and 150 C and is present in such an amount that that Weight ratio of microcapsules to transfer medium in the tissue

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treatment agent is between about 0.002: 1 and 2.0: 1. That Transfer means facilitates the application and, to a certain extent, the binding of the individual. Microcapsules to the treatment Tissue.

The treated tissues are reciprocated by any means involving a substantial amount of the applied tissue Tear open microcapsules so that tissue conditioning agent is released.

The invention also relates to articles containing an effective amount of a fabric treatment mixture and one in the dryer using dispenser for this mixture. The treatment mixture contains the microcapsules described above and the over-

the carrying means. The dispenser takes care of the dispensing of the capsules containing treatment mixture in the dryer under the operating conditions of the dryer.

The present invention relates to the application of fragile Microcapsules containing a fabric conditioning agent, and subsequent treatment of the fabric in such a way that the microcapsules are broken, during household laundry. The microcapsules are generally drier on the damp tissue applied with the aid of a treatment mixture which contains the microcapsules and a transfer medium in contact with them contains. The inventive method and to Objects used to carry it out are described in more detail below.

Microcapsules

The microcapsules usable according to the invention consist of one liquid core, which contains one or more tissue conditioning agents, and a thin polymer shell, which contains the liquid core completely surrounds. By encapsulating the tissue conditioning agent (in liquid form) the conditioning agent is used during

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Protected during the washing process and thus saved for the most effective application on the textile material. The conditioning agent will only applied to the tissue when the microcapsules break. This can be done either in the automatic dryer or after washing while the textiles are being worn.

A "tissue conditioning agent" is understood to mean any substance which improves or modifies the chemical or physical properties of the treated fabric. Examples suitable fabric conditioning agents are fragrances, elasticity-improving agents, flame retardants, pleating agents, Antistatic agents, emollients, dirt-repellants, water-repellants, wrinkle-relievers, acid-repellants Agents, anti-shrink agents, heat protectants, dyes, brighteners and fluorescent substances.

The conditioning agent particularly preferred according to the invention are fragrances. Fragrances are a particularly suitable conditioning agent in the present case, since their volatility in the generally leads to particular difficulties when used in the automatic dryer.

Any fragrant material can be used in the liquid core of the microcapsules, according to the manufacturer's wishes is selected. The fragrances are characterized by a vapor pressure, which at normal temperature is below normal pressure lies. The fragrances used here are often liquid at normal temperature, but can also be solids like the various known fragrances of camphor. Numerous chemicals are for use as fragrances and perfumes Including aldehydes, ketones, esters and the like. Usually naturally occurring vegetable and animal oils and exudates, the intricate mixtures of various containing chemical components, used as fragrances and perfumes, and these can also be used according to the invention

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The fragrances can be relatively simple in their composition or highly complex mixtures of natural and synthetic represent chemical constituents selected to give any desired odor. Typical perfumes suitable for present purposes contain, for example, woody / earthy bases made from exotic materials such as Sandalwood oil, civet oil, patchouli oil and the like. The fragrances can have a light floral aroma, such as rose extract, violet extract, and the like. They too can fruity smells can be formulated, for example lime, lemon, orange-like and the like. You can therefore use the liquid core of the microcapsules use any material that has a pleasant or otherwise desirable odor gives off, so that a desired odor is achieved when applied to tissue.

The fabric conditioning agent is often in liquid form and can be used as the sole content in the microcapsule. Conditioning agents that are solid under normal conditions can also be used in the core of the microcapsules if they are used with a Liquefying agents such as a solvent mixed. For liquefying solids under normal conditions Fabric conditioning agents can be Sasser or any organic solvent, provided that the solvent is chemically compatible with the shell of the microcapsule.

As surrounding the liquid core containing the conditioning agent Shell material can be any suitable polymeric materials used, which are opposite to the substances in the liquid core and the materials with the outside of the shell in Contact, are impermeable. The wall of the microcapsules can be made of various polymer materials such as for example made of polyurethane, polyolefin, polyamide, polyester, polysaccharide, silicone resin or epoxy resin. Numerous of these

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polymeric microcapsule shell materials are disclosed in U.S. Patent 3,870 described.

The aminoplast polymers from the reaction products of urea and urea are particularly preferred as the shell material of the microcapsules an aldehyde, for example formaldehyde. These are materials that come from a water-soluble prepolymer state are capable of polymerization under acidic conditions. The prepolymers are made by making urea and formaldehyde converts about 1.2: 1 to 2.6: 1 in a molar ratio of formaldehyde to urea. To modify the urea you can Thiourea, cyanuramide, guanidine, N-alkylureas, phenols, Sulphonamides, anilines and amines are added in small amounts. Those made from this prepolymer under acidic conditions Polymers are insoluble in water and have the requisite fragility in capsules, as described in more detail below.

Microcapsules made from the above-described liquid cores and polymeric capsule walls can be manufactured according to any conventional Processes are produced which lead to capsules of the required size, fragility and water insolubility. In general can use methods such as coacervation and interfacial polymerization can be used in a known manner, so that microcapsules of the desired properties are obtained. Such Methods are described in U.S. Patents 3,870,5 ^ 2, 3,415,758, and 3,041,288 described.

Microcapsules made from the preferred urea-formaldehyde shells can be produced by interfacial polymerization according to US Pat. No. 3,516,911. In this method, an aqueous solution is prepared of a urea / formaldehyde precondensate (methylol) with about 3 ms 30 wt.% Precondensate. The water-insoluble liquid core material (for example fragrance) is in this solution in the form of discrete droplets

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microscopic size dispersed. While maintaining a solution temperature of 20 to 90 ° C is then added acid, around the polymerization of the dissolved urea / aldehyde precondensate to catalyze. If the solution is stirred rapidly during this polymerization, shells of water-insoluble material are formed Urea-formaldehyde polymer around the dispersed droplets of liquid core material and encapsulate them. on the microcapsules preferred according to the invention are obtained in this way.

Regardless of the manner in which the microcapsules were created, it is important for the present purposes that the microcapsules have a size ¹¹ between about 5 and 500 microns, and preferably between about 10 and 100 microns. Furthermore, it is essential that the capsules used according to the invention have an average thickness of the shell of about 0.1 to 50 μ, and preferably of about. 0.4 to 4 μ.

The microcapsules used in the present invention must be fragile. The breakability of the microcapsules understood how to tear or break open when direct external pressure or gravitational forces act. The used Microcapsules are "fragile" if they dry up after being "released" in the v / as due to the falling back and forth of the tissues forces generated or broken by forces that occur when wearing or handling the textiles. With the above Microcapsules produced from the shell materials mentioned are generally "fragile" if they meet the critical values for The capsule size and thickness correspond to the capsule wall.

The means of transmission

The application of the microcapsules to the textiles to be treated is facilitated when the microcapsules with a certain transfer medium are in touch. The used according to the invention

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Transfer agents are essentially water-insoluble materials that are fabric noun and have a melting / softening point in the range of about 40 to 150 and preferably in the range of about 49 to 105 ° C. Under "a water solubility at JO is substantially insoluble in water ⁰ C of 1 wt.% Or less understood.

Particularly suitable transfer agents are those cationic and non-ionic organics, commonly used as fabric softeners during the washing, rinsing or drying process be used by household washing machines. The substances of this type generally have the necessary ones Noun properties.

Suitable cationic transfer agents include the cationic (including imidazolinium) compounds according to US Pat. No. 3,686,025. These substances are known, for example the quaternary ammonium salts with at least one and preferably two C, _O -Cp _n -fatty alkyl substituents , Alkylimidazolinium salts in which at least one alkyl radical has a Cg-C ₂ , r carbon chain, the C ₁ p-Cp ₀ -alkylpyridinium salts and the like.

The cationic plasticizers preferred according to the invention include the quaternary ammonium salts of the general formula R ¹ R ² AV ₁ X ", in which R ¹ , R ² ,? And R are, for example, alkyl and X ~ is an anion, for example a halide, the Represent acetate, methyl sulfate, ethyl sulfate or the like, chlorides and methyl sulfates being preferred.

1 2

Carriers are those in which R and R each have one

Fatty alkyl radical with 12 to 00 carbon atoms and R ^ and R each represent an alkyl radical with 1 to 4 carbon atoms. The Fettalky may be mixed! Groups, that may be quaternary compounds with mixed C, and C, acting g-coconut alkyl and mixed Cg-C, o-Talgalkylresten. The alkyl radicals

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5 4

R and R are preferably methyl radicals.

Specific examples of quaternary plasticizers are ditallow alkyldimethylammonium methyl sulfate, Ditallow alkyl dimethyl ammonium chloride, dicoconut alkyl dimethyl ammonium methyl sulfate, and dicoconut alkyl dimethyl ammonium chloride.

The non-ionic transfer agents include many

of substances, including sorbitol esters, fatty alcohols and their Derivatives, diamine compounds and the like. A preferred group of nonionic transfer agents are the esterified ones cyclic dehydration products of sorbitol, i.e. sorbitan esters. Sorbitol, produced by the catalytic hydrogenation of glucose can be dehydrated in a known manner with the formation of mixtures of cyclic 1,4- and 1,5-sorbitol anhydrides and small amounts of isosorbides (see US Pat. No. 2,322,821). The resulting mixture of cyclic anhydrides of sorbitol is referred to as "sorbitan". Of course includes such a sorbitan mixture is also somewhat free, non-cyclized Sorbitol.

Sorbitan transfer agents are made by adding the "sorbitan" mixture to a fatty acyl group in a conventional manner esterified, for example by reaction with a C-, -Coh fatty acid or a fatty acid halide. The esterification can take place any of the available hydroxyl groups and various mono-, di-, and the like esters can be made. Indeed, these reactions almost always result in complicated mixtures of mono-, di-, tri- and tetraesters, and you simply needs to be the stoehiometric amounts of the reactants adjust so that the desired reaction product is favored. The sorbitan mono- and diesters are according to the invention as Transfer agents are preferred, but all of the esters mentioned are useful.

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2825774

The above-described mixtures of esterified cyclic dehydration products of sorbitol (and small amounts of esterified sorbitol) are referred to in the present description as "sorbitan esters". In particular, the sorbitan mono- and diesters of lauric, myristic, palmitic, stearic and behenic acid can be used to facilitate the transfer of the microcapsules to the tissue to be treated. Mixed sorbitan esters, for example mixtures of the above esters, and mixtures which are obtained by esterifying sorbitan with fatty acid mixtures such as, for example, the mixed tallow and hydrogenated palm oil fatty acids, are useful and economically interesting according to the invention. Such mixtures usually contain unsaturated C, C, o-sorbitan esters, for example sorbitan _monooleates. All sorbitan esters and their mixtures, which are essentially insoluble in water and have fatty acid hydrocarbyl chains, are suitable transfer agents for the purposes of the invention.

The preferred transfer agents from alkyl sorbitan esters are sorbitan monolaurate, sorbitan monomyristafc., Sorbitan monopalmitate, Sorbitan monostearate, sorbitan monobehenate, sorbitan dilaurate, sorbitan dimyristate, sorbitan dipelmitate, sorbitan distearate, Sorbitan dibehenate, the mixed coconut alkyl sorbitan mono- and diesters and the mixed tallow alkyl sorbitan mono- and diesters. Furthermore, the tri- and tetraesters are suitable Sorbitan and lauric acid, myristic acid, palmitic acid, stearic acid and behenic acid.

Sorbitan esters of the type described above are described in BE-PS 827,966.

Another group of suitable nonionic transfer agents are the substantially water-insoluble compounds known as Fatty alcohols are designated. Of these, the mono-oie, di-ols and polyols with the required melting points and are suitable Solubility properties. To these alcoholic transmission

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The mono- ur.-d difatty glycerides with at least a "free" hydroxyl group.

All types of water-insoluble high-melting alcohols (including mono- and diglycerides) are suitable for the present Purposes, in that they are all tissue nouns and favor the application of the microcapsules to the tissue surface. Of course, the use is recommended colorless fabrics so that the color of the treated fabric is not changed. Also toxicologically acceptable substances that are used in Safe skin contact should be used.

A preferred group of non-esterified alcohols are the higher-melting members of the class of the so-called fatty alcohols. These were originally alcohols obtained from natural fats and oils, but fatty alcohols are understood as meaning today those alcohols which correspond to the alcohols obtainable from fats and oils, all of these alcohols can be produced synthetically. Fatty alcohols produced by mild oxidation of petroleum products are suitable.

Another group of compounds referred to as alcohols and used as transfer agents in accordance with the invention are various esters of polyhydric alcohols. Such "ester alcohols" with melting points in the specified range, the are essentially water-insoluble can be used for the present purposes if they have at least one free hydroxyl group and can therefore be described chemically as alcohols.

The alcoholic diesters of glycerol which can be used according to the invention are both 1,5- and 1,2-diglycerides. In particular, diglycerides with two Co-Cp ₀ - and preferably C -C -06 alkyl radicals are useful transfer agents.

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Examples of usable ester alcohols are: glycerine l, 2-dilaurate, glycerine l ^ -dilaurate, glycerine 1,2-myristate, Glycerin-ljjS-dimyristat, Glycerin-1,2-dipalmitat, Glycerin-ljJ-dipalmitate, glycerin-1,2-distearate and glycerin-1,2-distearate. Mixed glycerides from mixed tallow alkyl fatty acids, i.e. 1,2-ditallow alkyl glycerin and 1,3-ditallow alkyl glycerin, are economically interesting. The above ester alcohols are used for the purposes of the invention because of their ease of preparation Preferred from natural fats and oils.

Also mono- and diether alcohols, especially C-jQ-C ^ g Alcohols with at least one free hydroxyl group are according to the invention useful alcoholic transfer media. The ether alcohols can be prepared according to the classic Williamson ether synthesis will. As with the ester alcohols, the reaction conditions are chosen so that at least one free, non-etherified Hydroxyl group remains in the molecule.

Suitable ether alcohols are, for example, glycerine l, 2-dilauryl ether, Glycerin-l, j5-distearyl ether and butanetetrael-l, 2,3-trioctanyl ether.

Further nonionic transfer agents suitable according to the invention are essentially water-insoluble diamines and diamine derivatives. These diamine transfer agents are selected especially alkylated and acylated diamine compounds.

The suitable diamine compounds correspond to the general formula

R _p R,

^! , ^ '
R ₁ -N- (CH ₂ ) _n - N - R ₄

wherein R _{1 is} an alkyl or acyl radical with about 12 to 20 carbon atoms, R ₂ and R-, hydrogen or alkyl radicals with about 1 to 20

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Carbon atoms and R ₁ . , Hydrogen, a C ^ _ ₂₀ alkyl or _C-O jp p -A_c; yl radical represent. At least two radicals or R ^ ₃ H-, and Ru are hydrogen or alkyl with 1 to J> carbon atoms, η is a number from 2 to 5

Examples of such alkylated diamines are the compounds) - (CH ₂ ) ₃ -N (CH ₃ ) ₂

^C 12 ^H 25 ~ ^{N (CH} 3 ⁾ " ^(CH 2

- (CH ₂ ) ₂ -N (CH ₃ ) ₂

C ₁₈ H ₃₇ -NH- (CHg) ₃ -HN-CH ₃ C ₁₆ H ₃₃ -NH- (CH ₂ ) ₃ -HN-C ₁₆ H ₃₃

^R tallow-N (CH ₃ ) - (CH ₂ ^ -

C ₁₂ H ₂₅ N (C ₂ H ₅ ) - (CH ₂ ) ₂ -N (C ₃ H ₇ ) ₂ and

In the above formulas, R _{m Ί denotes} the alkyl radical derived from tallow fatty acid.

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Further examples of suitable alkylated diamine compounds are N-tetradecyl-N'-propyl-l ^ -propanediamine, N-eicosyl-N, N ', N ^f triethyl-1,2-ethanediamine and N-octadecyl-N, N ^! , N'-tripropyl-1,3-propanediamine.

Examples of acylated diamine compounds suitable as transfer agents are the C, -, p _O -amido ~ amine derivatives, which are commercially available, for example, under the trade name "Chemical Base 6532" (Sandoz Colors and Chemicals).

The transfer agent according to the invention can be mixtures of the above contain essentially water-insoluble, tissue-substantive Pett compounds described, and preferably does so even. These particularly preferred mixtures of cationic and non-ionic substances include, for example, mixtures of cationic quaternary ammonium compounds and various sorbitan ester compounds, which are particularly suitable when the fabrics are treated with the microcapsules during automatic drying. These preferred means of transmission will be described in more detail below.

Application of the capsules to the fabric in the dryer The above-described microcapsules are generally applied to the textiles in a dryer by means of a fabric treatment mixture which contains the microcapsules and the transfer agent (s). In the treating agent, the weight ratio of microcapsules to transfer agent is generally between about 0.002: 1 and 2: 1, and preferably between about 0.01: 1 and 0.2: 1. The treatment mixture can contain further optional components, depending on the method by which this treatment mixture is applied to the fabrics to be treated in the dryer.

Microcapsules and transfer media should be included in the treatment mixture be in touch with each other. Preferably surrounds or

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the transfer medium completely envelops the individual microcapsules. This is generally accomplished by placing the microcapsules and transfer medium in a liquid medium carefully mixed together.

For example, one can disperse the water-insoluble transfer agent in a stirred aqueous liquid, which the water-insoluble microcapsules are added. The means of transmission then tends to surround the individual microcapsules in the dispersion.

Furthermore, the transfer agent can be melted into a liquid and the microcapsules can be melted while stirring the liquid melt admit. Upon cooling and hardening, a treatment mixture is obtained in which the microcapsules are transferred into the surrounding transfer medium are embedded.

If the treatment agent is to be in granular form, the microcapsules can be pretreated with the transfer agent in such a way that that this coats the microcapsules. Any conventional coating process can be used for this purpose, including spraying (maurumerisation) or fluidized bed processes.

The treatment mixture, which is in any suitable form, can be applied to the fabrics in the automatic dryer by any means. Either you can use the treatment mixture Simply spray in granular or liquid form onto the fabric in the dryer. The treatment mixture can also be released in the dryer using a suitable dispensing device or known method. Preferred items for the delivery of the treatment mixture in the dryer are described in more detail below.

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Surprisingly, it was found that when looking at the fabric treatment mixture of microcapsules and transfer agents applied to the tissue in the dryer, at least some of the microcapsules migrate to the fabric and bind to the textile material. The substantive transmission medium is believed to be the Promotes release of the microcapsules to the tissue surface and also serves as an "adhesive" that at least part of the individual microcapsules on the tissue.

By using a transfer medium that is in contact with the microcapsules, and preferably completely surrounds, it is possible to deliver a satisfactory number of microcapsules to the tissue front surfaces without being extremely large Capsule quantities were required. In general, the amount of microcapsules used in the present invention is only about 0.0002 to 0.2 wt. ^, Based on the tissue to be treated.

Processing of the fabric

Once the tissue conditioning agent containing the microcapsules has been applied to the tissue to be treated, the tissue must be used of course, process enough so that the microcapsules break and release the conditioning agent. The microcapsules used in the present invention have such fragility properties that ordinary movement in the Household machine is sufficient to break at least some of the adhering capsules.

The processing of the fabric can be done, for example, by falling back and forth the fabric is placed in an automatic dryer before the dryer. In general, microcapsules that are applied during the automatic drying stage of the washing process are easily broken through the tumble of the dryer broken. It is believed that the microcapsules applied in the dryer are not very are deeply embedded in the spaces between the tissues. The back and forth

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Movement of the dryer is therefore generally sufficient to To break a significant amount of the microcapsules applied in the dryer.

The microcapsules can also be selected so that they can withstand tumbling back and forth in the dryer intact. Microcapsules of this more solid type can help in handling the tissue tear that occurs while wearing or using the fabrics. A significant number of those held by the tissue Microcapsules that survive the dryer will be broken by the normal forces exerted while wearing the so treated Clothing occur. The usual processes such as ironing, folding up, camping can be used for pure laundry that is not being worn or the like serve to break the held microcapsules Z.U.

Items to be added to the dryer for conditioning

of tissues

As already mentioned, the application of the tissue treatment mixture containing the microcapsules takes place during the automatic Household dryness level. Special items to be added to the dryer can be made which are particularly useful for applying the capsules according to the present invention. Such Articles for use in the automatic dryer also form part of the present invention.

These articles contain an effective amount of a microcapsule containing tissue treatment mixture and a dispenser that the Dispensing of the mixture in the automatic v / äs before dryer provided under the drying conditions.

The fabric treatment mix used in these items contains fragile microcapsules and water-insoluble, tissue-substantive transfer agent of the same kind and concentration as described above. The transmission

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medium serves to release the microcapsules to the tissue surface in the V / äs before dryer to facilitate. Ss can also be used as a fabric softener which is applied to the fabrics falling back and forth in the dryer.

As noted, preferred transfer agents for use in articles to be added to the dryer include mixtures of cationic quaternary ammonium compounds and nonionic sorbitan ester compounds. More preferably, the transmission means includes in the V / AES before dryer provided articles about I5 to 75 wt% of a transfer agent selected from di-C -.., ^ Τ o-alkyl-dimethyl ammonium methyl sulfate and about 25 to 85 wt% of a transfer agent selected from C ₁₀ _Cpg alkyl sorbitan mono- and diesters.

It is essential that the microcapsules be in the tissue treatment mixture are in contact with the transmission medium and are preferably completely surrounded by it. In mixtures that are suitable for the production of articles intended for dryers, this can be achieved by using the transfer means melts and clogs the microcapsules with agitation of the molten liquid.

The tissue treating agent may optionally include various conventional ones besides the microcapsules and the transfer agent Contain fabric treatment agents and / or processing aids. These optional components include inorganic softening / antistatic Agents, for example smectite and / or hectorite clays of imperceptible particle size, fragrances, solvents, Emulsifiers, dyes, bactericides, coloring agents and the like.

The articles according to the invention to be added to the dryer use a dispenser to remove the capsule-containing tissue treatment

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mixture among those when operating the automatic tumble dryer effectively releases the prevailing conditions. Such a dispenser can be designed for single or multiple use.

One such article is made from a sponge material that contains enough tissue treatment mixture in a releasable manner encloses, so that you can wash laundry during several drying cycles can effectively treat with it. This reusable item can be made by using a hollow sponge with about 20 grams of the fabric treatment mixture. In use, the transfer medium melts and runs through the pores of the sponge, whereby capsules and transfer agents get onto the tissues. Such a sponge can be used to treat several Fillings can be used in conventional dryers. It has the advantage that it stays in the dryer after use can and is therefore rarely misplaced or lost.

Another object consists of a cloth or paper sack which encloses the fabric treatment mixture in a releasable manner and sealed with the hardened transfer agent. Movement and heat in the dryer open the sack and give the mixture free to perform its various punctures.

Another item consists of an aerosol canister, which contains the treatment mixture under pressure. According to US Pat. No. J5,650 S16, the mixture can be fed into the drying drum from this object released onto the tissues.

Other articles for dispensing fabric treatment mixtures in automatic dryers are disclosed in US-PSS 5,736,668, 3,701,202, 3 654 947, J 6 ^ 3 5 ^ 8 and 5 4 ^ 5 557.

A particularly preferred article according to the invention contains the Tissue treatment mixture in a form suitable for delivery to a

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ocLoi ¹ BoffßTi

Web of paper, textile fleece or textile fabric bound as a substrate. When such an object is placed in an automatic clothes dryer, the heat and back and forth motion the dryer removes the mixture from the substrate and deposits it on the fabric.

The web-like design has several advantages. So can for example, effective amounts of the fabric treatment mixture for use in conventional dryers are readily available through simple Immersion or padding on and sorbed into the web-shaped substrate. The consumer therefore does not need the necessary Measure the amount. Furthermore, the flat design of the web offers a large surface area, which enables the mixture to be effectively dispensed guides the fabrics as the dryer moves back and forth.

The water-insoluble paper, non-woven or tissue substrates, which can be used as dispensers can have a dense or, preferably, open or porous structure. Examples materials suitable as substrates are paper, woven cloth and non-woven cloth. The term "cloth" means a non-woven or non-woven substrate understood, in contrast to "fabric", which refers to the laundry or clothing to be dried and conditioned will.

Particularly preferred "absorbent" paper, tissue or non-woven tissue substrates which are suitable for the present purposes are described in U.S. Patent J5,686,025. It is well known that most substances can be a liquid substance to some extent absorb. In the present description, however, the term "absorbent" refers to a substance with an absorption capacity (this is a parameter which determines the ability of a substrate represents for receiving and retaining a liquid) understood, the 4 to 12 times, and preferably 5 to 7 times the weight volume per liter, based on its own weight

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The absorption capacity is determined according to the US test method UU-T-595t>, which have been modified as follows:

1. Tap water is used instead of distilled water;

2. The sample is immersed for JO seconds instead of 3 minutes;

3. Allow to drain for 15 minutes instead of 1 minute and

4. The sample is immediately weighed on a torsion balance with a weighing pan equipped with upturned edges.

The absorption capacity is then determined in accordance with the test procedure above given formula is calculated. In this test, dense bleached paper has one layer (for example, Kraft paper or fine paper with a basis weight of about 52 g / m) an absorption capacity of 3 * 5 to 4, commercially available towel paper for the household from one layer an absorption capacity of 5 to 6 and commercially available hand towel paper for the household from two layers a capacity of 7 to about 9 * 5

If a substrate is used with an absorption capacity of less than 4, there is a tendency for the to be released too quickly Tissue treatment mixture from the substrate, giving rise to several disadvantages result, including uneven treatment of the Laundry. The use of a substrate with an absorption capacity of more than 12 is undesirable because it is too low Amount of treatment mixture is released in order to treat the laundry in an optimal manner during a normal drying cycle.

As mentioned earlier, suitable materials are suitable for use as Substrates in the articles according to the invention, among other things, sponges, paper, woven cloth and non-woven cloth, all of which must have absorption properties defined above. The preferred substrates consist of cellulose, especially in Fleece shape.

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The preferred non-woven cloth substrate can be generally defined are made up of adhesively interconnected fibers or threads with a woven or carded fiber structure (whereby the Fiber strength is sufficient for carding), or consists of fiber mats in which fibers or filaments are random or random Arrangement (i.e. arrangement of fibers in a carded fabric, in which there is often a partial orientation of the fibers, as well as completely randomly distributed orientation), or are essentially aligned. The fibers or Filaments can be of natural origin (e.g. molle, silk, jute, hemp, cotton, linen, sisal or ramie fiber) or synthetic be (for example rayon, cellulose ester, polyvinyl derivatives, Polyolefins, polyamides and polyesters).

Processes for the production of non-woven cloth are known and do not form part of the present invention. In general, are Such cloths are produced by deposition with air or water, the fibers or filaments initially consisting of long strands in cut the desired lengths, put them in a stream of water or air and then deposit them on a sieve, through which air or water come off. The deposited fibers or filaments are then adhesively bonded together, dried hardened and, if necessary, otherwise treated to form the non-woven cloth. Non-woven fabrics made of polyester, polyamides, Vinyl resins and other thermoplastic fibers can be bonded are (span-bonded) by stretching them on a flat surface and by means of heat or chemical reactions with one another connects (melts).

Preserves the present- .. preferred absorption properties particularly easy with non-woven cloth, whereby you simply build up the thickness of the cloth, i.e. a large number of carded strips or Laying mats on top of one another until a thickness with the required absorption properties is achieved, or by putting on the sieve a sufficiently thick fiber layer is deposited. You can do anyone

. 6 0 9852/0742

any diameter or denier of the fibers (generally up to about 10 denier) as long as there is the gap between the pasers is that the dicize of the cloth directly to whose absorption capacity relates, which also makes the fleece cloth particularly suitable for impregnation with the tissue treatment mixture due to capillary action. You can therefore use any thickness that is required to achieve the required Absorption capacity is required.

the eggs

By choosing binder resins used in the manufacture of non-woven fabrics one can produce substrates with various desirable properties. For example, you can use the absorption capacity increase, decrease or regulate the cloth by using a hydrophilic or hydrophobic binder resin or mixtures thereof. When used alone or as a predominant component, the hydrophobic binder resin results in a hydrophobic / hydrophilic one Mixture of non-woven fabrics, which are particularly useful as substrates for items that are in the automatic dryer together with hissed tissues are used.

If the substrate for the mentioned item consists of a non-woven cloth from random or in a random arrangement on the If fibers are deposited on the sieve, the objects have excellent strength in all directions and they do not tear or otherwise disperse when used in automatic clothes dryers.

The non-woven cloth is preferably deposited from water or air and made from cellulose fibers, in particular regenerated cellulose or made of rayon. Such a non-woven cloth can be sized with any conventional textile size. Preferably wears the fiber length 0.48 to 5.1 cm, the thickness 1.5 to 5 denier. Preferably the fibers are also at least partially randomly oriented, and with a hydrophobic or essentially hydro-

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phobic binder resin adhesively bonded to one another, in particular with a non-ionic self-crosslinking acrylic polymer (or polymers). Preferably, the cloth about 70 wt.% And 350 wt parsers are.% Ssinderharz on at a basis weight of about 21.5 to 28.6 g / m ^2.

The preferred objects for conditioning textiles according to the present invention are designed so that they are compatible with the construction of conventional laundry dryers. Preferably the articles of the invention are used in automatic washer-dryers, but equivalent machines can be used and in some cases heating and drying air can be omitted during part or all of the process. In general, however, heated air is used and this air is often circulated in the dryer. Usually there are about 5 to 50 changes in the volume of air in the drying drum per minute, and the air is moving at about 5 * 5 to 4.9 obm per minute. This creates a pulling or suction effect, which can lead in particular to small pieces of ash such as socks, handkerchiefs or the like, or the object used for fabric conditioning reaching the area of the air outlet of the dryer. A typical load of laundry of about 1.8 to K kg dry weight fills about 10 to 70 % of the interior space of most dryers and usually causes few problems. In general, there will be a sufficient number of objects falling back and forth to prevent one another from being pulled to or through the exhaust vent. However, if the object intended for tissue conditioning gets in front of the air outlet opening in such a way that it blocks the passage of air, undesired temperature increases can take place. Objects that are made with solid or wash-like transfer agents under normal conditions, such as quaternary ammonium compounds and / or sorbitan esters, which often melt under the action of heat, can be placed at the air outlet opening

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stick, stay.

The problem of a blockage of the air passage can be solved by providing openings in the object in accordance with the proposals of BE-PSS 815 204 and 8lj5 205. In particular For example, slots or holes can be cut through the substrate to allow air to pass freely.

The slot-shaped openings are in the preferred articles for conditioning tissues according to the present invention for two main reasons. In particular, allow the slots allow air to pass if the object lies in a blocking manner in front of the air outlet opening. Further give the slot-shaped openings a flexibility or pliability, so that the object wrinkles or folds lays. The effect of this process means that "only part of the air outlet opening is covered by the object, if this is carried by the air flow to the outlet opening. Further it is easier to remove a crumpled or folded object from falling items of laundry from the outlet opening than an object lying smoothly over this opening.

The type and number of slot openings can be very different, depending on the substrate material and its own flexibility or rigidity, the type of fabric treatment mixture the substrate is to support, and the extent to which the reinforced Air passage through the substrate is desired. Preferred articles according to the present invention contain a large one Number of small slots of different configuration, or fewer larger slots. For example, you can have a single straight line or undulating slit or several, which are limited to the area of a track and more closely opposite End of the edges of the object, use. By keeping a seam around all sides of the conditioning item, will the desired degree of flexibility and accessibility of the upper

609852/0742

Keep flat parts for the falling V / aes. Rectilinear For example, slots can run to the edge of the article, but the slots are limited to the area of the article is preferred if one wants to pack the article in roll form for the sake of simplicity.

According to a preferred embodiment of the invention, a web-shaped article for fabric conditioning provided with a plurality of rectilinear slots, polygons in one Extend direction, for example in the running direction of the web-shaped Substrate, these are essentially parallel to each other. The slots can be in series or staggered. A preferred one Embodiment contains 5 to 9 such slots, which look up to a distance of about 5 * and preferably 2.5 cm from the Extend the edge of the substrate, for example 2j5 χ 28 cm in size is.

The slot-shaped openings in the objects can be different Own shapes and sizes. In some cases, C-, U-, or V-shaped slots are recommended. These slots that are in continuous or arranged in a regular or irregular pattern .sind are desirable in that they result in grid-like or flat structures that allow air to pass through.

As an alternative to slots, the flexible substrates can also be provided with one or more openings with a diameter of approximately 0.05 to approximately 10 cm, approximately 5 to approximately 40 % of the surface consisting of these openings. The openings can be present in any desired expedient relationship to one another, but the simplest way is to punch the openings in rows through the substrate with uniform spacing. However, the openings do not necessarily have to be punched through the substrate, but they can simply result when using porous substrates.

. 609852/0742

As already mentioned, the articles according to the invention contain a tissue treatment device in combination with a dispenser, which is used to dispense the mixture among those in an automatic Tumble dryer is suitable for the prevailing conditions. Preferred articles are those that have an absorbent substrate is impregnated or coated with the fabric treatment agent. The impregnation or coating can be any more expedient Manner, and numerous suitable methods are known. For example, the treatment mixture can be used in Simply spray liquid form onto the substrate.

The flexible substrate dispenser can either be "coated" or "impregnated" with the treatment mixture. be. Coating is the application of one substance to the outer surface of another; understands by impregnation one penetration of the entire substrate, internally and externally. On is the absorption capacity of a given substrate the influencing factor is its free space. When a plasticizing agent is applied to an absorbent substrate, so it penetrates into the free space, the substrate; is then considered impregnated. The free space in a substrate is less Absorbency like Kraft or fine paper from one layer is very limited. Such a substrate is therefore called "dense" designated. While a small amount of the fabric treatment mixture penetrates into the limited space available in a dense substrate, a substantial residue penetrates of the mixture and remains on the surface of the substrate where it is considered a coating. It is believed that the difference between coating and impregnation explains the fact that with impregnated substrates according to the present Invention the staining of the laundry is eliminated or substantially reduced, which is the case with the use of a coated dense substrate observed.

509852/0742

According to a method for producing the preferred impregnated, The absorbent substrate made of a flat structure becomes a microcapsules, transfer medium and any additives containing tissue treatment agent applied to absorbent paper or non-woven cloth, the general under the The method used is called "padding". The mixture is preferably applied to the substrate in liquid form. Tissue treatment mixtures, which are usually solid at room temperature, should therefore first be melted and / or with solvent be treated. Methods for melting the treatment mixture and / or for solvent treatment are known and can can be carried out easily so that a satisfactorily treated substrate is obtained.

According to a further preferred method, the tissue treatment mixture is used Filled in liquefied form into a trough which can be heated, so that the mixture is in liquid form remain. The liquid tissue treatment mixture contains the microcapsules and optionally the desired optional additives.

A roll of absorbent paper (or cloth) will then be so

f
attached to a device that it can unwind freely. As the paper or cloth unwinds, it runs downwards, is submerged and passes through the trough containing the liquid treatment agent, and at a sufficiently slow speed that sufficient impregnation takes place. The absorbent paper or towel then moves back up through a pair of rollers that remove excess bath liquid, so that a paper or towel with about 1 to about 12 g of fabric

Mixture is created per 645 to 9 ^ 5 cm of substrate web. That Impregnated paper or cloth is then cooled to room temperature, can then be folded and cut into even lengths or perforated and then packaged and / or used will.

When applying the fabric treatment mixture to the absorbent Substrate is the amount of mixture. That impregnates

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or is coated, expediently in a weight ratio of about 10: 1 to 0.5: 1 * based on the total fabric treatment mixture to dry, untreated substrate (Paser plus binder). Preferably the weight ratio is between fabric treatment mix and substrate at about 5: 1 to about 1: 1, and especially preferably at about 3: 1 to 1: 1.

After application of the liquified tissue treatment mixture, the articles are held at room temperature until the mixture has solidified. The resulting dry articles, which were produced while observing the above proportions of mixture: substrate, remain flexible. The web-shaped substrates are suitable for packaging in rolls. The web-like objects can also at any any time during the manufacturing process vile, described above, slotted or punched.

example 1

A fabric-conditioning article in the form of a sheet-like structure to be added to the tumble dryer is produced by impregnating a flexible nonwoven substrate with a liquefied, capsule-containing fabric treatment mixture. The substrate consists of about 70 % rayon fiber and about 30 % polyvinyl acetate binder. The fibers used were approximately 4 cm long and 3 denier thick. The substrate had an absorption capacity of about 6.5 * it is supplied in the form of a roll containing tear-off sheets of 23 × 28 cm in size.

The flexible substrate is impregnated with a fabric treatment mixture containing fragile, fragrance-like microcapsules and cationic and non-ionic transfer agents. The microcapsules used in this mixture were produced by interfacial polymerization according to US Pat. No. 3,516,9 ^ -1. The capsules contain a liquid core (8θ % of the capsules) with lemon perfume and a shell made of urea / formaldehyde (20 fo der

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Capsule) that surrounds the nucleus. The capsule shell has a middle one Thickness of about 1.5 microns, the mean diameter of the water-insoluble Microcapsules is about 40 microns.

The cationic component of the fabric treatment mixture consists of ditallow dimethyl ammonium methyl sulfate (94 % actives), which is available as a commercial product (Ashland Chemical Company).

The non-ionic component of the fabric treatment mixture consists of sorbitan C-jg and -C, o-alkyl mono, di, tri and tetra esters, isosorbide and small amounts of sorbitol (commonly referred to as "sorbitan ester"), them is available as a commercial product under the name "Glycomul S". This sorbitan ester component contains about 1 % 1,4-sorbitan tallow alkyl monoesters, about 35 % 1,4-sorbitan tallow alkyl diesters, about 12 % of the tallow alkyl tri- and tetraesters of 1,4-sorbitan and about 15 % isosorbide.

The cationic and non-ionic components of the fabric treatment mixture are liquefied by heating and the microcapsules are stirred into the liquid mixture. The substrate is then passed through the liquid mixture in such a way that the mixture penetrates the absorbent substrate material can. The substrate material is then cooled so that the fabric treatment mixture hardens, a roll of impregnated Forms substrate material. This roll is 23 cm wide and perforated at intervals of 28 cm so that sheets can be torn off. Each bow comes with a group of knives 6 parallel slots at a distance of 3 cm from each other, the average length of the slots is 12.7 to 17 * 8 cm.

Each sheet of 23 χ 28 cm has the following approximate composition:

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Substrate 1.5 g

total fabric treatment mixture 2.95 g

cationic component 1.9 g

non-ionic component 0.8 g

Microcapsules "0.25 g mixture / substrate, weight ratio 1.97: 1.

An impregnated sheet of the type described above can be used in the domestic tumble dryer to simultaneously to soften the laundry and to give it a fragrance. A significant number of microcapsules will pop up from the substrate Transferring the items of laundry falling back and forth, where they are broken open by the falling movement of the items of laundry in the dryer will.

A substantially similar article is obtained if, in Example 1, the fabric treatment mixture is about 1.9 grams of the nonionic component and about 0.8 grams of the cationic component contains.

A substantially similar object is also obtained if, in Example 1, the cationic and nonionic components of the Fabric treatment mixture can be replaced with about 2.6 grams of the nonionic component alone.

An essentially similar object is also obtained if, in Example 1, the fabric treatment mixture additionally contains about 0.2 g of a smectite clay ("Gelwhite gP *)" .

Evaluation of the capsule transition

Items to be added to the automatic dryer for fabric conditioning * According to the present invention, their ability to deliver fragrance-containing microcapsules to tissue, that are moved back and forth in the dryer with these capsules.

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Articles substantially similar to the article of Example 1 with varying amounts of encapsulated fragrance are compared to analogous articles containing equivalent amounts of fragrance but not encapsulated, assessing the ability to impart a perfume odor to the treated fabrics. For this assessment, samples made of terry cloth are washed and rinsed in a conventional manner and then placed in automatic dryers made by Kenmore together with the objects to be tested made of flexible substrate and conditioning agent. The dryers operate for 45 minutes, then the dry test fabrics are removed from the dryer, folded to l / k and wrapped in aluminum foil to prevent odor contamination. The test samples are then evaluated with regard to their odor by at least three trained testers. Each sample is evaluated immediately after drying and again after 1 or 2-day breaks. The ratings are based on a rating of 0 to 10, with 0 indicating no noticeable odor from the fabric and 10 indicating an overwhelming odor.

The following table shows the mean values of these measurements.

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Table I.

Fragrance amount Time of g / item evaluation

Odor value not encapsulated encapsulated

0.042 at first 0.042 1 day 0.042 2 days 0.042 4 days 0.084 at first 0.084 1 day 0.084 2 days 0.084 4 days

5.1

1.7
1.6

6.7

6.4
-3.6
2.4

6.5 5.9 6.5 2.0

7.8 7.3 7.6 3.6

The values from the above table show that articles using a fragrance in microcapsules generally do the smell of the fragrance is passed on to the treated fabric more effectively than analog articles that do not encapsulate the fragrance in Μχ% ο insert.

Will the samples that come with the objects containing the microcapsules were treated, rubbed against each other, the testers can determine an increase in the fragrance intensity. From this can concluded that at least some of the fragile microcapsules are in the dryer of the articles of the invention pass to the tissues.

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Claims (19)

Claims 1. A method for conditioning tissues, characterized in that that he A. An effective amount in an automatic laundry dryer a laundry treatment mixture applied to fabric, wherein the mixture of I. water-insoluble, breakable microcapsules of about to 500 microns, each microcapsule being substantially the end a) a liquid core which contains the fabric conditioning agent and b) a solid, thin polymer shell which completely surrounds the core, there being a middle one Has a thickness of about 0.1 to 50 microns, and II. An essentially water-insoluble, tissue-substantive transfer agent with a melting / softening point between about 40 and 150 ⁰ C, wherein the transfer agent is in contact with the microcapsules in the tissue treatment mixture and wherein the weight ratio of microcapsules to transfer agent in the mixture is between about 0.002: 1 and 2: 1, the fabric treatment mixture being applied to the laundry in such a way that at least some of the microcapsules are bound to the fabric to be treated, and B. processed the tissue so that at least some of the microcapsules tear and the tissue conditioning agent is released. 2. The method according to claim 1, characterized in that one uses such an amount of tissue treatment mixture that a concentration of microcapsules of about 0.002 to 0.2% by weight on the handling weight of the fabric, where fer * 609852/0742 the transfer medium completely surrounds the microcapsules. 3. The method according to claim 2, characterized in that a) the fabric conditioning agent used is a fragrance compound is, b) the wall of the microcapsules made of polyurethane, polyolefin, polyamide, polyester, polysaccharide, silicone resin, epoxy resin or amino resins composed of urea and aldehydes and c) the transfer agent composed of cationic or nonionic organic materials or mixtures thereof consists. 4. The method according to claim ~ 5, characterized in that quaternary ammonium salts, C ₁₀ - Oh "alkyl sorbitan esters, fatty monoalcohols, Co_ ₂ o ~ ^{A - lic3rldiester} of glycerol, C, ₀ -, n-alkyl glycerol mono- or -diester or C-jp_2Q-alkylated or acylated diamine compounds are used. 5. The method according to claim 4, characterized in that the material of the microcapsule shells is a urea / formaldehyde polymer and the mean shell thickness is about 0.4 to 4.0 Microns. 6. The method according to claim 5 *, characterized in that quaternary ammonium salts, C, ₀ _p2j. ~ Alkyl sorbitan esters or mixtures thereof are used as the transfer agent. 7. The method according to claim 6, characterized in that A. the size of the microcapsules between about 10 and 100 microns and B. the weight ratio of microcapsules to transfer agent between about 0.1: 1 and 0.2: 1. 609852/0742 8. Object for tissue conditioning in an automatic V / äs before dryer, characterized by A. An effective amount of a fabric treatment agent consisting of I. water-insoluble, breakable microcapsules of about 5 to 500 microns, each capsule consisting essentially of a) a liquid core containing the fabric conditioning agent contains, and b) consists of a solid thin polymer shell, which the Completely surrounds the core, the shell having an average thickness of about 0.1 to 50 microns, and II.a substantially water-insoluble, tissue-substantive transfer agent with a melting / softening point between about HO and 150 ⁰ C, wherein the transfer agent is in contact with each of the "microcapsules in the tissue treatment mixture, wherein the weight ratio of microcapsules to transfer agent in the mixture is between about 0.002: 1 and 2: 1, and B. a dispenser that is responsible for the release of the tissue treatment mixture in an automatic washer dryer below that Operating conditions causes. 9. The article of claim 8, characterized in that A. the dispenser consists of an absorbent substrate with an absorbent capacity of approximately 4 to 12, B. the fabric treatment mixture in a weight ratio of mixture to dry substrate of about 5: 1 and 1: 1 is present and C. the transfer medium completely surrounds the microcapsules. 10. The article according to claim 9, characterized in that it contains a) a fragrance compound as a fabric conditioning agent, 609852/0742 b) the shell of the microcapsules made of polyurethane, polyolefin, Polyamide, polyester, polysaccharide, silicone resin, epoxy resin or aminoplast polymers composed of urea and aldehydes and c) the transfer medium consists of cationic or non-ionic organic materials or mixtures thereof. 11. The article of claim 10, characterized in that the The absorbent substrate is present as a sheet and is mixed with the fabric treatment mixture in a weight ratio impregnated to dry substrate of about ^: 1 to 1: 1 is. 12. The article according to claim 11, characterized in that the transfer agent consists of cationic quaternary ammonium compounds, non-ionic sorbitan ester compounds or of mixtures of these cationic and non-ionic compounds consists. 13 · Object according to claim 12, characterized in that the The shell of the microcapsules consists of a urea / formaldehyde polymer and has an average thickness of about 0.4 to 4 microns. 14. Article according to claim 13, characterized in that the absorbent substrate consists of a flexible non-woven cloth made of cellulose fibers, these fibers having a length of 0.48 to 5 * 1 cm and a thickness of 1.5 to 5 denier and the substrate is bonded with a binder resin. 15 · article of claim 14, characterized in that the transmission means about 15 to 75 wt.% Di-C, _i, _ ₁ g-alkyldime thylammoniumme thy! Sulfate and about 25 to 85 wt.% C _1n ^ r- alkyl Contains sorbitan mono- and diesters. 609852/0742 l6. Object according to claim I5, characterized in that the flexible substrate has openings whose size and Sufficient number to restrict airflow through to degrade an automatic dryer. 17 · Object according to claim l6, characterized in that A. The size of the microcapsules is about 10 to 100 microns and B. the weight ratio of microcapsules to transfer agent between about 0.1: 1 and 0.2: 1. 18. Article according to claim 12, characterized in that the fabric treatment mixture additionally contains an effective amount of smectite or hectorite clay. 19. The object of claim 9 * characterized in that the dispenser is an aerosol spray device. For: The Procter & Gamble Company Cincinnati! Ohio, V.St.A. Dr H.J. Wolff Lawyer 609852/074 2