JP2019035074A - Use of a combination of a cationic polysaccharide polymer and an anionic non-soap surfactant - Google Patents

Abstract

A cleaning process is provided that enhances the adhesion of softening actives to fabric during a rinse cycle following fabric washing with laundry detergent. A combination of a cationic polysaccharide polymer and an anionic non-soap surfactant is used to improve the adhesion of the softening active to the fabric. The combination of the cationic polysaccharide polymer used to treat the fabric in the wash liquor and the anionic non-soap surfactant adds to the fabric softening active material used during treatment of the fabric in the subsequent rinse. Improve adhesion. [Selection diagram] Fig. 1

Description

  The present invention relates to the use of cationic polysaccharides and anionic non-soap surfactants, and to the use of laundry detergent compositions comprising the above cationic polysaccharides and anionic non-soap surfactants.

  During the operation of washing the laundry, consumers prefer both to clean the fabric and to impart a fabric softening effect to the fabric. This is accomplished by washing the fabric in the main wash step using a laundry detergent and then adding the fabric softening active to the fabric during the subsequent rinse step.

  However, it is desired to improve the softening effect obtained with the softening active substance. Preferably, from an environmental sustainability perspective, it is also desirable to reduce the overall amount of softening active used without affecting the overall softening effect on the fabric. . More specifically, it is believed that some of the softening active material present in the rinse liquid does not adhere to the fabric during the cleaning operation and is discharged with the rinse water. This detracts from the flexibility performance of the fabric and has a detrimental effect on environmental sustainability.

  Accordingly, there remains a need for a cleaning process that improves the adhesion of the softening active material to the fabric during the rinse cycle.

  Surprisingly, the combination of the cationic polysaccharide polymer and the anionic non-soap surfactant used to treat the fabric in the first wash liquor allows fabric softening during fabric treatment in subsequent rinses. It has been found to improve the adhesion of active substances to fabrics.

  This synergistic advantage of the cationic polysaccharide polymer and the anionic non-soap surfactant makes it possible to reduce the level of fabric softening active used to achieve the desired fabric softening effect. It was.

A first aspect of the present invention is the use of a combination of a cationic polysaccharide polymer and an anionic non-soap surfactant in the first fabric treatment liquid,
Improving the adhesion of the softening active material to the fabric when the softening active material contacts the fabric in another subsequent second fabric treatment liquid;
Use wherein the fabric is first contacted with the first fabric treatment liquid.

1 shows a water soluble unit dose article according to the present invention. FIG.

Use The present invention relates to the use of a combination of a cationic polysaccharide polymer and an anionic non-soap surfactant in a first fabric treatment solution, wherein the softening active agent is contained in another subsequent second fabric treatment solution. The invention relates to the use of improving the adhesion of the softening active substance to the fabric when in contact with the fabric, wherein the fabric is first contacted with the first fabric treatment liquid.

  Preferably, the first fabric treatment liquid comprises 0.1 ppm to 100 ppm, preferably 0.5 ppm to 50 ppm, more preferably 1 ppm to 20 ppm of cationic polysaccharide polymer.

  Preferably, the first fabric treatment liquid comprises 10 ppm to 1000 ppm, preferably 50 ppm to 900 ppm, more preferably 100 ppm to 800 ppm non-soap anionic surfactant.

  Cationic polysaccharide polymers and anionic non-soap surfactants are described in more detail below.

  One skilled in the art will know how to make the first fabric treatment solution. Without wishing to be bound by theory, the first fabric wash contains water, and the cationic polysaccharide polymer and the anionic non-soap surfactant are contained in the water. The cationic polysaccharide may be completely dissolved in water, partially dissolved in water, dispersed in water, or a mixture thereof, preferably completely. Is dissolved. The anionic non-soap surfactant may be completely dissolved in water, partially dissolved in water, dispersed in water, or a mixture thereof. Preferably dissolved completely.

  The first fabric treatment liquid can be generated automatically in the drum of an automatic washing machine or can be made in a manual cleaning operation.

  Preferably, the first fabric treatment liquid comprises 0 ppm to 200 ppm, preferably 5 ppm to 150 ppm, more preferably 10 ppm to 100 ppm of fatty alcohol ethoxylate nonionic surfactant.

  Preferably, the first fabric treatment liquid comprises less than 300 ppm, preferably 5 ppm to 250 ppm, more preferably 10 ppm to 200 ppm fatty acid, neutralized fatty acid soap, or mixtures thereof.

  The first fabric treatment liquid may contain 1 L to 64 L, preferably 2 L to 32 L, more preferably 3 L to 20 L of water.

  The fabric first comes into contact with the first fabric treatment liquid. When made in the drum of an automatic washing machine, it is customary to add the fabric to be washed to the drum and close the door of the washing machine. The cationic polysaccharide polymer and the anionic non-soap surfactant can be added to the drum along with the fabric, or may be added to the dispensing drawer of the washing machine.

  The fabric to be washed may be any suitable fabric. Fabric, according to the inventors, preferably means a woven fabric or fabric comprising a network of natural or synthetic fibers. One skilled in the art will recognize suitable fabrics. The fabric may be selected from cotton, polyester, cotton / polyester blend, or mixtures thereof, preferably cotton. The fabric may contain stains, soils, or mixtures thereof to be removed. Those skilled in the art will recognize suitable stains or soils to remove.

  The use of the combination of the cationic polysaccharide polymer and the anionic non-soap surfactant in the first fabric treatment liquid allows the softening active to contact the fabric in another subsequent second fabric treatment liquid. This is to improve the adhesion of the softening active substance to the fabric.

  The second fabric treatment liquid preferably comprises 1 to 500 ppm, preferably 10 to 400 ppm, most preferably 20 to 300 ppm of the softening active material.

  The second fabric treatment liquid may contain 1 L to 64 L, preferably 2 L to 32 L, more preferably 3 L to 20 L of water.

  The first and second fabric treatment liquids may comprise water of any arbitrary hardness, preferably between 0 g / L and 0.68 g / L (0 gpg to 40 gpg). Lower hardness water is called soft water, and higher hardness water is called hard water.

  One skilled in the art will know how to make the second fabric treatment solution. Without wishing to be bound by theory, the second fabric cleaning liquid includes water and a softening active material contained in the water. The softening active substance may be completely dissolved in water, partially dissolved in water, dispersed in water, or a mixture thereof.

  The second fabric treatment liquid can be generated automatically in the drum of an automatic washing machine or can be made in a manual cleaning operation.

  Preferably, the first fabric treatment liquid, the second fabric treatment liquid, or both comprise 1 kg to 20 kg, preferably 3 kg to 15 kg, most preferably 5 kg to 10 kg.

  Preferably, the first fabric treatment liquid, the second fabric treatment liquid, or both are present in the automatic washing machine.

  Preferably, the first fabric treatment liquid is at a temperature of 5 ° C to 90 ° C, preferably 10 ° C to 60 ° C, more preferably 12 ° C to 45 ° C, and most preferably 15 ° C to 40 ° C. Preferably, the first fabric treatment step is completed for 5 minutes to 50 minutes, more preferably 5 minutes to 40 minutes, more preferably 5 minutes to 30 minutes, even more preferably 5 minutes to 20 minutes, most preferably Preferably it takes 6-18 minutes.

  Preferably, the second fabric treatment liquid is at a temperature of 5 ° C to 30 ° C, preferably 5 ° C to 25 ° C, more preferably 5 ° C to 20 ° C, and most preferably 5 ° C to 15 ° C. Preferably, the second fabric treatment step takes 1 to 30 minutes, preferably 2 to 25 minutes, more preferably 3 to 20 minutes, most preferably 5 to 15 minutes to complete.

  Preferably the fabric is transferred directly from the first fabric treatment liquid to the second fabric treatment liquid, preferably the first fabric treatment liquid and the second fabric treatment liquid are separated separately in the same drum of the automatic washing machine. Formed.

  While not wishing to be bound by theory, transferring the fabric may involve removing the fabric from the first processing liquid or draining the first processing liquid from the fabric. In the operation of the automatic washing machine, it is preferable to discharge the first treatment liquid from the fabric. To avoid doubt, a portion of the fabric treatment liquid may remain in the fabric after separating the fabric and the first treatment liquid, i.e., the fabric may remain wet. In the context of the present invention, once the fabric has been separated from the majority of the first treatment liquid, or when the majority of the first treatment liquid has been drained, some remaining first treatment liquid remains in the fabric. Even if possible, the fabric and the first fabric treatment liquid are considered separated from each other.

  When made in the drum of an automatic washing machine, it is customary that the fabric remains in the drum of the washing machine after draining the first treatment liquid. Next, the washing machine automatically generates the second treatment liquid including the fabric. Preferably, the fabric is not removed from the drum of the washing machine before generating the second treatment liquid. Preferably, once the first treatment liquid has been drained, the washing machine will be within 30 minutes, preferably within 20 minutes, more preferably within 10 minutes, and most preferably within 5 minutes after removal of the first treatment liquid. 2 treatment liquid is produced | generated.

  Preferably, the cationic polysaccharide polymer and the anionic non-soap surfactant are present in a laundry detergent composition that is diluted 300-3000 times in water to produce a first fabric treatment liquid.

  The laundry detergent composition preferably includes other common laundry detergent ingredients. The laundry detergent composition may be in any suitable form. The laundry detergent composition may be a powder, a liquid, or a mixture thereof.

  The solid laundry detergent composition may include solid particles or may be a single homogeneous solid. Preferably, the solid laundry detergent composition comprises particles. This means that the solid laundry detergent composition contains individual solid particles as opposed to the solid being a single homogeneous solid. The particles may be free-flowing or may be compressed, preferably free-flowing.

  The term “liquid laundry detergent composition” refers to any laundry detergent composition that includes a liquid capable of wetting and treating a fabric, including but not limited to liquids, gels, pastes, dispersions, and the like. . Liquid compositions may contain solids or gases in appropriately divided forms, but liquid compositions exclude forms that are not entirely fluid, such as powders, tablets or granules.

  The laundry detergent composition may be present in a water soluble unit dose article, wherein the water soluble unit dose article comprises a water soluble film.

  The water soluble unit dose article includes a water soluble film and a laundry detergent composition. Laundry detergent compositions and water-soluble films are described in more detail below.

  The water soluble unit dose article includes a water soluble film shaped such that the unit dose article includes at least one internal compartment surrounded by a water soluble film, and the laundry detergent composition is present in the compartment. The unit dose article may include a first water soluble film and a second water soluble film that are sealed together to define an internal compartment. The water soluble unit dose article is configured to prevent the laundry detergent composition from leaking out of the compartment during storage. However, when a water soluble unit dose article is added to water, the water soluble film dissolves and the contents of the inner compartment are released into the cleaning liquid.

  A compartment should be understood to mean a sealed interior space within a unit dose article that holds a detergent composition. During manufacture, the first water-soluble film may be in a shape that includes an open compartment to which the detergent composition is added. Next, a second film is placed on the first film in a direction to close the opening of the compartment. Next, the first film and the second film are combined into one along the sealing region and sealed.

  A unit dose article may comprise two or more compartments, even at least two compartments, or even at least three compartments. The compartments may be arranged in the overlapping direction, i.e. one positioned on the other. In this direction, the unit dose article includes three upper, middle and lower films. Alternatively, the compartments may be located in a side-by-side direction, i.e., in a direction where one is adjacent to the other. Furthermore, the compartment may be in the direction of the “tire and rim” arrangement, ie, the first compartment is located adjacent to the second compartment, but the first compartment is at least partially part of the second compartment. But does not completely enclose the second compartment. Alternatively, one compartment may be completely enclosed within another compartment.

  If the unit dose article includes at least two compartments, one of the compartments may be smaller than the other compartment. If the unit dose article includes at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartment may be overlaid on the larger compartment. The overlapped compartments are preferably side by side.

  In a multi-compartment orientation, the laundry detergent composition according to the present invention may be included in at least one of the compartments. For example, the composition may be contained within only one compartment, or may be contained within two compartments, or even within three compartments.

  Each compartment may contain the same composition or different compositions. The different compositions may all be in the same form, or they may be in different forms.

  The water soluble unit dose article can include at least two internal compartments, the liquid laundry detergent composition is included in at least one of the compartments, preferably the unit dose article includes at least three compartments, and the detergent composition is the compartment. Included in at least one of the following.

  FIG. 1 discloses a water-soluble unit dose article (1) according to the present invention. The water-soluble unit dose article (1) includes a first water-soluble film (2) and a second water-soluble film (3) that are sealed together at the sealing region (4). The laundry detergent composition (5) is contained in a water soluble soluble unit dose article (1).

  The film of the present invention is water-soluble or water-dispersible. Preferably, the water-soluble film has a thickness of 20 μm to 150 μm, preferably 35 μm to 125 μm, even more preferably 50 μm to 110 μm, and most preferably about 76 μm.

  Preferably, the water solubility of the film is at least 50%, preferably at least 75%, or even at least 95% (measured by the method described herein after use of a glass filter with a maximum pore size of 20 μm).

  To a pre-weighed 3 L beaker, add 5 grams ± 0.1 grams of film material and add 2 L ± 5 mL of distilled water. The magnetic stirrer Labline model No. Stir vigorously with 1250 or equivalent and 5 cm magnetic stir bar at 30 ° C. for 30 minutes. The mixture is then filtered through a folded qualitative analytical sintered glass filter with a pore size (up to 20 μm) as defined above. Water is dried from the collected filtrate by any conventional method and the weight of the remaining material is determined (this is the dissolved or dispersed fraction). The percentage of solubility or dispersibility can then be calculated.

  The preferred film material is preferably a polymer material. The film material can be obtained by known methods in the art, for example, cast molding, blow molding, extrusion or blow extrusion of polymer materials.

  Preferred polymers, copolymers or derivatives thereof suitable for use as pouch materials are polyvinyl alcohol, polyvinyl pyrrolidone, polyalkylene oxide, acrylamide, acrylic acid, cellulose, cellulose ether, cellulose ester, cellulose amide, polyvinyl acetate, polycarboxylic acid. Selected from natural rubbers such as acids and salts, polyamino acids or peptides, polyamides, polyacrylamides, maleic / acrylic acid copolymers, polysaccharides including starch and gelatin, xanthan and gum arabic. More preferred polymers are selected from polyacrylates and water-soluble acrylate copolymers, methylcellulose, sodium carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, maltodextrin, polymethacrylate, most preferably polyvinyl alcohol, polyvinyl alcohol copolymer and It is selected from hydroxypropyl methylcellulose (HPMC), and combinations thereof. Preferably, the concentration of polymer, eg, PVA polymer, in the pouch material is at least 60%. The polymer may have any weight average molecular weight, preferably from about 1000 to 1,000,000, more preferably from about 10,000 to 300,000, even more preferably from about 20,000 to 150,000.

  Mixtures of polymers and / or copolymers, in particular polyvinyl alcohol polymers and / or copolymers, in particular polyvinyl alcohol homopolymers, and / or preferably sulfonated and carboxylated anionic polyvinyl alcohol copolymers, in particular carboxylated anionic polyvinyl alcohol Mixtures of anionic polyvinyl alcohol copolymers selected from copolymers can also be used as pouch materials. Most preferably, the water soluble film comprises a blend of a polyvinyl alcohol homopolymer and a carboxylated anionic polyvinyl alcohol copolymer.

  Preferred films are those that exhibit good dissolution in cold water, i.e. unheated distilled water. Preferably, such films exhibit good dissolution at a temperature of 24 ° C, even more preferably at 10 ° C. Good dissolution means that the water solubility of the film measured by the method described herein is at least 50%, preferably at least 75%, or even at least after using a glass filter with a maximum pore size of 20 μm as described above. It means 95%.

  Preferred films include those supplied by Monosol as product reference numbers M8630, M8900, M8779, M8310.

  The film may be opaque, transparent or translucent. The film may include printed areas.

  The printed area can be obtained using standard techniques such as flexographic printing or inkjet printing.

  The film may contain an aversive agent, such as a bitter agent. Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof. Any suitable concentration of aversive agent may be used in the film. Suitable concentrations include, but are not limited to, 1 to 5000 ppm, or even 100 to 2500 ppm, or even 250 to 2000 rpm.

  The softening active may be present in a fabric softening composition that is diluted 300 to 3000 times in water to produce a second fabric treatment liquid. The fabric softening composition may include other common fabric softening composition components.

  The softening composition may be in any suitable form. The softening composition may be a powder, liquid, or a mixture thereof.

  The softening composition may comprise solid particles or may be a single homogeneous solid. Preferably, the solid softening composition comprises particles. This means that the solid softening composition contains individual solid particles as opposed to being a single homogeneous solid. The particles may be free-flowing or may be compressed, preferably free-flowing.

  The term “liquid laundry softening composition” refers to any laundry softening composition that includes a liquid capable of wetting and treating a fabric, including liquids, gels, pastes, dispersions, and the like. It is not limited. Liquid compositions may contain solids or gases in appropriately divided forms, but liquid compositions exclude forms that are not entirely fluid, such as powders, tablets or granules.

Anionic non-soap surfactant Preferably, the non-soap anionic surfactant comprises a linear alkyl benzene sulfonate, an alkoxylated alkyl sulfate, or a mixture thereof, more preferably a mixture thereof, which is alkoxylated with the linear alkyl benzene sulfonate. The weight ratio of alkyl sulfate is preferably that of linear alkylbenzene sulfonate and ethoxylated alkyl sulfate is 1: 2 to 20: 1, preferably 1.1: 1 to 15: 1, more preferably 1.2: 1 to 10: 1, even more preferably 1.3: 1 to 5: 1, most preferably 1.4: 1 to 3: 1.

  The weight ratio of linear alkylbenzene sulfonate to ethoxylated alkyl sulfate can be 1: 10-20: 1, preferably 1: 7-3: 1, more preferably 1: 5-1.5: 1.

  Next, when blended in a laundry detergent composition, the laundry detergent composition is 50% or less, preferably 5% to 50%, more preferably 7.5% to 45%, even more preferably 10% to 40% may be included. The laundry detergent composition may comprise 12% to 37%, preferably 15% to 30%, by weight of the laundry detergent composition of a non-soap anionic surfactant.

Cationic polysaccharide polymer Preferably, the cationic polysaccharide polymer is cationically modified hydroxyethylcellulose, cationically modified hydroxypropylcellulose, cationic and hydrophobically modified hydroxyethylcellulose, cationic and hydrophobically modified hydroxypropylcellulose, or mixtures thereof, more preferably cationically modified hydroxy It is selected from ethyl cellulose, cation and hydrophobically modified hydroxyethyl cellulose, or mixtures thereof.

  Preferably, the cationic polysaccharide is in particulate form, preferably the particulate cationic polysaccharide has an average D90 diameter of less than 300 μm, more preferably less than 200 μm, and even more preferably less than 150 μm. While not wishing to be bound by theory, the formation of particulate polysaccharide cationic polysaccharides minimizes the interaction between the cationic polysaccharide and the water soluble film when formulated in a water soluble unit dose article. It has the further advantage of. Such interactions can delay the dissolution of both the film and the cationic polysaccharide.

  When formulated in a laundry detergent composition, the laundry detergent composition is 0.05% to 10%, more preferably 0.1% to 5%, more preferably 0.2% of the laundry detergent composition. % To 3% by weight, most preferably 0.25% to 1% by weight of cationic polysaccharide polymer may be included.

  The laundry detergent composition may comprise a nonionic surfactant, preferably the nonionic surfactant is a fatty alcohol alkoxylate, an oxo synthetic fatty alcohol alkoxylate, a Guerbet alcohol alkoxylate, an alkylphenol alcohol alkoxy. Selected from rates, or mixtures thereof. Preferably, the liquid laundry detergent composition is 1% to 25%, preferably 1.5% to 20%, most preferably 2% to 15%, by weight of the liquid laundry detergent composition. Contains a surfactant.

  The weight ratio of non-soap anionic surfactant to nonionic surfactant is from 1: 1 to 20: 1, preferably 1.3: 1 to 15: 1, more preferably 1.5: 1 to 10 :. Can be 1.

  The laundry detergent composition is 1% to 25%, preferably 1.5% to 20%, more preferably 1% to 25%, preferably 1.5% to 25% by weight of the liquid detergent composition. It may contain 20% by weight soap, most preferably 2% to 15% soap. While not wishing to be bound by theory, it is preferable to carefully adjust the levels of fatty acids and neutralized fatty acid soaps. Some fatty acids or neutralized fatty acid soaps are preferred to neutralize the water, but too much fatty acid, fatty acid soap, or mixture thereof can cause salt formation on the fabric, There is a possibility of inactivating the cationic polysaccharide before it is used in the rinsing step.

  The laundry detergent composition may further comprise a cleaning or care polymer, preferably the cleaning or care polymer is an ethoxylated polyethyleneimine, alkoxylated polyalkylphenol, amphiphilic graft copolymer, polyester terephthalate, carboxymethylcellulose, or mixtures thereof. Selected from.

  The laundry detergent may contain further auxiliary ingredients. Auxiliary laundry detergent ingredients include bleach, bleach catalyst, dye, hueing agent, surfactant, solvent, dye transfer inhibitor, chelating agent, enzyme, fragrance, encapsulated fragrance, fragrance delivery agent, foam suppressant, It can be selected from whiteners, polycarboxylates, structurants, antioxidants, deposition aids, and mixtures thereof.

Preferably, the softening active material is a quaternary ammonium compound, amine, fatty acid ester, sucrose ester, silicone, dispersible polyolefin, polysaccharide, fatty acid, softening oil, polymer latex, softening clay. , And combinations thereof, preferably the fabric softening active is selected from the group consisting of quaternary ammonium compounds, and mixtures thereof, more preferably ester quats, most preferably fabrics. The softening active is selected from the group consisting of diester quats, more preferably diethyl ester dimethyl ammonium chloride (DEEDMAC).

  When formulated in a fabric softening composition, preferably the softening composition is 2% to 25%, preferably 4% to 20%, more preferably 5% to 5% by weight of the softening composition. 15% by weight, most preferably 5% to 13% by weight of the softening active substance.

  The laundry softening composition preferably further comprises a perfume or perfume capsule technology for the purpose of delivering a scent to the treated fabric. The laundry softening composition may include additional ingredients, as typically recognized by those skilled in the art.

  Further use of the combination of the cationic polysaccharide polymer and the anionic non-soap surfactant in the first fabric treatment solution may reduce the use of the softener active in the second subsequent fabric treatment solution. It is for making possible.

  A perfume when the active substance contacts the fabric in another subsequent second fabric treatment solution using a combination of a cationic polysaccharide polymer and an anionic non-soap surfactant in the first fabric treatment solution. The adhesion of other active substances such as materials or perfume capsules to the fabric can be improved.

Methods of Making One skilled in the art can use water-soluble unit dose articles, laundry detergent compositions, fabric softening compositions, softening actives, anionic non-soap interfaces of the present invention using methods known in the art. One will recognize active agents and methods of making cationic polysaccharide polymers.

  The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Rather, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” shall mean “about 40 mm”.

  The effect of the presence of the cationic hydroxyethylcellulose (CatHEC) according to the present invention on the absence of main wash in the main wash is the diethyl ester dimethylammonium chloride (DEEDMAC) diesterquat softener added during the subsequent rinse cycle. Evaluation was made with regard to the adhesion efficiency of the activated active substance and thus the flexibility effect.

^＊ＥＯ鎖１つ当たり２０の平均エトキシル化度、及び約６００のＭＷを有するポリエチレンイミン骨格を有するエトキシル化ポリエチレンイミン
^＊＊ポリエチレングリコール骨格（Ｐｌｕｒｉｏｌ Ｅ６０００）及び疎水性酢酸ビニル側鎖を有し、４０重量％のポリエチレングリコール骨格ポリマーのポリマー系及び６０重量％のグラフト化された酢酸ビニル側鎖のポリマー系を含む、ポリエチレングリコールグラフトポリマー。

^* Ethoxylated polyethyleneimine having a polyethyleneimine backbone with an average degree of ethoxylation of 20 per EO chain and a MW of about 600
^{** having a} polyethylene glycol backbone (Pluriol E6000) and hydrophobic vinyl acetate side chains, comprising a polymer system of 40% by weight polyethylene glycol backbone polymer and a polymer system of 60% by weight grafted vinyl acetate side chain, Polyethylene glycol graft polymer.

Test method:
Cleaning process:
10 sheets of 100% cotton terry towel (size: 30cm x 30cm), 10 sheets of 50% cotton / 50% polyester knit cloth (size: 30cm x 30cm-K7422) and 80% cotton / 20% polyester ballast load (washing) With 25.7 g of the formulation summarized in the table above, together with a total weight of fabric in 2.7 kg), in a vertical Kenmore 600L washing machine heavy duty cycle (32 ° C., washing time: 12 minutes, washed with 64 liters of 0.1 g / L (8 gpg) water). As a result, the fabric was rinsed for 3 minutes in the presence (comparative example C-example A) / absent (comparative examples A and B) of 25.5 g of fabric enhancer composition summarized in the above table (20 C., rinsing time: 3 minutes, 64 liters of 0.1 g / L (8 gpg) water), dried in a rotary drum dryer.

Measurement of friction between fabrics A 100% cotton terry towel tracer was equilibrated in a room at a constant temperature (23 ° C.) and humidity (55% relative humidity) for at least 5 hours. The dynamic friction coefficient between the fabrics was measured in the same room using a Thing-Albert Friction Peel Tester with a 2.5 kg load cell and a crosshead height of 25 mm. Place the first piece of fabric on the sample stage of the instrument and attach the same second piece of fabric (11.43 cm x 6.35 cm) to a 200 g sled with clamp mechanism attached to the load cell. Placed on the surface. The Frictional Peel Tester is programmed to move the second piece of fabric (attached to the sled with clamp mechanism) over the first piece of fabric (on the sample table) at 20 cm / min for 20 seconds. As the fabrics move over each other's surface, the software records the frictional forces experienced by the fabrics attached to the clamped sled. The terry towel tracer is placed on the instrument so that it is measured against the fabric.

  The dynamic friction coefficient (referred to as “KCoF”) is derived by dividing the average force for the 10 seconds (kinetic section) immediately before the measurement by the normal force applied during the measurement. This coefficient of dynamic friction is used as a measure of flexibility. A low coefficient of dynamic friction means less friction and therefore better flexibility. The average friction results for 10 terry towels are reported below.

Diester quat measurement:
The concentration of DEEDMAC diester quat material extracted from the fabric after the wash test was analyzed by hydrophilic interaction liquid chromatography / tandem mass spectrometry (HILIC / MS / MS) analysis using multiple reaction monitoring (MRM).

  A working standard was prepared using DEEDMAC diesterquat raw material to create a calibration curve. This curve included a working standard concentration range of 13.2 to 1644 ng / mL, which corresponded to 12.8 to 1596 μg / g (ppm) for active diester quats attached to the fabric. A labeled internal standard containing deuterium was used to correct the matrix effect.

  The amount of DEEDMAC diester quat deposited was defined by comparing the extracted DEEDMAC diester quat material measurements with the calibration curve generated. The average result of 10 cotton terry towels was reported.

Test results:
The following table shows the actual amount of diester quat (DEEDMAC) softening active material deposited on the fabric and the resulting coefficient of friction measured on the fabric. When the cationic hydroxyethylcellulose according to the present invention is incorporated into the main cleaning product, the adhesion of the diester quat softening active (DEEDMAC) during rinsing is enhanced, thus improving the softening performance (decreasing friction coefficient KCoF) ) Clearly understood.

Claims (15)

Using a combination of a cationic polysaccharide polymer and an anionic non-soap surfactant in a first fabric treatment solution,
To improve adhesion of the softening active material to the fabric when the softening active material contacts the fabric in another subsequent second fabric treatment liquid;
Use wherein the fabric is first contacted with the first fabric treatment liquid.   The cationic polysaccharide polymer is a cation-modified hydroxyethyl cellulose, a cation-modified hydroxypropyl cellulose, a cation and a hydrophobic-modified hydroxyethyl cellulose, a cation and a hydrophobic-modified hydroxypropyl cellulose, or a mixture thereof, more preferably a cation-modified hydroxyethyl cellulose, a cation and a hydrophobic modification. Use according to claim 1, selected from hydroxyethylcellulose, or a mixture thereof.   The softening active substance comprises a quaternary ammonium compound, an amine, a fatty acid ester, a sucrose ester, a silicone, a dispersible polyolefin, a polysaccharide, a fatty acid, a softening oil, a polymer latex, a softening clay, and combinations thereof. Preferably, the fabric softening active is selected from the group consisting of quaternary ammonium compounds and mixtures thereof, more preferably ester quats, most preferably the fabric softening active is diester quats. The use according to claim 1 or 2, more preferably selected from the group consisting of diethyl ester dimethylammonium chloride.   4. The first fabric treatment liquid according to any one of claims 1 to 3, wherein the cationic polysaccharide polymer comprises 0.1 ppm to 100 ppm, preferably 0.5 ppm to 50 ppm, more preferably 1 ppm to 20 ppm. Use of.   The first fabric treatment liquid contains 10 ppm to 1000 ppm, preferably 50 ppm to 900 ppm, more preferably 100 ppm to 800 ppm of the non-soap anionic surfactant, preferably the non-soap anionic surfactant Chain alkylbenzene sulfonates, alkoxylated alkyl sulfates, or mixtures thereof, more preferably mixtures thereof, wherein the ratio of linear alkylbenzene sulfonate to alkoxylated alkyl sulfate is preferably the ratio of linear alkylbenzene sulfonate to ethoxylated alkyl sulfate. 1: 2-20: 1, preferably 1.1: 1-15: 1, more preferably 1.2: 1-10: 1, even more preferably 1.3: 1-5: 1, most preferably Is 1.4: 1 to 3: 1 Use according to any one of 1 to 4.   6. The first fabric treatment liquid according to any one of claims 1 to 5, wherein the first fabric treatment liquid comprises 0 ppm to 200 ppm, preferably 5 ppm to 150 ppm, more preferably 10 ppm to 100 ppm fatty alcohol ethoxylate nonionic surfactant. Use of description.   Use according to any one of the preceding claims, wherein the second fabric treatment liquid comprises 1 to 500 ppm, preferably 10 to 400 ppm, most preferably 20 to 300 ppm of the softening active.   Any one of claims 1-7, wherein the first fabric treatment liquid comprises less than 300 ppm, preferably 5 ppm to 250 ppm, more preferably 10 ppm to 200 ppm fatty acid, neutralized fatty acid soap, or a mixture thereof. Use as described in section.   9. The first fabric treatment liquid, the second fabric treatment liquid, or both comprise 1 kg to 20 kg, preferably 3 kg to 15 kg, most preferably 5 kg to 10 kg of the fabric. The method according to one item.   The fabric comprises a natural material, a synthetic material, or a mixture thereof, preferably the fabric is selected from cotton, polyester, cotton / polyester blend, or a mixture thereof, preferably cotton. The use according to any one of 9 above.   Use according to any one of the preceding claims, wherein the first fabric treatment liquid, the second fabric treatment liquid, or both are present in an automatic washing machine.   The fabric is transferred directly from the first fabric treatment liquid to the second fabric treatment liquid, preferably the first fabric treatment liquid and the second fabric treatment liquid are in the same drum of an automatic washing machine. 12. Use according to any one of claims 1 to 11, formed separately.   The cationic polysaccharide polymer and the anionic non-soap surfactant are present in a laundry detergent composition that is diluted 300 to 3000 times in water to produce the first fabric treatment liquid. Use according to any one of -12.   14. Use according to claim 13, wherein the laundry detergent composition is present in a water soluble unit dose article and the water soluble unit dose article comprises a water soluble film.   15. The fabric softening composition according to any one of the preceding claims, wherein the softening active is present in a fabric softening composition that is diluted 300-3000 times in water to produce the second fabric treatment liquid. Use of description.

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