WO2019041379A1 - Shampoo composition containing aqueous polyurethane dispersion, and uses of dispersion - Google Patents

Abstract

A shampoo composition containing an aqueous polyurethane dispersion. The shampoo composition comprises aqueous polyurethane, a dirt-removal surfactant, a conditioner, and a carrier. After hair is dried, the shampoo composition can increase the volume of the hair processed by the shampoo composition and can allow the hair to have full and fluffy effects.

Description

Shampoo composition for aqueous polyurethane dispersion and use of the dispersion Technical field

The present invention relates to the field of shampoos, and in particular to a shampoo composition which is a more plentiful and fluffy hair after drying of the aqueous polyurethane dispersion and the use of the dispersion.

Background technique

Many people have such troubles: the hair is soft, the hair is rubbed on the scalp when washing the hair or getting up, it looks like no spirit, and it also causes the visual feeling of less aging, so many consumers wash it every time. In order to make the hair look more fluffy and full, the hair has to be blown dry with a hair dryer, but often blown with a hair dryer will reduce the moisture contained in the hair. In the long run, the hair will become dry and split, and even A break is generated. For consumers with curly hair, letting the hair fluffy will make the hairstyle look perfect.

In shampoo compositions, many attempts have been made to address volume or loft problems, but with limited success, for example, to produce hair volume, solid particles are typically added to the shampoo composition to separate the hair fibers, It includes smooth round granule polyethylene and irregularly shaped silica granules. However, the addition of these solid granules greatly reduces the smoothness of hair in wet combing and dry combing and cannot be widely accepted by consumers.

In order to solve the above problems, the skilled person has conducted research: Patent CN 105188851A discloses a shampoo containing silicone-grafted tapioca powder to provide hair volume gain effect, which is achieved by using silicone-grafted tapioca powder particles. Sleek without sacrificing volume, and then the effect of hair root lifting by the combination of conditioners, essentially the patent uses the conditioning of silicone to improve the hairiness after the particles are added. However, although the silicon compound in shampoo can make the hair smooth, but because these silicon-containing compounds are insoluble in water and the structure is very stable and difficult to be biodegraded, the silicon wrapped around the hair and scalp is not easily cleaned. Clean, long-term use will put a certain burden on the hair and the environment, therefore, from environmental protection and From a health perspective, experts have suggested reducing the use of silicone oil in cosmetics. Therefore, shampoo and hair care products without silicone oil have been popular in Europe, America and Japan in recent years. At present, domestic hair care products are also developing in the direction of no silicone oil, and the above patents use silicone grafting to improve hair growth. The sensation of sensation makes it necessary to have silicon-containing compounds in the formulation, which cannot meet the current market development trend.

Patent CN 102065833 A discloses a shampoo which surprisingly finds that a shampoo preparation having a hyperbranched polyester amide having at least one quaternized amine end group and comprising an anionic surfactant is particularly suitable for increasing hair volume. However, its effect on hair volume gain is limited, and the final result is 4-5% increase in volume compared to the initial state, which is almost insignificant for the improvement in visual abundance of the hair after use. Moreover, this patent only discloses a comparison with the volume gain effect of the blank sample, and does not disclose the volume gain effect when a cationic conditioning polymer such as hydroxypropyl guar hydroxypropyltrimonium chloride is added to the formulation. In contrast, cationic polymers are widely used ingredients in shampoos to improve hair combability and smoothness. Also disclosed in the patent are cationic conditioning polymers such as hydroxypropyl guar hydroxypropyltrimonium chloride. The hair bundle volume is reduced, and the patent does not disclose a comparison of the specific volume gain effects of the cationic conditioning polymer.

Patent CN102020774A discloses a moisture-permeable waterproof PU water-based resin for use as a fabric coating, and mentions that the use of a sulfonate can greatly improve the hydrophilicity of the PUD to obtain a good aqueous moisturizing effect. However, the study found that the PUD mentioned in this patent has a water-absorbing and moisturizing effect, and can not provide a full-bodied effect in the shampoo, thereby reducing the hair abundance by water absorption and moisturizing effect; and the PUD emulsion containing a long EO segment. The film formation is usually soft, and it is easy to make the hair sticky and knotted on the hair, and it can not achieve the natural fullness and fluffy shampoo effect in the shampoo.

Therefore, it is particularly important to develop a shampoo that is health and safety, widely applicable, and has a significant volume effect.

Summary of the invention

An object of the present invention is to provide a shampoo composition for an aqueous polyurethane dispersion, which solves the problem that the shampoo in the prior art easily causes sticky feelings such as stickiness, hoarseness, and stiffness, and is a hair after washing. Brings a natural fullness effect.

To achieve the above object, the present invention adopts the following technical solutions:

A shampoo composition for an aqueous polyurethane dispersion, the shampoo composition comprising the following components:

(a) a polyurethane introduced in the form of an aqueous polyurethane dispersion, wherein the content of the polyurethane contained in the shampoo composition is from 1% by weight to 10% by weight;

(b) an effective amount of a detersive surfactant;

(c) from 0.5% by weight to 5% by weight based on the total weight of the shampoo composition; and

(d) a carrier.

Waterborne polyurethane dispersion

The aqueous polyurethane dispersion is obtained by dispersing polyurethane particles in a continuous aqueous phase, also referred to as aqueous PU or water-based PU.

In the present invention, the component polyurethane is introduced in the form of the aqueous polyurethane dispersion, that is, when the above composition is disposed, the aqueous polyurethane dispersion is directly added to introduce the polyurethane, thereby contributing to its in the shampoo composition. Better dispersion to achieve good application results. The content of the polyurethane is preferably from 2 wt% to 7 wt%, such as 3 wt%, 4 wt%, 5 wt% or 6 wt%. The right amount helps to achieve a satisfactory effect while maintaining economy. Further, the polyurethane dispersed in the shampoo composition preferably has a particle diameter of 10 nm to 200 nm, more preferably 50 nm to 160 nm, such as 80 nm, 100 nm or 120 nm, and it has been found that the above suitable particle diameter can be better applied to hair.

The synthesis of the aqueous polyurethane dispersion is well known in the art, and the polyisocyanate and the polyol are used as raw materials, and are synthesized and dispersed under the action of a chain extender and a hydrophilic agent (also called an aqueous chain extender, a hydrophilic chain extender). To the water; in the present invention, the solid content (polyurethane) of the aqueous polyurethane dispersion is preferably from 20% by weight to 50% by weight, such as 30% by weight or 40% by weight. Those skilled in the art understand that they can generally be divided into anionic, cationic and nonionic aqueous polyurethane dispersions. In the present invention, the aqueous polyurethane dispersion is preferably an anionic aqueous polyurethane dispersion.

The polyisocyanate mainly comprises two types of aromatic polyisocyanate and aliphatic polyisocyanate. In the present invention, the polyisocyanate is preferably an aliphatic polyisocyanate such as hexamethylene diisocyanate. (HDI), 4,4'-dicyclohexylmethane diisocyanate (HMDI) and isophorone diisocyanate (IPDI), more preferably HDI and/or HMDI, more preferably HDI.

The polyol is preferably a polyester polyol, and more preferably an organic dicarboxylic acid or an organic dicarboxylic acid anhydride is reacted with a stoichiometric excess of a glycol or a polyol to have a number average molecular weight of 500 to 3,000. Preferably, from 1000 to 2500, such as 1500 or 2000, a polyester polyol having a functionality of from 2 to 3. Wherein the organic dicarboxylic acid or organic dicarboxylic acid anhydride is selected from the group consisting of succinic acid or its anhydride, glutaric acid or its anhydride, adipic acid or its anhydride, pimelic acid or its anhydride, suberic acid or An acid anhydride, sebacic acid or its anhydride, sebacic acid or its anhydride, phthalic acid or its anhydride, isophthalic acid or its anhydride, and terephthalic acid or its anhydride, one or two or more The glycol or polyol is selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, 1,3-butanediol, 1,6-hexanediol, trimethylolpropane And one or two or more kinds of neopentyl glycol.

In a preferred embodiment, the polyester polyol is prepared using adipic acid with 1,6-hexanediol and/or neopentyl glycol, such as polyhexamethylene glycol adipate, polyadipate. a pentanediol ester, such as CMA-654, PNA2000; wherein when used simultaneously, the molar ratio of the 1,6-hexanediol to neopentyl glycol can be appropriately adjusted, such as 1:4 to 4:1, for example 1:1. The polymer has the advantages of dry film formation, no stickiness, high gloss, good toughness and good elasticity, and can improve the shortcomings of hair softness and collapse.

The use of the chain extenders is well known in the art for adjusting molecular weight and ratios of soft and hard segments, and commonly used polyfunctional alcohol chain extenders such as neopentyl glycol.

The hydrophilic agent, also known as a hydrophilic chain extender or an aqueous chain extender, may be a chain extender capable of introducing a hydrophilic group on the aqueous polyurethane macromolecular backbone, such as a sodium sulfamate hydrophilic agent, preferably It is sodium N-(2-aminoethyl)-2-aminoethanesulfonate.

Detersive surfactant

The detersive surfactant is a common component in shampoo compositions, well known in the art, which provides cleaning properties to the composition, which can be anionic surfactants, nonionic surfactants, amphoteric surfaces An active agent, or a mixture of at least two of them. Various examples and descriptions of detersive surfactants are shown in U.S. Patent No. 6,649,155, U.S. Patent Application Publication No. 2008/0317, 698, and U.S. Patent Application The publication is hereby incorporated by reference in its entirety in its entirety. Preferably, the detersive surfactant is sodium lauryl sulfate, sodium lauryl polyether sulfate, C12-16 alkyl glucoside, sodium lauroyl glutamate, or at least two of them mixture.

An effective amount of the detersive surfactant component in the shampoo composition means that the concentration of the detersive surfactant is sufficient to provide the desired cleaning and foaming properties, and is generally present in the art at a level of about 5 wt. % to about 50% by weight, such as 8 wt%, 20 wt%, 25 wt%, 35 wt% or 45 wt%, preferably 10 wt% to 40 wt%, further preferably 15 wt% to 30 wt%.

Conditioner

The conditioning agent is a common component in shampoo compositions and is well known in the art, which can act as a hair softening, cushioning surfactant to scalp irritation and/or enhance dry comb compliance in shampoo compositions. And moisturizing hair, mainly silicone oil conditioner and cationic conditioner, such as polyquaternium, water-soluble silicone oil, cationic guar gum, or a mixture of at least two of them; preferably, the conditioner It is a mixture of guar hydroxypropyltrimonium chloride, polyquaternium-7, polydimethylsiloxane, or at least two of them.

The concentration of the conditioning agent in the shampoo composition should be sufficient to provide the desired conditioning performance. In the present invention, the conditioning agent is generally present in an amount of from about 0.5% by weight to about 5% by weight, such as 1% by weight, 2% by weight, 3% by weight, 3.5% by weight or 4.5% by weight, preferably 1.5% by weight to 4% by weight.

Carrier

The shampoo compositions are typically in the form of a pourable liquid (under ambient conditions). Accordingly, such compositions typically comprise a carrier, which is well known in the art, and the necessary amount thereof can be readily selected by those skilled in the art based on the desired product, which can generally be above about 20% by weight, or even from about 60% to about 85. The content by weight % is present, such as 30 wt%, 40 wt%, 50 wt%, 70 wt% or 80 wt%. The carrier may comprise water, or a miscible mixture of water and an organic solvent. In the present invention, it will be understood by those skilled in the art that the carrier may be at least partially derived from water in the aqueous polyurethane dispersion.

Carriers useful in the shampoo compositions of the present invention include water and lower alkyl alcohols (having from 1 to 6 An aqueous solution of a carbon monohydric alcohol such as ethanol and isopropanol and/or a polyhydric alcohol such as hexanediol, glycerin and propylene glycol.

Optional other ingredients/auxiliaries

As a shampoo composition, it is usually also possible to contain one or more optional ingredients/auxiliaries as needed, such as sodium chloride, a thickener, a pH adjuster, an antidandruff agent, a perfume, an emulsifier, a chelating agent, One or more of an opacifier, a preservative, and a pearling agent, but are not limited thereto. The necessary amount can be readily selected by those skilled in the art based on the desired product, including, but not limited to, polyacrylic acid polymers, xanthan gum, and the like; pH adjusting agents include, but are not limited to, citric acid; But not limited to zinc pyrithione, clomiprazole; emulsifiers include, but are not limited to, ammonium lauryl sulfate; chelating agents include, but are not limited to, disodium EDTA; opacifiers include, but are not limited to, styrene/acrylate copolymers; Preservatives include, but are not limited to, phenoxyethanol.

The shampoo compositions of the present invention can be prepared by conventional methods in the art, such as by mixing the ingredients to a relatively uniform basis, including one or more steps, in accordance with the group distribution ratios described in the formulations. Heating, cooling, vacuum, etc. may or may not be used.

The shampoo composition of the present invention is suitable for use in hair, and when used, it is rinsed with water after being massaged. The shampoo composition can impart the desired abundance, volume gain effect to the consumer after the hair is dried.

The invention also provides the use of the above aqueous polyurethane dispersions in shampoo compositions for increasing hair volume, bulkiness, and bulkiness.

Compared with the prior art, the present invention adds an aqueous polyurethane dispersion to the shampoo composition, and the unique design of the polyurethane molecule in the aqueous polyurethane dispersion can provide good film-forming elasticity and high gloss. It has the characteristics of good toughness and non-stickiness. It can be used in shampoo to physically improve the shortcomings of hair softness and collapse, and it will not cause sticky feelings such as sticky, hoarseness and stiffness, bringing a new look to the hair after washing. Natural fullness effect.

DRAWINGS

Fig. 1 is a graph showing the effect of hair after washing with the shampoo of Example 1 and shampoo of Comparative Example 2.

Detailed ways

The invention is further described in detail below by way of specific examples, but it should be understood that the scope of the invention is limited to the following examples. Various alterations and modifications may be made without departing from the spirit and scope of the invention.

In the following examples and comparative examples, the sources of the raw materials involved are as follows:

Anionic Aliphatic Waterborne Polyurethane Dispersion-1: Synthesized by adding 80 g of CMA-654 (Yantai Huada Chemical) and 2.5 g of neopentyl glycol (chain extender, Wanhua Chemical Group Co., Ltd.) in a four-necked flask Company), mix and stir for 10min at 70°C, cool down to 50°C and add 19g

(Wanhua Chemical Group Co., Ltd.) reaction, diluted with 10g of acetone, test the reaction about NCO% = 2.69wt%, so that the prepolymer is cooled to 40 ° C, dissolved in 150g of acetone solvent, mixed for 15min, added by 0.7 g ethylenediamine (chain extender, BASF, Germany) and 5g

(Hydrophilic agent, sodium N-(2-aminoethyl)-2-aminoethanesulfonate, Degussa) solution formed in 15g of deionized water, continued reaction at 45 ° C for 30 min, in shear dispersion conditions 210 g of water was added thereto, and then acetone was removed by distillation under reduced pressure to obtain a polyurethane dispersion having a solid content of about 31% by weight, and a particle diameter of 50 nm.

Anionic aliphatic aqueous polyurethane dispersion-2: 126g CMA-654, 0.9g neopentyl glycol was added to a four-necked flask, mixed and stirred at 70 ° C for 10 min, diluted with 10 g of acetone, and cooled to 50 ° C to add 25.5 g.

The reaction was tested and the reaction was about NCO%=3.05 wt%, so that the prepolymer was cooled to 40 ° C, dissolved in 300 g of acetone solvent, and after mixing for 15 min, 1.2 g of ethylenediamine and 9 g were added.

After the reaction was continued at 30 ° C for 30 min in a solution of 30 g of deionized water, 310 g of water was added under shear-dispersion conditions, and then acetone was removed by distillation under reduced pressure to obtain a polyurethane dispersion having a solid content of about 32% by weight and having a particle diameter of 110 nm.

Anionic aliphatic aqueous polyurethane dispersion-3: 126g CMA-654, 0.9g neopentyl glycol, 0.8g polyethylene glycol monomethyl ether MPEG1200 (Jiangsu Dana Chemical Co., Ltd.); 10g Acetone, mixed at 70 ° C for 10 min, cooled to 50 ° C added 25.5g

The reaction was tested and the reaction was tested to about NCO% = 3.02% by weight, so that the prepolymer was cooled to 40 ° C, dissolved in 270 g of acetone solvent, and after mixing for 15 min, 1.2 g of ethylenediamine and 7 g were added.

After the reaction was continued at 45 ° C for 3 min in a solution of 30 g of deionized water, 260 g of water was added under shear-dispersion conditions, and then acetone was removed by distillation under reduced pressure to obtain a polyurethane dispersion having a solid content of about 32% by weight and having a particle diameter of 160 nm.

Anionic aliphatic aqueous polyurethane dispersion-4: 130 g of PNA2000 (polybutylene adipate, molecular weight 2000) and 1.5 g of neopentyl glycol were placed in a four-necked flask, and stirred at 70 ° C for 10 min, and cooled to Add 35g at 50°C

The reaction was diluted with 30 g of acetone. When NCO%=2.30 wt%, the prepolymer was cooled to 40 ° C, dissolved in 240 g of acetone solvent, and after mixing for 15 min, 1 g of ethylenediamine and 9 g were added.

After the reaction was continued at 45 ° C for 30 min in a solution of 40 g of deionized water, 230 g of water was added under shear-dispersion conditions, and then acetone was removed by distillation under reduced pressure to obtain a polyurethane dispersion having a solid content of about 40% by weight and having a particle diameter of 150 nm.

Anionic aliphatic aqueous polyurethane dispersion-5: 130 g of CMA-654 and 1.5 g of neopentyl glycol were placed in a four-necked flask, mixed and stirred at 70 ° C for 10 min, and cooled to 50 ° C to add 40 g.

(Wanhua Chemical Group Co., Ltd.) reaction, diluted with 30g of acetone, when NCO% = 2.10wt%, the prepolymer was cooled to 40 ° C, dissolved in 240g of acetone solvent, mixed for 15min, added by 0.8g of ethylene Amine and 9g

After the reaction was continued at 45 ° C for 30 min in a solution of 40 g of deionized water, 240 g of water was added under shear-dispersion conditions, and then acetone was removed by distillation under reduced pressure to obtain a polyurethane dispersion having a solid content of about 40% by weight and having a particle diameter of 180 nm.

Anionic aliphatic aqueous polyurethane dispersion-6: 140g CMA-654, 1.5g neopentyl glycol was added to a four-necked flask, mixed and stirred at 70 ° C for 10 min, cooled to 50 ° C and added to 25 g

The reaction was diluted with 30 g of acetone. When NCO% = 2.10% by weight, the prepolymer was cooled to 40 ° C, dissolved in 240 g of acetone solvent, and after mixing for 15 min, 1.4 g of ethylenediamine and 10 g were added.

After the reaction was continued at 45 ° C for 30 min in a solution of 50 g of deionized water, 280 g of water was added under shear-dispersion conditions, and then acetone was removed by distillation under reduced pressure to obtain a polyurethane dispersion having a solid content of about 35 wt% and a particle diameter of 120 nm.

Sodium lauryl sulfate (anionic surfactant, Shandong Knorster Biotechnology Co., Ltd.)

Sodium dodecyl polyether sulfate (anionic surfactant, Shandong Hao Chemical Co., Ltd.)

C12-16 alkyl glucoside (nonionic surfactant, Zhongqing Daily Chemical Technology Co., Ltd.)

Sodium lauroyl glutamate (amphoteric surfactant, Mingde Biotechnology Co., Ltd.)

Guar gum hydroxypropyl trimethyl ammonium chloride (cationic guar gum conditioning agent, Guangzhou Tianci new material)

Polyquaternium-7 (Polyquaternium Conditioner, Guangzhou Tianci New Material)

Polydimethylsiloxane (water-soluble silicone oil, Guangzhou Tianci new material)

Polyacrylic acid polymer (thickener, Lubrizol)

Citric acid (pH regulator, Guangzhou Huazhiwang Chemical Co., Ltd.)

Zinc pyrithione (anti-dandruff agent, Jining Yiyi Chemical Co., Ltd.)

Clomiprazole (anti-dandruff agent, Shandong Hao Chemical Co., Ltd.)

Ammonium dodecyl sulfate (emulsifier, Henan Botel Chemical Products Co., Ltd.

EDTA disodium (chelating agent, AkzoNobel, USA)

Styrene/Acrylate Copolymer (Sunscreen, Dow Chemical)

Phenoxyethanol (preservative, Dow Chemical)

Ethylene glycol distearate and fatty alcohol ether sodium sulfate (pearlescent agent, Jining Yiyi Chemical Co., Ltd.)

Xanthan gum (thickener, Zhengzhou Hongyitai Chemical);

TCW2890404 (Flavour, Lihua Fragrance Co., Ltd.);

Further, the raw materials used were analytically pure unless otherwise specified.

Table 1 Example and Comparative Example Shampoos

Test Methods:

A. Abundance test

Divide the hair of the model's head and provide two equal halves. Fully saturate the sides of the mannequin with water. 2.5 grams of shampoo was then applied to the hair and acted to create a foam. Then rinse each side of the mannequin for 30 seconds. The hair is combed through a comb to comb. Allow to dry naturally at room temperature. Ten testers observed the hair abundance on both sides of the model and scored 1-5 points. The score of 5 was good and the hair was soft.

B. Hair sensory evaluation experiment

Hair Tender Sensory Evaluation Experiment Sensory evaluation and scoring of washed wet and dry hair was performed by 10 testers. In order to quantify the sensory evaluation of the hair bundle, the experiment qualitatively and quantitatively describes the evaluation index, and scores using the 5-point system. The evaluation indicators include (dry/wet) combability, (dry/wet) dry hair feel, glossiness four. For each indicator, the score results provide quantitative evaluation data for the sensory assessment of the hair bundle. The evaluation indicators and corresponding evaluation scores are shown in the table:

Table 2 Hair sensory evaluation indicators and scores

Table 3 evaluation results

raw material	Example 1	Example 2	Example 3	Example 4	Example 5	Example 6	Comparative example 1	Comparative example 2	Comparative example 3
Abundance	4	5	5	4	5	4	5	1	1
Wet combing	5	5	4	5	5	5	5	4	5
Wet hair feel	5	5	4	4	4	4	5	4	5
Dry combing rationality	5	5	5	4	4	4	1	5	5
Dry hair feel	5	5	4	3	4	4	1	5	5
Gloss	5	5	5	4	4	4	5	5	5

From the above results, it can be seen from Fig. 1 that the use of the shampoo containing the aqueous polyurethane dispersion of the present invention can provide a significant gain effect on the hair volume, and can provide a fluffy and full-bodied visual feeling for the hair, while at the same time (dry/wet) ) combability, (dry/wet) dry hair feel, gloss and other aspects of performance balance; in the comparative example 3 In addition, due to the large amount of conditioning agent, it has a great influence on the abundance, and it is still difficult to obtain a good abundance effect.

Claims (10)

1. A shampoo composition comprising an aqueous polyurethane dispersion, characterized in that the shampoo composition comprises the following components:

   (a) a polyurethane introduced in the form of an aqueous polyurethane dispersion, wherein the content of the polyurethane contained in the shampoo composition is from 1% by weight to 10% by weight;

   (b) an effective amount of a detersive surfactant;

   (c) from 0.5% by weight to 5% by weight based on the total weight of the shampoo composition; and

   (d) a carrier.
2. The shampoo composition according to claim 1, wherein the shampoo composition comprises the following components:

   (a) an aqueous polyurethane dispersion, wherein the content of the polyurethane contained in the shampoo composition is from 2 wt% to 7 wt%;

   (b) from 5% by weight to 50% by weight, based on the total weight of the shampoo composition, of a detersive surfactant;

   (c) from 1.5% by weight to 4% by weight of the conditioning agent based on the total weight of the shampoo composition;

   (d) a carrier.
3. The shampoo composition according to claim 1 or 2, wherein the polyurethane in the aqueous polyurethane dispersion is an anionic waterborne polyurethane synthesized by a polyisocyanate and a polyol under the action of a chain extender and a hydrophilic agent. ;

   Wherein the polyisocyanate is an aliphatic polyisocyanate, preferably HDI and/or HMDI, more preferably HDI;

   The polyol is preferably a polyester polyol;

   The hydrophilic agent is preferably sodium N-(2-aminoethyl)-2-aminoethanesulfonate.
4. The shampoo composition according to claim 3, wherein the aqueous polyurethane dispersion has a polyurethane particle diameter of 10 nm to 200 nm, preferably 50 nm to 160 nm.
5. The shampoo composition according to claim 3, wherein the polyester polyol is an organic dicarboxylic acid or an organic dicarboxylic acid anhydride and is reacted with a stoichiometric excess of a glycol or a polyol. a polyester polyol having a number average molecular weight of from 500 to 3,000, preferably from 1,000 to 2,500, and a functionality of from 2 to 3;

   Preferably, the polyester polyol is prepared by reacting adipic acid with 1,6-hexanediol and/or neopentyl glycol.
6. The shampoo composition according to claim 1, wherein the detersive surfactant is an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, or a mixture of at least two of them;

   Preferably, the detersive surfactant is sodium lauryl sulfate, sodium lauryl polyether sulfate, C12-16 alkyl glucoside, sodium lauroyl glutamate, or at least two of them mixture.
7. The shampoo composition according to claim 1, wherein the conditioning agent comprises a polyquaternium, a water-soluble silicone oil, a cationic guar gum, or a mixture of at least two thereof; preferably a guar gum Hydroxypropyltrimethylammonium chloride, polyquaternium-7, polydimethylsiloxane, or a mixture of at least two of them.
8. The use of aqueous polyurethane dispersions in shampoo compositions for increasing hair volume, bulkiness, and bulkiness.
9. The use according to claim 8, wherein the aqueous polyurethane dispersion is an aliphatic aqueous polyurethane dispersion, and the particle diameter is preferably from 10 nm to 200 nm, and more preferably from 50 nm to 160 nm.
10. The use according to claim 8 or 9, wherein the polyurethane in the aqueous polyurethane dispersion is an anionic waterborne polyurethane synthesized by a polyisocyanate and a polyol under the action of a chain extender and a hydrophilic agent;

    Wherein the polyisocyanate is an aliphatic polyisocyanate, preferably HDI and/or HMDI, more preferably HDI;

    The polyol is preferably a polyester polyol;

    The hydrophilic agent is preferably sodium N-(2-aminoethyl)-2-aminoethanesulfonate.

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