KR102340546B1 - Polysiloxane composition and hydrophilic silicone manufactured therefrom - Google Patents

Abstract

The present invention includes a hydrophilic compound, organopolysiloxane and organohydrogenpolysiloxane, wherein the hydrophilic compound is prepared by reacting a glycidyl compound and a polyhydric alcohol compound in a weight ratio of 1:1.0 to 1.5, and the organopolysiloxane to a polysiloxane composition comprising an alkenyl group, and to a hydrophilic silicone prepared therefrom.

Description

Polysiloxane composition and hydrophilic silicone prepared therefrom

The present invention relates to a polysiloxane composition comprising a hydrophilic compound, and a hydrophilic silicone having excellent hydrophilicity prepared therefrom.

Silicone is used as a raw material in various fields because of its excellent stability and feeling of use. In particular, the silicone applied to the cosmetic composition is typically prepared by reacting an alkenyl group-containing polysiloxane with a Si-H group-containing hydrogen polysiloxane. However, the silicone prepared as described above lacks hydrophilicity, and there is a limitation in reducing storage stability and fairness of cosmetics including the same.

As an alternative to this, using a composition containing polyglycerol or glucose in preparing the silicone as described above, a method for producing a silicone that is hydrophilized has been proposed. Specifically, Korean Patent Registration No. 1833959 (Patent Document 1) discloses (A) a gelling agent for an oil-based raw material, including a co-modified organopolysiloxane having a hydrophilic group and a group having a siloxane dendron structure. wherein the co-modified organopolysiloxane is obtained by reacting (a) an organohydrogensiloxane, (b) a hydrophilic derivative having a reactive unsaturated group, and (c) a siloxane dendron having a reactive unsaturated group. However, as in Patent Document 1, silicone modified with polyglycerol or glucose has a problem of phase separation and unpleasant odor due to residual unreacted glycerol or raw glucose generated during manufacture. In addition, when the polymerization degree of glycerol is high, workability is deteriorated due to the high viscosity of the manufactured silicone, and stickiness occurs when applied to the skin, so that a moist and smooth feeling cannot be obtained. In addition, there was a problem in that the degree of hydrophilicity improvement due to the use of glycerol or glucose, which is a hydrophilic raw material, was insufficient, and the storage property of the manufactured silicone was low, resulting in yellowing.

Therefore, there is a need for research and development on a composition capable of producing an eco-friendly silicone with excellent hydrophilicity, stability, workability and feeling, and with little odor, and a hydrophilic silicone prepared therefrom.

Korean Patent Registration No. 1833959 (published on August 8, 2012)

The present invention provides a composition capable of producing an environmentally friendly silicone having excellent hydrophilicity, stability, workability and feeling of use, with little odor, and a hydrophilic silicone prepared therefrom.

In order to achieve the above object, the present invention includes a hydrophilic compound, an organopolysiloxane and an organohydrogenpolysiloxane,

The hydrophilic compound is prepared by reacting a glycidyl compound and a polyhydric alcohol compound in a weight ratio of 1: 1.0 to 1.5,

The organopolysiloxane provides a polysiloxane composition comprising an alkenyl group.

In addition, the present invention provides a hydrophilic silicone prepared from the polysiloxane composition.

The polysiloxane composition according to the present invention may include a hydrophilic compound to prepare silicone having excellent hydrophilicity. In addition, the silicone prepared from the composition has excellent hydrophilicity, stability, workability and feel, and has little odor and is environmentally friendly, so it can be used as an emulsifier in a cosmetic composition.

Hereinafter, the present invention will be described in detail.

As used herein, "weight average molecular weight" is measured by a conventional method known in the art, for example, it can be measured by a GPC (gel permeation chromatograph) method.

polysiloxane composition

The polysiloxane composition according to the present invention includes a hydrophilic compound, an organopolysiloxane and an organohydrogenpolysiloxane.

hydrophilic compound

The hydrophilic compound serves to improve the hydrophilicity of the prepared silicone.

The hydrophilic compound is prepared by reacting a glycidyl compound with a polyhydric alcohol compound. For example, the hydrophilic compound is prepared by reacting a glycidyl compound and a polyhydric alcohol compound in a weight ratio of 1:1.0 to 1.5, and may be represented by the following Chemical Formula 1.

In Formula 1,

R ¹ is C _2-10 alkenyl,

R ² and R ³ are each independently C _1-10 alkylene,

n is an integer from 1 to 3.

Specifically, R ¹ may be C _2-8 alkenyl or C _2-5 alkenyl, and R ² and R ³ may each independently be C _1-7 alkylene or C _1-4 alkylene. In this case, the alkylene and alkenyl may be linear or branched.

The alkylene refers to a branched or straight-chain or cyclic divalent radical derived by the removal of one hydrogen atom from a carbon atom of an alkyl group. For example, the alkylene is methylene (-CH ₂ -), 1,1-ethylene (-CH(CH ₃ )-), 1,2-ethylene (-CH ₂ CH ₂ -), 1,1-propylene (-CH(CH ₂ CH ₃ )-), 1,2-propylene (-CH ₂ CH(CH ₃ )-), 1,3-propylene (-CH ₂ CH ₂ CH ₂ -), 1,4-butyl ene (-CH ₂ CH ₂ CH ₂ CH ₂ -), 2,4-butylene (-CH ₂ (CH ₃ )CH ₂ CH ₂ -), and the like, but are not limited thereto.

The hydrophilic compound is prepared by reacting a glycidyl compound and a polyhydric alcohol compound in a weight ratio of 1: 1.0 to 1: 1.5, specifically, a glycidyl compound and a polyhydric alcohol compound 1: 1.01 to 1: 1.45, or It may be prepared by reacting in a weight ratio of 1: 1.10 to 1: 1.40. When the weight ratio is less than 1:1.0, the crosslinking density is high and the viscosity is high, and there is a problem that the performance of silicone is insufficient, for example, softness, spreadability, etc. . In addition, when the weight ratio is more than 1: 1.5, the crosslinking density is lowered, hydrophilicity is insufficient, and the emulsification performance is lowered, which may cause phase separation of the product later.

In addition, the hydrophilic compound may have a hydroxyl group (-OH) content of 10 to 40 wt%, or 15 to 35 wt%, based on the total weight of the compound. When the hydroxyl group content of the hydrophilic compound is within the above range, it functions as an emulsification auxiliary, improves compatibility with an aqueous system, and provides an excellent moisturizing effect. When the hydroxyl group content of the hydrophilic compound is less than 10% by weight, the hydrophilic group content may be lowered, resulting in poor emulsification performance and lower emulsion stability. In addition, when the hydroxyl group content of the hydrophilic compound is more than 40% by weight, the lipophilicity of the prepared silicone may be relatively low, resulting in poor emulsification performance and poor emulsion stability.

The hydrophilic compound may have a weight average molecular weight (Mw) of 100 to 500 g/mol and 200 to 400 g/mol. When the weight average molecular weight of the hydrophilic compound is less than 100 g/mol, unreacted substances in the polyhydric alcohol compound or the glycidyl compound remain to suppress the silicone crosslinking reaction and may cause phase separation of the product later. When the weight average molecular weight of the hydrophilic compound is more than 500 g/mol, the hydroxyl group of the polyhydric alcohol compound causes an additional ring-opening reaction, and the hydrophilic group content of the prepared hydrophilic compound is lowered, so that the emulsification performance may be reduced.

In addition, the hydrophilic compound may be included in the composition in an amount of 0.1 to 5 parts by weight, or 0.5 to 3 parts by weight based on 5 to 20 parts by weight of the organopolysiloxane. When the content of the hydrophilic compound is less than 0.1 parts by weight, the emulsification performance of the manufactured silicone is lowered and compatibility with the aqueous system is lowered. This insufficient problem and a problem of poor workability due to the high viscosity of silicone may occur.

Organopolysiloxane

The organopolysiloxane is the main resin of the polysiloxane composition.

The organopolysiloxane may include an alkenyl group, for example, an alkenyl group at both terminals. Specifically, the organopolysiloxane may be represented by Formula 2 below.

In Formula 2,

R ⁵ to R ⁸ are each independently a substituted or unsubstituted C _1-10 alkyl group or C _2-10 alkenyl group,

R ⁹ and R ¹⁰ are each independently a substituted or unsubstituted C _2-10 alkenyl group,

m is 50 to 600.

Specifically, R ⁵ to R ⁸ may each independently be a substituted or unsubstituted C _1-6 alkyl group or C _1-3 alkyl group, or a C _2-8 alkenyl group or C _2-4 alkenyl group. In addition, R ⁹ and R ¹⁰ may each independently be a substituted or unsubstituted C _2-8 alkenyl group or a C _2-4 alkenyl group. Also, m may be 50 to 600 or 100 to 500.

In this case, the alkyl group and the alkenyl group may be linear or branched.

The organopolysiloxane may have an alkenyl group content of 0.05 to 0.2 mmol/g, or 0.1 to 0.2 mmol/g. In this case, the alkenyl group may be a vinyl group. When the alkenyl group content of the organopolysiloxane is less than 0.05 mmol/g, the cross-linking density of the prepared silicone is low, so that the thickener effect is not satisfactory when applied to a cosmetic formulation, and when it exceeds 0.2 mmol/g, the cross-linking density of the prepared silicone is excessively increased, the oil absorption power may be lowered, and it may be inferior in terms of usability.

In addition, the organopolysiloxane may be included in the composition in an amount of 5 to 20 parts by weight, or 10 to 15 parts by weight based on 0.1 to 5 parts by weight of the hydrophilic compound. When the content of the organopolysiloxane is less than 5 parts by weight, the crosslinking density of the prepared silicone is lowered to have a low viscosity, and when it is applied to a cosmetic formulation, the thickener effect is unsatisfactory. This drops, the emulsion stability is lowered, and the crosslinking density of the manufactured silicone is excessively increased, which lowers oil absorption and may be inferior in terms of usability.

Organohydrogenpolysiloxane

The organohydrogenpolysiloxane is a material that cross-reacts with the organopolysiloxane.

The organohydrogenpolysiloxane may include a hydrogen group (SiH) directly bonded to silicon in a side chain. In addition, the organohydrogenpolysiloxane may be represented by the following formula (3).

In Formula 3,

R ¹² to R ²⁰ are a substituted or unsubstituted C _1-10 alkyl group or a C _2-10 alkenyl group,

a is 1 to 50,

b is 1 to 100;

Specifically, R ¹² to R ²⁰ may be a substituted or unsubstituted C _1-6 alkyl group or C _1-3 alkyl group, a may be 1 to 30 or 3 to 20, and b may be 5 to 80 or 10 to 70 .

In this case, the alkyl group and the alkenyl group may be linear or branched.

In the organohydrogenpolysiloxane, the content of a hydrogen group (SiH) directly bonded to silicon may be 0.1 to 4.5 mmol/g, or 0.5 to 4.0 mmol/g. When the SiH content of the organohydrogenpolysiloxane is within the above range, the crosslinking density of the prepared silicone is appropriately adjusted, so that mixing with the diluent is good and a uniform paste can be prepared.

In addition, the organohydrogenpolysiloxane may have a weight average molecular weight (Mw) of 2,000 to 40,000 g/mol, or 3,000 to 38,000 g/mol. When the weight average molecular weight of the organohydrogenpolysiloxane is within the above range, the viscosity of the prepared silicone may be appropriate, and the spreadability may be light and stickiness may be less in terms of feeling of use.

The organohydrogenpolysiloxane may be included in the composition in an amount of 0.1 to 5 parts by weight, or 1 to 3 parts by weight based on 0.1 to 5 parts by weight of the hydrophilic compound. When the content of the organohydrogenpolysiloxane is within the above range, the amount of unreacted material with the organopolysiloxane is small, and the crosslinking density of the prepared silicone is appropriate, so that the physical properties and feeling of use of the silicone may be good.

diluent

The polysiloxane composition according to the present invention may further include a diluent. In this case, the diluent is not particularly limited as long as it can be added to the polysiloxane composition as a diluent, and for example, an organic solvent and silicone oil may be mentioned.

Examples of the organic solvent include ethanol, isopropanol, sorbitol, maltose, cholesterol, sitosterol, phytosterol, lanosterol, butylene glycol, propylene glycol, dibutylene glycol, and pentyl glycol. In addition, the silicone oil is dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, dimethylsiloxane/methylphenylsiloxane copolymer, organopolysiloxane, octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), dodecamethyl Cyclohexasiloxane (D6), tetramethyltetrahydrogencyclotetrasiloxane (H4), tetramethyltetraphenylcyclotetrasiloxane, tristrimethylsiloxysilane (M3T), tetrakistrimethylsiloxysilane (M4Q), tristrimethylsiloxy Phenylsilane, stearic silicone, alkyl-modified silicone, amino-modified silicone, fluorine-modified silicone, etc. are mentioned. In addition, the organic solvent may be a natural oil.

The diluent may be included in the composition in an amount of 60 to 95 parts by weight, or 70 to 90 parts by weight based on 0.1 to 5 parts by weight of the hydrophilic compound. If the content of the diluent is less than 60 parts by weight or exceeds 95 parts by weight, a uniform composition may not be obtained, which is not preferable in terms of viscosity or feeling of use of the prepared silicone. In addition, the diluent may be added in two divided doses when preparing the hydrophilic silicone, and in this case, the first input amount and the second input amount may be added in a weight ratio of 1: 1.2 to 3.0, or 1: 1.5 to 2.5.

catalyst

The polysiloxane composition according to the present invention may further include a catalyst.

The catalyst is not particularly limited as long as it can be added to the polysiloxane composition, and for example, a hydrosilylation catalyst, specifically, chloroplatinic acid, platinum metal, platinum supported on alumina, platinum supported on silica, platinum supported on carbon black, platinum-vinylsiloxane complexes, platinum phosphorus complexes, platinum-phosphite complexes, platinum alcoholate catalysts, and the like.

The catalyst may be included in the composition in an amount of 0.001 to 1 parts by weight, or 0.005 to 0.1 parts by weight based on 0.1 to 5 parts by weight of the hydrophilic compound. If the catalyst content is less than 0.001 parts by weight, the reaction may not occur and silicone may not be produced.

As described above, the polysiloxane composition according to the present invention may include a hydrophilic compound prepared by reacting a polyhydric alcohol compound with a glycidyl compound to prepare silicone having excellent hydrophilicity.

hydrophilic silicone

In addition, the hydrophilic silicone according to the present invention is prepared from the polysiloxane composition.

The hydrophilic silicone may have a solid content of 10 to 30% by weight or 10 to 20% by weight based on the total weight, and a viscosity of 50,000 to 600,000 cP or 100,000 to 500,000 cP at 25°C.

As described above, the hydrophilic silicone according to the present invention has excellent hydrophilicity, emulsion stability, and compatibility, and has little odor, so it can be used as an emulsifier in a cosmetic composition.

Hereinafter, the present invention will be described in more detail through examples. However, these examples are only for helping the understanding of the present invention, and the scope of the present invention is not limited to these examples in any sense.

[Example]

Preparation Example 1. Preparation of a hydrophilic compound

Put 64.99 parts by weight of dimethyl sulfoxide (DMSO), 17.70 parts by weight of pentaerythritol, a polyhydric alcohol compound, and 0.06 parts by weight of potassium hydroxide (KOH) in a reaction vessel, and raise the temperature to 80 ℃ and hold for 30 minutes did. Thereafter, 13.35 parts by weight of a glycidyl compound, 2-(prop-2-enoxymethyl)oxirane (AGE), was added dropwise to react. After completion of the dropwise addition, the reaction was further carried out for 3 hours, 3.90 parts by weight of a neutralizing agent (Kyowa Chemical Industry Co., Ltd., KYOWAAD-600) was added, followed by stirring for 1 hour. Thereafter, the mixture was filtered with filter paper and distilled under reduced pressure at 120° C. for 3 hours to remove the solvent and unreacted materials to prepare a hydrophilic compound.

The prepared hydrophilic compound was represented by the following Chemical Formula 4, and had a weight average molecular weight (Mw) of about 250 g/mol and a hydroxyl group content of 28±2 wt%.

Preparation Examples 2 to 4.

A hydrophilic compound was prepared in the same manner as in Preparation Example 1, except that the content of 2-(prop-2-enoxymethyl)oxirane, a glycidyl compound, as a reaction material was adjusted as shown in Table 1.

(parts by weight) Preparation Example 1 Preparation 2 Preparation 3 Preparation 4 pentaethritol 17.7 17.7 17.7 17.7 2-(prop-2-enoxymethyl)oxirane 13.35 9.7 20.6 26.6 dimethyl sulfoxide 64.99 64.99 64.99 90.99 potassium hydroxide 0.06 0.06 0.06 0.08 corrector 3.9 3.9 3.9 5.5 Mw of hydrophilic compounds 250 g/mol 140 g/mol 230 g/mol 592 g/mol Hydroxyl group content of hydrophilic compound 28±2% by weight 37% by weight 25% by weight 12% by weight

Example 1. Preparation of hydrophilic silicone

1.93 parts by weight of the hydrophilic compound of Preparation Example 1, 2.45 parts by weight of organohydrogenpolysiloxane (MHBP), 10.85 parts by weight of isopropanol (IPA), and 24.52 parts by weight of dimethylpolysiloxane (Dimethicone-2cSt) were added to the reaction vessel and stirred for 10 minutes . After adding 0.01 parts by weight of the catalyst, the temperature was raised to 60° C. and reacted for 1 hour. After removing IPA by distillation under reduced pressure at 80° C. for 3 hours, 11.2 parts by weight of organopolysiloxane was added and reacted for 3 hours. After cooling to room temperature, and 3 rolls pulverized, 49.04 parts by weight of dimethylpolysiloxane (Dimethicone-2cSt) was added and diluted to prepare a hydrophilic silicone having a solid content of 15.5% by weight.

The prepared hydrophilic silicone had a viscosity of 270,000 cP at 25° C., and had a milky white appearance.

Examples 2 to 5 and Comparative Examples 1 to 5.

A silicone was prepared in the same manner as in Example 1, except that the components having the same content as in Tables 2 and 3 were used.

(parts by weight) Example 1 Example 2 Example 3 Example 4 Example 5 Hydrophilic compound of Preparation Example 1 1.93 1.26 1.26 1.26 4.01 Hydrophilic compound of Preparation Example 2 - - - - - Hydrophilic compound of Preparation Example 3 - - - - - Organopolysiloxane 11.2 12.42 22.1 12.42 11.2 Organohydrogenpolysiloxane 2.45 1.83 1.83 7.40 2.45 IPA 10.85 10.85 10.85 10.85 10.85 catalyst 0.01 0.01 0.01 0.01 0.01 dimethicone 73.56 73.63 63.95 68.06 71.48 total amount 100.00 100.00 100.00 100.00 100.00 Exterior milk white
paste milk white
paste milk white
paste milky paste milk white
paste Solid content (wt%) 15.50 15.50 25.20 21.05 17.70 Viscosity at 25°C (cP) 270,000 270,000 75,000 82,000 420,000

(parts by weight) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Hydrophilic compound of Preparation Example 1 - - - 5.9 0.05 Hydrophilic compound of Preparation Example 2 1.26 - - - - Hydrophilic compound of Preparation Example 3 - 1.26 - - - Hydrophilic compound of Preparation Example 4 - - 1.93 - - Organopolysiloxane 12.42 12.42 11.2 11.2 11.2 Organohydrogenpolysiloxane 1.83 1.83 2.45 2.45 2.45 IPA 10.85 10.85 10.85 10.85 10.85 catalyst 0.01 0.01 0.01 0.01 0.01 dimethicone 73.63 73.63 73.56 69.59 75.44 total amount 100.00 100.00 100.00 100.00 100.00 Exterior milk white
paste milk white
paste translucent
paste translucent
paste milk white
paste Solid content (wt%) 15.50 15.50 15.6 19.6 13.7 Viscosity at 25°C (cP) 186,000 246,000 275,000 495,000 120,000

Hereinafter, the manufacturers and product names, or component names, etc. of each component used in Comparative Examples and Examples are shown in Table 4.

ingredient note organo polysiloxane

비닐기 함량: 0.2mmol/g, 25℃에서의 점도: 400mPa·s, Mw: 10,000g/mol

Vinyl group content: 0.2 mmol/g, viscosity at 25°C: 400 mPa s, Mw: 10,000 g/mol catalyst PT-VTSC-1.0PS (Platinum and (0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane, Platinum-(0)-1,3-divinyl-1,1,3 ,3-tetramethyldisiloxane) (platinum content: 1% by weight) Organohydrogen polysiloxane

Content of hydrogen (SiH) bonded to silicon: 3 mmol/g, Mw: 30,000 g/mol

experimental example. characterization

The physical properties of the silicone prepared in Examples and Comparative Examples were measured in the following manner, and the results are shown in Table 5 below.

(1) hydrophilicity

The silicone compounds of Examples and Comparative Examples were prepared as water-in-oil emulsions corresponding to the following formulations, and emulsification performance was evaluated.

Specifically, 3 parts by weight of the silicone compound and 15 parts by weight of decamethylcyclopentasiloxane (D5) were stirred to prepare a phase A. Further, 72.9 parts by weight of ionized water, 8 parts by weight of glycerin, 0.8 parts by weight of sodium chloride, and 0.3 parts by weight of phenoxyethanol were stirred to prepare phase B. Thereafter, a water-in-oil type emulsion was prepared by adding the B phase in small amounts while stirring the A phase.

The evaluation criteria are five steps, very good when silicone and ionized water are emulsified without phase separation and dissolves easily in water, excellent when emulsified without phase separation or it takes some time to dissolve in water. When a small amount of silicone remains when seen or forms a small oil band when dissolved in water, it is normal, when silicone and ionized water are not partially emulsified, slightly insufficient, and silicone and ionized water remain in a state of not mixing at all. In this case, it was evaluated as very insufficient.

(2) stability

After storing the silicone of Examples and Comparative Examples in an oven at 80° C. for 2 days, aggregation or oil separation of the silicone was visually observed.

(3) compatibility

After mixing 10 parts by weight of octylmethoxyxinnamate (OMC) as an organic oil sunscreen to 90 parts by weight of the silicone of Examples and Comparative Examples, the transparency was evaluated visually, and very transparent, transparent, translucent, slightly opaque and opaque It was evaluated in 5 steps.

(4) feeling of use

0.20 g of silicone of Examples and Comparative Examples was placed on the back of the hand and spread thinly as if drawing a circle, and the feeling of use was evaluated through the touch and skin sensation during application. Specifically, the soft and smooth spread, little stickiness, and moisture level were compared. At this time, the evaluation results were divided into five levels: very good, excellent, average, slightly lacking, and insufficient.

hydrophilic stability compatibility feeling Example 1 very good No clumping and oil separation Transparency very good Example 2 very good No clumping and oil separation very transparent very good Example 3 Great No clumping and oil separation Transparency Great Example 4 Great No clumping and oil separation Transparency Great Example 5 Great No clumping and oil separation Transparency usually Comparative Example 1 lack oil separation opacity lack Comparative Example 2 very lacking oil separation opacity lack Comparative Example 3 lack oil separation opacity lack Comparative Example 4 usually oil separation opacity lack Comparative Example 5 usually oil separation opacity lack

As shown in Table 5, the silicones of Examples 1 to 5 were excellent in hydrophilicity, stability, compatibility, and feeling of use.

On the other hand, the silicones of Comparative Examples 1 to 3 containing a hydrophilic compound prepared by using a small amount or excess of a glycidyl compound, and Comparative Examples 4 and 5 containing a small amount or an excessive amount of the hydrophilic compound lack hydrophilicity, and stability Due to this lack, oil separation occurred, and compatibility and feeling of use were insufficient.

Claims (7)

hydrophilic compounds, organopolysiloxanes and organohydrogenpolysiloxanes;
The hydrophilic compound is represented by the following formula (1), the hydroxyl group (-OH) content is 10 to 40% by weight based on the total weight of the compound, the weight average molecular weight (Mw) is 100 to 500 g / mol,
The hydrophilic compound is prepared by reacting a glycidyl compound and a polyhydric alcohol compound in a weight ratio of 1: 1.0 to 1.5,
Wherein the organopolysiloxane comprises an alkenyl group, a polysiloxane composition:
[Formula 1]

In Formula 1,
R ¹ is C _2-10 alkenyl,
R ² and R ³ are each independently C _1-10 alkylene,
n is an integer from 1 to 3. delete delete The method according to claim 1,
The organopolysiloxane has an alkenyl group content of 0.05 to 0.2 mmol/g,
The organohydrogenpolysiloxane has a weight average molecular weight of 2,000 to 40,000 g/mol and a content of hydrogen groups directly bonded to silicon (SiH) of 0.1 to 4.5 mmol/g, a polysiloxane composition. The method according to claim 1,
The composition comprises 0.1 to 5 parts by weight of a hydrophilic compound, 5 to 20 parts by weight of an organopolysiloxane and 0.1 to 5 parts by weight of an organohydrogenpolysiloxane. A hydrophilic silicone prepared from the polysiloxane composition of any one of claims 1, 4 and 5. 7. The method of claim 6,
The hydrophilic silicone has a solid content of 10 to 30% by weight based on the total weight, and a viscosity of 50,000 to 600,000 cP at 25° C., the hydrophilic silicone.