Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a water-dispersible polyether modified organosilicon elastomer gel and a preparation method and application thereof.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a water-dispersible polyether-modified silicone elastomer gel comprising a reaction raw material mixture comprising:
(A) An unsaturated group-containing polysilsesquioxane containing at least two unsaturated hydrocarbon groups;
(B) An organohydrogensiloxane containing at least two silicon hydrogen bonds;
(C) An unsaturated group-containing polyether containing at least one unsaturated hydrocarbon group;
And (3) catalyzing and reacting in (D) carrier fluid through (E) hydrosilylation catalyst.
Preferably, the molar ratio of the unsaturated group in the component (A) to the silicon-hydrogen bond in the component (B) is (0.1-1.5): 1, and for example, may be 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, 1.31:1, 1.4:1, etc.
Preferably, the feeding molar ratio of the unsaturated group in the component (A) to the silicon-hydrogen bond in the component (B) is (0.4-1): 1.
Preferably, the molar ratio of the unsaturated group in the component (C) to the silicon-hydrogen bond in the component (B) is (0.1-1.5): 1, and for example, may be 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, etc.
Preferably, the feeding molar ratio of the unsaturated group in the component (C) to the silicon-hydrogen bond in the component (B) is (0.3-1): 1.
Preferably, the molar ratio of the total unsaturated groups in the reaction raw material mixture to the silicon-hydrogen bonds is (0.8-2) 1, and for example, may be 0.9:1, 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1:5, 1.6:1, 1.7:1, 1.8:1, 1.9:1, etc.
Preferably, the unsaturated group-containing polysilsesquioxane of the formula (A) has a structure :(CH3)2R1SiO-[R2SiO3/2]x[CH3SiO3/2]y-SiR3(CH3)2(Ⅰ), shown in the chemical formula (I), wherein R 1、R2、R3 is independently selected from substituted or unsubstituted alkane groups and at least one or more unsaturated aliphatic groups, R 4 is independently selected from substituted or unsubstituted saturated alkane groups (such as C1-C16 linear or branched alkyl groups, more preferably any one of methyl, propyl, octyl and hexadecyl groups), and the substituent substituted by R 1、R2、R3、R4 is selected from any one of alkyl groups, alkenyl groups, aryl groups, hydroxyl groups, halogen groups, ether groups and ester groups, x=1-50, y=0-50, wherein (1-50) can be specifically selected from the values of 2, 4, 6, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48 and the like, and (0-50) can be specifically selected from the values of 1, 2, 4, 6, 10, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 46, 48 and the like.
Preferably, x=2 to 14 and y=0 to 16.
Preferably, the molecular weight of the component (A) is 4000-6000 g/mol.
Preferably, the alkenyl group content of the component (A) is 2.4-4.5 wt%.
Preferably, the unsaturated aliphatic hydrocarbon is an olefinically unsaturated group, and may be, for example, a C2-C8 linear olefin or a C2-C8 branched olefin.
Preferably, the unsaturated aliphatic hydrocarbon group is selected from any one of CH 2=CH-、CH2=CH-CH2-、CH2=C(CH3)-CH2CH2 -.
Preferably, said (B) organohydrogensiloxane said component (B) organohydrogensiloxane comprises a side hydrogen containing silicone oil and/or a terminal hydrogen containing silicone oil.
Preferably, the organohydrogensiloxane of component (B) has a structure :(CH3)3SiO[(CH3)HSiO]x[(R1)2SiO]y-Si(CH3)3(Ⅱ), as shown in formula (II) wherein x is a natural number in the range of 2 to 20, and may be, for example, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, etc., y is a natural number in the range of 0 to 500, and may be, for example, an alkyl or aryl group having a value of 1, 10, 50, 100, 150, 200, 250, 300, 350, 400, 450, etc., and R 1 is C1-20, and may be, for example, methyl, ethyl, propyl, butyl, pentyl, octyl, phenyl, etc.
More preferably, x=4 to 10 and y=10 to 100.
Preferably, the molecular weight of the component (B) is 4000-5000 g/mol.
Preferably, the SiH content of the component (B) is 0.1% -2%.
Preferably, the unsaturated polyether (C) has a structure shown as a chemical formula (III) R 4[(C2H4O)a(C3H6O)b H (III), wherein a and b are natural numbers of 0-50, a+b >2, and R 4 is unsaturated aliphatic hydrocarbon.
Preferably, a=10 to 22, and may take values of 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, etc., for example.
B=0 to 12, and may be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or the like.
Preferably, R 4 is selected from any one of CH 2=CH-、CH2=CH-CH2-、CH2=C(CH3)-CH2CH2 -.
Preferably, the fluid carrier of the component (D) is one or more of low-viscosity polysiloxane, alkane or grease with the viscosity of 1-50 mPa.s.
Preferably, the low-viscosity polysiloxane is one or more than two of polydimethylsiloxane, C2-C16 fatty alkane modified silicone oil, natural oil modified silicone oil and cyclopenta-dimethylsiloxane.
Preferably, the component (D) accounts for 60-90 wt% of the total feeding ratio.
Preferably, the component (D) accounts for 70-85 wt% of the total feeding ratio.
Preferably, the alkane is isomerised dodecane and/or isomerised hexadecane.
Preferably, the grease is any one or more than two of coconut oil, white pool seed oleate and olive oil.
Preferably, the hydrosilylation catalyst of component (E) comprises a platinum metal-based catalyst.
Preferably, the platinum metal catalyst is selected from one or more of chloroplatinic acid, karstedt catalyst and Speier catalyst.
In a second aspect, the invention provides a preparation method of the water-dispersible polyether-modified organosilicon elastomer gel, which comprises the following steps of adding the reaction raw material mixture, the component (D) carrier fluid and the component (E) hydrosilylation catalyst into a dispersing machine for reaction, and grinding to obtain the water-dispersible polyether-modified organosilicon elastomer gel.
Preferably, the reaction temperature is 25-95 ℃.
Preferably, the reaction time is 3-8 hours.
Preferably, the apparatus for performing the grinding is selected from any one of a three-roll grinder, a colloid mill, and a ball mill.
Preferably, the preparation method further comprises the step of adding a polymerization inhibitor for mixing after grinding.
Preferably, the addition amount of the polymerization inhibitor is 1-5 parts by weight.
Preferably, the polymerization inhibitor may be one or more selected from tocopherol, vitamin a palmitate, triphenyl phosphate, olefin or silicone oil oligomer containing a single unsaturated bond.
In a third aspect, the present invention provides the use of a water-dispersible polyether modified silicone elastomer gel as described above in cosmetics or personal care products.
Compared with the prior art, the invention has the following beneficial effects:
The present invention provides water-dispersible polyether modified silicone elastomer gels formed by the catalytic addition of polysilsesquioxane containing at least two unsaturated hydrocarbons and polydimethylsiloxane containing a single unsaturated hydrocarbon polyether with at least two silicon-hydrogen bonds in a suitable fluid carrier. The water-dispersible polyether modified organosilicon elastomer gel has a hydrophilic polyether group and a lipophilic silicon elastomer structure, and can be dispersed in an aqueous phase to form a stable aqueous emulsion system gel with elastomer characteristics. Meanwhile, the water-dispersible polyether modified organosilicon elastomer gel has a polysilsesquioxane resin structure, can provide special skin feel and film forming effect by combining a reticular siloxane chain, and can be widely applied to the fields of daily chemical products, personal care products and the like.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof. Unless specifically stated otherwise, the reagents, methods and apparatus employed in the present invention are those conventional in the art. In the present specification, "part" and "%" respectively mean "part by mass" and "% by mass" unless otherwise specified. And "molecular weight" is "number average molecular weight".
The following examples and comparative examples were tested using the following test methods.
The emulsifying effect is that 10g of water-dispersible polyether modified organic silicon elastomer gel is mixed with 5g of deionized water, then shearing and dispersing are carried out, the emulsifying effect of self-added water is observed, and another 10g of water-dispersible polyether modified organic silicon elastomer gel, 0.2g of hydrophilic surfactant (PEG-10 stearate) and 10g of deionized water are mixed, then shearing and dispersing are carried out, and the emulsifying effect of the hydrophilic surfactant is observed. The emulsion effect of adding water and hydrophilic surfactant is classified into three grades according to the emulsion effect, wherein ' excellent ' means that water can be added by itself to quickly form water-in-oil emulsion, hydrophilic surfactant can be added to quickly form stable oil-in-water emulsion, good ' means that water-in-oil emulsion can be formed, hydrophilic surfactant can be added to form stable oil-in-water emulsion, and ' poor ' means that water-in-oil emulsion is difficult to form, and the oil-in-water emulsion formed by adding hydrophilic surfactant stands to generate layering phenomenon.
Film-forming effect and skin feel 9g of water-dispersible polyether modified organosilicon elastomer gel and 1g of toner are uniformly mixed, and then the mixture is directly smeared on the skin of the back of the palm, and after 30 minutes, the mixture is dried, the skin feel and film-forming effect are felt. The skin feel and film forming effect were judged to be good or bad in terms of 1-5 points, with 1 being the worst and 5 being the best.
The structural formulae of APEG-10, APEG-12 and APEG-15 in the following examples and comparative examples are respectively CH2=CHCH2O(CH2CH2O)n H,n=10、CH2=CHCH2O(CH2CH2O)n H,n=12、CH2=CHCH2O(CH2CH2O)n H,n=15.
The side hydrogen containing silicone oils employed in the following examples have the following general structural formula:
(CH3)3SiO[(CH3)HSiO]x[(CH3)2SiO]y-Si(CH3)3(Ⅱ),x=2~10,y=10~100.
In the following examples and comparative examples, n A/nB represents the molar ratio of unsaturated groups in the unsaturated group-containing polysilsesquioxane to the silanol groups in the organohydrogensiloxane, and n C/nB represents the molar ratio of unsaturated groups in the unsaturated group-containing polyether to the silanol groups in the organohydrogensiloxane.
Examples 1-3 preparation of Water-dispersible polyether-modified Silicone elastomer gels of different Carrier fluids
Table 1 shows the raw materials and the charged weights thereof of examples 1 to 3, and the results of the related performance tests are shown. Wherein the structural formula of the polysilsesquioxane containing unsaturated groups is (CH3)2R1SiO-[R2SiO3/2]x[CH3SiO3/2]y-SiR3(CH3)2,R1, R 3 is vinyl, R 2 is methyl, x=14, y=0, the molecular weight is 4500, the vinyl content is 2.4%, the molecular weight of the side hydrogen silicone oil is 5000, the SiH content is 0.2%, and the polyether containing unsaturated groups is APEG-12 (chemical formula CH 2=CHCH2O(CH2CH2 O) n H, n=12.
TABLE 1 Water-dispersible polyether-modified Silicone elastomer gels of different Carriers
Examples 1 to 3 were prepared by the following preparation methods, except that the respective carriers used were different.
The preparation method comprises the following steps:
The preparation method comprises the steps of putting the raw materials shown in the table 1 and containing unsaturated group polysilsesquioxane, APEG-12, side hydrogen silicone oil, platinum catalyst and carrier into a dispersing machine, mixing and stirring, heating to 80 ℃ for reaction for 8 hours, putting into a three-roller grinder for grinding for 2 times after the reaction is completed, and adding polymerization inhibitor tocopherol and stirring uniformly. The product is tested by infrared IR and no SiH bond exists, which indicates that the SiH bond has all reacted, and the application test shows that the example 2 has more excellent self-emulsifying effect, can quickly form water-in-oil emulsion by adding water, and can quickly form stable oil-in-water emulsion by adding hydrophilic surfactant.
Examples 4-6 preparation of Water-dispersible polyether-modified Silicone elastomer gels of different unsaturated group-containing polyethers
Table 2 shows the raw materials and the charged weights thereof of examples 4 to 6, and the results of the related performance tests are shown. Wherein the structural formula of the polysilsesquioxane containing unsaturated groups is (CH3)2R1SiO-[R2SiO3/2]x[CH3SiO3/2]y-SiR3(CH3)2, R1, R 3 is vinyl, R 2 is=propyl, x=2, y=10, the molecular weight is 4000, the vinyl content is 2.7%, the molecular weight of the side hydrogen silicone oil is 4600g/mol, the SiH content is 0.15%, and the polyether containing unsaturated groups is sequentially APEG-10(CH2=CHCH2O(CH2CH2O)nH,n=10)、APEG-12(CH2=CHCH2O(CH2CH2O)n H,n=12)、APEG-15 (CH2=CHCH2O(CH2CH2O)nH,n=15).
TABLE 2
Examples 4 to 6 were each prepared by the following preparation method, except that the unsaturated group-containing polyethers used each were different.
The preparation method comprises the following steps:
The raw materials shown in the table 2, namely the polysilsesquioxane containing unsaturated groups, the polyether containing unsaturated groups, the hydrogen-containing silicone oil, the platinum catalyst and the 10CSt octyl silicone oil are put into a dispersing machine to be mixed and stirred, heated to 60 ℃ to react for 6 hours, and then put into a grinder to be ground for 2 times after the reaction is completed, and then the polymerization inhibitor tocopherol is added to be stirred uniformly. The product is tested by infrared IR and no SiH bond exists, which indicates that the SiH bond has all reacted, and the application test shows that the example 5 has more excellent self-emulsifying effect, can quickly form water-in-oil emulsion by adding water, and can quickly form stable oil-in-water emulsion by adding hydrophilic surfactant.
Examples 7-9 preparation of Water-dispersible polyether-modified Silicone elastomer gels with different olefin/SiH molar ratios
Table 3 shows the raw materials and the charged weights thereof for examples 7 to 9, and the results of the related performance tests are shown. Wherein the structural formula of the polysilsesquioxane containing unsaturated groups is (CH3)2R1SiO-[R2SiO3/2]x[CH3SiO3/2]y-SiR3(CH3)2, R1, R 3 is methyl, R 2 is=vinyl, x=2, y=16, the molecular weight is 6000, the vinyl content is 4.5%, the molecular weight of the side hydrogen silicone oil is 4600g/mol, the SiH content is 0.15%, and the polyether containing unsaturated groups is APEG-12 (chemical formula: CH 2=CHCH2O(CH2CH2 O) n H, n=12).
TABLE 3 Table 3
Examples 7-9 were all prepared using the following preparation methods, except that the molar ratios of olefin/SiH were different.
The preparation method comprises the following steps:
The raw materials shown in the table 3, namely, the polysilsesquioxane containing unsaturated groups, the polyether containing unsaturated groups, the hydrogen-containing silicone oil, the platinum catalyst and the 10CSt octyl silicone oil are put into a dispersing machine to be mixed and stirred, heated to 90 ℃ to react for 8 hours, and then put into a three-roller grinder to be ground for 2 times after the reaction is completed, and then the polymerization inhibitor tocopherol is added to be stirred uniformly. The product is tested by infrared IR and no SiH bond exists, which indicates that SiH bonds are fully reacted, and the application test shows that the example 8 has more excellent self-emulsifying effect, can quickly form water-in-oil emulsion by adding water, and can quickly form stable oil-in-water emulsion by adding hydrophilic surfactant.
Examples 10-14 preparation of Water-dispersible polyether modified Silicone elastomer gels of different n A/nB and n C/nB
Wherein the structural formula of the polysilsesquioxane containing unsaturated groups is (CH3)2R1SiO-[R2SiO3/2]x[CH3SiO3/2]y-SiR3(CH3)2, R1, R 3 is vinyl, R 2 is methyl, x=14, y=0, the molecular weight is 4500, the vinyl content is 2.4%, the molecular weight of the side hydrogen silicone oil is 5000, the SiH content is 0.2%, and the polyether containing unsaturated groups is APEG-12 (chemical formula CH 2=CHCH2O(CH2CH2 O) n H, n=12.
Table 4 shows the raw materials and the charged weights thereof for examples 10 to 14, and the results of the related performance tests are shown.
TABLE 4 Table 4
Examples 10 to 14 were prepared by the following preparation methods, with the difference that the amounts of the respective raw materials were different.
The preparation method comprises the following steps:
The raw materials shown in the table 4, namely, the polysilsesquioxane containing unsaturated groups, the polyether containing unsaturated groups, the hydrogen-containing silicone oil, the platinum catalyst and the 10CSt octyl silicone oil are put into a dispersing machine to be mixed and stirred, heated to 70 ℃ to react for 8 hours, and then put into a three-roller grinder to be ground for 2 times after the reaction is completed, and then the polymerization inhibitor tocopherol is added to be stirred uniformly. The product is tested by infrared IR that no SiH bond exists, which indicates that SiH bonds have all reacted, and the application test shows that example 10 and example 11 have more excellent self-emulsifying effect, water-in-oil cream can be quickly formed by self-adding water, and stable oil-in-water emulsion can be quickly formed by adding hydrophilic surfactant.
Comparative example 1
The comparative example differs from example 2 only in that the molecular weight of the comparative example was about 4500, the vinyl content was 2.4% by replacing the unsaturated group-containing polysilsesquioxane with an equivalent mass of vinyl silicone oil ((CH2=CH(CH3)2SiO[(CH3)2 SiO]x-Si(CH3)2CH=CH2),.
The obtained water-dispersible polyether modified organosilicon elastomer gel has no SiH bond after infrared IR test, which indicates that the SiH bond has reacted completely. And emulsion effect, film forming effect and skin feel were measured, and the obtained results are shown in table 5.
Comparative example 2
This comparative example differs from example 2 only in that this comparative example replaces the side-hydrogen silicone oil with an equivalent mass of hydrogen-containing polysilsesquioxane (CH 3)2HSiO-[CH3SiO3/2]x-SiH(CH3)2 (molecular weight about 5000, siH content 0.2%)) and the unsaturated group-containing polysilsesquioxane with an equivalent mass of vinyl silicone oil (CH2=CH(CH3)2SiO[(CH3)2SiO]x-Si(CH3)2CH=CH2)( (molecular weight about 4500, vinyl content 2.4%).
The obtained water-dispersible polyether modified organosilicon elastomer gel has no SiH bond after infrared IR test, which indicates that the SiH bond has reacted completely. And emulsion effect, film forming effect and skin feel were measured, and the obtained results are shown in table 5.
Comparative example 3
The comparative example differs from example 2 only in that the unsaturated group-containing silsesquioxane used in the comparative example was prepared by the following preparation method:
after reacting 100g of vinyltriethoxysilane, 48g of tetrahydrofuran, 24g of distilled water and 1g of dibutyltin dilaurate at 70 ℃ for 5 hours, small molecular substances are removed by spin evaporation, and vinyl-containing silsesquioxane is obtained.
N A/nB and other conditions remain unchanged.
TABLE 5
As can be seen from tables 1 to 4, the water-dispersible polyether-modified silicone elastomer gel provided by the invention has excellent emulsifying effect, film forming effect and skin feel.
The applicant states that the invention is illustrated by the above embodiments, but the invention is not limited to, i.e. it does not mean that the invention has to be carried out in dependence of the above embodiments. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.