CN109607555B - A kind of high friction high transparent toothpaste silica and preparation method thereof - Google Patents
A kind of high friction high transparent toothpaste silica and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
- C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/28—Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
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Abstract
The invention belongs to Silica Using for Toothpaste technical fields, and in particular to a kind of high friction high transparent toothpaste silica and preparation method thereof.Preparation method of the present invention includes S1, metabisulfite solution is added into reactor tank, is warming up to 60~65 DEG C；S2,60~65 DEG C are warming up to after being added with stirring sodium silicate solution, sulfuric acid solution is added dropwise, when pH value is 8.5~9.5, stop acid adding, ageing；S3, sodium silicate solution is added and sulfuric acid solution is reacted simultaneously, control process pH value is 8.0~9.0, after sodium silicate solution adds, continues that sulfuric acid solution to pH value is added dropwise to be 4.5~5.0；S4, the silica of formation is subjected to filters pressing, washed, spray drying, air-flow is broken, obtains silica.Inventive silica light transmittance >=90% under index of refraction 1.448~1.460, copper loss value >=15mg are provided simultaneously with high transparency and high friction clean-up performance under high refractive index.
Description
Technical field
The invention belongs to Silica Using for Toothpaste technical fields, and in particular to a kind of high friction high transparent toothpaste titanium dioxide
Silicon and preparation method thereof.
Background technique
In recent years, transparent toothpaste increasingly has been favored by people, the transparent type toothpaste of especially high friction spatter property,
Not only there is appearance glittering and translucent, bright in colour, but also have effects that tooth-whitening, be well received by consumers.While with
Social progress, kind, class and the technology content of toothpaste are also continuously improved, some specific functionality raw materials, such as bioactivity
Glass, peroxide, hydrogen peroxide and probiotics etc. also begin to join in tooth paste product.These specific functionality raw materials are met water-soluble
Hydrolysis occurs after solution or changes, leads to functional raw material failure or toothpaste flatulence, such as peroxide, hydrogen peroxide and sodium bicarbonate
Deng.Therefore, in order to meet these application requirements of specific function raw material in formulation of tooth-paste, few water/anhydrous transparent tooth is needed
Paste formulation.
Currently, silica is spherical porous structure, the abrasion tooth that not sharp corner angle will not be excessive, and have
Physicochemical properties are stable, cleaning capacity is strong and toothpaste Miscibility is good, can be used for the features such as preparation of transparent toothpaste, mesh
It is preceding to be widely used in toothpaste industry.In general, the copper loss value of general silica is within 2.0mg；Medium friction
The copper loss value of type silica is between 2.0~10.0mg；The copper loss value of high friction type silica is then greater than 10.0mg, generally
It is advisable no more than 20.0mg, otherwise enamel easy to wear.However the friction cleaning force of silica and light transmittance are the two of opposition
A factor, general silicon dioxide structure is more closely knit, and friction is better, and light transmittance is poorer, therefore, the high silica of light transmittance
Friction value is low, and cleaning effect is bad, and the silica light transmittance of high friction value is lower, cannot apply well, even if simultaneously
Silica with high transparency (light transmittance is 90% or more) and high friction (copper loss value is 10mg or more), but its index of refraction
(about 1.4425) are low, applied to can only be made into translucent toothpaste after anhydrous formulation of tooth-paste.
Make transparent toothpaste, it is necessary to which the index of refraction of the liquid-phase system and solid system that make lotion is close, even up to
It is consistent.The main component of few water/anhydrous toothpaste liquid-phase system is wetting agent, and sorbierite, polyethylene glycol and glycerol belong to
Common wetting agent.In general, silica index of refraction is in 1.4350~1.4600 ranges, and 70% sorbierite index of refraction
It is 1.457, the index of refraction of polyethylene glycol is 1.46.Ratio by adjusting each wetting agent makes the index of refraction one of liquid phase and solid phase
It causes, to reach transparent effect.Other than index of refraction, the light transmittance of silica is also extremely important, general to require 90%
More than.As long as being provided simultaneously with above two conditions, diffusing reflection would not be generated, to form the good lotion of transparency.Therefore, two
Silica has to be larger than 90% in the light transmittance of 1.46 or more index of refraction, can just prepare few water/anhydrous transparent toothpaste.
It, should if patent document CN105776230A discloses a kind of preparation method of transparent toothpaste silica that cleans the teeth
Method includes the sodium carbonate liquor that (1) configures 25~28wt%, is then added in the sodium silicate solution of 1.6~2.2M, is mixed
Close liquid；(2) 4~8m of metabisulfite solution of 11.0~15.0wt% is added into reaction kettle3, it is heated to 70~80 DEG C, under stirring
2.5~3.2M sodium silicate solution (modulus is 3.3~3.45) 3~5m is added dropwise simultaneously3With the sulfuric acid solution of 10.0~12.0M, protect
Holding process pH is 7.5~9.5, after sodium silicate solution is added dropwise, and continues that sulfuric acid solution is added dropwise to pH to be 6.0~7.0, stirs 10
~15min；(3) 4~6m of water is continuously added into aforesaid reaction vessel3, 70~80 DEG C are heated to, stirring is lower while being added dropwise described mixed
Close 8~10m of liquid3With the sulfuric acid solution of 10.0~12.0M, keeping process pH is 5.5~7.5, after mixed liquor is added dropwise, control
Reaction end pH is 6.0~7.0, stirs 10~15min, and filters pressing, washing, spray drying, air-flow are broken, obtain silica.
The silica existing high friction cleaning value and light transmittance, and there is thickening power, but the silica belongs to low
Index of refraction has high transparency under (1.4300~1.4400), is suitable only for being applied to the transparent toothpaste that water content is 16~21%
In, and its copper loss value is about 6~8mg, belongs to medium friction type silica.
For another example patent document CN107792861A discloses a kind of preparation of low index of refraction high transparency friction type silica
Method, this method include that (1) 11~13m of metabisulfite solution is added into reactor tank3, 80~95 DEG C are heated to, under stirring simultaneously
8.5~12m of sodium silicate solution is added dropwise3(modulus is 2.5~3.0) and 4.0~5.0M sulfuric acid solution, control the dropwise addition of sulfuric acid solution
Speed is to guarantee that reaction process pH value for 3.0~4.5, continues 10~15min of stirring after being added dropwise；(2) by the dioxy of formation
SiClx carries out filters pressing, washing, and silica is made in spray drying, air-flow crushing.The preparation method is simple, and its silica
Light transmittance in 1.438~1.450 range of index of refraction has the characteristic of high transparency under low index of refraction up to 95% or more,
Equally it is only suitable for being applied in aqueous transparent toothpaste, while the copper loss value of the silica is relatively low, in 5mg hereinafter, friction cleaning
Property is not good enough.
In conclusion producing a kind of high friction, Gao Zheguang, high transparent toothpaste are very important with silica.
Summary of the invention
In order to solve the problems in the existing technology (light transmittance of such as existing silica in 1.450 or more index of refraction
Lower than 85% and its copper loss value is relatively low) etc., present invention firstly provides a kind of systems of high friction high transparent toothpaste silica
Preparation Method, this method have been made by two step hydrothermal deposition methods, strict control material concentration and reaction temperature and pH value in refractive power
Lower light transmittance >=90% of rate 1.448~1.460, copper loss value >=15mg are provided simultaneously with high transparency and high friction under high refractive index
The silica of clean-up performance.
The preparation method of high friction high transparent toothpaste silica provided by the invention, comprising the following steps:
S1,13~15m of metabisulfite solution is added into reactor tank3, stirring is opened, is warming up to 60~65 DEG C；
S2, it is added with stirring 3~5m of sodium silicate solution3, after sodium silicate solution are added, 60~65 DEG C are warming up to, is opened
Begin that sulfuric acid solution is added dropwise, when pH value is 8.5~9.5, stop acid adding, control acid addition time is 20~30min, is then aged
10min；
S3,11~12m of sodium silicate solution is added simultaneously3Cocurrent neutralization reaction, control process pH value are carried out with sulfuric acid solution
It is 8.0~9.0, after sodium silicate solution adds, continues that sulfuric acid solution to pH value is added dropwise to be 4.5~5.0, stop acid adding, stir
Mix 10min；
S4, the silica of formation is carried out to filters pressing, washing, being crushed to partial size by air-flow after spray drying is 8~12 μ
M obtains high friction high transparent toothpaste silica.
Further, the mass percent concentration of the metabisulfite solution is 4.0~6.0%.
Further, the modulus of the sodium silicate solution is 3.4~3.5, and concentration is 1.5~2.0mol/L.
Further, the concentration of the sulfuric acid solution is 14~16mol/L.
Further, in the step S3, the addition flow velocity of sodium silicate solution is 14~15m3/h。
Further, the revolving speed of the stirring is 35~40Hz.
Correspondingly, the present invention also provides the preparation method by above-mentioned high friction high transparent toothpaste silica is made
The silica obtained, silica light transmittance >=90% under index of refraction 1.448~1.460, copper loss value >=15mg are suitble to answer
For being provided for the specific functionalities raw material such as peroxide, hydrogen peroxide and probiotics in few water or anhydrous transparent toothpaste composition
One suitable toothpaste system, while improving the quality of transparent toothpaste.
The reaction mechanism is as follows for the preparation method of high friction high transparent toothpaste silica of the invention:
The present invention uses two step hydrothermal deposition methods, and the sodium silicate solution and concentration for being 3.4~3.5 with modulus be 14~
The concentrated sulfuric acid of 16mol/L drips the charging of alkali by acid using metabisulfite solution as reaction promoter as reaction raw materials, the first step
Mode directly uses strong sulfuric acid response, under high-speed stirred and relatively low reaction temperature, so that initial loose gel particles
Sub quickly to be formed, the crystal seed index of refraction that this single step reaction generates is high, and corresponding light transmittance is also high, continues the on this basis
Two step soda acids are the same as drop；During second step soda acid is with dripping, with the addition of the concentrated sulfuric acid, system continues heat release, so that with drop
Temperature of reaction system can maintain 85~95 DEG C of high temperature, while in the case where system pH is 8.0~9.0, crystal seed continues to give birth to
Long, silica structure while keeping high transparency becomes fine and close, and attriting performance is effectively improved.Therefore, by adopting
With two different reactive modes, silica is made to have both high transparency and high friction clean-up performance under high refractive index.
Therefore, compared with prior art, present invention has an advantage that
(1) preparation method of the high friction high transparent toothpaste silica of the present invention uses the silicon of same modulus and concentration
Acid sodium solution and sulfuric acid solution participate in reaction, and simple process, stabilization, condition is easily-controllable, and directly use strong sulfuric acid response, utilize
The concentrated sulfuric acid continues temperature needed for heat release reaches reaction, has saved energy consumption, and obtains light transmittance height and mill under high refractive index
Wipe the strong silica of clean-up performance.
(2) the high friction high transparent toothpaste silica of the present invention under index of refraction 1.448~1.460 light transmittance >=
90%, copper loss value >=15mg is suitably applied in few water/anhydrous transparent toothpaste composition, is peroxide, hydrogen peroxide and probiotics
Etc. specific functionalities raw material provide a suitable toothpaste system, while improving the quality of transparent toothpaste, have extensive
Application prospect.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
High friction high transparent toothpaste silica of embodiment 1, the present invention and preparation method thereof
S1, the metabisulfite solution 13m that mass percent concentration is 4.0% is added into reactor tank3, open stirring, control
Revolving speed is 35Hz, is warming up to 60 DEG C；
S2, it is added with stirring sodium silicate solution 3m3, after sodium silicate solution is added, 60 DEG C are warming up to, starts that sulphur is added dropwise
Acid solution stops acid adding when pH value is 8.5, and control acid addition time is 20min, is then aged 10min；
S3, sodium silicate solution 11m is added simultaneously3Cocurrent neutralization reaction is carried out with sulfuric acid solution, controls sodium silicate solution
Addition flow velocity is 14m3/ h, and pass through the flow velocity for adjusting sulfuric acid solution with control process pH value as 8.0, sodium silicate solution adds
After, continue that sulfuric acid solution to pH value is added dropwise to be 4.5, stops acid adding, stir 10min；
S4, the silica of formation being carried out to filters pressing, washing, being crushed to partial size by air-flow after spray drying is 10 μm,
Obtain high friction high transparent toothpaste silica.
The modulus of the sodium silicate solution is 3.4, concentration 1.5mol/L；The concentration of the sulfuric acid solution is 14mol/L.
High friction high transparent toothpaste silica of embodiment 2, the present invention and preparation method thereof
S1, the metabisulfite solution 15m that mass percent concentration is 6.0% is added into reactor tank3, open stirring, control
Revolving speed is 40Hz, is warming up to 65 DEG C；
S2, it is added with stirring sodium silicate solution 5m3, after sodium silicate solution is added, 65 DEG C are warming up to, starts that sulphur is added dropwise
Acid solution stops acid adding when pH value is 9.5, and control acid addition time is 30min, is then aged 10min；
S3, sodium silicate solution 12m is added simultaneously3Cocurrent neutralization reaction is carried out with sulfuric acid solution, controls sodium silicate solution
Addition flow velocity is 15m3/ h, and pass through the flow velocity for adjusting sulfuric acid solution with control process pH value as 9.0, sodium silicate solution adds
After, continue that sulfuric acid solution to pH value is added dropwise to be 5.0, stops acid adding, stir 10min；
S4, the silica of formation being carried out to filters pressing, washing, being crushed to partial size by air-flow after spray drying is 10 μm,
Obtain high friction high transparent toothpaste silica.
The modulus of the sodium silicate solution is 3.5, concentration 2.0mol/L；The concentration of the sulfuric acid solution is 16mol/L.
High friction high transparent toothpaste silica of embodiment 3, the present invention and preparation method thereof
S1, the metabisulfite solution 14m that mass percent concentration is 5.0% is added into reactor tank3, open stirring, control
Revolving speed is 40Hz, is warming up to 60 DEG C；
S2, it is added with stirring sodium silicate solution 4m3, after sodium silicate solution is added, 65 DEG C are warming up to, starts that sulphur is added dropwise
Acid solution stops acid adding when pH value is 9.0, and control acid addition time is 25min, is then aged 10min；
S3, sodium silicate solution 11m is added simultaneously3Cocurrent neutralization reaction is carried out with sulfuric acid solution, controls sodium silicate solution
Addition flow velocity is 14m3/ h, and pass through the flow velocity for adjusting sulfuric acid solution with control process pH value as 8.0, sodium silicate solution adds
After, continue that sulfuric acid solution to pH value is added dropwise to be 4.5, stops acid adding, stir 10min；
S4, the silica of formation being carried out to filters pressing, washing, being crushed to partial size by air-flow after spray drying is 10 μm,
Obtain high friction high transparent toothpaste silica.
The modulus of the sodium silicate solution is 3.4, concentration 1.8mol/L；The concentration of the sulfuric acid solution is 15mol/L.
High friction high transparent toothpaste silica of embodiment 4, the present invention and preparation method thereof
S1, the metabisulfite solution 13m that mass percent concentration is 5.0% is added into reactor tank3, open stirring, control
Revolving speed is 40Hz, is warming up to 65 DEG C；
S2, it is added with stirring sodium silicate solution 4m3, after sodium silicate solution is added, 65 DEG C are warming up to, starts that sulphur is added dropwise
Acid solution stops acid adding when pH value is 9.5, and control acid addition time is 30min, is then aged 10min；
S3, sodium silicate solution 11m is added simultaneously3Cocurrent neutralization reaction is carried out with sulfuric acid solution, controls sodium silicate solution
Addition flow velocity is 15m3/ h, and pass through the flow velocity for adjusting sulfuric acid solution with control process pH value as 9.0, sodium silicate solution adds
After, continue that sulfuric acid solution to pH value is added dropwise to be 4.5, stops acid adding, stir 10min；
S4, the silica of formation being carried out to filters pressing, washing, being crushed to partial size by air-flow after spray drying is 10 μm,
Obtain high friction high transparent toothpaste silica.
The modulus of the sodium silicate solution is 3.4, concentration 1.5mol/L；The concentration of the sulfuric acid solution is 16mol/L.
Comparative example 1
Compared with Example 3, the difference of this comparative example is only that: the modulus of sodium silicate solution is 3.0, and concentration is
1.2mol/L。
Comparative example 2
Compared with Example 3, the difference of this comparative example is only that: the modulus of sodium silicate solution is 3.4, and concentration is
2.5mol/L。
Comparative example 3
Compared with Example 3, the difference of this comparative example is only that: the concentration of sulfuric acid solution is 8mol/L.
Comparative example 4
Compared with Example 3, the difference of this comparative example is only that: the weight percent concentration of metabisulfite solution is 7%.
Comparative example 5
Compared with Example 3, the difference of this comparative example is only that: control process pH value is 9.5 in step S3.
Comparative example 6
Compared with Example 3, the difference of this comparative example is only that: after opening stirring, control revolving speed is 45Hz.
The performance detection of the high friction high transparent toothpaste silica of test example one, the present invention
To silica made from the embodiment of the present invention 1~4, comparative example 1~6 in 1.448~1.460 range of index of refraction
Light transmittance and copper loss value (measuring method of copper loss value: dispersing silica in 70% sorbierite, and grit is crossed in laboratory
Analyzer rubs 9999 times back and forth on the copper sheet for submerged dispersion liquid, and the loss value for finally weighing copper sheet friction front and back is copper
Consumption value) it is detected, it as a result see the table below 1.
The performance test results of each silica of table 1
From upper table 1:
(1) light transmittance >=90% of 1~4 silica of the embodiment of the present invention in 1.448~1.460 range of index of refraction,
And copper loss value >=15mg, but it is no more than 20mg, prompt inventive silica that both there is the characteristic that light transmittance is high under high refractive index,
There is excellent friction clean-up performance again, be applied in few water/anhydrous formulation of tooth-paste, only toothpaste does not bring the outer of transparent clear
It sees, while also assigning the good oral cleaning performance of toothpaste.
(2) compared with the embodiment of the present invention 3, comparative example 1 reduces the modulus and concentration of sodium silicate solution, and light transmittance is bright
It is aobvious to reduce；Comparative example 2 then improves the concentration of sodium silicate solution, and light transmittance is decreased obviously, and copper loss value is then sharply increased；It is right
Ratio 3 reduces the concentration of sulfuric acid solution, and light transmittance gradually reduces in 1.448~1.460 range of index of refraction, copper loss value
It decreases；Comparative example 4 improves the concentration of metabisulfite solution, and as a result not only light transmittance gradually declines its silica, and
Copper loss value improves；Comparative example 5 improves pH value in reaction, and light transmittance and copper loss value are declined；Comparative example 6 improves stirring
Speed, light transmittance are substantially reduced, and copper loss value increases.Each parameter in preparation method of the present invention is prompted to complement each other with step, from
And high friction high transparent toothpaste silica is prepared.
The application effect of the high friction high transparent toothpaste silica of test example two, the present invention
The high friction high transparent toothpaste silica of the embodiment of the present invention 1~4 is applied in few water/anhydrous toothpaste,
Toothpaste 1~4 is made respectively.The specific formula of anhydrous toothpaste is following (mass percent): embodiment silica 1 5%, thickening type
Silica 5%, sorbierite 62%, polyethylene glycol 8%, carboxymethyl cellulose 0.6%, carragheen 0.4%, saccharin 0.2%, benzene
Sodium formate 0.2%, pigment 0.2%, essence 1%, lauryl sodium sulfate 2% and water 5.4%.
Above-mentioned toothpaste is detected by 8372 toothpaste standard of GB/T, lotion appearance children is sliding fine and smooth, glittering and translucent, transparent
Degree is high, and pH value 7.4, consistency is moderate, is 14mm, predominantly detects the requirement that index result meets toothpaste standard.
Wherein, the perspective degree of each toothpaste is as shown in table 2 below.
Each gel toothpaste clarity testing result of table 2
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (3)
1. a kind of preparation method of high friction high transparent toothpaste silica, which comprises the following steps:
S1,13~15m of metabisulfite solution is added into reactor tank3, stirring is opened, is warming up to 60~65 DEG C；
S2, it is added with stirring 3~5m of sodium silicate solution3, after sodium silicate solution are added, 60~65 DEG C are warming up to, starts to be added dropwise
Sulfuric acid solution stops acid adding when pH value is 8.5~9.5, and control acid addition time is 20~30min, is then aged 10min；
S3,11~12m of sodium silicate solution is added simultaneously3Cocurrent neutralization reaction is carried out with sulfuric acid solution, control process pH value is 8.0
~9.0, after sodium silicate solution adds, continues that sulfuric acid solution to pH value is added dropwise to be 4.5~5.0, stop acid adding, stirring
10min；
S4, the silica of formation is carried out to filters pressing, washing, being crushed to partial size by air-flow after spray drying is 8~12 μm, is obtained
To height friction high transparent toothpaste silica；
The mass percent concentration of the metabisulfite solution is 4.0~6.0%；
The modulus of the sodium silicate solution is 3.4~3.5, and concentration is 1.5~2.0mol/L；
The concentration of the sulfuric acid solution is 14~16mol/L.
2. the preparation method of high friction high transparent toothpaste silica according to claim 1, which is characterized in that described
In step S3, the addition flow velocity of sodium silicate solution is 14~15m3/h。
3. dioxy obtained by the preparation method of high friction high transparent toothpaste silica according to claim 1 or 2
SiClx, which is characterized in that silica light transmittance >=90% under index of refraction 1.448~1.460, copper loss value >=15mg.
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| CN110371993B (en) * | 2019-07-26 | 2020-03-24 | 金三江(肇庆)硅材料股份有限公司 | Wet-type toothpaste silicon dioxide with anti-corrosion effect and preparation method thereof |
| CN111039297B (en) * | 2019-12-31 | 2020-11-27 | 广州市飞雪材料科技有限公司 | Low-viscosity precipitated silica for toothpaste and preparation method thereof |
| CN112456505B (en) * | 2020-12-16 | 2021-07-09 | 广州市飞雪材料科技有限公司 | Preparation method of silicon dioxide abrasive for high-density high-dispersion toothpaste |
| CN112938994B (en) * | 2021-03-23 | 2021-11-19 | 广州市飞雪材料科技有限公司 | Sand-feeling silica for toothpaste and preparation method thereof |
| CN112960677B (en) * | 2021-04-01 | 2021-10-26 | 广州市飞雪材料科技有限公司 | Precipitation method for preparing oral silicon dioxide with high oil absorption value and low viscosity |
| CN115321549B (en) * | 2022-09-01 | 2024-04-12 | 确成硅化学股份有限公司 | Preparation method of precipitated silica for toothpaste thickener |
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|---|---|---|---|---|
| FR2749576B1 (en) * | 1996-06-06 | 1998-09-04 | Rhone Poulenc Chimie | PROCESS FOR THE PREPARATION OF SILICA LIKELY TO BE USED IN TOOTHPASTE COMPOSITIONS |
| FR2809955B1 (en) * | 2000-06-07 | 2004-11-26 | Rhodia Chimie Sa | USE OF A HIGH STRUCTURE, DENSE AND DISPERSIBLE PRECIPITATION SILICA AS A THICKENING OR TEXTURING AGENT IN TOOTHPASTE COMPOSITIONS |
| FR2818630B1 (en) * | 2000-12-26 | 2003-10-03 | Rhodia Chimie Sa | PROCESS FOR THE PREPARATION OF SILICA SOILS |
| US6866711B2 (en) * | 2003-01-17 | 2005-03-15 | Fitzgerald Alphanso Sinclair | Composite pigment composition containing silica |
| FR2984870B1 (en) * | 2011-12-23 | 2014-03-21 | Rhodia Operations | NEW PROCESS FOR THE PREPARATION OF PRECIPITED SILICES |
| IN2014CN04607A (en) * | 2011-12-23 | 2015-09-18 | Rhodia Operations | |
| CN103274422B (en) * | 2013-05-31 | 2016-03-30 | 肇庆金三江硅材料有限公司 | Core-shell sediment silica, preparation method and the toothpaste containing this silicon-dioxide |
| CN105776230B (en) * | 2016-02-29 | 2017-03-22 | 广州市飞雪材料科技有限公司 | Preparation method of silicon dioxide for transparent tooth cleaning toothpaste |
| CN106276929B (en) * | 2016-07-29 | 2017-07-07 | 广州市飞雪材料科技有限公司 | A kind of preparation method of friction type silica |
| CN106986349B (en) * | 2017-05-27 | 2017-12-19 | 广州市飞雪材料科技有限公司 | A kind of preparation method of low defoaming silica |
| CN109607555B (en) * | 2019-01-02 | 2019-08-09 | 广州市飞雪材料科技有限公司 | A kind of high friction high transparent toothpaste silica and preparation method thereof |
-
2019
- 2019-01-02 CN CN201910010478.5A patent/CN109607555B/en active Active
- 2019-06-21 WO PCT/CN2019/092327 patent/WO2020140402A1/en active Application Filing
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| CN109607555A (en) | 2019-04-12 |
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