CN104030303B - A kind of production method of Silica Using for Toothpaste friction agent - Google Patents
A kind of production method of Silica Using for Toothpaste friction agent Download PDFInfo
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- CN104030303B CN104030303B CN201410279465.5A CN201410279465A CN104030303B CN 104030303 B CN104030303 B CN 104030303B CN 201410279465 A CN201410279465 A CN 201410279465A CN 104030303 B CN104030303 B CN 104030303B
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Abstract
The present invention relates to a kind of production method of Silica Using for Toothpaste friction agent, comprising: in reaction vessel, add deionized water, sodium salt and anion surfactant, stir; Pressure in adjustment reaction vessel is 0.15 ~ 0.5MPa, temperature is 110 ~ 150 DEG C, then in reaction vessel, add water glass and dilute acid soln, the speed that adds of adjustment water glass and dilute acid soln makes the solution ph in reaction vessel control 9.0 ~ 9.2 simultaneously; After having reacted, in reaction vessel, add dilute acid soln, being acidified to pH value is 3.5 ± 0.2; After acidifying completes, by the solution left standstill ageing in reaction vessel, then successively by press filtration, washing, slurrying, spraying dry, pulverizing, obtain Silica Using for Toothpaste friction agent.Present invention process flow process is simple, and production efficiency is high, and obtained Silica Using for Toothpaste friction agent has good frictional coefficient and granule strength, and denudes moderate can not damaging gum.
Description
Technical field
The present invention relates to silicon-dioxide production technical field, is a kind of production method of Silica Using for Toothpaste friction agent specifically.
Background technology
Study and Development toothpaste level precipitated silica is the starting sixties in 20th century, develops and apply in the western countries of industrial technology prosperity.The manufacturer of most strength is French Luo Na company, German Degussa, Ji Lisi company of the U.S. in the world, produce high-end Silica Using for Toothpaste friction agent, and domestic production is backward in technique, can only produce low side, cheap product.
At present, Silica Using for Toothpaste friction agent is all adopt building-up reactions in normal pressure reactor, and granule strength, the frictional force of the silicon-dioxide of production are generally poor, can cause certain injury to gum.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the production method that technical problem to be solved by this invention is to provide a kind of Silica Using for Toothpaste friction agent obtains to produce the Silica Using for Toothpaste friction agent that granule strength is high, frictional coefficient is large.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A production method for Silica Using for Toothpaste friction agent, comprises the following steps:
Step 1, in reaction vessel, add the anion surfactant of the deionized water of 1 ~ 2 parts by volume, the sodium salt of 5 ~ 20 weight parts and 3 ~ 5 weight parts, stir;
Pressure in step 2, adjustment reaction vessel is 0.15 ~ 0.5MPa, temperature is 110 ~ 150 DEG C, the dilute acid soln of the water glass and 0.6 ~ 0.9 parts by volume that then simultaneously add 5 ~ 6 parts by volume in reaction vessel reacts, the speed that adds of adjustment water glass and dilute acid soln makes the solution ph in reaction vessel control 9.0 ~ 9.2, and the reaction times is 90 ~ 120min;
Step 3, reacted after, in reaction vessel, add dilute acid soln, be 3.5 ± 0.2 by the acidify solution in reaction vessel to pH value;
After step 4, acidifying complete, by the solution left standstill ageing 30 ~ 60min in reaction vessel, then successively by press filtration, washing, slurrying, spraying dry, pulverizing, obtain Silica Using for Toothpaste friction agent;
Wherein, described parts by volume: weight part=m
3: kg.
Beneficial effect of the present invention is:
Low in raw material price, technical process is simple, production efficiency is high, constant product quality, can suitability for industrialized production, obtained Silica Using for Toothpaste friction agent has good frictional coefficient and granule strength, and denude moderate can not damaging gum, can effectively absorb and discharge the effective constituent in toothpaste, the desensitization material etc. of purifying with fluorochemical, Tubulicid, sanguinarine(e) and herbal medicine has better consistency, simultaneously high, the good fluidity of transmittance, can meet all technical of Silica Using for Toothpaste friction agent.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized object and effect, be explained in detail below in conjunction with embodiment.
The design of most critical of the present invention is: carry out under reaction being placed in high-temperature and high-pressure conditions, high temperature and high pressure is utilized to improve the degree of supersaturation of silicon-dioxide in reaction mother liquor of reaction generation, improve speed of reaction and reaction process, the precursor making silicon-dioxide little dissolves rapidly the spheroidal particle increasing into large rule, reduce the specific surface area of silicon-dioxide, increase granular size and the granule strength of silicon dioxide granule, reduce silicon-dioxide to reunite, make silicon dioxide granule size stable homogeneous and improve the transmittance of silicon-dioxide, mobility, thus improve frictional coefficient and the granule strength of product, product is made to meet all technical of Silica Using for Toothpaste friction agent.In addition, utilize during Reactive Synthesis and add sodium salt and anion surfactant, silicon-dioxide building-up reactions is carried out to the control of structure, composition solid space network structure, thus ensure to denude moderate can not damaging gum while the frictional coefficient of raising product and granule strength, and effectively absorb and discharge the effective constituent in toothpaste, the desensitization material of purifying with fluorochemical, Tubulicid, sanguinarine(e) and herbal medicine has better consistency.
Concrete, the production method of the Silica Using for Toothpaste friction agent of present embodiment, comprises the following steps:
Step 1, in reaction vessel, add the anion surfactant of the deionized water of 1 ~ 2 parts by volume, the sodium salt of 5 ~ 20 weight parts and 3 ~ 5 weight parts, stir;
Pressure in step 2, adjustment reaction vessel is 0.15 ~ 0.5MPa, temperature is 110 ~ 150 DEG C, the dilute acid soln of the water glass and 0.6 ~ 0.9 parts by volume that then simultaneously add 5 ~ 6 parts by volume in reaction vessel reacts, the speed that adds of adjustment water glass and dilute acid soln makes the solution ph in reaction vessel control 9.0 ~ 9.2, and the reaction times is 90 ~ 120min;
Step 3, reacted after, in reaction vessel, add dilute acid soln, be 3.5 ± 0.2 by the acidify solution in reaction vessel to pH value;
After step 4, acidifying complete, by the solution left standstill ageing 30 ~ 60min in reaction vessel, then successively by press filtration, washing, slurrying, spraying dry, pulverizing, obtain Silica Using for Toothpaste friction agent;
Wherein, described parts by volume: weight part=m
3: kg.
Preferably, described deionization electrical conductivity of water is less than 10 μ S/cm.
Preferably, described sodium salt is the sodium salt that negatively charged ion is identical with the acid ion of dilute acid soln.When such as dilute acid soln selects dilute sulphuric acid, then sodium salt selects sodium sulfate; When dilute acid soln selects dilute hydrochloric acid, then sodium salt selects sodium-chlor.
Preferably, described anion surfactant is selected from one or more in Sodium Lauryl Sulphate BP/USP, sodium lauryl sulphate, alkyl diphenyl ether disulfonate and aliphatic alcohol polyoxyvinethene phosphate.
Preferably, in step 2, be 0.15 ~ 0.5MPa by passing into the saturated vapor pressure controlled in reaction vessel in the solution in reaction vessel, temperature is 110 ~ 150 DEG C.Described saturated vapor can be filtered by accurate filter in advance, to remove the impurity in saturated vapor.
Preferably, in step 2, described water glass and dilute acid soln stream join in reaction vessel and react.
Preferably, the modulus of described water glass is 2.5 ~ 3.5, SiO
2content is 5 ~ 18wt%, and transparency is greater than 200mm.The compound method of described water glass can refer to as described below: the solid water glass of the food grade of selected high-quality, modulus controls 2.5 ~ 3.5, drop in cylinder rotary spherical digester the water (i.e. deionized water) adding reverse osmosis membrane processing and cross, pass into the saturated steam through accurate filter process, be forced into 0.6 ~ 0.8MPa, pressurize 1 ~ 3 hour, and then the water (i.e. deionized water) adding that reverse osmosis membrane processing crosses, be mixed with SiO further
2content is the water glass of 5 ~ 18, and the water glass prepared obtains clear liquor through accurate filter, and the transparency > 200mm of water glass, stores for future use.
Preferably, described dilute acid soln is dilute sulphuric acid, dust technology, dilute hydrochloric acid or dilute phosphoric acid, and the massfraction of described dilute acid soln is 15 ~ 30wt%.The compound method of described dilute acid soln can refer to as described below: concentrated acid and the water (i.e. deionized water) crossed through reverse osmosis membrane processing are mixed with by graphite nitration mixture condenser the dilute acid soln that massfraction is 15 ~ 30wt%, store for future use.
Preferably, in step 4, described washing is first with the tap water after filtering, then is less than 200 μ S/cm by deionized water wash to the specific conductivity of filtrate.
Preferably, in step 4, the granularity D50 of the Silica Using for Toothpaste friction agent obtained after pulverizing is 5 ~ 10 μm.Described pulverizing adopts micronizer mill.
The present invention improves the degree of supersaturation of silicon-dioxide in reaction mother liquor of reaction generation by high temperature and high pressure, improve speed of reaction and reaction process, the precursor making silicon-dioxide little dissolves rapidly the spheroidal particle increasing into large rule, reduce the specific surface area of silicon-dioxide, increase granular size and the granule strength of silicon dioxide granule, reduce silicon-dioxide to reunite, make silicon dioxide granule size stable homogeneous and improve the transmittance of silicon-dioxide, mobility, thus improve frictional coefficient and the granule strength of product, product is made to meet all technical of Silica Using for Toothpaste friction agent.In addition, utilize during Reactive Synthesis and add sodium salt and anion surfactant, silicon-dioxide building-up reactions is carried out to the control of structure, composition solid space network structure, thus ensure to denude moderate can not damaging gum while the frictional coefficient of raising product and granule strength, and effectively absorb and discharge the effective constituent in toothpaste, the desensitization material of purifying with fluorochemical, Tubulicid, sanguinarine(e) and herbal medicine has better consistency.
From foregoing description, beneficial effect of the present invention is: low in raw material price, technical process is simple, production efficiency is high, constant product quality, can suitability for industrialized production, obtained Silica Using for Toothpaste friction agent has good frictional coefficient and granule strength, and denude moderate can not damaging gum, can effectively absorb and discharge the effective constituent in toothpaste, with fluorochemical, Tubulicid, the desensitization material etc. that sanguinarine(e) and herbal medicine are purified has better consistency, transmittance is high simultaneously, good fluidity, the all technical of Silica Using for Toothpaste friction agent can be met.
Embodiment 1
(1) raw material prepares
Water glass: modulus is 3.0, SiO
2content is 7wt%, transparency > 200mm;
Dilute acid soln: massfraction is the dilute sulphuric acid of 15%;
Deionized water: specific conductivity is less than 10 μ S/cm;
Sodium salt: sodium sulfate;
Anion surfactant: sodium lauryl sulphate.
(2) compressive reaction synthesis
First toward 10m
31m is added in airtight enamel pressure reaction still
3deionized water, open to stir and add sodium sulfate and the 3kg sodium lauryl sulphate of 5kg, pass into saturated vapor, the pressure controlled in reactor is 0.5MPa, and when temperature rises to 150 DEG C, and stream adds water glass 6m
3with dilute sulphuric acid 0.680m
3, and flow time controling at 2h, what control water glass and dilute sulphuric acid respectively adds inbound traffics, the pH value of reaction is controlled 9.0, and stream terminates rear continuation dilute sulphuric acid, and to be acidified to pH value be 3.5, ageing 30min, sheet frame material feeding, first with the tap water after filtering, then with deionized water wash to the specific conductivity < 200 μ S/cm of filtrate, slurrying, defibrination, spraying dry, is pulverized by micronizer mill, obtains the Silica Using for Toothpaste friction agent that granularity D50 is 5 ~ 10 μm.
Embodiment 2
(1) raw material prepares
Water glass: modulus is 3.2, SiO
2content is 10wt%, transparency > 200mm;
Dilute acid soln: massfraction is the dilute sulphuric acid of 18%;
Deionized water: specific conductivity is less than 10 μ S/cm;
Sodium salt: sodium sulfate;
Anion surfactant: sodium lauryl sulphate.
(2) compressive reaction synthesis
First toward 10m
31m is added in enamel reaction still
3water, open to stir and add sodium sulfate and the 5kg sodium lauryl sulphate of 10kg, pass into saturated vapor, the pressure controlled in reactor is 0.4MPa, and when temperature rises to 140 DEG C, and stream adds water glass 5m
3with dilute sulphuric acid 0.625m
3, and flow time controling at 1.5h, what control water glass and dilute sulphuric acid respectively adds inbound traffics, the pH value of reaction is controlled 9.5, and stream terminates rear continuation dilute sulphuric acid, and to be acidified to pH value be 3.5, ageing 30min, sheet frame material feeding, first with the tap water after filtering, then with deionized water wash to the specific conductivity < 200 μ S/cm of filtrate, slurrying, defibrination, spraying dry, is pulverized by micronizer mill, obtains the Silica Using for Toothpaste friction agent that granularity D50 is 5 ~ 10 μm.
Embodiment 3
(1) raw material prepares
Water glass: modulus is 3.3, SiO
2content is 12wt%, transparency > 200mm;
Dilute acid soln: massfraction is the dilute sulphuric acid of 20%;
Deionized water: specific conductivity is less than 10 μ S/cm;
Sodium salt: sodium sulfate;
Anion surfactant: Sodium Lauryl Sulphate BP/USP.
(2) compressive reaction synthesis
First toward 10m
31m is added in enamel reaction still
3water, open to stir and add sodium sulfate and the 5kg Sodium Lauryl Sulphate BP/USP of 15kg, pass into saturated vapor, the pressure controlled in reactor is 0.3MPa, and when temperature rises to 135 DEG C, and stream adds water glass 6m
3with dilute sulphuric acid 0.810m
3, and flow time controling at 2h, what control water glass and dilute sulphuric acid respectively adds inbound traffics, the pH value of reaction is controlled 9.0, and stream terminates rear continuation dilute sulphuric acid, and to be acidified to pH value be 3.5, ageing 60min, sheet frame material feeding, first with the tap water after filtering, then with deionized water wash to the specific conductivity < 200 μ S/cm of filtrate, slurrying, defibrination, spraying dry, is pulverized by micronizer mill, obtains the Silica Using for Toothpaste friction agent that granularity D50 is 5 ~ 10 μm.
Embodiment 4
(1) raw material prepares
Water glass: modulus is 3.3, SiO
2content is 15wt%, transparency > 200mm;
Dilute acid soln: massfraction is the dilute sulphuric acid of 22%;
Deionized water: specific conductivity is less than 10 μ S/cm;
Sodium salt: sodium sulfate;
Anion surfactant: Sodium Lauryl Sulphate BP/USP.
(2) compressive reaction synthesis
First toward 10m
31m is added in enamel reaction still
3water, open to stir and add sodium sulfate and the 5kg Sodium Lauryl Sulphate BP/USP of 20kg, pass into saturated vapor, the pressure controlled in reactor is 0.2MPa, and when temperature rises to 120 DEG C, and stream adds water glass 5m
3with dilute sulphuric acid 0.768m
3, and flow time controling at 1.5h, what control water glass and dilute sulphuric acid respectively adds inbound traffics, the pH value of reaction is controlled 9.0, and stream terminates rear continuation dilute sulphuric acid, and to be acidified to pH value be 3.5, ageing 30min, sheet frame material feeding, first with the tap water after filtration, then with deionized water wash to filter electrical conductivity of water < 200 μ S/cm, slurrying, defibrination, spraying dry, is pulverized by micronizer mill, obtains the Silica Using for Toothpaste friction agent that granularity D50 is 5 ~ 10 μm.
Embodiment 5
(1) raw material prepares
Water glass: modulus is 3.2, SiO
2content is 18wt%, transparency > 200mm;
Dilute acid soln: massfraction is the dilute sulphuric acid of 25%;
Deionized water: specific conductivity is less than 10 μ S/cm;
Sodium salt: sodium sulfate;
Anion surfactant: Sodium Lauryl Sulphate BP/USP and sodium lauryl sulphate.
(2) compressive reaction synthesis
Compressive reaction synthesizes, first toward 10m
31m is added in enamel reaction still
3water, open to stir and add the sodium sulfate of 20kg, 2kg Sodium Lauryl Sulphate BP/USP and 3kg sodium lauryl sulphate, pass into saturated vapor, the pressure controlled in reactor is 0.15MPa, and when temperature rises to 110 DEG C, and stream adds water glass 5m
3with dilute sulphuric acid 0.810m
3, and flow time controling at 2h, what control water glass and dilute sulphuric acid respectively adds inbound traffics, the pH value of reaction is controlled 9.5, and stream terminates rear continuation dilute sulphuric acid, and to be acidified to pH value be 3.5, ageing 60min, sheet frame material feeding, first with the tap water after filtering, then with deionized water wash to the specific conductivity < 200 μ S/cm of filtrate, slurrying, defibrination, spraying dry, is pulverized by micronizer mill, obtains the Silica Using for Toothpaste friction agent that granularity D50 is 5 ~ 10 μm.
Above-described embodiment 1 ~ 5 is produced the Silica Using for Toothpaste friction agent obtained and carries out Performance Detection, detected result is as shown in table 1 below.
Table 1
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a production method for Silica Using for Toothpaste friction agent, is characterized in that, comprises the following steps:
Step 1, in reaction vessel, add the anion surfactant of the deionized water of 1 ~ 2 parts by volume, the sodium salt of 5 ~ 20 weight parts and 3 ~ 5 weight parts, stir;
Pressure in step 2, adjustment reaction vessel is 0.15 ~ 0.5MPa, temperature is 110 ~ 150 DEG C, the dilute acid soln of the water glass and 0.6 ~ 0.9 parts by volume that then simultaneously add 5 ~ 6 parts by volume in reaction vessel reacts, the speed that adds of adjustment water glass and dilute acid soln makes the solution ph in reaction vessel control 9.0 ~ 9.2, and the reaction times is 90 ~ 120min;
Step 3, reacted after, in reaction vessel, add dilute acid soln, be 3.5 ± 0.2 by the acidify solution in reaction vessel to pH value;
After step 4, acidifying complete, by the solution left standstill ageing 30 ~ 60min in reaction vessel, then successively by press filtration, washing, slurrying, spraying dry, pulverizing, obtain Silica Using for Toothpaste friction agent;
Wherein, described parts by volume: weight part=m
3: kg.
2. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: described deionization electrical conductivity of water is less than 10 μ S/cm.
3. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: described sodium salt is the sodium salt that negatively charged ion is identical with the acid ion of dilute acid soln.
4. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: described anion surfactant be selected from Sodium Lauryl Sulphate BP/USP, sodium lauryl sulphate, alkyl diphenyl ether disulfonate and aliphatic alcohol polyoxyvinethene phosphate one or more.
5. the production method of Silica Using for Toothpaste friction agent according to claim 1, it is characterized in that: in step 2, be 0.15 ~ 0.5MPa by passing into the saturated vapor pressure controlled in reaction vessel in the solution in reaction vessel, temperature is 110 ~ 150 DEG C.
6. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: in step 2, and described water glass and dilute acid soln stream join in reaction vessel and reacts.
7. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: the modulus of described water glass is 2.5 ~ 3.5, SiO
2content is 5 ~ 18wt%, and transparency is greater than 200mm.
8. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: described dilute acid soln is dilute sulphuric acid, dust technology, dilute hydrochloric acid or dilute phosphoric acid, and the massfraction of described dilute acid soln is 15 ~ 30wt%.
9. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: in step 4, and described washing is first with the tap water after filtering, then is less than 200 μ S/cm by deionized water wash to the specific conductivity of filtrate.
10. the production method of Silica Using for Toothpaste friction agent according to claim 1, is characterized in that: in step 4, and the granularity D50 of the Silica Using for Toothpaste friction agent obtained after pulverizing is 5 ~ 10 μm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107140649A (en) * | 2017-06-06 | 2017-09-08 | 福建远翔新材料股份有限公司 | A kind of production method of PE accumulator diaphragms silica |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106009782B (en) * | 2016-05-20 | 2017-07-07 | 广州市飞雪材料科技有限公司 | A kind of preparation method of surface modified silicon dioxide particle |
| CN107792861B (en) * | 2017-11-06 | 2018-08-28 | 广州市飞雪材料科技有限公司 | A kind of low index of refraction high transparency friction type silica and its preparation method and application |
| CN107892306B (en) * | 2017-11-15 | 2019-11-15 | 广州市飞雪材料科技有限公司 | A kind of preparation method of low partial size high water absorption Silica Using for Toothpaste |
| CN109455730B (en) * | 2018-12-07 | 2020-10-13 | 清华大学 | Preparation method of spherical silicon dioxide nanoparticles |
| CN111017939B (en) * | 2020-01-14 | 2023-10-24 | 福建省三明正元化工有限公司 | Preparation method of high-dispersion silicon dioxide |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092721A (en) * | 2010-11-24 | 2011-06-15 | 陈君华 | Method for preparing nanoscale white carbon black through sulfuric acid precipitation method |
| CN102910635A (en) * | 2012-10-17 | 2013-02-06 | 安徽科技学院 | Method for preparing high-quality nano-grade white carbon black by using sulfuric acid precipitation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4883967B2 (en) * | 2005-09-26 | 2012-02-22 | 日揮触媒化成株式会社 | Method for producing porous silica-based particles and porous silica-based particles obtained from the method |
-
2014
- 2014-06-20 CN CN201410279465.5A patent/CN104030303B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092721A (en) * | 2010-11-24 | 2011-06-15 | 陈君华 | Method for preparing nanoscale white carbon black through sulfuric acid precipitation method |
| CN102910635A (en) * | 2012-10-17 | 2013-02-06 | 安徽科技学院 | Method for preparing high-quality nano-grade white carbon black by using sulfuric acid precipitation method |
Non-Patent Citations (1)
| Title |
|---|
| 并流式进料沉淀法二氧化硅的制备;向斌等;《重庆大学学报》;20081130;第31卷(第11期);第1327-1332页 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140649A (en) * | 2017-06-06 | 2017-09-08 | 福建远翔新材料股份有限公司 | A kind of production method of PE accumulator diaphragms silica |
| CN107140649B (en) * | 2017-06-06 | 2019-04-02 | 福建远翔新材料股份有限公司 | A kind of production method of PE accumulator diaphragm silica |
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