CN102311709A - Rubber powder composition used for wallpaper - Google Patents
Rubber powder composition used for wallpaper Download PDFInfo
- Publication number
- CN102311709A CN102311709A CN2010102190534A CN201010219053A CN102311709A CN 102311709 A CN102311709 A CN 102311709A CN 2010102190534 A CN2010102190534 A CN 2010102190534A CN 201010219053 A CN201010219053 A CN 201010219053A CN 102311709 A CN102311709 A CN 102311709A
- Authority
- CN
- China
- Prior art keywords
- rubber powder
- wallpaper
- formaldehyde
- powder composition
- modified molecular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Paper (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a rubber powder composition used for wallpaper, which comprises 85wt%-97wt% of conventional rubber powder and 3wt%-15wt% of modified zeolite, wherein the conventional rubber powder comprises modified starch, fungicide and cellulose ether. Compared with the prior art, the conventional rubber powder in the rubber powder composition used for the wallpaper provided by the invention plays a role of bonding, and the wallpaper is bonded to a wall; the modified zeolite plays a role of adsorption to absorb formaldehyde molecules and other pollutants released by other construction materials in the wallpaper and the surrounding environment, the content of formaldehyde in the use environment of the wallpaper is reduced, and formaldehyde pollution is reduced. With the rubber powder composition, the formaldehyde in the surrounding environment can be removed without the need of regularly or irregularly using other formaldehyde scavengers, and the attractive appearance of the wallpaper can not be affected. In addition, the rubber powder composition used for the wallpaper provided by the invention has a simple preparation process, raw materials are cheap and easy to obtain, and the cost is lower.
Description
Technical field
The present invention relates to building material technical field, relate in particular to a kind of wallpaper and use adhisive powder composition.
Background technology
Wallpaper is claimed wallpaper again, is a kind of speciality paper that is used for decorative wall, has advantages such as attractive in appearance, elegant, convenient, practicality, is widely used in the human settlement.
Wallpaper is the finishing material of comparatively environmental protection; It is residual that but wallpaper still has trace formaldehyde; And other building materials among the human settlement, like various sheet materials etc., owing to having used urea-formaldehyde resin, terpolycyantoamino-formaldehyde resin and resol etc. to continue release formaldehyde in the ambient as the sticker of raw material with formaldehyde; Cause room air pollution, be detrimental to health.
For formaldehyde pollution in the decontamination chamber, prior art discloses multiple formaldehyde scavenger, through brushing, put on the skin and be coated with or method such as spraying is coated in the pollutent surface and reaches the purpose of removing formaldehyde.But, because wallpaper and other building materials continue, release formaldehyde in air lentamente, need regularly or irregularly use formaldehyde scavenger, operate more loaded down with trivial details.And formaldehyde scavenger is generally strong redox agent, directly is applied in wallpaper or other building material surfaces can destroy the attractive in appearance of wallpaper and other building materials.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of wallpaper to use adhisive powder composition, continues to absorb formaldehyde when can wallpaper be pasted on wall, reduces the content of formaldehyde in the wallpaper environment for use.
The invention provides a kind of wallpaper and use adhisive powder composition, comprising:
The conventional rubber powder of 85wt%～97wt% and the modified molecular screen of 3wt%～15wt%;
Said conventional rubber powder comprises treated starch, mould inhibitor and ether of cellulose.
Preferably, said modified molecular screen comprises following component:
The SiO of 65wt%～95wt%
2
The Al of 1wt%～15wt%
2O
3
The MO of 1wt%～10wt%;
The Q of 0.8wt%～15wt%
2O;
The TiO of 0.005wt%～2wt%
2
The Fe of 0.005wt%～2wt%
2O
3
Wherein, the M among the MO is one or both among Ca and the Mg, Q
2Q among the O is one or more among Na, K and the Li.
Preferably, said modified molecular screen is the composite modified molecular sieve with macropore and micropore, and wherein, the average pore diameter of said macropore is 80nm～120nm, and the average pore diameter of said micropore is 0.28nm～0.35nm.
Preferably, the average pore diameter of said micropore is 0.28nm～0.30nm.
Preferably, the average pore diameter of said macropore is 90nm～110nm.
Preferably, the pH value of said modified molecular screen is 6.0～7.5.
Preferably, the granularity of said modified molecular screen is 0.1 μ m～15 μ m.
Preferably, in the said conventional rubber powder, the mass ratio of treated starch, mould inhibitor and ether of cellulose is 60～90: 5～10: 10～20.
Preferably, said ether of cellulose is a hydroxypropyl methyl cellulose ether.
Compared with prior art, the invention provides a kind of wallpaper and use rubber powder, comprise the conventional rubber powder of forming by treated starch, mould inhibitor and ether of cellulose of 85wt%～97wt% and the modified molecular screen of 3wt%～15wt%.Wherein, conventional rubber powder performance cohesive action is pasted on wallpaper on the wall; Modified molecular screen performance adsorption absorbs the pollutents such as formaldehyde molecule that other material of construction discharge in wallpaper and the surrounding environment, reduces the content of formaldehyde in the wallpaper environment for use, alleviates formaldehyde and pollutes.The present invention need not regularly or irregularly to use other formaldehyde scavengers can remove the formaldehyde in the surrounding environment, also can not influence the attractive in appearance of wallpaper.In addition, wallpaper provided by the invention is simple with rubber powder preparation technology, and low in raw material cost is easy to get, and cost is lower.
Embodiment
The invention provides a kind of wallpaper and use adhisive powder composition, comprising:
The conventional rubber powder of 85wt%～97wt% and the modified molecular screen of 3wt%～15wt%;
Said conventional rubber powder comprises treated starch, mould inhibitor and ether of cellulose.
In the adhisive powder composition provided by the invention, the effect of conventional rubber powder performance sticker.According to the present invention, said conventional rubber powder comprises treated starch, mould inhibitor and ether of cellulose.
In said conventional rubber powder, said treated starch plays cohesive action, and wallpaper is pasted on the wall.According to the present invention, said treated starch is preferably modification potato starch well known to those skilled in the art, and object lesson can perhaps be the dialdehyde potato starch for the potato starch through oxidation.
The effect of said mould inhibitor is to prevent that rubber powder from going mouldy, and the present invention does not have particular restriction to mould inhibitor, is mould inhibitor well known to those skilled in the art.
Said ether of cellulose has water conservation, thickening, improves effects such as workability, can improve the performance of said adhisive powder composition.According to the present invention, said ether of cellulose is preferably hydroxypropyl methyl cellulose ether.
In order to make adhisive powder composition provided by the invention have better properties, in said conventional rubber powder, the mass ratio of said treated starch, mould inhibitor and ether of cellulose is preferably 60～90: 5～10: 10～20, more preferably 65～90: 5～8: 10～20.
Wallpaper provided by the invention is with comprising modified molecular screen in the adhisive powder composition, the main effect of said modified molecular screen is the absorbing formaldehyde molecule.Said modified molecular screen has the cavity and the pore canal system of molecular dimension size; Said cavity links to each other through said duct; Said duct can with than the little molecular adsorption of channel diameter in the duct and then get into cavity, thereby the effect of playing the screening molecule, removing formaldehyde.
According to the present invention, said modified molecular screen preferably includes following component:
The SiO of 65wt%～95wt%
2
The Al of 1wt%～15wt%
2O
3
The MO of 1wt%～10wt%;
The Q of 0.8wt%～15wt%
2O;
The TiO of 0.005wt%～2wt%
2
The Fe of 0.005wt%～2wt%
2O
3
Wherein, the M among the MO is one or both among Ca and the Mg, Q
2Q among the O is one or more among Na, K and the Li.
Said modified molecular screen more preferably comprises following component:
The SiO of 65wt%～90wt%
2
The Al of 3wt%～15wt%
2O
3
The MO of 2wt%～8wt%;
The Q of 0.8wt%～6wt%
2O;
The TiO of 0.005wt%～2wt%
2
The Fe of 0.005wt%～2wt%
2O
3
In order to make the better absorbing formaldehyde molecule of said adhisive powder composition, said modified molecular screen is preferably the composite modified molecular sieve with macropore and micropore, and wherein, the average pore diameter of said macropore is preferably 80nm～120nm, more preferably 90nm～110nm; The average pore diameter of said micropore is 0.28nm～0.35nm, more preferably 0.28nm～0.3nm.
The adsorption of the modified molecular screen PARA FORMALDEHYDE PRILLS(91,95) molecule not only channel diameter with modified molecular screen is relevant, and is also relevant with the acidity of modified molecular screen.According to the present invention, the pH value of said modified molecular screen is preferably 6.0～7.5, and more preferably 6.8～7.4.
Use in order to make said adhisive powder composition be more suitable for wallpaper, the granularity of said modified molecular screen is preferably 0.1 μ m～15 μ m, more preferably 0.1 μ m～10 μ m.
According to the present invention, the content of said modified molecular screen in said adhisive powder composition is 5wt%～15wt%, is preferably 5wt%～10wt%.The content of said modified molecular screen in said adhisive powder composition is high more, and the effect of absorbing formaldehyde is good more, but during the modified molecular screen too high levels, can reduce the viscosifying power of adhisive powder composition, reduces the quality of sticking wallpaper.
The present invention does not have particular restriction to the source of said modified molecular screen, can be for buying from market, also can be for according to method preparation well known to those skilled in the art, and said preparation method is preferably template control method or seed mediated growth method.
With modified molecular screen, comprise treated starch, mould inhibitor and cellulosic conventional rubber powder and mix according to method well known to those skilled in the art, can obtain wallpaper and use adhisive powder composition.Said blending means can be stirring, also can be in high-speed mixer, mixing.
Said adhisive powder composition is dissolved in water, promptly can be used for sticking wallpaper after fully stirring, mixing.
Compared with prior art, the invention provides a kind of wallpaper and use rubber powder, comprise the conventional rubber powder of forming by treated starch, mould inhibitor and ether of cellulose of 85wt%～97wt% and the modified molecular screen of 3wt%～15wt%.Wherein, conventional rubber powder performance cohesive action is pasted on wallpaper on the wall; Modified molecular screen performance adsorption absorbs the pollutents such as formaldehyde molecule that other material of construction discharge in wallpaper and the surrounding environment, reduces the content of formaldehyde in the wallpaper environment for use, alleviates formaldehyde and pollutes.The present invention need not regularly or irregularly to use other formaldehyde scavengers can remove the formaldehyde in the surrounding environment, also can not influence the attractive in appearance of wallpaper.In addition, wallpaper provided by the invention is simple with rubber powder preparation technology, and low in raw material cost is easy to get, and cost is lower.
In order further to understand the present invention, wallpaper provided by the invention is described in detail with adhisive powder composition below in conjunction with embodiment.
Embodiment 1
To contain 4g cetyl trimethylammonium bromide solution mixes with the water glass that contains 4.06g silicon-dioxide, 0.50g sodium metaaluminate, 0.051g ferrous acid four butyl esters, 0.14g lime carbonate, 0.48g magnesium nitrate, 0.0032g titanium isopropylate and 0.24g Quilonum Retard; Stir and aging 5h at 20 ℃, obtain mixed solution.Said mixed solution is transferred in the reaction kettle, is crystallization 5 days under 10 the condition at 120 ℃, pH value, obtains solid sediment.This throw out is filtered, washs, dries back roasting 5h, obtain intermediate product;
Said intermediate product is dispersed in the NaCl aqueous solution of 0.5mol/L, obtains uniform dispersion system after the ultrasonication; With through-hole aperture is that the porous carbon of 90nm～110nm is immersed in 3h in the said dispersion system, obtains throw out, with this throw out filter, washing, oven dry back roasting 5h, obtain modified molecular screen.
Said modified molecular screen is carried out electron-microscope scanning, and it is that 100nm and mean pore size are the two-stage pore passage structure of 0.29nm that visible its has mean pore size;
Said modified molecular screen is carried out the test of pH value, and its pH value is 6.9.
Said modified molecular screen is crossed 6 μ m screen clothes, and the modified molecular screen powder that obtains granularity and be 6 μ m is subsequent use.
Embodiment 2
With the modified molecular screen powder of 5kg embodiment 1 preparation, the auspicious precious enhancement type rubber powder thorough mixing of the solid special production of 95kg, obtain the 100kg rubber powder, wherein the content of modified molecular screen is 5%.
It is soluble in water to get the 5kg rubber powder, stirs, and normal temperature was stored 30 days down, observes the storage stability of glue, and the result sees table 1, the storage stability test-results of the rubber powder that table 1 provides for the embodiment of the invention 2.
The storage stability test-results of the rubber powder that table 1 embodiment of the invention 2 provides
TP according to building material industry standard JC/T 1074-2008 provides is removed the formaldehyde measure of merit to rubber powder, and the result is referring to table 2, the rubber powder that table 2 provides for the embodiment of the invention 2 remove the formolite test result.
The rubber powder that table 2 embodiment of the invention 2 provides remove the formolite test result
Above-mentioned test-results shows that the rubber powder stability that the embodiment of the invention provides is better, and it is higher to remove formaldehyde efficient, can significantly reduce formaldehyde content.
Embodiment 3
The auspicious precious enhancement type rubber powder thorough mixing that the solid special company of modified molecular screen powder, 92kg that 8kg embodiment 1 is prepared produces obtains the 100kg rubber powder, and wherein the content of modified molecular screen is 8%.
It is soluble in water to get the 5kg rubber powder, stirs, and normal temperature was stored 30 days down, observes the storage stability of glue, and the result sees table 3, the storage stability test-results of the rubber powder that table 3 provides for the embodiment of the invention 3.
The storage stability test-results of the rubber powder that table 3 embodiment of the invention 3 provides
TP according to building material industry standard JC/T 1074-2008 provides is removed the formaldehyde measure of merit to rubber powder, and the result is referring to table 4, the rubber powder that table 4 provides for the embodiment of the invention 3 remove the formolite test result.
The rubber powder that table 4 embodiment of the invention 3 provides remove the formolite test result
Above-mentioned test-results shows that the rubber powder stability that the embodiment of the invention provides is better, and it is higher to remove formaldehyde efficient, can significantly reduce formaldehyde content.
Embodiment 4
The auspicious precious enhancement type rubber powder thorough mixing that the solid special company of modified molecular screen powder, 90kg that 10kg embodiment 1 is prepared produces obtains the 100kg rubber powder, and wherein the content of modified molecular screen is 10%.
It is soluble in water to get the 5kg rubber powder, stirs, and normal temperature was stored 30 days down, observes the storage stability of glue, and the result sees table 5, the storage stability test-results of the rubber powder that table 5 provides for the embodiment of the invention 4.
The storage stability test-results of the rubber powder that table 5 embodiment of the invention 4 provides
TP according to building material industry standard JC/T 1074-2008 provides is removed the formaldehyde measure of merit to rubber powder, and the result is referring to table 6, the rubber powder that table 6 provides for the embodiment of the invention 4 remove the formolite test result.
The rubber powder that table 6 embodiment of the invention 4 provides remove the formolite test result
Above-mentioned test-results shows that the rubber powder stability that the embodiment of the invention provides is better, and it is higher to remove formaldehyde efficient, can significantly reduce formaldehyde content.
Embodiment 5
With 5kg commercially available, granularity is the auspicious precious enhancement type rubber powder thorough mixing that the solid special company of HZSM-5 modified molecular screen and 95kg of 8 μ m produces, and obtains the 100kg rubber powder, wherein the content of modified molecular screen is 5%.
It is soluble in water to get the 5kg rubber powder, stirs, and normal temperature was stored 30 days down, observes the storage stability of glue, and the result sees table 7, the storage stability test-results of the rubber powder that table 7 provides for the embodiment of the invention 5.
The storage stability test-results of the rubber powder that table 7 embodiment of the invention 5 provides
TP according to building material industry standard JC/T 1074-2008 provides is removed the formaldehyde measure of merit to rubber powder, and the result is referring to table 8, the rubber powder that table 8 provides for the embodiment of the invention 5 remove the formolite test result.
The rubber powder that table 8 embodiment of the invention 5 provides remove the formolite test result
Above-mentioned test-results shows that the rubber powder stability that the embodiment of the invention provides is better, and it is higher to remove formaldehyde efficient, can significantly reduce formaldehyde content.
Comparative example 1
The TP that provides according to building material industry standard JC/T 1074-2008 is removed the formaldehyde measure of merit to the auspicious precious enhancement type rubber powder that solid special company produces, and the result is referring to table 9, the rubber powder that table 9 provides for comparative example 1 of the present invention except that the formolite test result.
The rubber powder that table 9 comparative example 1 of the present invention provides remove the formolite test result
Above-mentioned test-results shows, in conventional rubber powder, adding the rubber powder that obtains behind the modified molecular screen can absorbing formaldehyde, significantly reduces the content of formaldehyde in the environment.
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. a wallpaper is used adhisive powder composition, comprising:
The conventional rubber powder of 85wt%～97wt% and the modified molecular screen of 3wt%～15wt%;
Said conventional rubber powder comprises treated starch, mould inhibitor and ether of cellulose.
2. adhisive powder composition according to claim 1 is characterized in that, said modified molecular screen comprises following component:
The SiO of 65wt%～95wt%
2
The Al of 1wt%～15wt%
2O
3
The MO of 1wt%～10wt%;
The Q of 0.8wt%～15wt%
2O;
The TiO of 0.005wt%～2wt%
2
The Fe of 0.005wt%～2wt%
2O
3
Wherein, the M among the MO is one or both among Ca and the Mg, Q
2Q among the O is one or more among Na, K and the Li.
3. adhisive powder composition according to claim 1; It is characterized in that said modified molecular screen is the composite modified molecular sieve with macropore and micropore, wherein; The average pore diameter of said macropore is 80nm～120nm, and the average pore diameter of said micropore is 0.28nm～0.35nm.
4. adhisive powder composition according to claim 3 is characterized in that, the average pore diameter of said micropore is 0.28nm～0.30nm.
5. adhisive powder composition according to claim 3 is characterized in that, the average pore diameter of said macropore is 90nm～110nm.
6. adhisive powder composition according to claim 1 is characterized in that, the pH value of said modified molecular screen is 6.0～7.5.
7. adhisive powder composition according to claim 1 is characterized in that, the granularity of said modified molecular screen is 0.1 μ m～15 μ m.
8. adhisive powder composition according to claim 1 is characterized in that, in the said conventional rubber powder, the mass ratio of treated starch, mould inhibitor and ether of cellulose is 60～90: 5～10: 10～20.
9. adhisive powder composition according to claim 1 is characterized in that, said ether of cellulose is a hydroxypropyl methyl cellulose ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010219053.4A CN102311709B (en) | 2010-07-07 | 2010-07-07 | A kind of rubber powder composition used for wallpaper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010219053.4A CN102311709B (en) | 2010-07-07 | 2010-07-07 | A kind of rubber powder composition used for wallpaper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102311709A true CN102311709A (en) | 2012-01-11 |
| CN102311709B CN102311709B (en) | 2015-11-25 |
Family
ID=45425289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010219053.4A Active CN102311709B (en) | 2010-07-07 | 2010-07-07 | A kind of rubber powder composition used for wallpaper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102311709B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558185A (en) * | 2017-08-30 | 2018-01-09 | 江苏龙商环保科技有限公司 | The preparation method and preparation facilities of a kind of composite textile materials |
| CN107936869A (en) * | 2017-12-04 | 2018-04-20 | 徐州得铸生物科技有限公司 | A kind of preparation method of composite type modified starch adhesive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587333A (en) * | 2004-08-04 | 2005-03-02 | 莫万全 | High performance environmental protection processed adhesive powder and its preparing method |
| CN1696401A (en) * | 2005-03-31 | 2005-11-16 | 玉溪红塔烟草(集团)有限责任公司 | Shaped paper with activated adsorption layer in use for filter plug of cigarette |
| CN101475790A (en) * | 2008-01-04 | 2009-07-08 | 杨光 | Novel timber adhesive and preparation thereof |
-
2010
- 2010-07-07 CN CN201010219053.4A patent/CN102311709B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587333A (en) * | 2004-08-04 | 2005-03-02 | 莫万全 | High performance environmental protection processed adhesive powder and its preparing method |
| CN1696401A (en) * | 2005-03-31 | 2005-11-16 | 玉溪红塔烟草(集团)有限责任公司 | Shaped paper with activated adsorption layer in use for filter plug of cigarette |
| CN101475790A (en) * | 2008-01-04 | 2009-07-08 | 杨光 | Novel timber adhesive and preparation thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558185A (en) * | 2017-08-30 | 2018-01-09 | 江苏龙商环保科技有限公司 | The preparation method and preparation facilities of a kind of composite textile materials |
| CN107936869A (en) * | 2017-12-04 | 2018-04-20 | 徐州得铸生物科技有限公司 | A kind of preparation method of composite type modified starch adhesive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102311709B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101540754B1 (en) | Natural Finishing Composition and Production Method Thereof | |
| CN102167936B (en) | Marine organism shell powder paint | |
| CN110183974A (en) | The anti-glutinous rice glue and preparation method thereof that warps of one kind | |
| CN103304185A (en) | Real mineral varnish | |
| CN1124161C (en) | Functional forming materialand its making method | |
| CN1654563A (en) | Indoor environmental protection decorative coating and its production method | |
| CN107189478A (en) | A kind of straw refuse regenerated environment protecting abrasion resistant fire blocking sheet material and preparation method thereof | |
| CN102828447B (en) | Negative-ion anti-formaldehyde ecological wallpaper | |
| CN101298520B (en) | Urea-formaldehyde resin additive, preparation thereof and urea-formaldehyde resin adhesive | |
| CN101244579A (en) | Flakeboard and method of manufacturing the same | |
| CN102311709B (en) | A kind of rubber powder composition used for wallpaper | |
| CN106587813A (en) | Multifunctional wall covering material and preparation method thereof | |
| CN108841114A (en) | A kind of novel environment friendly Wood-plastic material and preparation method thereof | |
| KR20080100012A (en) | The composition of paint and the manufacturing method thereof | |
| CN105754399B (en) | Mildew-proof putty powder and preparation method thereof | |
| CN103435848B (en) | Preparation method of medical cellulose sponge | |
| US7776179B2 (en) | Fire-retardant, method for manufacturing fire-retardant cellulose-based | |
| CN114318948B (en) | Antibacterial impregnated paper and preparation method and application thereof | |
| CN109972385B (en) | Surface treatment method for bamboo and wood fibers | |
| CN107177305A (en) | A kind of fire resistant coating | |
| CN101181793B (en) | Adding material for medium density fiberboard, medium density fiberboard and preparation method thereof | |
| KR100879750B1 (en) | The natural water-soluble painting composite and method of manufacturing the same | |
| CN107488011A (en) | A kind of dry-type scrubbing resistance shell powder interior wall paint and preparation method thereof | |
| CN104030612B (en) | The diatom ooze building and ornament materials of high bond strength and biocidal property | |
| CN111607270A (en) | Silver ion traditional Chinese medicine antiviral liquid diatom ooze and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |