CN107827138A - A kind of preparation method of superfine active calcium carbonate - Google Patents
A kind of preparation method of superfine active calcium carbonate Download PDFInfo
- Publication number
- CN107827138A CN107827138A CN201711297205.0A CN201711297205A CN107827138A CN 107827138 A CN107827138 A CN 107827138A CN 201711297205 A CN201711297205 A CN 201711297205A CN 107827138 A CN107827138 A CN 107827138A
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- slurries
- preparation
- carbon dioxide
- superfine active
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of preparation method of superfine active calcium carbonate, it is related to calcium carbonate preparing technical field.Including quick lime is made into calcium hydroxide slurry of the concentration 7% 13%；Calcium hydroxide slurry is put into reaction vessel, liquid temperature degree is reduced to 20 DEG C 35 DEG C, carbon dioxide is passed through and is carbonized, crystal structure adjusting agent is added after carbonization 5min 10min and continues to react 20min 30min；Add dispersant and continue the 15min 25min completion carbonisations that are carbonized；Slurries are warming up to 65 DEG C 80 DEG C, add covering, the cladding time is 1h 2h；Superfine active calcium carbonate will be obtained after completely reacted dewatering slurries, drying, crushing.The present invention is controlled by staged carbon dioxide flow rate, makes slurries carbonisation thorough, and improves carbonization efficiency, is accelerated to prepare speed, is reduced production cost, improves final product quality；By mixed type crystal formation regulator, mixed type dispersant and mixed type covering, control superfine calcium carbonate particle pattern, calcium carbonate particle are scattered thorough, avoid product from agglomeration occur.
Description
Technical field
The invention belongs to calcium carbonate preparing technical field, more particularly to a kind of preparation side of superfine active calcium carbonate
Method.
Background technology
It is good with resin affinity in plastics that nm-class active calcium carbonate is used for, and can be effectively increased or adjust material stiffness, toughness,
And bending strength etc., and the rheological property of plastic processing system can be improved, plasticization temperature is reduced, it is stable to improve product size
Property, heat resistance and surface smooth finish；In the rubbery systems such as natural rubber, butadiene rubber, butadiene-styrene rubber, easily it is kneaded, disperses
Uniformly, and colloid can be made soft, moreover it is possible to improve and extrude processing characteristics and model flow.Having rubber, surface is smooth,
The features such as elongation is big, and tensile strength is high, and permanent deformation is small, and resistance to bend(ing) can be good, and tear-resistant intensity is high.
Because nano activated calcium carbonate has, high gloss, wear rate are low, surface is modified and oleophobic property, can fill polychlorostyrene
In the polymer such as ethene, polypropylene and phenoplasts, it is widely used in polychloroethylene section bar, tubing, electric wire, cable again now
The production of crust micelle, film (calendered film), footwear industry manufacture etc..The plastics such as polypropylene, polyethylene, poly- carbon are suitable also for change
Property.It is good with resin compatible due to active nano-calcium carbonate surface oleophilic drainage, it can effectively improve or adjust the firm, tough of product
Property, finish and bending strength；Improve processing characteristics, improve the rheological property, dimensional stability, heat-resistant stability of product
Have the function that to fill and strengthen, toughness reinforcing, the expensive inserts in part and auxiliary agent can be substituted, reduce the dosage of resin, from
And production cost is reduced, improve the market competitiveness.
Loading pigment can be used as in coatings industry, has the advantages that fine and smooth, uniform, whiteness is high, good in optical property, receives
Rice activated Calcium carbonate has space steric effect, in painting, the larger lithopone of formula density can be made to suspend, play anti-settling and make
With.After painting, the increase of paint film whiteness, gloss is high, and covering power does not decline, and this characteristic makes it largely be pushed away in coatings industry
Wide application.
Available for the raw material of painting processing paper, particularly for advanced art paper.Because its dispersive property is good, viscosity is low,
The whiteness and opacity of paper can be effectively improved, improves smoothness, the pliability of paper, improves the absorbent properties of ink, is improved
Retention rate.
As filler, the higher colloid calcium of alternative price, glossiness and the brightness of ink can be improved.Nano active carbonic acid
Calcium is additionally operable to feedstuff industry, can be used as calcium tonic, increase the calcium content of feed, used in cosmetics, alternative titanium dioxide.
The content of the invention
It is an object of the invention to provide a kind of preparation method of superfine active calcium carbonate, pass through staged carbon dioxide
Flow control, make slurries carbonisation thorough, and improve carbonization efficiency, accelerate to prepare speed, reduce production cost, improve
Final product quality；By mixed type crystal formation regulator, mixed type dispersant and mixed type covering, superfine calcium carbonate particle is controlled
Pattern, calcium carbonate particle are scattered thorough, avoid product from agglomeration occur.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention is a kind of preparation method of superfine active calcium carbonate, is comprised the following steps：
The first step：Quick lime is put into digestion vessel, hot water is added and fully digests, hydrogen-oxygen of the concentration in 7%-13% is made
Change calcium slurries；
Second step：Above-mentioned calcium hydroxide slurry is put into reaction vessel, calcium hydroxide slurry temperature is reduced to 20 DEG C -35
DEG C, toward reaction vessel in be passed through carbon dioxide and be carbonized, adding crystal structure adjusting agent after the 5min-10min that is carbonized continues to react
20min-30min；Add dispersant and continue the 15min-25min completion carbonisations that are carbonized；
3rd step：Slurries are warming up to 65 DEG C -80 DEG C, covering is added and carries out calcium hydroxide slurry progress surface active bag
Cover, the cladding time is 1h-2h；
4th step：Superfine active calcium carbonate will be obtained after completely reacted dewatering slurries, drying, crushing.
Further, the carbon dioxide flow rate is 1L/min-5L/min；The carbon dioxide flow rate becomes from high to low
Change；When just starting carbonization, carbon dioxide flow rate 5L/min, carbon dioxide flow rate is down to 3L/min after adding crystal structure adjusting agent；
Carbon dioxide flow rate is down to 1L/min after dispersant is added.
Further, the crystal structure adjusting agent be citrate and dextrose mixture, the citrate and grape
The ratio of sugar is 3:2；The crystal structure adjusting agent addition is the 0.1%-2% of slurry weight.
Further, the dispersant is the mixture of neopelex and sulfate, the detergent alkylate
The ratio of sodium sulfonate and sulfate is 1：2；The dispersant addition is the 0.5%-2.5% of weight of calcium carbonate in slurries.
Further, it is characterised in that the covering is the mixture of stearic acid and fatty acid sorbitan, the tristearin
The ratio of acid and fatty acid sorbitan is 5:1；The addition of the covering is the 1%-3% of weight of calcium carbonate in slurries.
The invention has the advantages that：
The present invention is controlled by staged carbon dioxide flow rate, makes slurries carbonisation thorough, and improves carbonization efficiency,
Accelerate to prepare speed, reduce production cost, improve final product quality；By mixed type crystal formation regulator, mixed type dispersant and
Mixed type covering, control superfine calcium carbonate particle pattern, calcium carbonate particle are scattered thorough, avoid product from reunion occur existing
As.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
All other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Embodiment one
A kind of preparation method of superfine active calcium carbonate, comprises the following steps：
The first step：Quick lime is put into digestion vessel, hot water is added and fully digests, calcium hydroxide of the concentration 10% is made
Slurries；
Second step：Calcium hydroxide slurry is put into reaction vessel, calcium hydroxide slurry temperature is reduced to 20 DEG C, toward reaction
Carbon dioxide is passed through in container to be carbonized, and crystal structure adjusting agent is added after the 5min that is carbonized and continues to react 20min；Add dispersant after
Continuous carbonization 20min completes carbonisation；
3rd step：Slurries are warming up to 70 DEG C, covering is added and carries out calcium hydroxide slurry progress surface active cladding, bag
It is 1.5h to cover the time；
4th step：Superfine active calcium carbonate will be obtained after completely reacted dewatering slurries, drying, crushing.
Further, carbon dioxide flow rate 1L/min-5L/min；Carbon dioxide flow rate changes from high to low；Just start
During carbonization, carbon dioxide flow rate 5L/min, carbon dioxide flow rate is down to 3L/min after adding crystal structure adjusting agent；It is scattered when adding
Carbon dioxide flow rate is down to 1L/min after agent.
Further, crystal structure adjusting agent be citrate and dextrose mixture, the ratio of citrate and dextrose
For 3:2；Crystal structure adjusting agent addition is the 0.5% of slurry weight.
Further, dispersant is the mixture of neopelex and sulfate, neopelex with
The ratio of sulfate is 1：2；Dispersant addition is 1% of weight of calcium carbonate in slurries.
Further, it is characterised in that covering is the mixture of stearic acid and fatty acid sorbitan, stearic acid and fat
The smooth ratio of sour sorb is 5:1；The addition of covering is 1% of weight of calcium carbonate in slurries.
Embodiment two
A kind of preparation method of superfine active calcium carbonate, comprises the following steps：
The first step：Quick lime is put into digestion vessel, hot water is added and fully digests, calcium hydroxide of the concentration 10% is made
Slurries；
Second step：Slurries are put into reaction vessel, slurry temperature is reduced to 20 DEG C -35 DEG C, toward reaction vessel in be passed through
Carbon dioxide is carbonized, and crystal structure adjusting agent is added after the 10min that is carbonized and continues to react 25min；Dispersant is added to continue to be carbonized
25min completes carbonisation；
3rd step：Slurries are warming up to 75 DEG C, covering is added and carries out calcium hydroxide slurry progress surface active cladding, bag
It is 1.5h to cover the time；
4th step：Superfine active calcium carbonate will be obtained after completely reacted dewatering slurries, drying, crushing.
Further, carbon dioxide flow rate 1L/min-5L/min；Carbon dioxide flow rate changes from high to low；Just start
During carbonization, carbon dioxide flow rate 5L/min, carbon dioxide flow rate is down to 3L/min after adding crystal structure adjusting agent；It is scattered when adding
Carbon dioxide flow rate is down to 1L/min after agent.
Further, crystal structure adjusting agent be citrate and dextrose mixture, the ratio of citrate and dextrose
For 3:2；Crystal structure adjusting agent addition is the 1% of slurry weight.
Further, dispersant is the mixture of neopelex and sulfate, neopelex with
The ratio of sulfate is 1：2；Dispersant addition is 1.5% of weight of calcium carbonate in slurries.
Further, it is characterised in that covering is the mixture of stearic acid and fatty acid sorbitan, stearic acid and fat
The smooth ratio of sour sorb is 5:1；The addition of covering is 2% of weight of calcium carbonate in slurries.
Embodiment three
A kind of preparation method of superfine active calcium carbonate, comprises the following steps：
The first step：Quick lime is put into digestion vessel, hot water is added and fully digests, calcium hydroxide of the concentration 10% is made
Slurries；
Second step：Calcium hydroxide slurry is put into reaction vessel, calcium hydroxide slurry temperature is reduced to 35 DEG C, toward reaction
Carbon dioxide is passed through in container to be carbonized, and crystal structure adjusting agent is added after the 10min that is carbonized and continues to react 30min；Add dispersant
Continue the 25min completion carbonisations that are carbonized；
3rd step：Slurries are warming up to 80 DEG C, covering is added and carries out calcium hydroxide slurry progress surface active cladding, bag
It is 1.5h to cover the time；
4th step：Superfine active calcium carbonate will be obtained after completely reacted dewatering slurries, drying, crushing.
Further, carbon dioxide flow rate 1L/min-5L/min；Carbon dioxide flow rate changes from high to low；Just start
During carbonization, carbon dioxide flow rate 5L/min, carbon dioxide flow rate is down to 3L/min after adding crystal structure adjusting agent；It is scattered when adding
Carbon dioxide flow rate is down to 1L/min after agent.
Further, crystal structure adjusting agent be citrate and dextrose mixture, the ratio of citrate and dextrose
For 3:2；Crystal structure adjusting agent addition is the 2% of slurry weight.
Further, dispersant is the mixture of neopelex and sulfate, neopelex with
The ratio of sulfate is 1：2；Dispersant addition is 2% of weight of calcium carbonate in slurries.
Further, it is characterised in that covering is the mixture of stearic acid and fatty acid sorbitan, stearic acid and fat
The smooth ratio of sour sorb is 5:1；The addition of covering is 3% of weight of calcium carbonate in slurries.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation of the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example describe
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (5)
1. a kind of preparation method of superfine active calcium carbonate, it is characterised in that comprise the following steps：
The first step：Quick lime is put into digestion vessel, hot water is added and fully digests, calcium hydroxide of the concentration in 7%-13% is made
Slurries；
Second step：Above-mentioned calcium hydroxide slurry is put into reaction vessel, calcium hydroxide slurry temperature is reduced to 20 DEG C -35 DEG C,
Carbon dioxide is passed through in toward reaction vessel to be carbonized, and crystal structure adjusting agent is added after the 5min-10min that is carbonized and continues to react 20min-
30min；Add dispersant and continue the 15min-25min completion carbonisations that are carbonized；
3rd step：Slurries are warming up to 65 DEG C -80 DEG C, covering is added and carries out calcium hydroxide slurry progress surface active cladding,
The cladding time is 1h-2h；
4th step：Superfine active calcium carbonate will be obtained after completely reacted dewatering slurries, drying, crushing.
A kind of 2. preparation method of superfine active calcium carbonate according to claim 1, it is characterised in that the titanium dioxide
Carbon flow speed is 1L/min-5L/min；The carbon dioxide flow rate changes from high to low.
3. the preparation method of a kind of superfine active calcium carbonate according to claim 1, it is characterised in that the crystal formation is adjusted
The mixture that agent is citrate and dextrose is saved, the ratio of the citrate and dextrose is 3:2；The crystal structure adjusting agent
Addition is the 0.1%-2% of slurry weight.
A kind of 4. preparation method of superfine active calcium carbonate according to claim 1, it is characterised in that the dispersant
For neopelex and the mixture of sulfate, the ratio of the neopelex and sulfate is 1：2；Institute
State 0.5%-2.5% of the dispersant addition for weight of calcium carbonate in slurries.
A kind of 5. preparation method of superfine active calcium carbonate according to claim 1, it is characterised in that the covering
For stearic acid and the mixture of fatty acid sorbitan, the ratio of the stearic acid and fatty acid sorbitan is 5:1；The covering
Addition be slurries in weight of calcium carbonate 1%-3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711297205.0A CN107827138A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of superfine active calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711297205.0A CN107827138A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of superfine active calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107827138A true CN107827138A (en) | 2018-03-23 |
Family
ID=61642101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711297205.0A Pending CN107827138A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of superfine active calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107827138A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111440461A (en) * | 2020-04-30 | 2020-07-24 | 广西夏阳环保科技有限公司 | Preparation method of calcium carbonate special for plastics and coatings |
| CN111450798A (en) * | 2020-04-13 | 2020-07-28 | 内蒙古牧星人新材料科技有限公司 | High-concentration negative oxygen ion powder and preparation method thereof |
| CN112028100A (en) * | 2020-06-18 | 2020-12-04 | 芜湖卓越纳米新材料股份有限公司 | Industrial preparation method of high-dispersity nano calcium carbonate for printing ink |
| CN112480713A (en) * | 2020-11-27 | 2021-03-12 | 安徽省宣城市华纳新材料科技有限公司 | Preparation method of nano calcium carbonate for filling polyethylene transparent film |
| CN113121932A (en) * | 2021-03-25 | 2021-07-16 | 茂名联塑建材有限公司 | PVC-U drainage pipe fitting and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916084A (en) * | 2005-12-29 | 2007-02-21 | 上海耀华纳米科技有限公司 | Method for preparing Nano calcium carbonate dedicated to printing ink |
| CN103693669A (en) * | 2013-12-03 | 2014-04-02 | 恩平市嘉维化工实业有限公司 | Method for preparing nano calcium carbonate special for rolling film |
| CN105836781A (en) * | 2016-06-02 | 2016-08-10 | 湖南化工职业技术学院 | Carbonization and activation integration device and method for producing nano calcium carbonate |
-
2017
- 2017-12-08 CN CN201711297205.0A patent/CN107827138A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916084A (en) * | 2005-12-29 | 2007-02-21 | 上海耀华纳米科技有限公司 | Method for preparing Nano calcium carbonate dedicated to printing ink |
| CN103693669A (en) * | 2013-12-03 | 2014-04-02 | 恩平市嘉维化工实业有限公司 | Method for preparing nano calcium carbonate special for rolling film |
| CN105836781A (en) * | 2016-06-02 | 2016-08-10 | 湖南化工职业技术学院 | Carbonization and activation integration device and method for producing nano calcium carbonate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450798A (en) * | 2020-04-13 | 2020-07-28 | 内蒙古牧星人新材料科技有限公司 | High-concentration negative oxygen ion powder and preparation method thereof |
| CN111440461A (en) * | 2020-04-30 | 2020-07-24 | 广西夏阳环保科技有限公司 | Preparation method of calcium carbonate special for plastics and coatings |
| CN112028100A (en) * | 2020-06-18 | 2020-12-04 | 芜湖卓越纳米新材料股份有限公司 | Industrial preparation method of high-dispersity nano calcium carbonate for printing ink |
| CN112480713A (en) * | 2020-11-27 | 2021-03-12 | 安徽省宣城市华纳新材料科技有限公司 | Preparation method of nano calcium carbonate for filling polyethylene transparent film |
| CN113121932A (en) * | 2021-03-25 | 2021-07-16 | 茂名联塑建材有限公司 | PVC-U drainage pipe fitting and preparation method and application thereof |
| CN113121932B (en) * | 2021-03-25 | 2021-10-15 | 茂名联塑建材有限公司 | PVC-U drainage pipe fitting and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107827138A (en) | A kind of preparation method of superfine active calcium carbonate | |
| CN104087029B (en) | A kind of preparation method of silicone sealant special active calcium carbonate | |
| CN105255218B (en) | The Nano calcium carbonate dedicated surface treatment method of polyurethane sealant | |
| CN108821322B (en) | Preparation method of microsphere precipitated calcium carbonate with layered structure | |
| CN1444543A (en) | Titanium dioxide-calcium carbonate composite particles | |
| CN108975372A (en) | A kind of preparation method of spindle winnofil | |
| CN110372024A (en) | A kind of preparation method of plastics submicron order rice particle shape calcium carbonate | |
| CN106752106B (en) | Anti-aging functional filler nano-calcium carbonate of bright white uvioresistant and its preparation method and application | |
| CN112960685A (en) | Preparation method of nano calcium carbonate for filling hard PVC (polyvinyl chloride) | |
| JP2001510251A (en) | Paper products containing filling materials | |
| CN108069452A (en) | A kind of preparation method of chain calcite type calcium carbonate | |
| CN110527402A (en) | A kind of waterborne epoxy floor paint and preparation method thereof | |
| CN104945958A (en) | Composite titanium dioxide and preparation method thereof | |
| CN106673043B (en) | Polyethersulfone resin filling anti-oxidant nano-calcium carbonate of toughness reinforcing uvioresistant and its production and use | |
| CN111440461A (en) | Preparation method of calcium carbonate special for plastics and coatings | |
| CN105753032B (en) | A kind of heavy nano-calcium carbonate production technology | |
| CN114436307B (en) | Preparation method of special light calcium carbonate for rubber | |
| CN110452558A (en) | A method of preparing hard PVC nanometer calcium carbonate | |
| CN108948796A (en) | A kind of preparation method of high transparency high-grade lithographic ink nanometer calcium carbonate | |
| CN112408449B (en) | Preparation method of monodisperse precipitated calcium carbonate | |
| CN108999012A (en) | The production method of coating paper, art paper, the production method of coating paper and art paper | |
| CN108585011A (en) | A kind of preparation process of nanometer calcium carbonate for solvent type ink addition agent | |
| CN101585977B (en) | Preparation method of polypropylene reinforced plasticized modifier | |
| CN105694537B (en) | A kind of preparation method of hard PVC filling nano-calcium carbonate | |
| CN112480713A (en) | Preparation method of nano calcium carbonate for filling polyethylene transparent film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180323 |
|
| RJ01 | Rejection of invention patent application after publication |