CN103772862A - Partial alcoholysis type polyvinyl alcohol powder easy to disperse in water and preparation method thereof - Google Patents
Partial alcoholysis type polyvinyl alcohol powder easy to disperse in water and preparation method thereof Download PDFInfo
- Publication number
- CN103772862A CN103772862A CN201410007290.2A CN201410007290A CN103772862A CN 103772862 A CN103772862 A CN 103772862A CN 201410007290 A CN201410007290 A CN 201410007290A CN 103772862 A CN103772862 A CN 103772862A
- Authority
- CN
- China
- Prior art keywords
- water
- polyvinyl alcohol
- alcoholysis type
- partial alcoholysis
- preparation
- 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
Abstract
The invention relates to partial alcoholysis type polyvinyl alcohol powder easy to disperse in water and a preparation method thereof. The preparation method comprises two steps: S1, first, preparing a component A which consists of the following components in parts by weight: 3-8 parts of a separant, 10-25 parts of a dispersing wetting agent, 20-30 parts of a coalescing agent and 37-67 parts of water and is prepared by stirring and dispersing for 30 minutes at 80-95 DEG C; S2, stirring 90-95 parts of the alcoholysis type polyvinyl alcohol (PVA) and 5-10 parts of the component A at a low speed in a high speed stirrer for 15-30 minutes and then stirring for 30-60 minutes at a high speed. The partial alcoholysis type polyvinyl alcohol powder (PVA) easy to disperse in water prepared by the method provided by the invention is extremely easy to disperse uniformly in water and is not agglomerated and wrapped, so that the dissolving time is shortened to a great extent to improve the dissolving efficiency.
Description
Technical field
The present invention relates to a kind of pva powder, particularly a kind of partial alcoholysis type pva powder in water and preparation method thereof that is easily scattered in.
Background technology
Polyvinyl alcohol (PVA) is in the time being mixed with the aqueous solution, conventional method is to be first dispersed in cold water, then under agitation carry out heating for dissolving, generally to be heated to 90 ℃-95 ℃, complete after dissolving, then at this temperature, keep about 30 minutes, and maintain stirring and then obtain the polyvinyl alcohol water solution of even homogeneous.In order to improve the dissolution rate of polyvinyl alcohol in water, a lot of polyvinyl alcohol products are directly processed into 25-120 object powder, and the dissolution time of polyvinyl alcohol in water shortened and the efficiency of raising obtained aqueous solution; But because the PVA of partial alcoholysis type is very easily swelling and be partly dissolved in cold water, so be easy to make the powder being added to the water to occur mutually wrapping up and uniting phenomenon, affect on the contrary its dispersion and dissolving in water.And the inventive method is exactly the solution proposing for this problem, not only in the dissolution process of PVA, can make pva powder not produce mutual parcel and the phenomenon of uniting in being scattered in water uniformly, and more be conducive to the dissolving of polyvinyl alcohol in water and improve the efficiency of preparation polyvinyl alcohol water solution.
Application of the present invention and use field are the various product of polyvinyl alcohol (PVA) aqueous solution and the preparation of intermediates, the preparation etc. of producing water-soluble film raw material as polyvinyl alcohol glue, polyvinyl alcohol water solution curtain coating.Comprise that all kinds of use partial alcoholysis type polyvinyl alcohol are produced and the field of obtained aqueous solution.
Summary of the invention
The present invention is difficult for homodisperse defect in order to overcome existing partial alcoholysis type pva powder in water, a kind of preparation method who is easily scattered in the partial alcoholysis type PVAC polyvinylalcohol powder in water is provided, and the partial alcoholysis type PVAC polyvinylalcohol powder that prepared by the inventive method be easily scattered in water is applicable to that all kinds of use partial alcoholysis type polyvinyl alcohol are produced and the Application Areas of obtained aqueous solution.The present invention is achieved by the following technical solutions.
A kind of preparation method who is easily scattered in the partial alcoholysis type PVAC polyvinylalcohol powder in water, preparation method is: first prepare a kind of A component, then partial alcoholysis type PVAC polyvinylalcohol powder and A component are mixed with and obtain a kind of partial alcoholysis type pva powder being easily scattered in water.
Above-mentioned preparation method, described A components based on weight percentage, comprising:
Separant 3%-8%
Disperse wetting agent 10%-25%
Film coalescence aid 20%-30%
Water 37 %-67%
Above-mentioned preparation method, described a kind of partial alcoholysis type pva powder being easily scattered in water is formed by partial alcoholysis type PVAC polyvinylalcohol powder and being mixed with of A component, and wherein the ratio of partial alcoholysis type PVAC polyvinylalcohol powder and A component is counted by weight:
Partial alcoholysis type PVAC polyvinylalcohol powder 90%-95 %
A component 5 %-10 %
Above-mentioned preparation method, partial alcoholysis type PVAC polyvinylalcohol powder comprises polyvinyl alcohol 0588, polyvinyl alcohol 1788, polyvinyl alcohol 2088, polyvinyl alcohol 2288, polyvinyl alcohol 2488 or polyvinyl alcohol 2688.
Above-mentioned preparation method, described separant refers to water-soluble natural resin or the synthetic resins with partial alcoholysis type polyvinyl alcohol with better consistency, and have and only swellingly in cold water do not dissolve as the resin of separant, but the feature that can be dissolved in the water very soon after heating.
Above-mentioned preparation method, described dispersion wetting agent is the nonionogenic tenside of hydrophile-lipophile balance value in 13-18 intervals, comprise Vinlub 73, polyoxyethylene laurel ether, polyoxyethylene (4EO) sorbitan mono-laurate, polyoxyethylene (24EO) cholesterol ethers, polyoxypropylene (20PO) wool alcohol ether, polyoxyethylene 20 sorbitan monolaurate, polyoxyethylene (20EO) sorbitan monostearate, polyoxyethylene (16EO) wool alcohol ether, polyoxyethylene (20EO) sorbitan monooleate, polyoxyethylene glycol monopalmitate, polyoxyl 40 stearate, more than one in Vinlub 73 or polyoxyethylene (20EO) sorbitan mono-laurate, described film coalescence aid refer to A component in isolate resin and have the water-soluble polyol of excellent compatibility, comprise more than one in glycerol, ethylene glycol, Macrogol 200, poly(oxyethylene glycol) 400, Polyethylene Glycol-600 or polyoxyethylene glycol 800.
Above-mentioned preparation method, the preparation method of described A component is: first in water, separant, dispersion wetting agent and film coalescence aid are disperseed, then under the condition of high-speed stirring, be heated to 80-95 ℃ of insulation 15 – 60min and fully mix, be cooled to 30--60 ℃ are for subsequent use; The rotating speed of described high-speed stirring is 500--1500 revs/min.
Above-mentioned preparation method, described a kind of concrete preparation method who is easily scattered in the partial alcoholysis type pva powder in water is: partial alcoholysis type PVAC polyvinylalcohol powder is put into homogenizer, start stirring, under agitation add A component, low speed 100--300 revs/min stir 15--30 minutes; Then high-speed stirring 1000--1500 rev/min of 30 – 60 minutes, is cooled to room temperature and obtains a kind of partial alcoholysis type pva powder being easily scattered in water; The temperature that wherein A component is added is 60 ℃ of 50 –.
Above-mentioned preparation method, described separant comprises more than one in polyvinyl alcohol 0599, polyvinyl alcohol 1799, polyvinyl alcohol 2099, polyvinyl alcohol 2499 or the polyvinyl alcohol 2699 of gelatin, agar-agar, complete alcoholysis type.
Compared with existing partial alcoholysis type polyvinyl alcohol (PVA) powder, tool of the present invention has the following advantages and technique effect:
In the aqueous solution process of preparation partial alcoholysis type polyvinyl alcohol (PVA) powder, the powder that directly adds the inventive method to prepare in water, this not conglomeration of powder in water, does not produce parcel and easily disperses each other, is scattered in uniformly in water; In heat-processed, very fast dissolving uniformly, can shorten the dissolution time of PVA in water, and the solution dissolving is even.Be difficult to very fast well-proportioned dispersion and be not directly added to the water through partial alcoholysis type polyvinyl alcohol (PVA) powder of any processing, very easily produce conglomeration and parcel, make wrapped PVA powder be not easy by water moistening, so dissolution rate is slack-off, dissolution time extends, and even makes solution produce and dissolves the mass defects such as inhomogeneous.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to further concrete detailed description in detail, but enforcement of the present invention and protection domain are not limited to this.
embodiment 1
A component:
Gelatin 5kg
Polyoxyethylene (20EO) sorbitan monooleate 15kg
Glycerol 20kg
Water 60kg
After the metering of each component, put into the stirrer with heating jacket above, the chuck of stirrer heated stirring under (1000 revs/min), be heated to 80 ℃, at this temperature, proceed dispersed with stirring 30 minutes, be then cooled to 50 ℃ for subsequent use.
Easily be scattered in partial alcoholysis type polyvinyl alcohol (PVA) powder preparation in water:
Polyvinyl alcohol-1788 (80 order) 94kg
A component 6kg
After metering, homogenizer is put into in polyvinyl alcohol-1788, start stirring at low speed, the A component of above-mentioned preparation is added uniformly, low speed (300 revs/min) stirs 15 minutes, then start at a high speed (1500 revs/min) and stir 30 minutes, what cooling discharging obtained prepared by the inventive method is easily scattered in the partial alcoholysis type polyvinyl alcohol-1788(PVA in water) powder.
That gets that the present embodiment prepares is easily scattered in the partial alcoholysis type polyvinyl alcohol-1788(PVA in water) powder (80 order), 10g adds in 90mL water, under stirring (200 revs/min, down together) 5 – is scattered in water within 10 seconds uniformly, this not conglomeration of powder in water, each other do not produce parcel and easily disperse, be scattered in uniformly in water; Under stirring, be heated to 80 ℃ and keep soluble in water completely uniformly after 10 minutes.And not through polyvinyl alcohol-1788 of processing of the present invention (80 order) under above-mentioned same test conditions, in water, do not can be uniformly dispersed, parcel is united, and is heated to 90--need to keep after 95 ℃ the temperature more than 30 minutes could be completely soluble in water.
embodiment 2
A component:
Agar-agar 3kg
Vinlub 73 10kg
Ethylene glycol 25kg
Water 62kg
After the metering of each component, put into the stirrer with heating jacket above, the chuck of stirrer heated stirring under (800 revs/min), be heated to 85 ℃, at this temperature, proceed dispersed with stirring 30 minutes, be then cooled to 40 ℃ for subsequent use.
Easily be scattered in partial alcoholysis type polyvinyl alcohol (PVA) powder preparation in water:
Polyvinyl alcohol-0588 (100 order) 92kg
A component 8kg
After metering, homogenizer is put into in polyvinyl alcohol-0588, start stirring at low speed, the A component of above-mentioned preparation is added uniformly, low speed (300 revs/min) stirs 20 minutes, then start at a high speed (1200 revs/min) and stir 40 minutes, what cooling discharging obtained prepared by the inventive method is easily scattered in the partial alcoholysis type polyvinyl alcohol-0588(PVA in water) powder.
Easily being scattered in of getting that the present embodiment prepares is easily scattered in the partial alcoholysis type polyvinyl alcohol-0588(PVA in water in water) (100 order) powder, 20g adds in 80mL water, under stirring (200 revs/min, within 10 seconds, can be scattered in uniformly in water down together), this not conglomeration of powder in water, each other do not produce parcel and easily disperse, be scattered in uniformly in water; Under stirring, be heated to 80 ℃ and keep soluble in water completely uniformly after 10 minutes.And not through processing of the present invention-0588(PVA) (100 order) powder under above-mentioned same test conditions, in water, do not can be uniformly dispersed, parcel is united, and is heated to 90--need to keep after 95 ℃ the temperature more than 30 minutes could be completely soluble in water.
embodiment 3
A component:
Polyvinyl alcohol-0599 8kg
Polyoxyethylene glycol monopalmitate 20kg
Polyoxyethylene glycol-200 10kg
Water 62kg
After the metering of each component, put into the stirrer with heating jacket above, the chuck of stirrer heated stirring under (500 revs/min), be heated to 85 ℃, at this temperature, proceed dispersed with stirring 30 minutes, be then cooled to 50 ℃ for subsequent use.
Easily be scattered in partial alcoholysis type polyvinyl alcohol (PVA) powder preparation in water:
Polyvinyl alcohol-2088 (120 order) 95kg
A component 5kg
After metering, homogenizer is put into in polyvinyl alcohol-2088, start stirring at low speed, the A component of above-mentioned preparation is added uniformly, low speed (300 revs/min) stirs 20 minutes, then start at a high speed (1500 revs/min) and stir 50 minutes, what cooling discharging obtained prepared by the inventive method is easily scattered in the partial alcoholysis type polyvinyl alcohol-2088(PVA in water) powder.
That gets that the present embodiment prepares is easily scattered in the partial alcoholysis type polyvinyl alcohol-2088(PVA in water) 120 order powder, 12g is incorporated in 88mL water, under stirring (200 revs/min, within 10 seconds, can be scattered in uniformly in water down together), this not conglomeration of powder in water, each other do not produce parcel and easily disperse, be scattered in uniformly in water; Under stirring, be heated to 90 ℃ and keep soluble in water completely uniformly after 15 minutes.And not through processing of the present invention-2088(PVA) (120 order) powder under above-mentioned same test conditions, in water, do not can be uniformly dispersed, parcel is united, and needs to keep after being heated to 95 ℃ the temperature more than 45 minutes could be completely soluble in water.
embodiment 4
A component:
Polyvinyl alcohol-1799 5kg
Polyoxyethylene laurel ether 15kg
PEG-4000 20kg
Water 60kg
After the metering of each component, put into the stirrer with heating jacket above, the chuck of stirrer heated stirring under (1000 revs/min), be heated to 95 ℃, at this temperature, proceed dispersed with stirring 30 minutes, be then cooled to 50 ℃ for subsequent use.
Easily be scattered in partial alcoholysis type polyvinyl alcohol (PVA) powder preparation in water:
Polyvinyl alcohol-2488 (100 order) 94kg
A component 6kg
After metering, homogenizer is put into in polyvinyl alcohol-2488, start stirring at low speed, the A component of above-mentioned preparation is added uniformly, low speed (300 revs/min) stirs 20 minutes, then start at a high speed (1200 revs/min) and stir 30 minutes, what cooling discharging obtained prepared by the inventive method is easily scattered in the partial alcoholysis type polyvinyl alcohol-2488(PVA in water) powder.
That gets that the present embodiment prepares is easily scattered in the partial alcoholysis type polyvinyl alcohol-2488(PVA in water) (100 order) powder, 10g adds in 90mL water, under stirring (200 revs/min, within 10 seconds, can be scattered in uniformly in water down together), this not conglomeration of powder in water, each other do not produce parcel and easily disperse, be scattered in uniformly in water; Under stirring, be heated to 90 ℃ and keep soluble in water completely uniformly after 15 minutes.And not through processing of the present invention-2488(PVA) (100 order) powder under above-mentioned same test conditions, in water, do not can be uniformly dispersed, parcel is united, and needs to keep after being heated to 95 ℃ the temperature more than 45 minutes could be completely soluble in water.
Claims (10)
1. one kind is easily scattered in the preparation method of the partial alcoholysis type pva powder in water, it is characterized in that, preparation method is: first prepare a kind of A component, then partial alcoholysis type PVAC polyvinylalcohol powder and A component are mixed with and obtain a kind of partial alcoholysis type pva powder being easily scattered in water.
2. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 1, is characterized in that: described A components based on weight percentage, comprising:
Separant 3%-8%
Disperse wetting agent 10%-25%
Film coalescence aid 20%-30%
Water 37 %-67%.
3. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 1, it is characterized in that, in the described partial alcoholysis type pva powder being easily scattered in water, the weight percent of partial alcoholysis type PVAC polyvinylalcohol powder and A component is:
Partial alcoholysis type PVAC polyvinylalcohol powder 90%-95 %
A component 5 %-10 %.
4. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 1, it is characterized in that, partial alcoholysis type PVAC polyvinylalcohol powder comprises polyvinyl alcohol 0588, polyvinyl alcohol 1788, polyvinyl alcohol 2088, polyvinyl alcohol 2288, polyvinyl alcohol 2488 or polyvinyl alcohol 2688.
5. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 2, it is characterized in that, described separant refers to water-soluble natural resin or the synthetic resins with partial alcoholysis type polyvinyl alcohol with consistency, and have and only swellingly in cold water do not dissolve as the resin of separant, but the feature that can be dissolved in the water after heating.
6. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 2, it is characterized in that: described dispersion wetting agent is the nonionogenic tenside of hydrophile-lipophile balance value in 13-18 intervals, comprise Vinlub 73, polyoxyethylene laurel ether, polyoxyethylene (4EO) sorbitan mono-laurate, polyoxyethylene (24EO) cholesterol ethers, polyoxypropylene (20PO) wool alcohol ether, polyoxyethylene 20 sorbitan monolaurate, polyoxyethylene (20EO) sorbitan monostearate, polyoxyethylene (16EO) wool alcohol ether, polyoxyethylene (20EO) sorbitan monooleate, polyoxyethylene glycol monopalmitate, polyoxyl 40 stearate, more than one in Vinlub 73 or polyoxyethylene (20EO) sorbitan mono-laurate, described film coalescence aid refer to A component in isolate resin and have the water-soluble polyol of excellent compatibility, comprise more than one in glycerol, ethylene glycol, Macrogol 200, poly(oxyethylene glycol) 400, Polyethylene Glycol-600 or polyoxyethylene glycol 800.
7. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 2, it is characterized in that, the preparation method of described A component is: first in water, separant, dispersion wetting agent and film coalescence aid are disperseed, then under the condition of high-speed stirring, be heated to 80-95 ℃ of insulation 15 – 60min and fully mix, be cooled to 30--60 ℃ are for subsequent use; The rotating speed of described high-speed stirring is 500--1500 revs/min.
8. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 3, it is characterized in that: described a kind of concrete preparation method who is easily scattered in the partial alcoholysis type pva powder in water is: partial alcoholysis type PVAC polyvinylalcohol powder is put into homogenizer, start stirring, under agitation add A component, low speed 100--300 revs/min stir 15--30 minutes; Then high-speed stirring 1000--1500 rev/min of 30 – 60 minutes, is cooled to room temperature and obtains a kind of partial alcoholysis type pva powder being easily scattered in water; The temperature that wherein A component is added is 60 ℃ of 50 –.
9. a kind of preparation method who is easily scattered in the partial alcoholysis type pva powder in water according to claim 5, it is characterized in that, described separant comprises more than one in polyvinyl alcohol 0599, polyvinyl alcohol 1799, polyvinyl alcohol 2099, polyvinyl alcohol 2499 or the polyvinyl alcohol 2699 of gelatin, agar-agar, complete alcoholysis type.
10. prepare a kind of partial alcoholysis type pva powder being easily scattered in water by the arbitrary described preparation method of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007290.2A CN103772862B (en) | 2014-01-08 | 2014-01-08 | A kind of partial alcoholysis type pva powder being easily dispersed in water and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007290.2A CN103772862B (en) | 2014-01-08 | 2014-01-08 | A kind of partial alcoholysis type pva powder being easily dispersed in water and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103772862A true CN103772862A (en) | 2014-05-07 |
| CN103772862B CN103772862B (en) | 2016-10-05 |
Family
ID=50565659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410007290.2A Expired - Fee Related CN103772862B (en) | 2014-01-08 | 2014-01-08 | A kind of partial alcoholysis type pva powder being easily dispersed in water and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103772862B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838007A (en) * | 2016-04-30 | 2016-08-10 | 华南理工大学 | Polyvinyl alcohol powder soluble in water and preparation method thereof |
| CN106189014A (en) * | 2016-07-25 | 2016-12-07 | 刘才裕 | Disposable Spattering-proof for closet film |
| CN107216464A (en) * | 2017-06-14 | 2017-09-29 | 荆州市九天化工科技有限公司 | A kind of preparation method of rapidly-soluble polyvinyl alcohol |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7012116B1 (en) * | 1998-06-01 | 2006-03-14 | Kimberly-Clark Worldwide, Inc. | Blend compositions of an unmodified poly vinyl alcohol and a thermoplastic elastomer |
| WO2009154179A1 (en) * | 2008-06-16 | 2009-12-23 | 株式会社クラレ | Polyvinyl chloride resin composition and method for producing the same |
| CN102816333A (en) * | 2012-09-05 | 2012-12-12 | 安徽皖维集团有限责任公司 | Preparation method of high-concentration PVA (polyvinyl alcohol) solution |
| CN102964493A (en) * | 2012-12-06 | 2013-03-13 | 青岛鑫万通塑业发展有限公司 | Method for preparing PVC (polyvinyl chloride) special dispersing agent by using durian peels |
-
2014
- 2014-01-08 CN CN201410007290.2A patent/CN103772862B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7012116B1 (en) * | 1998-06-01 | 2006-03-14 | Kimberly-Clark Worldwide, Inc. | Blend compositions of an unmodified poly vinyl alcohol and a thermoplastic elastomer |
| WO2009154179A1 (en) * | 2008-06-16 | 2009-12-23 | 株式会社クラレ | Polyvinyl chloride resin composition and method for producing the same |
| CN102816333A (en) * | 2012-09-05 | 2012-12-12 | 安徽皖维集团有限责任公司 | Preparation method of high-concentration PVA (polyvinyl alcohol) solution |
| CN102964493A (en) * | 2012-12-06 | 2013-03-13 | 青岛鑫万通塑业发展有限公司 | Method for preparing PVC (polyvinyl chloride) special dispersing agent by using durian peels |
Non-Patent Citations (2)
| Title |
|---|
| 戴礼兴等: "部分醇解聚乙烯醇纤维的氢键结构", 《纺织学报》 * |
| 王聪等: "聚乙烯醇水溶液低温稳定性的影响因素", 《高分子材料科学与工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838007A (en) * | 2016-04-30 | 2016-08-10 | 华南理工大学 | Polyvinyl alcohol powder soluble in water and preparation method thereof |
| CN105838007B (en) * | 2016-04-30 | 2019-01-15 | 华南理工大学 | A kind of pva powder soluble easily in water and preparation method thereof |
| CN106189014A (en) * | 2016-07-25 | 2016-12-07 | 刘才裕 | Disposable Spattering-proof for closet film |
| CN107216464A (en) * | 2017-06-14 | 2017-09-29 | 荆州市九天化工科技有限公司 | A kind of preparation method of rapidly-soluble polyvinyl alcohol |
| CN107216464B (en) * | 2017-06-14 | 2018-06-01 | 荆州市九天化工科技有限公司 | A kind of preparation method of rapidly-soluble polyvinyl alcohol |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103772862B (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103772862A (en) | Partial alcoholysis type polyvinyl alcohol powder easy to disperse in water and preparation method thereof | |
| CN106366881A (en) | Preparation method of water-based fast dry low VOC alkyd paint | |
| CN105061689A (en) | Preparation method of powdery polycarboxylic acid high-performance water reducing agent | |
| CN105254208A (en) | Alkali-free liquid setting accelerator containing cellulose and preparation method of alkali-free liquid setting accelerator | |
| CN103819879A (en) | Method for preparing low-viscosity high-performance epoxy casting resin | |
| CN109796914A (en) | A kind of concrete interface treating agent and preparation method thereof | |
| CN106045372A (en) | Polycarboxylate superplasticizer special for concrete and for doping of basalt stone powder in concrete and preparation method thereof | |
| CN109320125B (en) | Concrete admixture, preparation method and use method thereof | |
| CN102417680A (en) | Lead-free PVC-U (Poly Vinyl Chloride-Unplasticized) pipe for drainage and manufacturing method thereof | |
| CN101793639A (en) | Preparation method of standard sample of high molecular material containing harmful substances | |
| CN107445504B (en) | Accelerating agent and preparation method thereof | |
| CN103963323B (en) | A kind of production technology of colorful Teflon microporous membrane | |
| CN103554835B (en) | The preparation method of low-temperature fast-curing enhancing epoxide resin material in a kind of | |
| CN103866630B (en) | A kind of xanthan gum wet strength agent and preparation method thereof | |
| CN103483764B (en) | Red master batches resistant to acid and bases | |
| CN104844890A (en) | Polyethylene corrugated tube | |
| CN103866625B (en) | A kind of paraffin wax sizing agent and preparation method thereof | |
| CN109422288A (en) | A kind of powdered whiting duplex surface method of modifying | |
| CN103058584A (en) | Epoxy resin coating for exterior wall of building | |
| CN104151676A (en) | Preparation method of polyethylene water supply pipe blue identification specially-use material | |
| CN101311136A (en) | Retardation water reducing agent and production process thereof | |
| CN112029048A (en) | Reactive extrusion preparation method of super-slow-release solid polycarboxylic acid water reducer | |
| CN104151677A (en) | Preparation method of polyethylene 100 grade orange gas pipe identification line specially-use material | |
| CN112538246A (en) | Plastic master batch with metallic luster and preparation method thereof | |
| CN104558977A (en) | PVDF (Polyvinylidene Fluoride) color masterbatch and processing 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20220108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |