CN110066131A - The polycarboxylate water-reducer and preparation process of high molecular weight - Google Patents
The polycarboxylate water-reducer and preparation process of high molecular weight Download PDFInfo
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- CN110066131A CN110066131A CN201910268958.1A CN201910268958A CN110066131A CN 110066131 A CN110066131 A CN 110066131A CN 201910268958 A CN201910268958 A CN 201910268958A CN 110066131 A CN110066131 A CN 110066131A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds containing polyether side chains
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Abstract
The invention belongs to polycarboxylate water-reducer preparation technical fields, especially the invention discloses the polycarboxylate water-reducer of high molecular weight and preparation processes, it is made of the raw material of following parts by weight: 300~350 parts of polyoxyethylene ether of 4- hydroxyl butyl vinyl, 5~8 parts of hydroxypropyl acrylate, 5~8 parts of hydroxy-ethyl acrylate, 0.4~2.5 part of oxidant, 0.4~2.2 part of reducing agent, 0.02~0.05 part of catalyst, 0.2~0.5 part of chain-transferring agent, 5~7 parts of 25wt% sodium hydrate aqueous solution, 3~8 parts of sodium gluconate, 3~8 parts of methylpropene sodium sulfonate, 10~15 parts of acrylic acid, appropriate deionized water, the first solution is added dropwise simultaneously, second solution and third solution are into the resulting material of S3, it is added dropwise in 0.4h, 2 are kept the temperature after completion of dropwise addition .0-3.0h.After use of the present invention, obtained concrete strength is high, long service life, is suitble to promote the use of.
Description
Technical field
The present invention relates to the polycarboxylate water-reducer of polycarboxylate water-reducer preparation technical field more particularly to high molecular weight and
Preparation process.
Background technique
Poly carboxylic acid series water reducer has excellent dispersion performance, concrete can be made at low dosage to reach preferable stream
Dynamic property, is widely used in the engineerings such as highway, bridge, dam, tunnel, skyscraper.With the continuous development of polycarboxylic acids technology, gather
The water-reducing rate of carboxylic acid water reducer is continuously improved, although water-reducing rate improves the dosage that can reduce polycarboxylate water-reducer, reduces cost,
The sensibility of polycarboxylate water-reducer is also improved, is shown as in the construction process, the reasonable volume point drop of polycarboxylate water-reducer is a bit
Volume will lead to fresh concrete mobility not enough or loss be too fast, and reasonable volume point mentions some volumes, then easily leads to concrete
Isolation, bleeding, so that concrete production control difficulty increases, i.e., it is sensitive to volume.
Existing poly carboxylic acid series water reducer molecular weight is lower, higher to the sensibility of volume, for this purpose, the present invention proposes high score
The polycarboxylate water-reducer and preparation process of son amount.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and the polycarboxylic acids of the high molecular weight proposed subtracts
Aqua and preparation process.
To achieve the goals above, present invention employs following technical solutions:
The polycarboxylate water-reducer of high molecular weight is made of the raw material of following parts by weight: 4- hydroxyl butyl vinyl polyoxyethylene ether
300~350 parts, 5~8 parts of hydroxypropyl acrylate, 5~8 parts of hydroxy-ethyl acrylate, 2~3 parts of three acrylic amine, oxidant 0.4~
2.5 parts, 0.4~2.2 part of reducing agent, 0.02~0.05 part of catalyst, 0.2~0.5 part of chain-transferring agent, 25wt% sodium hydroxide water
5~7 parts of solution, 3~8 parts of sodium gluconate, 3~8 parts of methylpropene sodium sulfonate, 10~15 parts of acrylic acid, appropriate deionized water.
Preferably, the molecular weight of the 4- hydroxyl butyl vinyl polyoxyethylene ether is 10000~30000.
Preferably, it is made of the raw material of following parts by weight: 320~340 parts of 4- hydroxyl butyl vinyl polyoxyethylene ether, third
6~7 parts of olefin(e) acid hydroxypropyl acrylate, 6~7 parts of hydroxy-ethyl acrylate, 2~3 parts of three acrylic amine, 0.4~2.5 part of oxidant, reducing agent
0.4~2.2 part, 0.02~0.05 part of catalyst, 0.2~0.5 part of chain-transferring agent, 5~7 parts of 25wt% sodium hydrate aqueous solution,
5~6 parts of sodium gluconate, 5~6 parts of methylpropene sodium sulfonate, 11~14 parts of acrylic acid, appropriate deionized water.
Preferably, it is made of the raw material of following parts by weight: 330 parts of 4- hydroxyl butyl vinyl polyoxyethylene ether, acrylic acid
6.5 parts of hydroxypropyl acrylate, 6.5 parts of hydroxy-ethyl acrylate, 2.5 parts of three acrylic amine, 1.2 parts of oxidant, 1.3 parts of reducing agent, catalyst
0.03 part, 0.35 part of chain-transferring agent, 6 parts of 25wt% sodium hydrate aqueous solution, 5.5 parts of sodium gluconate, methylpropene sodium sulfonate
5.5 parts, 13 parts of acrylic acid, appropriate deionized water.
Preferably, the chain-transferring agent is thioacetic acid, mercaptopropionic acid or mercaptoethanol.
Preferably, the oxidant is hydrogen peroxide, sodium peroxydisulfate or ammonium persulfate.
The preparation process of the polycarboxylate water-reducer of high molecular weight, includes the following steps,
S1 weighs each raw material component by weight；
Acrylic acid and chain-transferring agent are dissolved in 10~12 parts by weight of deionized water by S2, and with appropriate 25wt% sodium hydroxide water
Solution adjusts pH to 5.5~6.0, obtains the first solution；Dissolve reduce agent in 5~6 parts by weight of deionized water that obtain second molten
Liquid；Hydroxypropyl acrylate and hydroxy-ethyl acrylate are dissolved in 12~15 parts by weight of deionized water and obtain third solution；
4- hydroxyl butyl vinyl polyoxyethylene ether, methylpropene sodium sulfonate, three acrylic amine and sodium gluconate are dissolved in by S3
In the deionized water of 200~220 parts by weight, then be sequentially added into 40~50% the first solution, appropriate 25wt% sodium hydroxide
Aqueous solution, catalyst and oxidant, and adjust reaction temperature and reacted to 20~26 DEG C；
S4, while the first solution, the second solution and third solution is added dropwise into the resulting material of S3, dripped in 0.4h
Finish, 2.0-3.0h is kept the temperature after completion of dropwise addition；
S5 arrives the height to 6.0~7.0 with the pH value of appropriate 25wt% sodium hydrate aqueous solution adjusting S4 resulting material
The polycarboxylate water-reducer of molecular weight.
Preferably, in the S2, acrylic acid and chain-transferring agent are dissolved in 11 parts by weight of deionized water, and in right amount
25wt% sodium hydrate aqueous solution adjusts pH to 6.0, obtains the first solution；It dissolves reduce agent in 6 parts by weight of deionized water and obtains
To the second solution；Hydroxypropyl acrylate and hydroxy-ethyl acrylate are dissolved in 13 parts by weight of deionized water and obtain third solution.
Compared with prior art, the beneficial effects of the present invention are: point for passing through 4- hydroxyl butyl vinyl polyoxyethylene ether
Son amount is 10000~30000, and the 4- hydroxyl butyl vinyl polyoxyethylene ether of high molecular weight can make water-reducing agent in volume coagulation
After soil, dispersion it is more uniform, guarantor's effect of collapsing is good, by be added 5~8 parts of hydroxypropyl acrylate, 5~8 parts of hydroxy-ethyl acrylate,
Three 2~3 parts of acrylic amine, can accelerate to solidify, and after use of the present invention, obtained concrete strength is high, and long service life is suitble to
It promotes the use of.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
The polycarboxylate water-reducer of high molecular weight proposed by the present invention is made of the raw material of following parts by weight: 4- hydroxyl butyl vinyl
300 parts of polyoxyethylene ether, 5 parts of hydroxypropyl acrylate, 5 parts of hydroxy-ethyl acrylate, 2 parts of three acrylic amine, 0.4 part of oxidant,
0.4 part of reducing agent, 0.02 part of catalyst, 0.2 part of chain-transferring agent, 5 parts of 25wt% sodium hydrate aqueous solution, 3 parts of sodium gluconate,
3 parts of methylpropene sodium sulfonate, 10 parts of acrylic acid, appropriate deionized water.
The preparation process of the polycarboxylate water-reducer of high molecular weight proposed by the present invention, includes the following steps,
S1 weighs each raw material component by weight；
Acrylic acid and chain-transferring agent are dissolved in 10 parts by weight of deionized water by S2, and with appropriate 25wt% sodium hydrate aqueous solution
PH to 5.5 is adjusted, the first solution is obtained；It dissolves reduce agent in 5 parts by weight of deionized water and obtains the second solution；By acrylic acid hydroxyl
Propyl ester and hydroxy-ethyl acrylate, which are dissolved in 12 parts by weight of deionized water, obtains third solution；
4- hydroxyl butyl vinyl polyoxyethylene ether, methylpropene sodium sulfonate, three acrylic amine and sodium gluconate are dissolved in by S3
In the deionized water of 200 parts by weight, then be sequentially added into 40% the first solution, appropriate 25wt% sodium hydrate aqueous solution, urge
Agent and oxidant, and adjust reaction temperature and reacted to 20 DEG C；
S4, while the first solution, the second solution and third solution is added dropwise into the resulting material of S3, dripped in 0.4h
Finish, 2.0h is kept the temperature after completion of dropwise addition；
S5 arrives the high molecular weight to 6.0 with the pH value of appropriate 25wt% sodium hydrate aqueous solution adjusting S4 resulting material
Polycarboxylate water-reducer.
Embodiment two
The polycarboxylate water-reducer of high molecular weight proposed by the present invention is made of the raw material of following parts by weight: 4- hydroxyl butyl vinyl
330 parts of polyoxyethylene ether, 6.5 parts of hydroxypropyl acrylate, 6.5 parts of hydroxy-ethyl acrylate, 2.5 parts of three acrylic amine, oxidant
1.2 parts, 1.3 parts of reducing agent, 0.03 part of catalyst, 0.35 part of chain-transferring agent, 6 parts of 25wt% sodium hydrate aqueous solution, glucose
5.5 parts of sour sodium, 5.5 parts of methylpropene sodium sulfonate, 13 parts of acrylic acid, appropriate deionized water.
The preparation process of the polycarboxylate water-reducer of high molecular weight proposed by the present invention, includes the following steps,
S1 weighs each raw material component by weight；
Acrylic acid and chain-transferring agent are dissolved in 11 parts by weight of deionized water by S2, and with appropriate 25wt% sodium hydrate aqueous solution
PH to 6.0 is adjusted, the first solution is obtained；It dissolves reduce agent in 6 parts by weight of deionized water and obtains the second solution；By acrylic acid hydroxyl
Propyl ester and hydroxy-ethyl acrylate, which are dissolved in 13 parts by weight of deionized water, obtains third solution；
4- hydroxyl butyl vinyl polyoxyethylene ether, methylpropene sodium sulfonate, three acrylic amine and sodium gluconate are dissolved in by S3
In the deionized water of 205 parts by weight, then be sequentially added into 43% the first solution, appropriate 25wt% sodium hydrate aqueous solution, urge
Agent and oxidant, and adjust reaction temperature and reacted to 22 DEG C；
S4, while the first solution, the second solution and third solution is added dropwise into the resulting material of S3, dripped in 0.4h
Finish, 2.4h is kept the temperature after completion of dropwise addition；
S5 arrives the high molecular weight to 6.5 with the pH value of appropriate 25wt% sodium hydrate aqueous solution adjusting S4 resulting material
Polycarboxylate water-reducer.
Embodiment three
The polycarboxylate water-reducer of high molecular weight proposed by the present invention is made of the raw material of following parts by weight: 4- hydroxyl butyl vinyl
330 parts of polyoxyethylene ether, 6.5 parts of hydroxypropyl acrylate, 6.5 parts of hydroxy-ethyl acrylate, 2.5 parts of three acrylic amine, oxidant
1.2 parts, 1.3 parts of reducing agent, 0.03 part of catalyst, 0.35 part of chain-transferring agent, 6 parts of 25wt% sodium hydrate aqueous solution, glucose
5.5 parts of sour sodium, 5.5 parts of methylpropene sodium sulfonate, 13 parts of acrylic acid, appropriate deionized water.
The preparation process of the polycarboxylate water-reducer of high molecular weight proposed by the present invention, includes the following steps,
S1 weighs each raw material component by weight；
Acrylic acid and chain-transferring agent are dissolved in 11 parts by weight of deionized water by S2, and with appropriate 25wt% sodium hydrate aqueous solution
PH to 6.0 is adjusted, the first solution is obtained；It dissolves reduce agent in 5.5 parts by weight of deionized water and obtains the second solution；By acrylic acid
Hydroxypropyl acrylate and hydroxy-ethyl acrylate, which are dissolved in 14 parts by weight of deionized water, obtains third solution；
4- hydroxyl butyl vinyl polyoxyethylene ether, methylpropene sodium sulfonate, three acrylic amine and sodium gluconate are dissolved in by S3
In the deionized water of 210 parts by weight, then be sequentially added into 45% the first solution, appropriate 25wt% sodium hydrate aqueous solution, urge
Agent and oxidant, and adjust reaction temperature and reacted to 24 DEG C；
S4, while the first solution, the second solution and third solution is added dropwise into the resulting material of S3, dripped in 0.4h
Finish, 2.7h is kept the temperature after completion of dropwise addition；
S5 arrives the high molecular weight to 7.0 with the pH value of appropriate 25wt% sodium hydrate aqueous solution adjusting S4 resulting material
Polycarboxylate water-reducer.
Example IV
The polycarboxylate water-reducer of high molecular weight proposed by the present invention is made of the raw material of following parts by weight: 4- hydroxyl butyl vinyl
350 parts of polyoxyethylene ether, 8 parts of hydroxypropyl acrylate, 8 parts of hydroxy-ethyl acrylate, 3 parts of three acrylic amine, 2.5 parts of oxidant,
2.2 parts of reducing agent, 0.05 part of catalyst, 0.5 part of chain-transferring agent, 7 parts of 25wt% sodium hydrate aqueous solution, 8 parts of sodium gluconate,
8 parts of methylpropene sodium sulfonate, 15 parts of acrylic acid, appropriate deionized water.
The preparation process of the polycarboxylate water-reducer of high molecular weight proposed by the present invention, includes the following steps,
S1 weighs each raw material component by weight；
Acrylic acid and chain-transferring agent are dissolved in 12 parts by weight of deionized water by S2, and with appropriate 25wt% sodium hydrate aqueous solution
PH to 6.0 is adjusted, the first solution is obtained；It dissolves reduce agent in 6 parts by weight of deionized water and obtains the second solution；By acrylic acid hydroxyl
Propyl ester and hydroxy-ethyl acrylate, which are dissolved in 12~15 parts by weight of deionized water, obtains third solution；
4- hydroxyl butyl vinyl polyoxyethylene ether, methylpropene sodium sulfonate, three acrylic amine and sodium gluconate are dissolved in by S3
In the deionized water of 220 parts by weight, then be sequentially added into 50% the first solution, appropriate 25wt% sodium hydrate aqueous solution, urge
Agent and oxidant, and adjust reaction temperature and reacted to 26 DEG C；
S4, while the first solution, the second solution and third solution is added dropwise into the resulting material of S3, dripped in 0.4h
Finish, 3.0h is kept the temperature after completion of dropwise addition；
S5 arrives the high molecular weight to 7.0 with the pH value of appropriate 25wt% sodium hydrate aqueous solution adjusting S4 resulting material
Polycarboxylate water-reducer.
By embodiment one~tetra- synthesize the obtained polycarboxylate water-reducer of high molecular weight and commercially available polycarboxylate water-reducer into
Row volume concrete performance compares, shown in following table:
In the present invention, the molecular weight by 4- hydroxyl butyl vinyl polyoxyethylene ether is 10000~30000, high molecular weight
4- hydroxyl butyl vinyl polyoxyethylene ether can make water-reducing agent after volume concrete, dispersion it is more uniform, guarantor is collapsed effect
It is good, by the way that 5~8 parts of hydroxypropyl acrylate, 5~8 parts of hydroxy-ethyl acrylate, 2~3 parts of three acrylic amine is added, can accelerate to coagulate
Gu after use of the present invention, obtained concrete strength is high, long service life, it is suitble to promote the use of.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. the polycarboxylate water-reducer of high molecular weight, which is characterized in that be made of the raw material of following parts by weight: 4- hydroxyl butylethylene
300~350 parts of base polyoxyethylene ether, 5~8 parts of hydroxypropyl acrylate, 5~8 parts of hydroxy-ethyl acrylate, three acrylic amine 2~3
Part, 0.4~2.5 part of oxidant, 0.4~2.2 part of reducing agent, 0.02~0.05 part of catalyst, 0.2~0.5 part of chain-transferring agent,
5~7 parts of 25wt% sodium hydrate aqueous solution, 3~8 parts of sodium gluconate, 3~8 parts of methylpropene sodium sulfonate, acrylic acid 10~15
Part, appropriate deionized water.
2. the polycarboxylate water-reducer of high molecular weight according to claim 1, which is characterized in that the 4- hydroxyl butyl vinyl
The molecular weight of polyoxyethylene ether is 10000~30000.
3. the polycarboxylate water-reducer of high molecular weight according to claim 1, which is characterized in that by the raw material of following parts by weight
Composition: 320~340 parts of 4- hydroxyl butyl vinyl polyoxyethylene ether, 6~7 parts of hydroxypropyl acrylate, hydroxy-ethyl acrylate 6~7
Part, 2~3 parts of three acrylic amine, 0.4~2.5 part of oxidant, 0.4~2.2 part of reducing agent, 0.02~0.05 part of catalyst, chain turn
Move 0.2~0.5 part of agent, 5~7 parts of 25wt% sodium hydrate aqueous solution, 5~6 parts of sodium gluconate, methylpropene sodium sulfonate 5~6
Part, 11~14 parts of acrylic acid, appropriate deionized water.
4. the polycarboxylate water-reducer of high molecular weight according to claim 1, which is characterized in that by the raw material of following parts by weight
Composition: 330 parts of 4- hydroxyl butyl vinyl polyoxyethylene ether, 6.5 parts of hydroxypropyl acrylate, 6.5 parts of hydroxy-ethyl acrylate, 3 third
2.5 parts of alkenyl amine, 1.2 parts of oxidant, 1.3 parts of reducing agent, 0.03 part of catalyst, 0.35 part of chain-transferring agent, 25wt% hydroxide
6 parts of sodium water solution, 5.5 parts of sodium gluconate, 5.5 parts of methylpropene sodium sulfonate, 13 parts of acrylic acid, appropriate deionized water.
5. the polycarboxylate water-reducer of high molecular weight according to claim 1, which is characterized in that the chain-transferring agent is sulfydryl
Acetic acid, mercaptopropionic acid or mercaptoethanol.
6. the polycarboxylate water-reducer of high molecular weight according to claim 1, which is characterized in that the oxidant is peroxidating
Hydrogen, sodium peroxydisulfate or ammonium persulfate.
7. the preparation process of the polycarboxylate water-reducer of high molecular weight described in any one of claim 1-6 claim, special
Sign is, includes the following steps,
S1 weighs each raw material component by weight；
Acrylic acid and chain-transferring agent are dissolved in 10~12 parts by weight of deionized water by S2, and with appropriate 25wt% sodium hydroxide water
Solution adjusts pH to 5.5~6.0, obtains the first solution；Dissolve reduce agent in 5~6 parts by weight of deionized water that obtain second molten
Liquid；Hydroxypropyl acrylate and hydroxy-ethyl acrylate are dissolved in 12~15 parts by weight of deionized water and obtain third solution；
4- hydroxyl butyl vinyl polyoxyethylene ether, methylpropene sodium sulfonate, three acrylic amine and sodium gluconate are dissolved in by S3
In the deionized water of 200~220 parts by weight, then be sequentially added into 40~50% the first solution, appropriate 25wt% sodium hydroxide
Aqueous solution, catalyst and oxidant, and adjust reaction temperature and reacted to 20~26 DEG C；
S4, while the first solution, the second solution and third solution is added dropwise into the resulting material of S3, dripped in 0.4h
Finish, 2.0-3.0h is kept the temperature after completion of dropwise addition；
S5 arrives the height to 6.0~7.0 with the pH value of appropriate 25wt% sodium hydrate aqueous solution adjusting S4 resulting material
The polycarboxylate water-reducer of molecular weight.
8. the preparation process of the polycarboxylate water-reducer of high molecular weight according to claim 7, which is characterized in that the S2
In, acrylic acid and chain-transferring agent are dissolved in 11 parts by weight of deionized water, and is adjusted with appropriate 25wt% sodium hydrate aqueous solution
PH to 6.0 obtains the first solution；It dissolves reduce agent in 6 parts by weight of deionized water and obtains the second solution；By hydroxypropyl acrylate
It is dissolved in 13 parts by weight of deionized water with hydroxy-ethyl acrylate and obtains third solution.
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|---|---|---|---|---|
| EP1655272A1 (en) * | 2004-11-04 | 2006-05-10 | Mapei S.p.A. | Superplasticizers for extending the workability of mortars |
| CN107325236A (en) * | 2017-07-15 | 2017-11-07 | 刘翠芬 | A kind of non-soil responsive type polycarboxylate water-reducer and preparation method thereof |
| CN108192038A (en) * | 2017-12-28 | 2018-06-22 | 科之杰新材料集团有限公司 | A kind of ultra high early strength poly-carboxylic water-reducing agent solidifying soon and preparation method thereof |
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- 2019-04-04 CN CN201910268958.1A patent/CN110066131A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655272A1 (en) * | 2004-11-04 | 2006-05-10 | Mapei S.p.A. | Superplasticizers for extending the workability of mortars |
| CN107325236A (en) * | 2017-07-15 | 2017-11-07 | 刘翠芬 | A kind of non-soil responsive type polycarboxylate water-reducer and preparation method thereof |
| CN108192038A (en) * | 2017-12-28 | 2018-06-22 | 科之杰新材料集团有限公司 | A kind of ultra high early strength poly-carboxylic water-reducing agent solidifying soon and preparation method thereof |
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Application publication date: 20190730 |