CN108911559A - A kind of preparation method of modified sulfamate water reducer - Google Patents
A kind of preparation method of modified sulfamate water reducer Download PDFInfo
- Publication number
- CN108911559A CN108911559A CN201810851221.8A CN201810851221A CN108911559A CN 108911559 A CN108911559 A CN 108911559A CN 201810851221 A CN201810851221 A CN 201810851221A CN 108911559 A CN108911559 A CN 108911559A
- Authority
- CN
- China
- Prior art keywords
- agent
- water
- preparation
- condensing agent
- added
- 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
Classifications
-
- 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
- C04B24/20—Sulfonated aromatic compounds
- C04B24/22—Condensation or polymerisation products thereof
-
- 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
- C04B24/20—Sulfonated aromatic compounds
- C04B24/22—Condensation or polymerisation products thereof
- C04B24/226—Sulfonated naphtalene-formaldehyde condensation products
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of preparation methods of modified sulfamate water reducer, (1) aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier and water are added in reaction kettle, heat up stirring and dissolving, and alkaline conditioner is then added and adjusts pH to 8~9；(2) step (1) resulting material is continuously heating to 70~80 DEG C, starts that condensing agent is slowly added dropwise, in dripping off in 2h, while maintaining the temperature at 70~80 DEG C, 80~90 DEG C are warming up to after being added dropwise, heat preservation；(3) reaction terminating agent and water are added into step (2) resulting material, is continuously heating to 80~90 DEG C, then keeps the temperature；(4) step (3) resulting material is cooled to room temperature, adjust pH to 7~8 to get.The present invention forms the network molecular structure with highly branched chain by introducing the polynary polycondensation such as modifying agent and phenolic compound, condensing agent and aminobenzenesulfonic acid/amino phenyl sulfonyl hydrochlorate, diminishing agent molecule is spatially adsorbed in cement particle surface, and concrete is made to have good dispersibility and dispersion holding capacity.
Description
Technical field
The invention belongs to build additive technical field, and in particular to a kind of preparation side of modified sulfamate water reducer
Method.
Background technique
In recent years, it is grown rapidly with concrete technology to high-strength, green, high-performance direction, as important in concrete
The water-reducing agent of component part be also suggested it is higher, more fully require, traditional water-reducing agent has been unable to meet requirement.Traditional
Although naphthalene system and melamine superplasticizer technical maturity, due to its water-reducing rate is low, collapse damage fast and cement adaptability compared with
The reasons such as difference show obvious deficiency in terms of preparing high performance concrete, bring inconvenience to coagulation scholar construction；Polycarboxylic acids
Water-reducing agent water-reducing rate is high, it is strong to protect modeling ability, and its structure and function also have very strong designability, it is considered to be efficiently subtract
The regeneration product of aqua, but practical polycarboxylate water-reducer be also faced in use it is sensitive to water consumption and volume, to containing
The disadvantages of mud amount is sensitive, larger by season and regional impact, and air content is high.
Comparatively, sulfamate high-effective water-reducing agent is a kind of mononuclear aromatics high efficiency water reducing agent, mainly by p-aminophenyl
Sulfonic acid, mononuclear aromatics derivative phenol compound and formaldehyde are condensed under acid or alkaline conditions, and sulfamate subtracts
Although aqua is a kind of high efficiency water reducing agent, but be that its structure has certain side chain with the maximum difference of other water-reducing agents, absorption
Mode is also similar with polycarboxylate water-reducer, mostly the modes such as flute profile, wire type, rather than the Planar adsorbent of other high efficiency water reducing agents,
Thus have many advantages, such as water-reducing rate height, workability of concrete and durability can be improved.But opposite its side chain of polycarboxylate water-reducer is long
Water retention property is poor when degree causes it to be applied to concrete compared with short-range missile, is easy bleeding；Therefore, exploitation has water-reducing rate height, bleeding rate low
Novel sulfamic acid salt water-reducing agent have a very important significance.
Summary of the invention
It is an object of the invention to overcome prior art defect, a kind of preparation side of modified sulfamate water reducer is provided
Method.
Technical scheme is as follows：
A kind of preparation method of modified sulfamate water reducer, includes the following steps：
(1) aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier and water are added in reaction kettle,
50~70 DEG C are warming up to, then stirring and dissolving is added alkaline conditioner and adjusts pH to 8~9；Above-mentioned aminobenzenesulfonic acid or aminobenzene
Sulfonate is p-aminobenzene sulfonic acid or its sodium salt, 4- amino -1,3- phenyl disulfonic acid or its sodium salt and 4- acetylamino benzene sulfonic acid
Or one or both of its sodium salt, above-mentioned phenolic compound are phenol, bisphenol-A, bisphenol S, paracresol, metacresol and isophthalic two
At least one of phenol, above-mentioned mixed modifier are changed by second that the first modifying agent and molecular weight that molecular weight is 600 are 1200
Property agent composition, and the structural formula of the first modifying agent and the second modifying agent is
(2) step (1) resulting material is continuously heating to 70~80 DEG C, starts that condensing agent is slowly added dropwise, in being dripped in 2h
It is complete, while 70~80 DEG C are maintained the temperature at, it is warming up to 80~90 DEG C after being added dropwise, keeps the temperature 3~4h；The dropwise addition of above-mentioned condensing agent
In three times, the condensing agent of first time dropwise addition 25~40%, the time being added dropwise for the first time are 35~45min, dropwise addition 30 for the second time~
50% condensing agent, second time being added dropwise was 35~45min, was added dropwise remaining condensing agent for the third time, and remaining is the
Time for adding three times；Above-mentioned condensing agent is one or both of formaldehyde, acetaldehyde and furfural；
(3) reaction terminating agent and water are added into step (2) resulting material, is continuously heating to 80~90 DEG C, then protects
1.5~2.5h of temperature；
(4) step (3) resulting material is cooled to room temperature, adjust pH to 7~8 to get.
In a preferred embodiment of the invention, the alkaline conditioner is sodium hydroxide and/or potassium hydroxide.
In a preferred embodiment of the invention, the reaction terminating agent be sodium hydrogensulfite, sodium pyrosulfite and
At least one of sodium sulfite.
In a preferred embodiment of the invention, in the step (3), the mass ratio of reaction terminating agent and water is 7
~10: 40.
In a preferred embodiment of the invention, the mass ratio of first modifying agent and the second modifying agent is 2~5
: 2~5.
It is further preferred that the aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier, water and
The mass ratio of condensing agent is 40~65: 28~52: 15~35: 200: 50~90.
Still more preferably, the aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier, water
And the mass ratio of condensing agent is 40~60: 30~50: 15~30: 200: 50~85.
Still further preferably, the aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier, water
And the mass ratio of condensing agent is 45~60: 30~45: 16~28: 200: 55~85.
The beneficial effects of the invention are as follows：
1, the present invention is by introducing modifying agent and phenolic compound, condensing agent and aminobenzenesulfonic acid/amino phenyl sulfonyl hydrochlorate etc.
Polynary polycondensation forms the network molecular structure with highly branched chain, and diminishing agent molecule spatially adsorbs in cement particle surface, makes
Concrete has good dispersibility and dispersion holding capacity.
2, the modifying agent introduced in the present invention has different molecular weight, and being formed by polynary polycondensation has different length
Side chain, the combination of long short-side chain can increase space steric effect, improve the mobility of concrete, while the modification introduced
The methoxyl group of agent side chain terminal has hydrophobicity, can significantly improve the bleeding of concrete.
3, the present invention adsorbs sulfamate using cheap sodium hydrogensulfite/sodium pyrosulfite/sodium sulfite etc.
Formaldehyde in high performance water-reducer can prevent the continuation of polycondensation reaction, avoid water-reducing agent molecular weight excessive, properties of product is caused to drop
It is low, moreover it is possible to reduce the pollution to environment.
4, the present invention adjusts the sequential structure of sulfamate water reducer molecule by control condensing agent rate of addition, from
And the polycondensation product with differentiation molecular structure is obtained, the bleeding of concrete can be improved.
5, simple production process of the present invention, with short production cycle, reaction temperature is mild, production operation is controllable, and product quality is steady
It is fixed.
Specific embodiment
Technical solution of the present invention is further explained and described below by way of specific embodiment.
In following embodiments, modifying agent is modified by second that the first modifying agent and molecular weight that molecular weight is 600 are 1200
Agent composition, and the structural formula of the first modifying agent and the second modifying agent is
Embodiment 1
A kind of preparation method of modified sulfamate water reducer, includes the following steps：
(1) in parts by mass, 50 parts of sodium sulfanilates, 30 parts of phenol, first that 8 parts of molecular weight are 600 are modified
Agent, the second modifying agent that 20 parts of molecular weight are 1200 and 200 parts of water are added in reaction kettles, are warming up to 50~70 DEG C, stirring and dissolving,
About 5 parts of sodium hydroxide solution regulation system pH value are added to 8~9；
(2) 70 DEG C are continuously heating to, 85 parts of acetaldehyde are slowly added dropwise, total time for adding is 2h, and time for adding is divided into trisection,
The mass percent 40%, 35% being successively added dropwise drips off in 25%, 2h, and maintains the temperature at 70~80 DEG C；It is risen after being added dropwise to complete
High-temperature keeps the temperature 4h to 80 DEG C；
(3) after keeping the temperature, 40 parts of water and 10 parts of sodium sulfites are added, are continuously heating to 80~90 DEG C, keep the temperature 1h；
(4) it is cooled to room temperature, the pH value of adding sodium hydroxide solution regulation system arrives product to 10~12.
Embodiment 2
A kind of preparation method of modified sulfamate water reducer, includes the following steps：
(1) in parts by mass, by 35 parts of p-aminobenzene sulfonic acid, 20 parts of 4- amino -1,3- phenyl sodium disulfonates, 40 parts of bis-phenols
S, reaction kettles are added in the second modifying agent and 200 parts of water that 8 parts of molecular weight are 600 the first modifying agent, 8 parts of molecular weight are 1200
In, 50~70 DEG C are warming up to, about 4 parts of potassium hydroxide solution regulation system pH value are added to 8~9 in stirring and dissolving；
(2) 70 DEG C are continuously heating to, 55 parts of formaldehyde are slowly added dropwise, total time for adding is 2h, and time for adding is divided into trisection,
The mass percent 30%, 50% being successively added dropwise drips off in 20%, 2h, and maintains the temperature at 70~80 DEG C；It is risen after being added dropwise to complete
High-temperature keeps the temperature 3h to 90 DEG C；
(3) after keeping the temperature, 40 parts of water and 6 parts of sodium pyrosulfites are added, are continuously heating to 80~90 DEG C, keep the temperature 1h；
(4) it is cooled to room temperature, adds the pH value of potassium hydroxide solution regulation system to 10~12 to get to product.
Embodiment 3
A kind of preparation method of modified sulfamate water reducer, includes the following steps：
(1) in parts by mass, 45 parts of p-aminobenzene sulfonic acid, 45 parts of paracresol, first that 15 parts of molecular weight are 600 are modified
Agent, the second modifying agent that 10 parts of molecular weight are 1200 and 200 parts of water are added in reaction kettles, are warming up to 50~70 DEG C, stirring and dissolving,
About 5 parts of sodium hydroxide solution regulation system pH value are added to 8~9；
(2) 70 DEG C are continuously heating to, 60 parts of formaldehyde are slowly added dropwise, total time for adding is 2h, and time for adding is divided into trisection,
The mass percent 40%, 45% being successively added dropwise drips off in 15%, 2h, and maintains the temperature at 70~80 DEG C；It is risen after being added dropwise to complete
High-temperature keeps the temperature 4h to 90 DEG C；
(3) after keeping the temperature, 40 parts of water and 8 parts of anti-sodium hydrogensulfites are added, are continuously heating to 80~90 DEG C, keep the temperature 1h；
(4) it is cooled to room temperature, the pH value of adding sodium hydroxide solution regulation system arrives product to 10~12.
Embodiment 4
A kind of preparation method of modified sulfamate water reducer, includes the following steps：
(1) in parts by mass, by 40 parts of sodium sulfanilates, 20 parts of 4- acetylamino benzene sulfonic acids, 15 parts of bisphenol-As, 20
The second modifying agent and 200 parts of water that the first modifying agent that part phenol, 20 parts of molecular weight are 600,5 parts of molecular weight are 1200 are added anti-
It answers in kettle, is warming up to 50~70 DEG C, about 4 parts of sodium hydroxide solution regulation system pH value are added to 8~9 in stirring and dissolving；
(2) 70 DEG C are continuously heating to, 75 parts of condensing agent (25 parts of furfurals, 50 parts of formaldehyde) are slowly added dropwise, total time for adding is
2h, time for adding are divided into trisection, the mass percent 35%, 40% being successively added dropwise, and drip off in 25%, 2h, and keep temperature
At 70~80 DEG C；Temperature is increased after being added dropwise to complete to 85 DEG C, keeps the temperature 3.5h；
(3) after keeping the temperature, 40 parts of water and 7 parts of sodium hydrogensulfites are added, are continuously heating to 80~90 DEG C, keep the temperature 1h；
(4) it is cooled to room temperature, the pH value of adding sodium hydroxide solution regulation system arrives product to 10~12.
Modified sulfamate water reducer obtained by embodiment 1 to embodiment 4 is tested：Examples 1 to 4 is closed
It at obtained sample, is compared with commercially available sulfamate water reducer ASP, (rolls over solid volume using standard cement and press cementaceous
The 0.35% of amount), according to GB 8076~2008《Concrete admixture》High efficiency water reducing agent detection method surveys its concrete diminishing
Rate and normal pressure bleeding rate ratio.Concrete mix is：Cement 330kg/m3, sand 742kg/m3, stone 1113kg/m3, under acquired results
Shown in table.
1 reference cement test result of table
| Sample | Comparative sample ASP | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Bleeding rate/% | 25.3 | 27.8 | 29.2 | 28.8 | 27.5 |
| Normal pressure bleeding rate ratio/% | 22.6 | 12.4 | 11.7 | 10.5 | 9.8 |
It can be seen that from above-mentioned experimental result, modified sulfamate water reducer water-reducing rate with higher prepared by the present invention
And lower bleeding rate.
Those of ordinary skill in the art it is found that when technical parameter and raw material components of the invention changes in following ranges,
It remains to access same as the previously described embodiments or similar technical effect, still belong to and protection scope of the present invention：
A kind of preparation method of modified sulfamate water reducer, includes the following steps：
(1) aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier and water are added in reaction kettle,
50~70 DEG C are warming up to, then stirring and dissolving is added alkaline conditioner and adjusts pH to 8~9；Above-mentioned aminobenzenesulfonic acid or aminobenzene
Sulfonate is p-aminobenzene sulfonic acid or its sodium salt, 4- amino -1,3- phenyl disulfonic acid or its sodium salt and 4- acetylamino benzene sulfonic acid
Or one or both of its sodium salt, above-mentioned phenolic compound are phenol, bisphenol-A, bisphenol S, paracresol, metacresol and isophthalic two
At least one of phenol, above-mentioned mixed modifier are changed by second that the first modifying agent and molecular weight that molecular weight is 600 are 1200
Property agent composition, and the structural formula of the first modifying agent and the second modifying agent is
(2) step (1) resulting material is continuously heating to 70~80 DEG C, starts that condensing agent is slowly added dropwise, in being dripped in 2h
It is complete, while 70~80 DEG C are maintained the temperature at, it is warming up to 80~90 DEG C after being added dropwise, keeps the temperature 3~4h；The dropwise addition of above-mentioned condensing agent
In three times, the condensing agent of first time dropwise addition 25~40%, the time being added dropwise for the first time are 35~45min, dropwise addition 30 for the second time~
50% condensing agent, second time being added dropwise was 35~45min, was added dropwise remaining condensing agent for the third time, and remaining is the
Time for adding three times；Above-mentioned condensing agent is one or both of formaldehyde, acetaldehyde and furfural；
(3) reaction terminating agent and water are added into step (2) resulting material, is continuously heating to 80~90 DEG C, then protects
1.5~2.5h of temperature；
(4) step (3) resulting material is cooled to room temperature, adjust pH to 7~8 to get.
The alkaline conditioner is sodium hydroxide and/or potassium hydroxide.The reaction terminating agent is sodium hydrogensulfite, Jiao Ya
At least one of sodium sulphate and sodium sulfite.The mass ratio of first modifying agent and the second modifying agent is 2~5: 2~5.
The aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier, water and condensing agent mass ratio
It is 40~65: 28~52: 15~35: 200: 50~90.Preferably, the aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenol generalization
The mass ratio for closing object, mixed modifier, water and condensing agent is 40~60: 30~50: 15~30: 200: 50~85.
The foregoing is only a preferred embodiment of the present invention, the range that the present invention that therefore, it cannot be limited according to is implemented, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.
Claims (8)
1. a kind of preparation method of modified sulfamate water reducer, it is characterised in that：Include the following steps：
(1) aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier and water are added in reaction kettle, heating
To 50~70 DEG C, then stirring and dissolving is added alkaline conditioner and adjusts pH to 8~9；Above-mentioned aminobenzenesulfonic acid or aminobenzenesulfonic acid
Salt be p-aminobenzene sulfonic acid or its sodium salt, 4- amino -1,3- phenyl disulfonic acid or its sodium salt and 4- acetylamino benzene sulfonic acid or its
One or both of sodium salt, above-mentioned phenolic compound are in phenol, bisphenol-A, bisphenol S, paracresol, metacresol and resorcinol
At least one, the second modifying agent that above-mentioned mixed modifier is 1200 by the first modifying agent and molecular weight that molecular weight is 600
Composition, and the structural formula of the first modifying agent and the second modifying agent is
(2) step (1) resulting material is continuously heating to 70~80 DEG C, starts that condensing agent is slowly added dropwise, in being dripped off in 2h, together
When maintain the temperature at 70~80 DEG C, be warming up to 80~90 DEG C after being added dropwise, keep the temperature 3~4h；The dropwise addition of above-mentioned condensing agent point three
Secondary, the condensing agent of dropwise addition 25~40%, the time being added dropwise for the first time are 35~45min, second of dropwise addition 30~50% for the first time
Condensing agent, second time being added dropwise was 35~45min, remaining condensing agent was added dropwise for the third time, remaining is third time
Time for adding；Above-mentioned condensing agent is one or both of formaldehyde, acetaldehyde and furfural；
(3) reaction terminating agent and water are added into step (2) resulting material, is continuously heating to 80~90 DEG C, then keeps the temperature 1.5
~2.5h；
(4) step (3) resulting material is cooled to room temperature, adjust pH to 7~8 to get.
2. preparation method as described in claim 1, it is characterised in that：The alkaline conditioner is sodium hydroxide and/or hydrogen-oxygen
Change potassium.
3. preparation method as described in claim 1, it is characterised in that：The reaction terminating agent is sodium hydrogensulfite, burnt sulfurous
At least one of sour sodium and sodium sulfite.
4. preparation method as described in claim 1, it is characterised in that：In the step (3), the quality of reaction terminating agent and water
Than being 7~10: 40.
5. preparation method as described in claim 1, it is characterised in that：The mass ratio of first modifying agent and the second modifying agent
It is 2~5: 2~5.
6. the preparation method as described in any claim in claim 1 to 5, it is characterised in that：The aminobenzenesulfonic acid or
Amino phenyl sulfonyl hydrochlorate, phenolic compound, mixed modifier, water and condensing agent mass ratio be 40~65: 28~52: 15~35:
200: 50~90.
7. preparation method as claimed in claim 6, it is characterised in that：The aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenols
Compound, mixed modifier, water and condensing agent mass ratio be 40~60: 30~50: 15~30: 200: 50~85.
8. preparation method as claimed in claim 7, it is characterised in that：The aminobenzenesulfonic acid or amino phenyl sulfonyl hydrochlorate, phenols
Compound, mixed modifier, water and condensing agent mass ratio be 45~60: 30~45: 16~28: 200: 55~85.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851221.8A CN108911559B (en) | 2018-07-27 | 2018-07-27 | Preparation method of modified sulfamate water reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851221.8A CN108911559B (en) | 2018-07-27 | 2018-07-27 | Preparation method of modified sulfamate water reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108911559A true CN108911559A (en) | 2018-11-30 |
| CN108911559B CN108911559B (en) | 2020-11-27 |
Family
ID=64419185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810851221.8A Active CN108911559B (en) | 2018-07-27 | 2018-07-27 | Preparation method of modified sulfamate water reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108911559B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341571A (en) * | 2001-09-29 | 2002-03-27 | 华南理工大学 | Aminosulfonic acid series high-effective water-reducing agent and its preparation method |
| CN101050081A (en) * | 2006-04-07 | 2007-10-10 | 武汉市保立化学品有限责任公司 | High performance water reducing agent in new type comb shaped molecular structure |
| CN101624358A (en) * | 2009-08-03 | 2010-01-13 | 常州汇迪建材有限公司 | Preparation method of sulfamate water reducing agent |
| CN103113037A (en) * | 2013-01-22 | 2013-05-22 | 科之杰新材料集团有限公司 | Low-cost low-bleeding sulfamate high-efficiency water reducing agent and preparation method thereof |
| CN108250447A (en) * | 2016-12-28 | 2018-07-06 | 江苏苏博特新材料股份有限公司 | Polyether modified amino sulfonate high efficiency water reducing agent, preparation method and application |
-
2018
- 2018-07-27 CN CN201810851221.8A patent/CN108911559B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341571A (en) * | 2001-09-29 | 2002-03-27 | 华南理工大学 | Aminosulfonic acid series high-effective water-reducing agent and its preparation method |
| CN101050081A (en) * | 2006-04-07 | 2007-10-10 | 武汉市保立化学品有限责任公司 | High performance water reducing agent in new type comb shaped molecular structure |
| CN101624358A (en) * | 2009-08-03 | 2010-01-13 | 常州汇迪建材有限公司 | Preparation method of sulfamate water reducing agent |
| CN103113037A (en) * | 2013-01-22 | 2013-05-22 | 科之杰新材料集团有限公司 | Low-cost low-bleeding sulfamate high-efficiency water reducing agent and preparation method thereof |
| CN108250447A (en) * | 2016-12-28 | 2018-07-06 | 江苏苏博特新材料股份有限公司 | Polyether modified amino sulfonate high efficiency water reducing agent, preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108911559B (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105645823A (en) | Low-addition-amount environment-friendly alkali-free chlorine liquid accelerator and preparation method thereof | |
| CN101508536B (en) | modified aliphatic water reducing agent and preparation method | |
| CN101328037B (en) | Alkali lignose concrete air-leading water-reducing agent, preparation and use thereof | |
| CN105924592B (en) | Viscosity-reducing polycarboxylic acid water reducer and preparation method thereof | |
| CN105694739B (en) | A kind of inorganic adhesive of magnesium system and preparation method thereof that stalk is modified with silicone acrylic emulsion | |
| CN109400869B (en) | Polystyrylphenol polyoxyethylene ether sulfate dispersing agent and preparation method and application thereof | |
| CN104230204B (en) | A kind of preparation method of collapse protection type aliphatic water reducing agent | |
| CN105778024B (en) | A kind of preparation method of oil waste phenol dregs modified sulfamate high-effective water-reducing agent | |
| CN106117482A (en) | A kind of modified high-thin arch dam naphthalene water reducer and preparation method thereof | |
| CN103804617A (en) | Phenol modified water reducing agent | |
| CN111548050A (en) | Concrete segregation-resistant water reducing agent and preparation method thereof | |
| CN102304211B (en) | Sulfonated melamine-formaldehyde polycondensate water reducer and preparation method thereof | |
| CN105712865B (en) | Solid citric acid aluminum crosslinker, preparation method and its application | |
| CN100453493C (en) | Method for preparing modified lignin poly-carboxylic-acid cement dispersant | |
| CN110028642A (en) | A kind of sulfamate polymeric dispersant and preparation method thereof and its application in ceramic slurries | |
| CN108911559A (en) | A kind of preparation method of modified sulfamate water reducer | |
| CN109468123B (en) | Environment-friendly polymer micro-nano material for drilling fluid and preparation method thereof | |
| CN106046275B (en) | A kind of ceramic water reducing agent and preparation method thereof with green body enhancing effect | |
| CN112125564A (en) | Naphthalene water reducer | |
| CN103965417A (en) | Lignin sulfonate modified aminosulfonic acid series efficient water reducer and preparation method thereof | |
| CN108864389A (en) | A kind of preparation method of viscosity reduction type sulfamate water reducer | |
| CN110776603A (en) | Preparation method of polycarboxylic acid mud-resistant water reducer synthesized by sodium lignosulfonate | |
| CN102321229B (en) | Modified sulfonated melamine-formaldehyde condensation polymer water reducing agent and preparation method thereof | |
| CN102745936A (en) | Oxidized lignosulfonate-aliphatic copolymer efficient water reducer and preparation method thereof | |
| CN104530325B (en) | A kind of preparation method of high-performance polycarboxylic acids water reducing agent |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |