CN108456289A - A kind of synthesis technology of aliphatic water reducing agent - Google Patents
A kind of synthesis technology of aliphatic water reducing agent Download PDFInfo
- Publication number
- CN108456289A CN108456289A CN201810141307.1A CN201810141307A CN108456289A CN 108456289 A CN108456289 A CN 108456289A CN 201810141307 A CN201810141307 A CN 201810141307A CN 108456289 A CN108456289 A CN 108456289A
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- Prior art keywords
- sodium sulfite
- formaldehyde
- water
- acetone
- reducing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G6/00—Condensation polymers of aldehydes or ketones only
- C08G6/02—Condensation polymers of aldehydes or ketones only of aldehydes with ketones
-
- 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
- C04B24/166—Macromolecular compounds comprising sulfonate or sulfate groups obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of synthesis technology of aliphatic water reducing agent, including acetone, formaldehyde, sodium sulfite and water, the acetone, formaldehyde, sodium sulfite and water molar ratio be followed successively by：Acetone is 99.9%：Formaldehyde is 36.8% 37.5%：Sodium sulfite is 40% 85%：Water is 100：275‑295：320‑150：470‑300；Specifically synthesis technology is：Step 1：Feeding；Step 2：It puts into production and uses water, put into by-product sodium sulfite, hydrolysis 0.5 1 hours, pH value is surveyed in sampling, and PH is preferred more than or equal to 9.5, and due to containing other chemical analysis in by-product sodium sulfite, appropriate piece alkali is added in PH when being less than 9.5 or liquid caustic soda is adjusted；Step 3：Acetone sulfonating reaction is added about 0.5 hour；Step 4：Formaldehyde is added dropwise stage by stage and carries out condensation reaction within 2.5 3 hours；Step 5：It is added dropwise after the completion of formaldehyde, heat preservation condensation 2.5 3 hours is carried out between 95 degree 98 degree.Raw material carried out by the by-product sodium sulfite of output reduce cost when the aliphatic of the technique selects production paracresol, 2 naphthols, sodium hydrosulfite, sulfur dioxide recovery in synthesis.
Description
Technical field
The present invention relates to a kind of aliphatic water reducing agents, and in particular to a kind of synthesis technology of aliphatic water reducing agent.
Background technology
The water-reducing effect that existing aliphatic water reducing agent has been wanted need to do raw material ability with the sodium sulfite of effect high-content
The good product of output means to imitate high cost of material using the sodium sulfite of high-content.Existing aliphatic water reducing agent wants drop
Low cost can use the sodium sulfite of low content, and when such as using the sodium sulfite produciton of low content, product water-reducing effect is bad；
Or when using content unstable sodium sulfite, because production aliphatic water reducing agent has rational chemical molar ratio, this is just
Mean high production risk, it is easy to which output waste material causes the pollution of environment, causes the economic loss of bigger.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of synthesis technology of aliphatic water reducing agent, from
And it solves the above problems.
In order to solve the above technical problem, the present invention provides the following technical solutions：
The present invention provides a kind of synthesis technology of aliphatic water reducing agent, including acetone, formaldehyde, sodium sulfite and water, institutes
The molar ratio for stating acetone, the formaldehyde, the sodium sulfite and the water is followed successively by：The acetone is 99.9%：The formaldehyde
For 36.8%-37.5%：The sodium sulfite is 40%-85%：The water is 100：275-295：320-150：470-300；
Specifically synthesis technology is：
Step 1：Feeding：The acetone (99.9%)：The formaldehyde (36.8%-37.5%)：The sodium sulfite
(40%-85%)：Water=100：(275-295)：(320-150)：(470-300)
Step 2：It puts into production and uses water, put into by-product sodium sulfite, hydrolysis 0.5-1 hours, pH value is surveyed in sampling, and PH is big
It is preferred in equal to 9.5, due to containing other chemical analysis in by-product sodium sulfite, appropriate piece alkali or liquid is added when being less than 9.5 in PH
Alkali is adjusted；
Step 3：Acetone sulfonating reaction is added about 0.5 hour；
Step 4：Formaldehyde is added dropwise stage by stage and carries out condensation reaction within 2.5-3 hours；
Step 5：It is added dropwise after the completion of formaldehyde, heat preservation condensation 2.5-3 hours is carried out between being spent at 95 degree -98.
As a preferred technical solution of the present invention, the piece alkali in the step 2 is without increasing storage facilities, but liquid caustic soda
Cost effect is low, if having the process of button water and moisturizing using liquid caustic soda；The sodium sulfite of by-product is adjusted for producing aliphatic water reducing agent
The pH value of the sodium sulfite solution after water-saving solution, can improve product quality.
As a preferred technical solution of the present invention, the acetone is simplest saturated ketone；It is a kind of water white transparency
Liquid is the representative compound of aliphatic ketone, the typical reaction with ketone；It is formed with the sodium hydrogensulfite
The addition product of colourless crystallization.
As a preferred technical solution of the present invention, the sodium sulfite easy-weathering and is oxidized to sulfuric acid in air
Sodium；It is thermally decomposed and generates vulcanized sodium and sodium sulphate, contacted with strong acid and resolve into corresponding salt and release sulfur dioxide；It is described
Sodium sulfite reproducibility is extremely strong, and it is cuprous ion that can restore copper ion.
As a preferred technical solution of the present invention, the formaldehyde has strong reducing action, especially in alkaline solution；
The formaldehyde can dehydrogenation or oxidation be made under the metal catalytics such as silver, copper by methanol, can also be separated by hydrocarbon oxidation product；Liquid
Storage is easily muddy long when colder, and metaformaldehyde precipitation is then formed in low temperature.
The advantageous effect that is reached of the present invention is：The device is a kind of synthesis technology of aliphatic water reducing agent, the technique
The by-product sodium sulfite institute of output when aliphatic selects production paracresol, beta naphthal, sodium hydrosulfite, sulfur dioxide recovery in synthesis
Cost is reduced for raw material；When by-product sodium sulfite is used to produce water-reducing agent, the water-reducing agent quality of output differs, beta naphthal,
The by-product effect of sodium hydrosulfite is preferred, and when by-product sodium sulfite production aliphatic water reducing agent is ineffective, is added a certain proportion of
Alkali after the pH value for improving sodium sulfite solution, then is synthesized, can be obviously improved product quality.This technique can be used largely
The sodium sulfite of by-product reduces production cost.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1
The present invention provides a kind of synthesis technology of aliphatic water reducing agent, including acetone, formaldehyde, sodium sulfite and water, described
Acetone, formaldehyde, sodium sulfite and water molar ratio be followed successively by：Acetone is 99.9%：Formaldehyde is 36.8%-37.5%：Sulfurous acid
Sodium is 40%-85%：Water is 100：275-295：320-150：470-300；Specifically synthesis technology is：
Step 1：Feeding：Acetone (99.9%)：Formaldehyde (36.8%-37.5%)：Sodium sulfite (40%-85%)：Water=
100：(275-295)：(320-150)：(470-300)
Step 2：It puts into production and uses water, put into by-product sodium sulfite, hydrolysis 0.5-1 hours, pH value is surveyed in sampling, and PH is big
It is preferred in equal to 9.5, due to containing other chemical analysis in by-product sodium sulfite, appropriate piece alkali or liquid is added when being less than 9.5 in PH
Alkali is adjusted；
Step 3：Acetone sulfonating reaction is added about 0.5 hour；
Step 4：Formaldehyde is added dropwise stage by stage and carries out condensation reaction within 2.5-3 hours；
Step 5：It is added dropwise after the completion of formaldehyde, heat preservation condensation 2.5-3 hours is carried out between being spent at 95 degree -98.
Piece alkali in step 2 is without increasing storage facilities, but liquid caustic soda cost effect is low, if having button water and moisturizing using liquid caustic soda
Process；The sodium sulfite of by-product adjusts the pH value of the sodium sulfite solution after hydrolysis for producing aliphatic water reducing agent, can be with
Improve product quality.
Acetone is simplest saturated ketone；It is a kind of colourless transparent liquid, is the representative change of aliphatic ketone
Object is closed, the typical reaction with ketone；The addition product of colourless crystallization is formed with sodium hydrogensulfite.
Sodium sulfite easy-weathering and is oxidized to sodium sulphate in air；It is thermally decomposed and generates vulcanized sodium and sodium sulphate, with
Strong acid contact resolves into corresponding salt and releases sulfur dioxide；Sodium sulfite reproducibility is extremely strong, and it is Asia that can restore copper ion
Copper ion.
Formaldehyde has strong reducing action, especially in alkaline solution；Formaldehyde can be taken off by methanol under the metal catalytics such as silver, copper
Hydrogen or oxidation are made, and can also be separated by hydrocarbon oxidation product；Storage is easily muddy long when colder for liquid, and trimerization is then formed in low temperature
Formaldehyde precipitates.
The invention is a kind of synthesis technology of aliphatic water reducing agent, including acetone, formaldehyde, sodium sulfite and water, described third
Ketone, formaldehyde, sodium sulfite and water molar ratio be followed successively by：Acetone is 99.9%：Formaldehyde is 36.8%-37.5%：Sodium sulfite
For 40%-85%：Water is 100：275-295：320-150：470-300；Specifically synthesis technology is：
Step 1：Feeding：Acetone (99.9%)：Formaldehyde (36.8%-37.5%)：Sodium sulfite (40%-85%)：Water=
100：(275-295)：(320-150)：(470-300)
Step 2：It puts into production and uses water, put into by-product sodium sulfite, hydrolysis 0.5-1 hours, pH value is surveyed in sampling, and PH is big
It is preferred in equal to 9.5, due to containing other chemical analysis in by-product sodium sulfite, appropriate piece alkali or liquid is added when being less than 9.5 in PH
Alkali is adjusted；
Step 3：Acetone sulfonating reaction is added about 0.5 hour；
Step 4：Formaldehyde is added dropwise stage by stage and carries out condensation reaction within 2.5-3 hours；
Step 5：It is added dropwise after the completion of formaldehyde, heat preservation condensation 2.5-3 hours is carried out between being spent at 95 degree -98.
The advantageous effect that is reached of the present invention is：The device is a kind of synthesis technology of aliphatic water reducing agent, the technique
The by-product sodium sulfite institute of output when aliphatic selects production paracresol, beta naphthal, sodium hydrosulfite, sulfur dioxide recovery in synthesis
Cost is reduced for raw material；When by-product sodium sulfite is used to produce water-reducing agent, the water-reducing agent quality of output differs, beta naphthal,
The by-product effect of sodium hydrosulfite is preferred, and when by-product sodium sulfite production aliphatic water reducing agent is ineffective, is added a certain proportion of
Alkali after the pH value for improving sodium sulfite solution, then is synthesized, can be obviously improved product quality.This technique can be used largely
The sodium sulfite of by-product reduces production cost.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of synthesis technology of aliphatic water reducing agent, including acetone, formaldehyde, sodium sulfite and water, which is characterized in that described third
Ketone, the formaldehyde, the sodium sulfite and the water molar ratio be followed successively by：The acetone is 99.9%：The formaldehyde is
36.8%-37.5%：The sodium sulfite is 40%-85%：The water is 100：275-295：320-150：470-300；Tool
The synthesis technology of body is：
Step 1：Feeding：The acetone (99.9%)：The formaldehyde (36.8%-37.5%)：Sodium sulfite (the 40%-
85%)：Water=100：(275-295)：(320-150)：(470-300)
Step 2：It puts into production and uses water, put into by-product sodium sulfite, hydrolysis 0.5-1 hours samples and surveys pH value, and PH is more than etc.
It is preferred in 9.5, due to containing other chemical analysis in by-product sodium sulfite, appropriate piece alkali or liquid caustic soda tune is added when being less than 9.5 in PH
Section；
Step 3：Acetone sulfonating reaction is added about 0.5 hour；
Step 4：Formaldehyde is added dropwise stage by stage and carries out condensation reaction within 2.5-3 hours；
Step 5：It is added dropwise after the completion of formaldehyde, heat preservation condensation 2.5-3 hours is carried out between being spent at 95 degree -98.
2. a kind of synthesis technology of aliphatic water reducing agent according to claim 1, it is characterised in that：In the step 2
Piece alkali is without increasing storage facilities, but liquid caustic soda cost effect is low, if having the process of button water and moisturizing using liquid caustic soda；The sulfurous of by-product
Sour sodium adjusts the pH value of the sodium sulfite solution after hydrolysis, can improve product quality for producing aliphatic water reducing agent.
3. a kind of synthesis technology of aliphatic water reducing agent according to claim 1, it is characterised in that：The acetone is most simple
Single saturated ketone；It is a kind of colourless transparent liquid, is the representative compound of aliphatic ketone, the typical case with ketone
Reaction；The addition product of colourless crystallization is formed with the sodium hydrogensulfite.
4. a kind of synthesis technology of aliphatic water reducing agent according to claim 1, it is characterised in that：The sodium sulfite exists
Easy-weathering and it is oxidized to sodium sulphate in air；It is thermally decomposed and generates vulcanized sodium and sodium sulphate, contacted and resolved into accordingly with strong acid
Salt and release sulfur dioxide；The sodium sulfite reproducibility is extremely strong, and it is cuprous ion that can restore copper ion.
5. a kind of synthesis technology of aliphatic water reducing agent according to claim 1, it is characterised in that：The formaldehyde has strong also
Original work are used, especially in alkaline solution；The formaldehyde can dehydrogenation or oxidation be made under the metal catalytics such as silver, copper by methanol,
Also it can be separated by hydrocarbon oxidation product；Storage is easily muddy long when colder for liquid, and metaformaldehyde precipitation is then formed in low temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810141307.1A CN108456289A (en) | 2018-02-11 | 2018-02-11 | A kind of synthesis technology of aliphatic water reducing agent |
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| CN201810141307.1A CN108456289A (en) | 2018-02-11 | 2018-02-11 | A kind of synthesis technology of aliphatic water reducing agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553326A (en) * | 2018-11-24 | 2019-04-02 | 南京福盛建材有限公司 | A kind of high-thin arch dam aliphatic water reducing agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000351661A (en) * | 1999-04-08 | 2000-12-19 | Nissan Chem Ind Ltd | Cement composition containing sulfanilic acid-modified melamine-formaldehyde resin |
| CN101186459A (en) * | 2007-12-04 | 2008-05-28 | 北京工业大学 | Method for preparing aliphatic high efficiency water reducing agent by using industrial by-product and application thereof |
| CN103113036A (en) * | 2013-03-12 | 2013-05-22 | 南京瑞迪高新技术有限公司 | Modified aliphatic superplasticizer and preparation method thereof |
-
2018
- 2018-02-11 CN CN201810141307.1A patent/CN108456289A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000351661A (en) * | 1999-04-08 | 2000-12-19 | Nissan Chem Ind Ltd | Cement composition containing sulfanilic acid-modified melamine-formaldehyde resin |
| CN101186459A (en) * | 2007-12-04 | 2008-05-28 | 北京工业大学 | Method for preparing aliphatic high efficiency water reducing agent by using industrial by-product and application thereof |
| CN103113036A (en) * | 2013-03-12 | 2013-05-22 | 南京瑞迪高新技术有限公司 | Modified aliphatic superplasticizer and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553326A (en) * | 2018-11-24 | 2019-04-02 | 南京福盛建材有限公司 | A kind of high-thin arch dam aliphatic water reducing agent and preparation method thereof |
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Application publication date: 20180828 |