CN106397281A - Dye dispersing agent production method - Google Patents
Dye dispersing agent production method Download PDFInfo
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- CN106397281A CN106397281A CN201510452258.XA CN201510452258A CN106397281A CN 106397281 A CN106397281 A CN 106397281A CN 201510452258 A CN201510452258 A CN 201510452258A CN 106397281 A CN106397281 A CN 106397281A
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- sulfuric acid
- production method
- sulfur trioxide
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- condensation
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The present invention provides a dye dispersing agent production method, which comprises: adding concentrated sulfuric acid to a naphthalene compound, introducing sulfur trioxide at a temperature of not higher than 90 DEG C, carry out a reaction, increasing the temperature of the reaction system to 140-180 DEG C, carrying out thermal insulation, carrying out a reaction, adding formaldehyde, carrying out condensation, and adding an alkali and adjusting the pH value to 6-8 after completing the condensation so as to obtain the dispersing agent, wherein a molar ratio of the naphthalene compound to the sulfuric acid to the sulfur trioxide is 1:(0.3-0.5):(0.8-0.9). According to the present invention, the production method has advantages of simple production process, no environment pollution, sulfuric acid consumption reducing, avoidance of waste residue calcium sulfate generation in the traditional process, and green environmental protection; and particularly the obtained dispersing agent has characteristics of good heat-resistant stability, good whiteness staining, and short sanding time.
Description
Technical field
The present invention relates to a kind of production method of dye dispersant.
Background technology
Dispersant is disperse dyes and a kind of the most frequently used dye dispersant of reducing dye in the world, due to
It has good dispersion effect, and cheap and gain great popularity.
Publication No. CN101376639A discloses a kind of method that new process for sulfonation produces dispersant,
It includes, and adds the sulfuric acid of concentration more than 95%, be passed through sulfur trioxide and carry out sulphur in methyl naphthalene raw material
Change reaction；The sulfur dioxide gas alkali liquor absorption that sulfonating reaction produces prepares sodium sulfite；Sulfonation is anti-
Solution after answering adds water regulation to certain condensation acidity, adds formalin to be condensed, contracting
Conjunction is diluted with water after finishing, plus alkali adjusts pH to neutral, obtains dispersant.When described methyl naphthalene is former
When expecting for technical methylnaphthalene, in reaction, the weight of each material compares technical methylnaphthalene：Sulfuric acid：Sulfur trioxide：
Formaldehyde=1：0.35～0.40：0.35～0.40：0.15～0.20；Described methyl naphthalene raw material is to wash
When oily, in reaction, the weight of each material compares technical methylnaphthalene：Sulfuric acid：Sulfur trioxide：Formaldehyde=0.9：
0.35～0.40：0.35～0.40：0.15～0.20.However, the product of this technique productions is heat-resisting steady
Qualitative and whiteness staining and dispersant the sand milling time still leaves some room for improvement.
Content of the invention
In order to solve the problems of the prior art, the invention provides a kind of producer of dye dispersant
Method, by reducing the consumption of the concentrated sulfuric acid and adjusting the ratio of each material, can obtain white staining good with
Sand milling time short dye dispersant, thus obtain the present invention.
The invention provides a kind of production method of dye dispersant, including:Naphthalene series compound adds
The concentrated sulfuric acid, is passed through sulfur trioxide at a temperature of not higher than 90 DEG C and is reacted, then by reaction system
Temperature be increased to 140～180 DEG C, insulation reacted, be subsequently adding formaldehyde and be condensed, condensation
Add alkali to adjust pH value to 6～8 after finishing, obtain dispersant, wherein, with molar ratio computing, described
Naphthalene series compound：Sulfuric acid：Sulfur trioxide=1：(0.3～0.5)：(0.8～0.9).
As a further improvement on the present invention, described naphthalene series compound is that technical methylnaphthalene, industry are washed
The mixture of oil, crude naphthalene or any two kinds.
As a further improvement on the present invention, described concentrated sulfuric acid concentration is 98%.
As a further improvement on the present invention, naphthalene series compound adds the concentrated sulfuric acid, not higher than
It is passed through sulfur trioxide at a temperature of 90 DEG C to be reacted, then the temperature of reaction system is increased to
180 DEG C, insulation is reacted, and is subsequently adding formaldehyde and is condensed, and condensation adds alkali to adjust after finishing
PH value, to 7, obtains dispersant, wherein, with molar ratio computing, described naphthalene series compound：Sulfuric acid：Three
Sulfur oxide=1：0.5：0.8.
The invention has the beneficial effects as follows：Simple production process, free from environmental pollution, reduce the use of sulfuric acid
Amount, it is to avoid the generation of the waste residues calcium sulfate in traditional handicraft, has reached the purpose of environmental protection.Special
It is not that the dispersant heat-resistant stability of gained of the present invention and whiteness staining are good, the sand milling time of dispersant
Short.
Specific embodiment
The invention discloses a kind of production method of dye dispersant, including:Naphthalene series compound adds
The concentrated sulfuric acid, is passed through sulfur trioxide at a temperature of not higher than 90 DEG C and is reacted, then by reaction system
Temperature be increased to 140～180 DEG C, insulation reacted, be subsequently adding formaldehyde and be condensed, condensation
Add alkali to adjust pH value to 6～8 after finishing, obtain dispersant, wherein, with molar ratio computing, described
Naphthalene series compound：Sulfuric acid：Sulfur trioxide=1：(0.3～0.5)：(0.8～0.9).
As a further improvement on the present invention, described naphthalene series compound is that technical methylnaphthalene, industry are washed
The mixture of oil, crude naphthalene or any two kinds.
As a further improvement on the present invention, described concentrated sulfuric acid concentration is 98%.
As a further improvement on the present invention, naphthalene series compound adds the concentrated sulfuric acid, not higher than
It is passed through sulfur trioxide at a temperature of 90 DEG C to be reacted, then the temperature of reaction system is increased to
180 DEG C, insulation is reacted, and is subsequently adding formaldehyde and is condensed, and condensation adds alkali to adjust after finishing
PH value, to 7, obtains dispersant, wherein, with molar ratio computing, described naphthalene series compound：Sulfuric acid：Three
Sulfur oxide=1：0.5：0.8.
Above content is made for the present invention further specifically with reference to specific preferred embodiment
Bright it is impossible to assert the present invention be embodied as be confined to these explanations.The affiliated technology for the present invention
For the those of ordinary skill in field, without departing from the inventive concept of the premise, if can also make
Do simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. a kind of production method of dye dispersant it is characterised in that：Including:Naphthalene series compound adds
The concentrated sulfuric acid, is passed through sulfur trioxide at a temperature of not higher than 90 DEG C and is reacted, and then will react
The temperature of system is increased to 140～180 DEG C, and insulation is reacted, and is subsequently adding formaldehyde and is contracted
Close, condensation finish after add alkali adjust pH value to 6～8, obtain dispersant, wherein, with mole
Ratio meter, described naphthalene series compound：Sulfuric acid：Sulfur trioxide=1：(0.3～0.5)：(0.8～0.9).
2. dye dispersant according to claim 1 production method it is characterised in that：Described naphthalene
Based compound is the mixture of technical methylnaphthalene, industrial washing oil, crude naphthalene or any two kinds.
3. dye dispersant according to claim 1 production method it is characterised in that：Described dense sulphur
Acid concentration is 98%.
4. dye dispersant according to claim 1 production method it is characterised in that：In naphthalene system
Add the concentrated sulfuric acid in compound, be passed through sulfur trioxide at a temperature of not higher than 90 DEG C and reacted,
Then the temperature of reaction system is increased to 180 DEG C, insulation is reacted, and is subsequently adding formaldehyde and enters
Row condensation, condensation adds alkali to adjust pH value to 7 after finishing, obtain dispersant, wherein, to rub
You count ratio, described naphthalene series compound：Sulfuric acid：Sulfur trioxide=1：0.5：0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510452258.XA CN106397281A (en) | 2015-07-28 | 2015-07-28 | Dye dispersing agent production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510452258.XA CN106397281A (en) | 2015-07-28 | 2015-07-28 | Dye dispersing agent production method |
Publications (1)
| Publication Number | Publication Date |
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| CN106397281A true CN106397281A (en) | 2017-02-15 |
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| CN201510452258.XA Pending CN106397281A (en) | 2015-07-28 | 2015-07-28 | Dye dispersing agent production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948787A (en) * | 2018-08-30 | 2018-12-07 | 浙江嘉成化工有限公司 | dye dispersant and preparation method thereof |
| CN112574072A (en) * | 2020-11-20 | 2021-03-30 | 安徽鑫固环保股份有限公司 | Method for synthesizing dispersant by using acid tar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997576A (en) * | 1974-04-22 | 1976-12-14 | Lion Fat & Oil Co., Ltd. | Method for preparation of α-sulfofatty acid ester |
| US4035338A (en) * | 1974-06-21 | 1977-07-12 | Ube Industries, Ltd. | Method of stabilizing oxymethylene copolymers |
| CN101376639A (en) * | 2008-09-28 | 2009-03-04 | 浙江闰土股份有限公司 | Method for coproduction of dispersants MF and sodium sulphite |
| CN102746196A (en) * | 2012-07-17 | 2012-10-24 | 浙江闰土股份有限公司 | Sulfonating technique for producing dye dispersant MF (melamine-formaldehyde) |
-
2015
- 2015-07-28 CN CN201510452258.XA patent/CN106397281A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997576A (en) * | 1974-04-22 | 1976-12-14 | Lion Fat & Oil Co., Ltd. | Method for preparation of α-sulfofatty acid ester |
| US4035338A (en) * | 1974-06-21 | 1977-07-12 | Ube Industries, Ltd. | Method of stabilizing oxymethylene copolymers |
| CN101376639A (en) * | 2008-09-28 | 2009-03-04 | 浙江闰土股份有限公司 | Method for coproduction of dispersants MF and sodium sulphite |
| CN102746196A (en) * | 2012-07-17 | 2012-10-24 | 浙江闰土股份有限公司 | Sulfonating technique for producing dye dispersant MF (melamine-formaldehyde) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948787A (en) * | 2018-08-30 | 2018-12-07 | 浙江嘉成化工有限公司 | dye dispersant and preparation method thereof |
| CN112574072A (en) * | 2020-11-20 | 2021-03-30 | 安徽鑫固环保股份有限公司 | Method for synthesizing dispersant by using acid tar |
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Application publication date: 20170215 |
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