CN104672467A - Study of taking modified lignosulfonate as dye dispersant modification condition - Google Patents
Study of taking modified lignosulfonate as dye dispersant modification condition Download PDFInfo
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Abstract
The invention relates to a study of taking modified lignosulfonate as a dye dispersant modification condition. According to the study, alkali lignin in papermaking waste liquid is taken as a raw material; the alkali lignin is modified by sulfonating condensation and sulfomethylation under a high-temperature alkaline condition, and then the optimal condition of modifying the dispersant with the lignosulfonate is determined. The system is composed of the following components: 50-100 parts of lignosulfonate, 100-300 parts of deionized water, 30-80 parts of sodium sulfite, 30% of sodium hydroxide aqueous solution and 30% of hydrochloric acid solution, and 40-80 parts of formaldehyde. The specific operating method comprises the following steps: adding the lignosulfonate, the deionized water and sodium sulfite in the mass ratio to a three-neck flask, regulating the temperature and the pH of the system to the conditions, and stirring at a constant temperature for sulfonation for 2-4 hours; after the sulfonation is ended, regulating the temperature of the system, adding formaldehyde in the proportion, regulating the pH, stirring at a constant temperature for 2-6 hours, and cooling to a room temperature, thereby obtaining the modified dispersant.
Description
Technical field
The present invention is specifically related to the research that a kind of modified lignin mahogany sulfonate makes dye dispersant modified condition, belongs to chemical technology field.
Background of invention
Along with the development of modern Dyeing technique, vat dyes and dispersed dye are come out one after another, and they need at high temperature to dye, and propose requirements at the higher level like this to dye dispersant, as hypotoxicity, good thermostability and dispersiveness.Due to the exhaustion day by day of petroleum resources, the dispersion agent price utilizing petroleum derivative to prepare climbs up and up.Xylogen is the natural polymers that occurring in nature content is only second to Mierocrystalline cellulose and chitin, whole world annual production can reach 6E14t, it is as filling and cohere material, the interaction between plant cellulose can be strengthened,, be also appoint the extensive composition extracting plant cellulose and must go out.Therefore, lignin derivative is separated generation already in a large number as the by product of paper industry.Directly utilize sulfonated lignin can not meet the industrial requirements of high stability, high dispersive type as dye dispersant, therefore must carry out the modification of certain condition to ligninsulfonate, so that better utilised.
The present invention relates to the research that a kind of modified lignosulfonates makes dye dispersant modified condition, this research with the alkali lignin in papermaking wastewater for raw material, under high-temperature alkaline condition, through sulfonation condensation and sulfomethylation modification, determine the top condition of ligninsulfonate modifiers dispersants.
Summary of the invention
The present invention relates to the research that a kind of modified lignosulfonates makes dye dispersant modified condition.
In order to achieve the above object, this invention takes following technical scheme:
Technical scheme of the present invention is as follows:
The present invention relates to the research that a kind of modified lignosulfonates makes dye dispersant modified condition, it is characterized in that: above-mentioned raw materials is preferably from paper mill by product ligninsulfonate.
Sulfonated reagent preferably from: one of sulphur trioxide, S-WAT, chlorsulfonic acid or combination.
Described sulfomethylation reagent preferably from: one of formaldehyde, acetaldehyde, propionic aldehyde or combination.
Described temperature is: 60-120 DEG C.
Described alkaline condition is: 10.0-13.0.
Above-mentioned water described above is preferably from one of tap water, distilled water, deionized water.
In system, each component proportion is: sulfonated lignin: 50-100 part, deionized water: 100-300 part, S-WAT: 30-80 part, aqueous sodium hydroxide solution: 30%, hydrochloric acid soln: 30%, massfraction, formaldehyde: 40-80 part.
Concrete operation method: add sulfonated lignin, deionized water and S-WAT by above-mentioned mass ratio in there-necked flask, the temperature of regulation system and pH are to condition described above, and constant temperature stirs sulfonation 2-4h.After sulfonation terminates, regulation system temperature, adds aforementioned proportion formaldehyde, regulates pH, and constant temperature stirs 2-6h, and being cooled to room temperature can obtain.
Embodiment
Below in conjunction with embodiment, the present invention is described further, but is not limited only to this.
Embodiment 1:
Raw material and proportioning:
Sulfonated lignin: 50 parts, deionized water: 100 parts, S-WAT: 30 parts, aqueous sodium hydroxide solution: 30%, hydrochloric acid soln: 30%, massfraction, formaldehyde: 40 parts.
Preparation method:
Concrete operation method: add sulfonated lignin, deionized water and S-WAT by above-mentioned mass ratio in there-necked flask, the temperature of regulation system is at 90 DEG C, and between pH12, constant temperature stirs sulfonation 2-4h.After sulfonation terminates, regulation system temperature, at 70 DEG C, adds aforementioned proportion formaldehyde, regulates pH to be 10, and constant temperature stirs 2-6h, and being cooled to room temperature can obtain.
Embodiment 2:
Raw material and proportioning:
Sulfonated lignin: 80 parts, deionized water: 200 parts, S-WAT: 50 parts, aqueous sodium hydroxide solution: 30%, hydrochloric acid soln: 30%, massfraction, formaldehyde: 70 parts.
Concrete preparation method is with embodiment 1.
Embodiment 3:
Sulfonated lignin: 100 parts, deionized water: 150 parts, S-WAT: 50 parts, aqueous sodium hydroxide solution: 30%, hydrochloric acid soln: 30%, massfraction, formaldehyde: 50 parts.
Concrete preparation method is with embodiment 1.
Above-described embodiment is only and clearly the invention example is described, and the restriction not to the invention embodiment.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here exhaustive without the need to also giving all embodiments.
Claims (8)
1. the present invention relates to the research that a kind of modified lignosulfonates makes dye dispersant modified condition, it is characterized in that: above-mentioned raw materials is preferably from paper mill by product ligninsulfonate.
2., as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, sulfonated reagent is preferably from one of sulphur trioxide, S-WAT, chlorsulfonic acid or combination.
3., as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, described sulfomethylation reagent is preferably from one of formaldehyde, acetaldehyde, propionic aldehyde or combination.
4., as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, described temperature is: 60-120 DEG C.
5., as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, described alkaline condition is: 10.0-13.0.
6. as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, above-mentioned water described above is preferably from one of tap water, distilled water, deionized water.
7. as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, aqueous sodium hydroxide solution massfraction: 30%, hydrochloric acid soln massfraction: 30%.
8. as above-mentioned modified lignosulfonates according to claim 1 does the research of dye dispersant modified condition, concrete operation method: add sulfonated lignin, deionized water and S-WAT by above-mentioned mass ratio in there-necked flask, the temperature of regulation system and pH are to condition described above, and constant temperature stirs sulfonation 2-4h.After sulfonation terminates, regulation system temperature, adds aforementioned proportion formaldehyde, regulates pH, and constant temperature stirs 2-6h, and being cooled to room temperature can obtain.
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| CN201310646487.6A CN104672467A (en) | 2013-12-03 | 2013-12-03 | Study of taking modified lignosulfonate as dye dispersant modification condition |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877143A (en) * | 2015-06-24 | 2015-09-02 | 济南圣泉集团股份有限公司 | Dyeing dispersant and preparation method thereof |
| CN104892953A (en) * | 2015-06-24 | 2015-09-09 | 济南圣泉集团股份有限公司 | Modified lignosulphonate and preparing method and application thereof |
| CN105968381A (en) * | 2016-05-30 | 2016-09-28 | 浙江山峪染料化工有限公司 | Method for modifying lignosulfonate |
| CN106397789A (en) * | 2016-09-29 | 2017-02-15 | 陕西科技大学 | Modification method of lignosulfonate |
| CN110922607A (en) * | 2019-12-10 | 2020-03-27 | 苏州经贸职业技术学院 | Preparation method of environment-friendly dye dispersant |
| WO2021182502A1 (en) * | 2020-03-13 | 2021-09-16 | 日本製紙株式会社 | Dye dispersant |
-
2013
- 2013-12-03 CN CN201310646487.6A patent/CN104672467A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877143A (en) * | 2015-06-24 | 2015-09-02 | 济南圣泉集团股份有限公司 | Dyeing dispersant and preparation method thereof |
| CN104892953A (en) * | 2015-06-24 | 2015-09-09 | 济南圣泉集团股份有限公司 | Modified lignosulphonate and preparing method and application thereof |
| CN105968381A (en) * | 2016-05-30 | 2016-09-28 | 浙江山峪染料化工有限公司 | Method for modifying lignosulfonate |
| CN105968381B (en) * | 2016-05-30 | 2019-03-05 | 浙江山峪染料化工有限公司 | A kind of method of modified lignin mahogany sulfonate |
| CN106397789A (en) * | 2016-09-29 | 2017-02-15 | 陕西科技大学 | Modification method of lignosulfonate |
| CN106397789B (en) * | 2016-09-29 | 2019-11-08 | 陕西科技大学 | A kind of method of modifying of lignosulfonates |
| CN110922607A (en) * | 2019-12-10 | 2020-03-27 | 苏州经贸职业技术学院 | Preparation method of environment-friendly dye dispersant |
| WO2021182502A1 (en) * | 2020-03-13 | 2021-09-16 | 日本製紙株式会社 | Dye dispersant |
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Application publication date: 20150603 |