Preparation method of high pure succinate surfactants for paper manufacturing industry

A technology of surfactants and succinates, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problem of poor purity of dialkyl succinate sodium sulfonate surfactants, complex product components, and application problems. Limitation of scope and other issues, to achieve the effect of reducing production costs, less by-products, and promoting development

Inactive Publication Date: 2009-03-18
SOUTHEAST UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, my country's current production process for producing dialkyl sodium succinate sulfonate has certain defects, such as cumbersome process, vacuum distillation and purification after esterification, inert gas as protective gas in sulfonation reaction, and the nee

Method used

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  • Preparation method of high pure succinate surfactants for paper manufacturing industry
  • Preparation method of high pure succinate surfactants for paper manufacturing industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add maleic anhydride and isooctyl alcohol with a molar ratio of 1:2 in the reactor, add the catalyst p-toluenesulfonic acid of 0.3% of the total molar amount, and equip a condenser tube, a temperature control device, and a water separator, Heated to 130°C and kept at this temperature for 5 hours, then cooled to room temperature to obtain a light yellow viscous liquid.

[0024] (2) Washing the obtained first step product with potassium carbonate aqueous solution and sodium chloride aqueous solution three times respectively to obtain diisooctyl succinate. Its appearance is light yellow liquid, the average yield is 94%, and the refractive index is 1.4543.

[0025] (3) Add the washed and separated product into the reaction kettle, then add sodium bisulfite and esterification product with a molar ratio of 1:1 and water with a total molar weight of 15% of sodium bisulfite, and equip a condenser tube and a mechanical Stir and heat to reflux at 100°C for 6 hours. Then coo...

Embodiment 2

[0027] (1) Add maleic anhydride and n-dodecyl alcohol in the reaction kettle at a molar ratio of 1:2, add 0.5% p-toluenesulfonic acid as a catalyst, equip a condenser, a temperature control device, and a water separator, and heat to 165 °C and maintained at this temperature for 5 hours, then cooled to room temperature.

[0028] (2) Add the product of the first step in the reaction kettle, then add sodium bisulfite and esterification product and water with a total molar weight of 15% of sodium bisulfite in a molar ratio of 1:1, add a condenser tube and mechanical stirring, Heat to reflux at 110°C for 6 hours. When the solution is cooled to about 50°C, add isopropanol to the solution and stir slightly.

Embodiment 3

[0030](1) Add maleic anhydride and n-tetradecyl alcohol in a molar ratio of 1:2 into the reactor, add 0.5% p-toluenesulfonic acid as a catalyst, and equip with a condenser, temperature control device, and water separator. Heat to 190°C and hold at this temperature for 5 hours, then cool to room temperature.

[0031] (2) Add the product of the first step in the reaction kettle, then add sodium bisulfite and esterification product and water with a total molar weight of 15% of sodium bisulfite in a molar ratio of 1:1, add a condenser tube and mechanical stirring, Heat to reflux at 95°C for 6 hours. When the solution is cooled to about 50°C, add isopropanol to the solution and stir slightly.

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Abstract

The invention relates to a method for preparing high purity surface active agent used for papermaking industry. By intra-molecular structure design, the content of isooctyl alcohol in succinic acid bi-alkyl SEDSS surface active agent is controlled, thus adjusting the hydrophilicity and penetrability of the surface active agent and surface tension of coatings, meeting the need of papermaking industry and promoting the development of the papermaking industry. The preparing method has the advantages of simple preparation, no need of decompression distillation purification after esterification, no need of taking inert gas as protective gas in sulfonation reaction, no need of adding phase transfer catalyst, no time wasting or labor force wasting and that the production cost of the surface active agent is reduced; the prepared succinic acid bi-alkyl SEDSS has the advantages of high purity, less by-product, no need of purification, cheap and easily obtained materials of reaction, low toxicity and wide application prospect.

Description

technical field [0001] The invention belongs to the preparation technology of surfactants, in particular to a preparation method of high-purity succinate series surfactants used in papermaking industry. Background technique [0002] Existing technology: carbonless copy paper is a kind of chemical reaction type coated processing paper, using 40g / m2 base paper, coating is evenly coated on the paper on the coating machine, through the different substances embedded in the upper and lower paper coating Color reaction under pressure to achieve the purpose of copying. In order to make each component in the paint evenly dispersed and evenly coated on the base paper, a small amount of different surfactants need to be added to the above paint system during the coating production process to improve the wetting performance of the paint and make it It can spread rapidly on the paper base during coating, and the coating has good smoothness even under high-speed coating conditions. In ad...

Claims

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Application Information

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IPC IPC(8): B01F17/00C09K23/00
Inventor 刘松琴吴亚峰应军翟洪金
Owner SOUTHEAST UNIV
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