Lignosulfonate alkylation modified surfactant and preparation method and application thereof
A technology of sulfonate alkyl and lignosulfonate, which is applied in the direction of anionic surface active compounds, chemical instruments and methods, chemical/physical processes, etc., and can solve the problem of low surface activity of modified products and heterogeneous system reactions Poor effect and other problems, to achieve the effect of solving heterogeneous reaction, reducing process cost and equipment cost, and reducing cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0032] (1) 10g sodium lignosulfonate is dissolved in 100ml mixed solution (obtained by isopropanol and water by volume ratio 1: 4), then the pH value is adjusted to 10 with mass volume ratio 10% sodium hydroxide solution, stir Fully dissolve sodium lignosulfonate.
[0033] (2) Add 3 g of chlorinated paraffin containing 14-17 carbon atoms (chlorinated paraffin 52, the average number of carbon atoms is 14-17) and 1.0 ml of pyridine (concentration ≥ 99.5%) as a catalyst. Under the protection of nitrogen, the temperature was raised to 60° C., condensed and refluxed for 6 h, and then cooled naturally. The pH of the reaction solution was adjusted with hydrochloric acid until precipitation appeared. After the precipitation was complete, it was filtered, washed, and dried to obtain a dark brown solid. According to GB / T 22237-2008, the surface tension of the product aqueous solution with a mass concentration of 1% measured by the platinum plate method at room temperature is 29.229mN / m...
Embodiment 2
[0035] (1) 10g sodium lignosulfonate is dissolved in 100ml mixed solution (obtained by isopropanol and water by volume ratio 1: 1), then the pH value is adjusted to 12 with mass volume ratio 10% sodium hydroxide solution, stir Fully dissolve sodium lignosulfonate.
[0036] (2) Add 8g of chlorinated paraffin (chlorinated paraffin 52, the average number of carbon atoms is 14-17) and 2.7ml pyridine (concentration ≥ 99.5%) containing 14-17 carbon atoms as a catalyst, under the protection of nitrogen Then, the temperature was raised to 70°C to condense and reflux for 4 hours, and then cooled naturally. The pH of the reaction solution was adjusted with hydrochloric acid until precipitation appeared. After the precipitation was complete, it was filtered, washed, and dried to obtain a dark brown solid. According to GB / T 22237-2008, the surface tension of the product aqueous solution with a mass concentration of 1% measured by the platinum plate method at room temperature is 29.385mN / ...
Embodiment 3
[0038] (1) Dissolve 10g sodium lignosulfonate in 100ml mixed solution (obtained by isopropanol and water in a volume ratio of 3:7), then adjust the pH value to 11 with mass volume ratio 10% sodium hydroxide solution, stir Fully dissolve sodium lignosulfonate.
[0039] (2) Add 2g of chlorinated paraffin containing 14-17 carbon atoms (chlorinated paraffin 52, the average number of carbon atoms is 14-17) and 0.65ml (concentration ≥ 99.5%) pyridine as a catalyst, under the protection of nitrogen Then, the temperature was raised to 50°C to condense and reflux for 5 hours, and then cooled naturally. The pH of the reaction solution was adjusted with hydrochloric acid until precipitation appeared. After the precipitation was complete, it was filtered, washed, and dried to obtain a dark brown solid. The pH of the reaction solution was adjusted with hydrochloric acid until precipitation appeared. After the precipitation was complete, it was filtered, washed, and dried to obtain a dark ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| surface tension | aaaaa | aaaaa |
| surface tension | aaaaa | aaaaa |
| surface tension | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More