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Sulfate-type hydrophilic chain extender and preparation method thereof

A technology of hydrophilic chain extender and sulfate ester salt, applied in sulfate ester preparation, organic chemistry and other directions, can solve the problems such as reports of sulfate ester salt type hydrophilic chain extender that have not been seen, and achieve excellent electrolyte resistance and stability. Effect

Active Publication Date: 2017-09-01
DYMATIC CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no related reports on sulfate ester type hydrophilic chain extenders

Method used

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  • Sulfate-type hydrophilic chain extender and preparation method thereof
  • Sulfate-type hydrophilic chain extender and preparation method thereof
  • Sulfate-type hydrophilic chain extender and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Polyether polyol PEG-1 (see figure 1 ) and sulfamic acid are placed in a reaction flask in a molar ratio of 1:1.5, protected by nitrogen gas, slowly heated to 90° C., kept for 2 hours, and monitored for anion content close to the theoretical value;

[0040] (2) Cool down to below 50°C, add solvent methanol to dissolve, filter, collect the filtrate, and distill under reduced pressure to obtain a concentrated solution;

[0041] (3) Add solvent acetone to the concentrated solution, and neutralize with excess sodium hydroxide to ensure that the solution is weakly alkaline, stir evenly, filter under reduced pressure, collect the filtrate, and then distill the filtrate under reduced pressure to obtain a viscous liquid that is Sulphate salt type hydrophilic chain extender S-1, its structural formula is as follows figure 2 shown.

Embodiment 2

[0043] (1) Polyether polyol PEG-2 (see image 3 ) and sulfamic acid are placed in a reaction flask in a molar ratio of 1:1.5, placed in the reaction flask, protected by nitrogen gas, slowly heated to 90° C., kept for 3 hours, and the anion content is monitored to approach the theoretical value;

[0044] (2) Cool down to below 50°C, add solvent ethanol to dissolve, filter, collect the filtrate, and distill under reduced pressure to obtain a concentrated solution;

[0045] (3) Add solvent acetone to the concentrated solution, and neutralize with excess sodium carbonate to ensure that the solution is weakly alkaline, stir evenly, filter under reduced pressure, collect the filtrate, and then distill the filtrate under reduced pressure to obtain a viscous liquid that is sulfuric acid Ester salt type hydrophilic chain extender S-2, its structural formula is as follows Figure 4 shown.

Embodiment 3

[0047] (1) Polyether polyol PPG-1 (see Figure 5 ) and sulfamic acid are placed in a reaction flask in a molar ratio of 1:1.2, protected by nitrogen gas, slowly heated to 90° C., kept for 4 hours, and the anion content is monitored to be close to the theoretical value;

[0048] (2) Cool down to below 50°C, add solvent isopropanol to dissolve, filter, collect filtrate, and distill under reduced pressure to obtain concentrated solution;

[0049] (3) Add solvent butanone to the concentrated solution, and neutralize with excess sodium carbonate to ensure that the solution is weakly alkaline, stir evenly, filter under reduced pressure, collect the filtrate, and then distill the filtrate under reduced pressure to obtain a viscous liquid that is Sulphate salt type hydrophilic chain extender S-3, its structural formula is as follows Figure 6 shown.

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Abstract

The invention relates to a sulfate-type hydrophilic chain extender and a preparation method thereof, and belongs to the technical field of fine chemical industry. The sulfate-type hydrophilic chain extender is prepared by performing a sulfating reaction on some hydroxyl groups in polyether polyol. The sulfate-type hydrophilic chain extender has a relatively high ionization degree, can be applied to preparation of aqueous polyurethane and can endow an aqueous polyurethane emulsion with excellent electrolyte-resistant stability.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a sulfate ester type hydrophilic chain extender which can be used for synthesizing waterborne polyurethane and a preparation method thereof. Background technique [0002] With the increasingly stringent environmental protection regulations, traditional solvent-based polyurethanes are gradually being replaced by water-based polyurethanes. Waterborne polyurethane uses water as the dispersion medium, has the advantages of non-toxic, non-flammable, and non-polluting, and has both the structural characteristics and excellent performance of polyurethane materials, and is widely used in coatings, synthetic leather, adhesives and other fields. Therefore, there are more and more researches on the development and application of waterborne polyurethane related raw materials and products, and the market demand potential is huge. [0003] Hydrophilic chain extender is one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/32C08G18/50C07C303/24C07C305/10
CPCC07C303/24C08G18/3855C08G18/5072C07C305/10
Inventor 鲍亮李成祥郭玉良徐龙鹤范浩军石碧
Owner DYMATIC CHEM
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