Method for preparing trimethylolpropane-tri-(2-methyl-1-aziridine) propionate

A technology based on trimethylolpropane and aziridinyl, which is applied in the field of preparation of trimethylolpropane-tris(2-methyl-1-aziridinyl)propionate, and can solve temporary problems without precision products Sexual protection applications and other issues

Inactive Publication Date: 2016-12-14
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Waterborne polyurethane dispersions have been widely used in leather, textiles, furniture, plastics, automobiles, etc. Temporary protection of the product is applied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) After mixing 72 grams of acrylic acid and 32 grams of trimethylolpropane evenly, add 1.8-2.5 grams of cerium sulfate, 0.4 grams of hydroquinone and 60 grams of toluene in sequence;

[0015] (2) Heating to 50°C while stirring, then blowing in air for about 2 hours, then heating to 80°C and reflux reaction for about 4 hours, keeping stirring during the whole process;

[0016] (3) After cooling to 60 °C, add 45 ml of water, stir for 20 minutes, then let it stand for more than 15 minutes, and remove the liquid in the lower layer after layering;

[0017] (4) For the liquid in the upper layer, first wash with 15% (mass parts) sodium hydroxide solution for 2 to 3 times, then wash with saturated sodium chloride solution for 2 to 3 times, and finally wash with water for 2 to 3 times;

[0018] (5) After heating to about 60 °C for half an hour, add 0.1 g of hydroquinone, and steam for 30 minutes to obtain a light yellow transparent liquid;

[0019] (6) Take 60 grams of light ...

Embodiment 2

[0023] (1) After mixing 360 grams of acrylic acid and 160 grams of trimethylolpropane evenly, add 9.0-12.5 grams of cerium sulfate, 2.0 grams of hydroquinone and 300 grams of toluene in sequence;

[0024] (2) After heating to 50 °C while stirring, air was introduced for about 2 hours; then heated to 80 °C for about 4 hours under reflux;

[0025] (3) After cooling to 60 °C, add 225 ml of water, stir for 20 minutes, then let it stand for more than 15 minutes, and remove the liquid in the lower layer after layering;

[0026] (4) For the upper liquid, first wash with 15% (mass parts) sodium hydroxide solution for 2 to 3 times, then wash with saturated sodium chloride solution for 2 to 3 times, and finally wash with water for 2 to 3 times;

[0027] (5) After heating to about 60 °C for half an hour, add 0.5 g of hydroquinone and steam for 30 minutes to obtain a light yellow transparent liquid;

[0028] (6) Take 300 grams of light yellow transparent liquid and place it in an ice bat...

Embodiment 3

[0032] (1) After mixing 180 grams of acrylic acid and 80 grams of trimethylolpropane evenly, add 4.5-6.0 grams of cerium sulfate, 0.25 grams of hydroquinone and 150 grams of toluene in sequence;

[0033] (2) After heating to 50 °C while stirring, air was introduced for about 2 hours; then heated to 80 °C for about 4 hours under reflux;

[0034] (3) After cooling to 60 °C, add 112 ml of water, stir for 20 minutes, then let it stand for more than 15 minutes, and remove the liquid in the lower layer after layering;

[0035] (4) For the upper liquid, first wash with 15% (mass parts) sodium hydroxide solution for 2 to 3 times, then wash with saturated sodium chloride solution for 2 to 3 times, and finally wash with water for 2 to 3 times;

[0036] (5) Heat to about 60 ℃ for half an hour, then add 0.25 g of hydroquinone, and steam for 30 minutes to obtain a light yellow transparent liquid;

[0037] (6) Put 100 grams of light yellow transparent liquid in an ice bath (below 5°C), add...

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PUM

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Abstract

A method for preparing trimethylolpropane-tri-(2-methyl-1-aziridine) propionate comprises the steps of mixing trimethylolpropane with acrylic acid, and adding cerous sulfate, hydroquinone and methylbenzene; conducting stirring heating and reflux reaction, adding water, conducting stirring, conducting stand-layering, and removing liquid on the lower layer; reserving liquid on the upper layer, conducting washing with sodium hydroxide solution and then with saturated sodium chloride solution, and finally conducting washing with water; conducting heating, standing for 30 min, adding hydroquinone, and conducting rotary steaming to obtain faint yellow transparent liquid; placing the transparent liquid in an ice bath, adding 2-methyl aziridine dropwise while stirring, and moving the liquid to a brown bottle; placing the brown bottle at room temperature away from light to obtain trimethylolpropane-tri-(2-methyl-1-aziridine) propionate. The peel strength of a peelable protective film prepared from cured waterborne polyurethane dispersoid is 300-500 n / m.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a method for preparing trimethylolpropane-tris(2-methyl-1-aziridinyl) propionate, which organic compound is used for curing water-based peelable polyurethane dispersion , the cured film layer has peelability. Background technique [0002] Polyurethane resins have excellent properties and are widely used in the fields of coatings and adhesives. Waterborne polyurethane resin has the advantages of environmental protection and energy saving and has become the development direction. Waterborne polyurethane resins are divided into three types: aqueous solution type, dispersion type and emulsion type. The waterborne polyurethane resins on the market are basically dispersion type and emulsion type. Waterborne polyurethane dispersions have been widely used in leather, textiles, furniture, plastics, automobiles, etc. Temporary protection of the product is applied. For example, polymeth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D203/10
CPCC07D203/10
Inventor 孟江燕傅念清王云英陈芳芳
Owner NANCHANG HANGKONG UNIVERSITY
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