Preparation method of water-based radix asparagi polyurea resin and water-based radix asparagi polyurea resin

A kind of aspartame resin and water-based technology, which is applied in the preparation of water-based aspartame resin, and in the field of water-based aspartame resin, can solve the problems of poor sealability of coating film, general heat resistance, slow curing speed, etc., and achieve Good water resistance, good adhesion, and the effect of increasing toughness

Pending Publication Date: 2021-11-23
HUNAN TUOCHUANG POLYMERIC NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various resins have many problems in different application scenarios, such as low solid content leading to too many volatile solvents, which will pollute the environment, slow curing speed, affecting process quality and production efficiency, poor sealing of the coating film, general heat resistance, and corrosion resistance. General effect
With the increasing environmental protection awareness of the people and the implementation of environmental protection policies, water-based materials are an inevitable trend. Many leading companies have made a lot of efforts in this area, but the development and innovation of water-based functional resins are not satisfactory.

Method used

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  • Preparation method of water-based radix asparagi polyurea resin and water-based radix asparagi polyurea resin

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preparation example Construction

[0018] combined with figure 1 , the invention provides a kind of preparation method of waterborne aspartame resin, comprising:

[0019] A preparation method of water-based aspartic polyurea resin, in an inert gas atmosphere, adding unsaturated fatty acid diester dropwise to glycidyl ether dibasic primary amine adducts, reacting at 80-120°C for 2-36 hours, and then Dry to obtain a water-soluble aspartame resin.

[0020] The molar ratio of the glycidyl ether dibasic primary amine adduct to the unsaturated fatty acid diester is 1: (1.6-2.1).

[0021] The preparation method of the glycidyl ether dibasic primary amine adduct comprises: adding the dibasic primary amine into the reaction kettle, raising the temperature to 40-100°C, adding the glycidyl ether dropwise, keeping the temperature for 1-3 hours, and strictly controlling the reaction temperature , to obtain glycidyl ether dibasic primary amine adducts.

[0022] The molar ratio of the glycidyl ether to the primary diamine ...

Embodiment 1

[0030] A preparation method of water-based aspartame polyurea resin, comprising:

[0031] The maleic acid diester is added dropwise to the glycidyl ether dibasic primary amine adduct, reacted at 80-120° C. for 2-36 hours, and then dried to obtain water-soluble aspartic polyurea resin.

[0032] The preparation method of the glycidyl ether dibasic primary amine adduct comprises: adding the dibasic primary amine into the reaction kettle, raising the temperature to 40-100° C., adding the glycidyl ether dropwise, keeping the temperature for 1-3 hours, and strictly controlling the reaction temperature. Preparation of glycidyl ether dibasic primary amine adducts. Preferably, the speed of dripping glycidyl ether in the present invention is controlled within 2 hours, and cooling measures are taken at the same time.

Embodiment 2

[0034] A preparation method of water-based aspartame polyurea resin, comprising:

[0035] S1, equipped with agitator, circulating cooling water, N 2 Add 270 g of methylcyclohexanediamine to the glass reactor with a through pipe, add 400 g of glycidyl ether with an epoxy value of 0.5 dropwise with a constant pressure separatory funnel, raise the temperature to 80 ° C, and control the drop rate for 2 hours to complete the dropwise addition. After the addition is completed, heat preservation reaction for 2 hours to obtain a glycidyl ether dibasic primary amine adduct;

[0036] S2, on the basis of S1, slowly add diethyl maleate 350g, N 2 React under protection at 100°C for 12 hours, determine the end point of the reaction by measuring the primary amine, and obtain the unsaturated fatty acid diester modified glycidyl ether binary primary amine adduct, that is, a water-based aspartame resin.

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Abstract

The invention relates to a preparation method of water-based radix asparagi polyurea resin, which comprises the following steps: in an inert gas atmosphere, dropwise adding unsaturated fatty acid diester into a glycidyl ether binary primary amine adduct, conducting reacting at 80-120 DEG C for 2-36 hours, and then conducting drying to obtain the water-soluble water-based radix asparagi polyurea resin. The resin has the advantages of high curing speed, water resistance, heat resistance and environment friendliness.

Description

technical field [0001] The invention relates to the technical field of polyurea coatings, in particular to a preparation method of water-based aspartame polyurea resin and the water-based aspartame polyurea resin. Background technique [0002] The polyureas currently used in the market are basically "second-generation polyurea" and "third-generation polyurea". Among them, the "third-generation polyurea" refers to low-reactivity polyaspartate polyurea (PAE), which has good weather resistance, medium corrosion resistance and good construction, and is widely used in construction, pipelines, In industries such as water conservancy, its main downstream application products are solvent-free or solvent-based products. [0003] The resins currently used in the field of protective coatings and functional adhesives mainly include alkyd resins, epoxy resins, conventional polyurethanes, and acrylates. Various resins have many problems in different application scenarios, such as low so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/00C09D175/02
CPCC08G73/00C09D175/02
Inventor 雷冠军
Owner HUNAN TUOCHUANG POLYMERIC NEW MATERIAL CO LTD
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