Preparation method of oligomerization aspartic resin

A technology of resin and aspartame, which is applied in the field of preparation of aspartame resin, can solve the problems such as the performance discount of aspartame polyurea, and achieve the effect of increasing crosslinking density and improving performance
CN112552195APending Publication Date: 2021-03-26深圳飞扬兴业科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
深圳飞扬兴业科技有限公司
Publication Date
2021-03-26

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Abstract

The invention discloses a preparation method of oligomerization aspartic resin. The preparation method comprises the following steps: maleic anhydride and dihydric alcohol or polyhydric alcohol form hydroxyl-terminated oligomerization polyester with the polymerization degree of 2-10; and then carrying out Michael addition reaction on the polyester by sterically hindered primary amine to synthesizethe oligomeric polyfunctional aspartic resin. By synthesizing the polyfunctional aspartic resin, namely improving the functionality of secondary amine in the polyaspartic acid ester, the crosslinkingdensity of the polyaspartic acid ester polyurea can be increased, so that the performance of the polyaspartic acid ester polyurea in an extreme environment is improved.
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Description

technical field

[0001] The invention relates to the technical field of resin preparation, in particular to a preparation method of oligomerized aspartame resin. Background technique

[0002] Aspartic polyurea is the abbreviation of polyaspartate polyurea, which is the third generation of polyurea. And polyaspartic ester (Polyaspartic Ester, PAE) is a kind of special steric hindrance type secondary amine, due to the steric hindrance and inductive effect of ester group, especially the steric hindrance effect and low viscosity of amino substituent The gel time of isocyanate curing agents can be adjusted from minutes to hours.

[0003] The current aspartic polyurea systems are all polymerized by difunctional secondary amines and difunctional or trifunctional isocyanate curing agents. Under normal environmental conditions, the application of this aspartic polyurea resin is very good, it has excellent UV resistance and weather resistance (no yellowing and has very high gloss ret...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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