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Polyurethane-aspartic polyurea resin, preparation method thereof and polymer

A technology of aspartic polyurea resin and polyurethane, which is applied to the preparation of cyanide reaction, chemical instruments and methods, and the preparation of organic compounds. The loss of the effect of promoting the completion of the reaction

Pending Publication Date: 2022-08-02
深圳飞扬兴业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of this change is very limited, and usually only prolongs the construction time by tens of minutes.

Method used

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  • Polyurethane-aspartic polyurea resin, preparation method thereof and polymer
  • Polyurethane-aspartic polyurea resin, preparation method thereof and polymer
  • Polyurethane-aspartic polyurea resin, preparation method thereof and polymer

Examples

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preparation example Construction

[0062] The second aspect of the present invention provides a method for preparing the above-mentioned polyurethane-aspartic polyurea resin, which comprises: reacting and drying an amino alcohol and a maleic acid diester to obtain the polyurethane-aspartic polyurea resin. The drying method may include drying under reduced pressure, drying under heating, and the like. The reaction of the present invention is carried out in an inert gas atmosphere, such as nitrogen, argon, etc., and the progress of the reaction can be monitored by TLC.

[0063] In one embodiment, the temperature of the reaction in the present invention is 60-100°C, which can be exemplified as 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C, 100°C °C.

[0064] A second aspect of the present invention provides a polyurethane-aspartic polyurea polymer, and the raw materials for preparing the polymer include the polyurethane-aspartic polyurea resin according to any one of claims 1 to 7, and a crosslinking agent.

[...

Embodiment 1～8

[0069] Embodiments 1 to 8 provide a polyurethane-aspartic polyurea resin

Embodiment 1

[0071] This example provides a polyurethane-aspartic polyurea resin. The raw materials for the preparation of the resin are amino alcohol and diethyl maleate, and the molar ratio is 1:2. The structural formula of the amino alcohol is as follows:

[0072] This example also provides the above-mentioned preparation method of the polyurethane-aspartic polyurea resin, including: adding 129 grams of amino alcohol into a four-necked bottle under the condition of nitrogen, then adding 344 grams of diethyl maleate, heating up To 80°C, the reaction endpoint was monitored by TLC. After the reaction was completed, excess diethyl maleate was removed under reduced pressure to obtain 288 g of polyurethane-aspartic polyurea resin with a yield of 95.7%.

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Abstract

The invention relates to the field of polymer synthesis, in particular to polyurethane-asparagine polyurea resin, a preparation method thereof and a polymer. The polyurethane-aspartic polyurea resin is prepared from the following raw materials: amino alcohol and diester maleate. According to the polyurethane-aspartic polyurea resin provided by the invention, one end of a secondary amine group is controlled to be connected with a diester group, the other end of the secondary amine group is controlled to be connected with a hydroxyl substituted naphthenic base, a novel resin structure containing the secondary amine group and hydroxyl is obtained, and different functional groups can be cured with different cross-linking agents such as polyisocyanates, polyepoxy compounds and the like by utilizing different activities of the different functional groups, so that the polyurethane-aspartic polyurea resin is prepared. And controlling the curing rate. According to the method disclosed by the invention, by controlling the appropriate dosage of the diester maleate and the primary amine, the complete reaction is promoted, the yield is improved, and meanwhile, the loss of a product in a drying process caused by excessive diester maleate is also avoided.

Description

technical field [0001] The present invention relates to the field of polymer synthesis, and more particularly, the present invention relates to a polyurethane-aspartic polyurea resin, a preparation method thereof, and a polymer. Background technique [0002] Polyureas are polymers with urea linkages formed by the reaction of polyisocyanates with polyamines. It does not require catalysts or heat to react quickly. Heated spray polyurea (SPUA) is required to adjust the viscosity in order to spray the film uniformly. After curing, the polymer chain contains carbon-carbon bonds, ether bonds, urea bonds, ester bonds, urethane bonds, and the like. Polyurethane is a polymer material that forms hydrogen bonds through the chemical reaction of isocyanate compounds and polyols. The reaction requires a certain temperature and catalyst. After the polymer material is cured into a film, the polymer chain contains a variety of chemical bonds, such as carbon-carbon bonds, ether bonds, est...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C229/24C07C227/08C08G18/32C08G18/79C08G18/73
CPCC07C229/24C07C227/08C08G18/3287C08G18/792C08G18/73C07C2601/14C07C2601/08
Inventor 熊东路龙绪俭陈林生徐涛李斌仁许超平肖增钧荣麒翔
Owner 深圳飞扬兴业科技有限公司
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