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Synthesis of polyaspartate aminoester polyether-amine containing secondary-amine group

A technology of polyaspartic acid ester and synthesis method, which is applied in the field of synthesis of polyaspartic acid ester and polyetheramine, can solve the problem of not mentioning time and the like, and achieve the effects of shortening the reaction time and prolonging the gel time.

Inactive Publication Date: 2007-11-21
上海市涂料研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although U.S. Patent 5,243,012 also mentioned the synthesis of polyaspartate polyetheramine, it did not mention the time required for the synthetic conversion rate to be 100%.

Method used

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  • Synthesis of polyaspartate aminoester polyether-amine containing secondary-amine group
  • Synthesis of polyaspartate aminoester polyether-amine containing secondary-amine group
  • Synthesis of polyaspartate aminoester polyether-amine containing secondary-amine group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The four-neck flask was equipped with a stirrer, heater, addition funnel and nitrogen inlet. With 400g (0.400 equivalent) of Jeffamine D-2000 and 19.8g (0.200 equivalent) of 4,4'-diaminodiphenylmethane (MDA), the flask was heated up to 120 ° C, and was added to the flask through the addition funnel within 4 hours. 136.8 g (0.600 equivalents) of dibutyl maleate were added. After the dropwise addition, the reaction was continued at this temperature for 30 hours, and the reaction was left at room temperature for 3 months to reach 100% completion. The gel time of its reaction with N3390 curing agent reaches 4 hours.

Embodiment 2

[0061] The four-neck flask was equipped with a stirrer, heater, addition funnel and nitrogen inlet. With 400g (0.400 equivalent) of Jeffamine D-2000 and 26.4g (0.267 equivalent) of 4,4'-diaminodiphenylmethane (MDA), the flask was heated to 120 ° C, and was added to the flask through the addition funnel within 4 hours. 152.1 g (0.667 equivalents) of dibutyl maleate were added. After the dropwise addition, the reaction was continued at this temperature for 30 hours, and the reaction was left at room temperature for 4 months to reach 100% completion. The gel time of its reaction with N3390 curing agent reaches 3.5 hours.

Embodiment 3

[0063] The four-neck flask was equipped with a stirrer, heater, addition funnel and nitrogen inlet. Put 400g (0.400 equivalent) of Jeffamine D-2000 and 17.8g (0.200 equivalent) of diethyltoluenediamine (DETDA) into the flask, raise the temperature of the flask to 125°C, and add 136.8 g (0.600 equivalents) of dibutyl maleate. After the dropwise addition, the reaction was continued at this temperature for 30 hours, and the reaction was left at room temperature for 3 months to reach 100% completion. The gel time of its reaction with N3390 curing agent reaches 3.5 hours.

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Abstract

Synthesis of polyaspartic acid ester polyether ammonium containing secondary amine is carried out by taking arylamine compound as active catalyst and Micro-addition reacting for polyether ammonium and maleate or fumarate ester to obtain final product. It has shorter reactive time and delays polyurea coating gel time.

Description

technical field [0001] The present invention relates to a kind of synthetic method of polyaspartic ester polyether amine as an important component of polyurea type polyurethane material, specifically, relate to a kind of polyaspartic ester polyether containing secondary amine group Synthesis of amines. Background technique [0002] Polyetheramine has been found to be a kind of polyamine component necessary for the production of polyurea elastomer, polyurea reaction injection molding (RIM), spray polyurea coating and other products. Its only disadvantage is that polyetheramines react with polyisocyanates so quickly that they are difficult to process with conventional equipment. By changing the structure of polyether amine, its primary amine becomes secondary amine, which can greatly reduce its reaction rate with polyisocyanate. US Pat. No. 3,666,788 uses the reaction of acrylonitrile and polyetheramine to prepare polyetheramine with secondary amine structure, but the reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/332C08G18/38C09D175/02
Inventor 葛喨孙凌
Owner 上海市涂料研究所有限公司
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