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Preparation method of amino-terminated hyperbranched aliphatic polyester and application thereof

An amino-terminated hyperbranched and aliphatic polyester technology is applied in the preparation of amino-terminated hyperbranched aliphatic polyesters, and in the field of preparation of amino-terminated hyperbranched polyesters, and can solve the problems of high energy consumption, unfavorable industrial production, long time, etc. problem, to achieve the effect of good reactivity, increased hardness and good tensile strength

Inactive Publication Date: 2019-08-23
WEIHAI CY DENDRIMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Hydroxyl-terminated hyperbranched aliphatic polyester is a hyperbranched polyester with polyol as the core and polybasic aliphatic carboxylic acid as the chain extender. The number of terminal hydroxyl groups is 8-128. In the reported patents, the boiling point Higher solvent, there are disadvantages such as high energy consumption and long time when removing this type of solvent, which is not conducive to subsequent industrial production
In addition, there are few related patent reports involving high melting point aminocarboxylic acids to modify hydroxyl-terminated hyperbranched aliphatic polyesters and their applications

Method used

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  • Preparation method of amino-terminated hyperbranched aliphatic polyester and application thereof
  • Preparation method of amino-terminated hyperbranched aliphatic polyester and application thereof
  • Preparation method of amino-terminated hyperbranched aliphatic polyester and application thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Get the hyperbranched polyester (marked as HBPE-10) 2.00g and 0.182g of hyperbranched polyester (marked as HBPE-10) with 8 terminal hydroxyl numbers and join in the reaction vessel, the temperature is raised to 80 degrees Celsius, and 1% of Catalyst, reacted for 3 hours, cooled for 1 hour, and discharged to obtain an amino-terminated hyperbranched polyester with a graft rate of 10%. From the infrared spectrum, it can be seen that at 2931cm -1 and 2855cm -1 The peak at is the corresponding absorption peak of the amino group of the product obtained after modification of the terminal amino group.

Embodiment 2

[0027] Get 2.00g of hyperbranched polyester (marked as HBPE-20) and 0.762g of hyperbranched polyester (marked as HBPE-20) with 16 hydroxyl groups and join in the reaction vessel, heat up to 120 degrees Celsius, add 0.5 % catalyst, reacted for 4h, cooled for 1h, and discharged to obtain an amino-terminated hyperbranched polyester with a grafting rate of 30%.

Embodiment 3

[0029] Get the hyperbranched polyester (marked as HBPE-20) 2.00g and 2.42g of hyperbranched polyester (marked as HBPE-20) with 16 terminal hydroxyl numbers and join in the reaction vessel (feeding ratio 100%), heat up to 180 degrees Celsius, add 0.5% Catalyst, reacted for 10 hours, cooled for 1 hour, and discharged to obtain amino-terminated hyperbranched polyester with a graft rate of 90%.

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Abstract

The invention relates to a method for amino-terminated hyperbranched polyester, in particular relates to a method for preparing amino-terminated hyperbranched aliphatic polyester and application thereof, and belongs to the technical field of hyperbranched polymer synthesis. The method for preparing the amino-terminated hyperbranched aliphatic polyester comprises the following steps: adding a certain amount of hydroxyl-terminated hyperbranched aliphatic polyester and high melting point amino carboxylic acid into a reaction container, heating and melting at a heating temperature of 80-180 DEG C,adding a certain metering ratio of catalyst into a reaction system, continuing the reaction for 3-10 hours under the conditions of stirring and vacuumizing, and cooling to obtain a target product. The method has the beneficial effects that the hardness of conventional epoxy resin sold on the market is improved, the reactivity of the terminal amino group and the epoxy group of the epoxy resin is better, and the obtained epoxy resin has good tensile strength, elongation at break and tensile viscosity strength under the same test conditions.

Description

technical field [0001] The invention relates to a preparation method of amino-terminated hyperbranched polyester, in particular to a preparation method and application of amino-terminated hyperbranched aliphatic polyester, which belongs to the technical field of hyperbranched polymer synthesis. Background technique [0002] Hyperbranched polyester is a kind of hyperbranched polymer, which has a regular repeating spatial structure, and there are a large number of ester groups on its skeleton, which makes this kind of material have good biocompatibility and biodegradability. Zhongduo is used in solvent-free coatings, polymer processing aids and drug carriers after modification. [0003] In the patent CN103169977B, N,N-dimethylformamide is used as a solvent, and a multi-acid hyperbranched polyester formed by ring-opening of maleic anhydride and hydroxyl-terminated hyperbranched polyester is used, and then reacted with polyethylene glycol monomethyl ether , form multiple branch...

Claims

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Application Information

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IPC IPC(8): C08G63/91C08G83/00C08L63/00C08L87/00C08L67/00
CPCC08G63/91C08G83/006C08L63/00C08L87/00C08L67/00
Inventor 李武松刘聪聪毕研刚
Owner WEIHAI CY DENDRIMER TECH
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