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Preparation method and application of hyperbranched dispersant

A hyperbranched dispersant and hyperbranched polyester technology, applied in the field of fine chemicals, can solve the problems of low plant fiber filling, impact resistance of wood-plastic composite materials, etc., to improve interface compatibility and wide application range , Easy to shape and process

Active Publication Date: 2015-10-21
南雄市佳明化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to add a certain amount of coupling agent or compatibilizer to improve the interfacial compatibility between plant fibers and polyolefins, but the existing coupling agents or solubilizers are only suitable for some wood-plastic composites, and plant fibers The filling amount is low, and the impact resistance of wood-plastic composites needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of hyperbranched dispersant, comprising the following steps:

[0031] A. Weigh 5 parts by weight of stearic acid and place it in the reactor, add 20 parts by weight of organic solvent, stir to make it fully dissolve, add 10 parts by weight of thionyl chloride and 1 part by weight of basic catalyst after dissolving , reacted at 60°C for 5h to obtain the first mixture;

[0032] B. Dissolving 6 parts by weight of Boltron H2O in 30 parts by weight of an organic solvent, adding it to the first mixture obtained in the step A after dissolving, and reacting for 5 hours at an ultrasonic power of 50W at room temperature to obtain a second mixture;

[0033] C, take by weighing 3 weight parts of chitosan with high viscosity and N-deacetylation degree of 70-85%, add 30 weight parts of dilute acid solution, stir to make it fully dissolve, and obtain chitosan solution;

[0034] D, under room temperature condition, the chitosan solution that obtains in described s...

Embodiment 2

[0043] A preparation method of hyperbranched dispersant, comprising the following steps:

[0044] A. Weigh 6.5 parts by weight of stearic acid and place it in the reactor, add 30 parts by weight of organic solvent, stir to make it fully dissolve, add 20 parts by weight of thionyl chloride and 2.5 parts by weight of the basic catalyst , reacted at 70°C for 4.5h to obtain the first mixture;

[0045] B. Dissolve 9 parts by weight of Boltron H30 in 40 parts by weight of an organic solvent, add it to the first mixture obtained in step A after dissolving, and react for 4 hours at an ultrasonic power of 75W at room temperature to obtain a second mixture;

[0046] C, take by weighing 4.5 parts by weight of high viscosity, chitosan with N-deacetylation degree of 70-85%, add 45 parts by weight of dilute acid solution, stir to make it fully dissolve, and obtain chitosan solution;

[0047]D, under room temperature condition, the chitosan solution that obtains in described step C is slowl...

Embodiment 3

[0056] A preparation method of hyperbranched dispersant, comprising the following steps:

[0057] A. Weigh 8 parts by weight of stearic acid and place it in the reactor, add 40 parts by weight of organic solvent, stir to make it fully dissolve, add 30 parts by weight of thionyl chloride and 4 parts by weight of the basic catalyst , reacted at 80°C for 4h to obtain the first mixture;

[0058] B. Dissolving 12 parts by weight of Boltron H40 in 50 parts by weight of an organic solvent, adding it to the first mixture obtained in the step A after dissolving, and reacting for 3 hours at an ultrasonic power of 100W at room temperature to obtain a second mixture;

[0059] C, take by weighing 6 weight parts of chitosan with high viscosity and N-deacetylation degree of 70-85%, add 60 weight parts of dilute acid solution, stir to make it fully dissolve, and obtain chitosan solution;

[0060] D, under room temperature condition, the chitosan solution that obtains in described step C is s...

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PUM

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Abstract

The invention provides a preparation method and an application of a hyperbranched dispersant. The hyperbranched dispersant is mainly prepared from the raw materials of hyperbranched polyester, stearic acid and chitosan, is applied to a wood-plastic composite material, and is capable of enabling plant fibers to disperse uniformly in polyolefin, enhancing the interfacial adhesion property of the plant fibers and the polyolefin, increasing the content of the plant fibers in the wood-plastic composite material, and improving the mechanical property of the wood-plastic composite material. The hyperbranched dispersant prepared by the method has the advantages of less dosage, wide application range and simple synthetic process, and is suitable for large scale industrial production; the pollution of a product to the environment is less.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a preparation method and application of a hyperbranched dispersant. Background technique [0002] Hyperbranched polymer is a kind of highly branched polymer, which has the characteristics of low viscosity, high solubility, difficult to crystallize, difficult to entangle between molecules, a large number of terminal functional groups and strong chemical reactivity. The unique structure of hyperbranched polymers makes them widely used in many fields, such as viscosity modifiers, crosslinking agents, coatings, drug release agents, optical materials and flame retardant materials. [0003] Chitosan is a natural linear polymer, because of its unique properties, it is widely used in chemical industry, medicine, food and other fields. It has been reported that the use of chitosan as a coupling agent can improve the tensile strength, elastic modulus and storage modulus of wood f...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08L23/12C08L23/06C08L27/06C08L97/02C08L87/00C08K3/26
Inventor 陆绍荣杨晓明冼致欣施存贵
Owner 南雄市佳明化工有限公司
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