Lac resin hydrosol and preparation method thereof

A technology of shellac resin and hydrosol, applied in the field of hydrosol and preparation thereof, can solve the problems of unstable emulsion, large particles, complicated preparation process, etc. The effect of short process steps

Active Publication Date: 2013-02-06
THE RES INST OF RESOURCES INSECTS RIRI OF THE CHINESE ACADEMY OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the shellac resin soap-free emulsion can be prepared, it needs to introduce a large amount of salts to cause the instability of the emulsion, and the preparation process is cumbersome and the particles are large

Method used

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  • Lac resin hydrosol and preparation method thereof
  • Lac resin hydrosol and preparation method thereof
  • Lac resin hydrosol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Preparation of shellac resin ethanol solution

[0046] 0.3kg shellac resin is joined in the dehydrated alcohol of 9.7kg, stirring and dissolving makes shellac resin ethanol solution, wherein the mass ratio of shellac resin and dehydrated alcohol is 3:97, namely shellac resin ethanol solution The mass percentage concentration of middle shellac resin is 3%, that is to say, 3g of shellac resin is added in every 97g of dehydrated alcohol or 3kg of shellac resin is added in 97kg of dehydrated alcohol.

[0047] 2. Preparation of shellac wax resin collagen solution

[0048] Place 3L of deionized water in a disperser (Ultra-Turrax T 25 digital disperser, IKA, Germany), and add 1L of the shellac resin ethanol solution prepared in step 1 to the disperser under stirring, wherein a constant current is used. The pump (Baoding Lange Constant Current Pump Co., Ltd., BT100-1J) flows the shellac resin ethanol solution prepared in step 1 from the liquid column flow nozzle (Dongguan B...

Embodiment 2

[0054] 1. Preparation of shellac resin ethanol solution

[0055] 0.6kg shellac resin is joined in the dehydrated alcohol of 9.4kg, stirring and dissolving makes shellac resin ethanol solution, wherein the mass ratio of shellac resin and dehydrated alcohol is 6:94, namely shellac resin ethanol solution The mass percentage concentration of the middle shellac resin is 6%, that is to say, 6g of shellac resin is added to every 94g of absolute ethanol or 6kg of shellac resin is added to 94kg of absolute ethanol.

[0056] 2. Preparation of shellac resin collagen solution

[0057] Place 7L of deionized water in a disperser (Ultra-Turrax T 25 digital disperser, IKA, Germany), add 1L of the shellac resin ethanol solution prepared in step 1 to the disperser under stirring, wherein a constant current is used. The shellac resin ethanol solution prepared in step 1 is flowed out by the pump from the liquid column flow nozzle, forming a cylindrical liquid flow and flowing into the deionized ...

Embodiment 3

[0061] 1. Preparation of shellac resin ethanol solution

[0062] 0.7kg shellac resin is joined in the dehydrated alcohol of 9.3kg, stirring and dissolving makes shellac resin ethanol solution, wherein the mass ratio of shellac resin and dehydrated alcohol is 7:93, namely shellac resin ethanol solution The mass percentage concentration of middle shellac resin is 7%, that is to say, 7g of shellac resin is added in every 93g of absolute ethanol or 7kg of shellac resin is added in 93kg of absolute ethanol.

[0063] 2. Preparation of shellac wax resin collagen solution

[0064] 10L of deionized water is placed in the disperser, and 1L of the shellac resin ethanol solution prepared in step 1 is added to the disperser under agitation, wherein, the shellac resin ethanol solution prepared in step 1 is removed from the liquid column by a constant current pump. The flow nozzle flows out, forms a cylindrical liquid flow and flows into the deionized water of the disperser, and the diamete...

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Abstract

The invention provides lac resin nanoscale hydrosol and a preparation method thereof. The lac resin hydrosol is composed of lac resin and water. The method comprises the following steps: 1), dissolving lac resin in ethanol so as to obtain a lac resin ethanol solution; and 2), dripping the lac resin ethanol solution in deionized water, and distilling to remove ethanol. The lac resin hydrosol prepared by the method is small in particle size, good in dispersivity, storage stability, centrifugal stability and freeze-thaw stability and can reach national first level standard. The method has the advantages of simplicity and suitability for large-scale popularization and application.

Description

technical field [0001] The invention relates to a hydrosol and a preparation method thereof, in particular to a shellac resin hydrosol and a preparation method thereof. Background technique [0002] Shellac resin is a natural substance secreted by shellac insects - the main component of shellac. Shellac resin is a mixture of esters and polyesters composed of hydroxy fatty acids and hydroxysesquiterpene acids. Its average molecular weight is 1000, and its molecular formula is available C 60 H 90 O 5 It means that each molecule contains at least 1 free carboxyl group, 5 hydroxyl groups, 3 ester groups and 1 aldehyde group. [0003] Because the molecular structure of shellac resin contains a variety of functional groups such as hydroxyl, carboxyl, and aldehyde groups, it has some excellent properties based on its multifunctional chemical structure. Shellac resin has strong adhesion, good gloss, UV stability, good electrical insulation properties, both thermoplastic and ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L93/02
Inventor 张弘李凯徐涓陈晓鸣郑华冯颖张敏
Owner THE RES INST OF RESOURCES INSECTS RIRI OF THE CHINESE ACADEMY OF FORESTRY
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