Multifunctional modified palm wax emulsion, its preparation method and application

A palm wax, multi-functional technology, applied in the field of papermaking, can solve the problems of affecting the final quality of products and being susceptible to intrusion by microorganisms, and achieve the effects of simple and mature production process, low production cost, and easy operation control.

Inactive Publication Date: 2017-04-12
江门市长天贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fly in the ointment is that palm wax itself is easily infested by microorganisms in the process of its industrial application, thus affecting the final quality of the product

Method used

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  • Multifunctional modified palm wax emulsion, its preparation method and application
  • Multifunctional modified palm wax emulsion, its preparation method and application
  • Multifunctional modified palm wax emulsion, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 2.5 g of solid palm wax and 110 ml of deionized water into a 250 ml beaker. The mixture was heated to 80°C in an oil bath, and then stirred with a 6000 rpm high-speed mixer for 8 minutes. The obtained palm wax emulsion was then placed in an ice water bath to cool, and named CW. Similarly, if 30 mg of surfactant lauryl dimethylamine hydantoin is added in the initial preparation process, another palm wax emulsion can be obtained, named CW-S.

[0038] First, prepare two 100 ml 2.5 wt% palm wax emulsions or their derivatives CW and CW-S, each of which is 100 ml according to the above method. Then add 0.36 grams of PHGH antibacterial agent, 2 grams of coupling reagent 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 3 grams of activator N-hydroxysuccinimide. Amine, control the temperature to react at 25°C, and adjust the pH of the emulsion to 7.5 with sodium bicarbonate. The mixture was maintained at a pH of 7.5 and stirred at room temperature with a magne...

Embodiment 2

[0040] Add 2.5 g of solid palm wax, 75 ml of deionized water and 25 ml of dimethylformamide to a 250 ml beaker. The mixture was heated to 65°C in an oil bath and stirred with a 9000 rpm high-speed mixer for 11 minutes. The obtained palm wax emulsion was then placed in an ice water bath to cool, and named CW. Similarly, if 50 mg of the surfactant, didecyl dimethyl ammonium chloride is added in the initial preparation process, another palm wax emulsion can be obtained, named CW-S.

[0041] First, prepare two 100 ml 2.5 wt% palm wax emulsions or their derivatives CW and CW-S, each of which is 100 ml according to the above method. Subsequently, 0.13 grams of PHGH antibacterial agent, 0.8 grams of coupling reagent N,N'-dicyclohexylcarbodiimide and 1.5 grams of activator 1-hydroxybenzotriazole were added respectively, and the reaction was carried out at 40°C under controlled temperature. The pH of the emulsion was adjusted to 8.0 with sodium bicarbonate. The mixture was maintained a...

Embodiment 3

[0043] Add 2.5 g of solid palm wax, 80 ml of deionized water and 30 ml of methanol into a 250 ml beaker. The mixture was heated to 55°C in an oil bath and stirred with a 12000 rpm high-speed mixer for 14 minutes. The obtained palm wax emulsion was then placed in an ice water bath to cool, and named CW. Similarly, if 65 mg of surfactant sodium lauryl sulfate is added in the initial preparation process, another palm wax emulsion can be obtained, named CW-S.

[0044] First, prepare two 100 ml 2.5 wt% palm wax emulsions or their derivatives CW and CW-S, each of which is 100 ml according to the above method. Subsequently, 0.25 g of PHGH antibacterial agent, 1 g of coupling reagent N,N'-dicyclohexylcarbodiimide and 1.8 g of activator 3-hydroxy-1,2,3-benzotriazine-4 (3H )-Ketone, control the temperature to react at 45°C and adjust the pH of the emulsion to 8.5 with sodium hydroxide. The mixture was maintained at a pH value of 8.5 and stirred at room temperature with a magnetic stirre...

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Abstract

The invention discloses a multifunctional modified palm wax emulsion as well as a preparation method and an application thereof. The preparation method comprises the following steps: mixing solid palm wax with a solvent to form a mixture, then heating and adequately stirring the mixture to form an emulsion, and then cooling to obtain a palm wax emulsion; adding an antibacterial agent polyhexamethyleneguanidine chloride, a coupling reagent and an activating agent in the palm wax emulsion, adequately reacting at a selected temperature and under a neutral or weakly basic condition, and carrying out dialysis separation on the obtained mixed reaction solution to obtain the multifunctional modified palm wax emulsion with a high grafting rate. The multifunctional modified palm wax emulsion disclosed by the invention has both antibacterial and vapour barrier effects, and is capable of greatly reducing the vapour transmission rate of paper, achieving an antibacterial rate not less then 99% and remarkably increasing the wet-and-dry strength of the paper in case of being applied as a paper treatment preparation; meanwhile, the preparation process is simple and mature, low in production cost, easy to control, and high in application value.

Description

Technical field [0001] The invention relates to a modified palm wax emulsion, in particular to a guanidine salt grafted palm wax emulsion obtained by a high grafting rate covalent bond coupling method and a preparation method and application thereof, belonging to the technical field of papermaking. Background technique [0002] Water vapor barrier performance is an important indicator of food packaging materials. Wrapping paper with water vapor barrier properties can prevent water vapor released from foods from penetrating the pores of the paper, thereby achieving the effect of reducing water loss and prolonging food preservation time. In the past few decades, food packaging materials that use petroleum as a raw material source have occupied a leading position in the packaging market with their high mechanical strength and excellent water vapor barrier properties. However, in the face of food safety and increasingly serious environmental problems, people have begun to pay more a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/14D21H21/36D21H21/16D21H19/18
Inventor 张丹余光华肖惠宁龙柱王建华
Owner 江门市长天贸易有限公司
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