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Preparation method of environment-friendly packaging material

A packaging material and environmental protection technology, applied in the direction of coating, can solve the problems of poor peelability, single protection performance, low coating film strength, etc., and achieve the effects of high production efficiency, improved appearance, and improved mechanical strength

Inactive Publication Date: 2017-06-09
重庆市共赢包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing water-based protective coatings still have the disadvantages of low film strength, poor peelability and single protective performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of environment-friendly packaging material comprises the following steps:

[0024] 1) Add toluene diisocyanate, polypropylene glycol, dibutyltin dilaurate, triethylamine and butanone into the first reaction kettle at room temperature, and then raise the temperature to 58~70°C to make them in the first reaction kettle Mix the reaction until the value of -NCO% in the system does not change, and obtain the primary product for subsequent use;

[0025]2) Control the temperature at 80°C, add dimethylolpropionic acid to the primary product obtained in step 1) and react for 100~130min, lower the temperature to 38~43°C, add triethylamine, and then control the temperature at 68~70°C, the pressure is controlled at -0.095~-0.085 MPa, and the vacuum distillation is carried out until the solid content reaches 80~95%, and the secondary product is obtained; the secondary product is added to the second reaction kettle filled with distilled water and made The seco...

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PUM

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Abstract

The invention discloses a preparation method of an environment-friendly packaging material. The preparation method comprises the following processes: (1) adding toluene diisocynate and the like into a first reaction kettle at the room temperature to obtain a primary product; (2) adding dimethylolpropionic acid into the primary product, and then adding triethylamine to prepare aromatic waterborne polyurethane emulsion; (3) adding silica sol and the aromatic waterborne polyurethane emulsion into a third reaction kettle at the room temperature to obtain mixed emulsion for later use; (4) adding right amount of acrylic copolymer potassium salt and the like into the mixed emulsion to obtain a crude product; (5) adding talcum powder into the crude product to obtain the environment-friendly packaging material. The environment-friendly packaging material prepared by the method has the advantages of being simple and convenient to operate and high in production efficiency, and can be used for effectively and temporarily sealing and protecting an object to be protected.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a preparation method of an environmentally friendly packaging material. Background technique [0002] In order to prevent the materials or semi-products exposed to the atmosphere from being polluted, corroded and damaged, and prolong their service life, they are usually coated with good protective and peelable coatings on their surfaces for effective and temporary maintenance. Archive protection. In this way, it can not only isolate the invasion of air, salt spray, and microorganisms from the outside to achieve anti-corrosion effect; but also achieve the effect of cleaning and decontamination by adsorbing pollutants. Compared with solvent-based protective coatings, water-based protective coatings are safer and more environmentally friendly, so they are widely used in the field of product packaging and decoration. However, the existing water-based protective coatings sti...

Claims

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Application Information

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IPC IPC(8): C08G18/10C08G18/66C08G18/48C08G18/76C09D175/08C09D7/12
CPCC08G18/10C08G18/4825C08G18/6685C08G18/6692C08G18/7614C08L2205/02C08L2205/025C08L2205/035C09D7/61C09D7/65C09D175/08
Inventor 谭春芳
Owner 重庆市共赢包装制品有限公司
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