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Preparation method of protective packaging film composition

A composition and packaging film technology, applied in coatings, anti-corrosion coatings, etc., can solve the problems of poor peelability, low coating film strength, and single protective performance.

Inactive Publication Date: 2017-07-07
蒋正红
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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

[0024] The preparation method of protective packaging film composition comprises the following steps:

[0025] 1) Put the raw material polypropylene glycol in a drying oven for dehydration for 450-500 minutes, and control the drying temperature at 110-125°C for later use; put the raw material dimethylolpropionic acid in an oven and dry it for 100-150 minutes, and control the drying temperature at 110-125°C. 125°C, set aside; dehydrate the raw materials triethylamine and butanone with molecular sieves for 5-7 days, set aside;

[0026] 2) Add toluene diisocyanate, dibutyltin dilaurate, polypropylene glycol, triethylamine and butanone dehydrated in step 1) into the first reaction kettle at room temperature, and then raise the temperature to 58-70°C to make They are mixed and reacted in the first reactor until the -NCO% value in the system does not change, and the primary product is obtained for subsequent use;

[0027] 3) Control the temperature at 80°C, add dimethylol propionic a...

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PUM

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Abstract

The invention discloses a preparation method of a protective packaging film composition. The preparation method comprises the following procedures: 1) dehydrating and drying the raw material; 2) adding toluene diisocynate and the like into a first reaction kettle at the room temperature to obtain a primary product; 3) adding dimethylolpropionic acid into the primary product, then adding triethylamine to obtain an aromatic waterborne polyurethane emulsion; 4) adding a silica solution and the aromatic waterborne polyurethane emulsion into a third reaction kettle at the room temperature to obtain a mixed emulsion; 5) adding proper amount of acrylic copolymer sylvite and the like into the mixed emulsion to obtain a crude product; and 6) adding talcum powder into the crude product to obtain the protective packaging film composition. The prepared packaging film composition can effectively protect a protected article in a closed manner, and the protected article is prevented from being polluted, corroded or damaged. Meanwhile, a coating is further higher in stability, stronger in cohesion, excellent in peeling performance, and higher in coating strength.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a preparation method of a protective packaging film composition. 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 still have ...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D7/06C09D5/08C08G18/66C08G18/48C08G18/34C08G18/32C08G18/10C08G18/24C08G18/18C09D7/47
CPCC08G18/10C08G18/165C08G18/18C08G18/246C08G18/3228C08G18/348C08G18/48C08G18/6685C08G18/6692C08L2205/02C08L2205/035C09D5/08C09D7/47C09D7/61C09D7/65C09D175/08C08L83/04C08L33/04C08L33/02C08K3/34C08K3/36
Inventor 蒋正红
Owner 蒋正红
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