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Preparation method of high temperature-resistant packaging film composition

A packaging film, high temperature resistant technology, applied in the field of packaging and decoration, can solve the problems of single protection performance, low coating film strength, poor peelability, etc., to achieve the effect of improving appearance, high coating film strength, and preventing pollution

Inactive Publication Date: 2017-06-27
张世禄
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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 the high temperature resistant packaging film composition comprises the following steps:

[0025]1) Add isophorone diisocyanate, polypropylene glycol, polyethylene glycol, dibutyltin dilaurate and butanone to the first reaction kettle at room temperature, and then raise the temperature to 58~80°C to make them Mix and react in the reactor until the value of -NCO% in the system does not change, and obtain the primary product for subsequent use;

[0026] 2) Control the temperature at 80°C, add dimethylolpropionic acid to the primary product obtained in step 1) and react for 220~260min, then lower the temperature to 38~43°C, add triethylamine; then control the temperature At 79~80°C, the pressure is controlled at -0.095~-0.085 MPa, and vacuum distillation is carried out until the solid content reaches 80~95%, to obtain secondary products and set aside;

[0027] 3) Add the secondary product obtained in step 2) into the second reaction kettle filled...

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Abstract

The invention discloses a preparation method of a high temperature-resistant packaging film composition. The method comprises the following steps: 1, adding isophorone diisocyanate into a first reaction kettle at room temperature to obtain a primary product; 2, adding dimethylolpropionic acid to the primary product, and carrying out reduced pressure distillation to obtain a secondary product; 3, dispersing the secondary product in a second reaction kettle, and adding an aqueous diethylenetriamine solution to prepare an aliphatic aqueous polyurethane emulsion; 4, adding silica sol and the aliphatic aqueous polyurethane emulsion into a third reaction kettle to prepare a mixed emulsion for later use; 5, adding a proper amount of a potassium salt of an acrylic copolymer into a fourth reaction kettle to obtain a mixed base solution; and 6, adding the mixed emulsion to the mixed base solution to obtain the high temperature-resistant packaging film composition. The high temperature-resistant packaging film composition prepared through adopting the method has the advantages of strong cohesive force, good strippable property, high coating strength and good safety and environmentally-friendly performance.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a preparation method of a high-temperature-resistant 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 coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/34C08G18/32C08G18/12C09D175/08C09D7/12C09D7/06C09D5/08C09D7/47
CPCC08G18/0823C08G18/12C08G18/3228C08G18/348C08G18/4804C08G18/6685C08G18/6692C08G18/755C08L2205/035C09D5/08C09D7/47C09D7/61C09D7/63C09D7/65C09D175/08C08L33/02C08L83/04C08K13/02C08K5/42C08K3/36C08K2003/2241
Inventor 张世禄
Owner 张世禄
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