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Preparation method of acrylate modified polyurethane protecting packaging film composition

An acrylic and polyurethane technology, applied in the field of packaging and decoration, can solve problems such as poor peelability, low coating film strength, and single protective performance

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 acrylic modified polyurethane protective packaging film composition comprises the following steps:

[0024] 1) Add ammonium persulfate into a flask containing distilled water at room temperature, stir and mix at a speed of 100~200r / min for 10~20min to obtain an initiator solution for use; add toluene disulfide to the first reaction kettle at room temperature Isocyanate, polypropylene glycol, polyethylene glycol, dibutyltin dilaurate, triethylamine and methyl ethyl ketone, then raise the temperature to 58~70°C, let them mix and react in the first reactor to the -NCO% value in the system No longer change, get the primary product, spare;

[0025] 2) Control the temperature at 80°C, add dimethylolpropionic acid to the primary product obtained in step 1) and react for 100~130min, then lower the temperature to 58~63°C, add hydroxyethyl acrylate to the first reaction kettle Ester and react for 60~100min; then lower the temperature to 38~43°C, add tri...

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Abstract

The invention discloses a preparation method of an acrylate modified polyurethane protecting packaging film composition. The preparation method comprises the following procedures: (1) adding toluene diisocynate and the like into a first reaction kettle at the room temperature, so as to obtain a primary product; (2) adding dimethylolpropionic acid and the like into the primary product, so as to obtain an acrylate modified aromatic waterborne polyurethane emulsion; (3) adding silica sol and the acrylate modified aromatic waterborne polyurethane emulsion into a third reaction kettle at the room temperature, so as to obtain a mixed emulsion; (4) adding a proper amount of acrylic copolymer sylvite and the like into a fourth reaction kettle containing distilled water, so as to obtain a mixed base solution; and (5) adding the mixed emulsion into the mixed base solution, so as to obtain the acrylate modified polyurethane protecting packaging film composition. By utilizing the packaging film composition prepared by virtue of the preparation method, a to-be-protected object can be effectively closed and protected, and the pollution, corrosion and damage of the object are prevented. The packaging film composition further has excellent water tolerance, relatively high stability, relatively strong cohesion, good peelable property and relatively high paint film strength.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a preparation method of an acrylic modified polyurethane 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...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/12C08G18/48C08G18/66C08G18/76C08G18/67C08G18/18C08G18/24
Inventor 谭春芳
Owner 重庆市共赢包装制品有限公司
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