Preparation method of water-tolerant packaging film composition

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

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 disadvant

Method used

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Embodiment 1

[0023] A method for preparing a water-resistant packaging film composition, comprising the following steps:

[0024] 1) Add isophorone diisocyanate, polypropylene glycol, polyethylene glycol, dibutyltin dilaurate and butanone into 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;

[0025]2) Control the temperature at 80°C, add dimethylol propionic acid to the primary product obtained in step 1) and react for 220~260min, then lower the temperature to 38~43°C, add triethylamine to obtain the secondary product ; Add secondary products to the second reaction kettle filled with distilled water and disperse the secondary products in distilled water, then add diethylenetriamine aqueous solution to obtain aliphatic water-based polyurethane emulsion;

[0026] 3) Add silica sol and the aliphatic water...

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Abstract

The invention discloses a preparation method of a water-tolerant packaging film composition. The preparation method comprises the following procedures: (1) adding isophorone diisocyanate and the like into a first reaction kettle at the room temperature, so as to obtain a primary product; (2) sequentially adding dimethylolpropionic acid and triethylamine into the primary product, so as to prepare an aliphatic waterborne polyurethane emulsion; (3) adding silica sol and the aliphatic waterborne polyurethane emulsion into a third reaction kettle at the room temperature, so as to obtain a mixed emulsion for later use; (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 water-tolerant packaging film composition. By utilizing the water-tolerant packaging film composition prepared by virtue of the preparation method, a protected object can be effectively closed and protected, and the pollution, corrosion and damage of the object are prevented. Meanwhile, the water-tolerant packaging film composition further has relatively strong cohesion, good peelable property and relatively high film strength.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a preparation method of a water-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 coatings still...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/20C09D7/12C09D7/06C09D5/08C08G18/75C08G18/66C08G18/48C09D7/47
CPCC08G18/12C08G18/4808C08G18/755C08K2201/011C08L2205/02C08L2205/025C08L2205/035C09D5/08C09D5/20C09D7/47C09D7/61C09D7/63C09D7/65C09D175/08C08L33/02C08L83/04C08K13/02C08K3/36C08K2003/2241C08K3/34C08K5/42C08G18/348C08G18/3228
Inventor 谭春芳
Owner 重庆市共赢包装制品有限公司
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