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Preparation method of oil-resistant packaging film composition

A packaging film and composition technology, applied in the field of packaging and decoration, can solve the problems of low coating film strength, single protective performance, poor peelability, etc., achieve high coating film strength, improve appearance, and prevent pollution

Inactive Publication Date: 2017-06-27
宋容
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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 oil-resistant packaging film composition includes the following steps:

[0025] 1) Add isophorone diisocyanate, polypropylene glycol, polyethylene glycol, dibutyltin dilaurate and methyl ethyl ketone to the first reactor at room temperature, and then raise the temperature to 58~80℃ to make them in the first reactor. A reaction kettle is mixed and reacted until the -NCO% value in the system no longer changes, and the primary product is obtained for use;

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

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

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Abstract

The invention discloses a preparation method of an oil-resistant packaging film composition, which includes the following steps: 1) adding isophorone diisocyanate and the like into a first reaction kettle at room temperature to obtain a primary product; 2) adding di Methylolpropionic acid, and then carry out vacuum distillation to obtain secondary products; 3) Disperse the secondary products in the second reaction kettle, add diethylenetriamine aqueous solution to prepare aliphatic water-based polyurethane emulsion; 4) Add to the second reaction kettle Add silica sol and aliphatic water-based polyurethane emulsion to the third reaction kettle to obtain a mixed emulsion for later use; 5) Add an appropriate amount of potassium salt of acrylic acid copolymer to the fourth reaction kettle to obtain a mixed bottom liquid; 6) Add it to the mixed bottom liquid The mixed emulsion is added to obtain an oil-resistant packaging film composition. The packaging film composition prepared by the invention has strong cohesive force, good peelability, high coating film strength and good safety and environmental protection performance.

Description

Technical field [0001] The invention relates to the field of packaging and decoration, in particular to a method for preparing an oil-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 to prolong their service life, they are usually coated with a good protective and peelable paint on their surfaces for effective and temporary treatment. Archive protection. In this way, it can not only isolate the outside air, salt spray, and microorganisms from intruding to achieve the anti-corrosion effect; but also achieve the cleaning and decontamination effect by adsorbing pollutants. Compared with solvent-based protective coatings, water-based protective coatings are more safe and environmentally friendly, so they are widely used in product packaging and decoration fields. However, the existing water-based protective coatings still have the disadvanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D183/12C09D183/04C09D133/02C09D7/12C08G18/12C08G18/48C08G18/75C08G18/66C08G18/34
CPCC09D175/08C08G18/12C08G18/348C08G18/4808C08G18/4825C08G18/4833C08G18/6692C08G18/755C08L2205/02C08L2205/025C08L2205/035C09D7/61
Inventor 宋容
Owner 宋容
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