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Antibacterial, antioxidant and pulping barrier coating resin for food packaging and preparation method of antibacterial, antioxidant and pulping barrier coating resin

A technology for food packaging and barrier coating, which is applied in coatings, paper coatings, textiles and papermaking, etc., can solve the problems of increasing the cost of coated paper, inability to take into account the performance, and not seen, and achieves the goal of being beneficial to food preservation and having good performance. Conducive to anti-corrosion and fresh-keeping, improving the effect of oil resistance

Pending Publication Date: 2022-04-15
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high barrier coating in the preparation method of the coated paper does not have oxygen barrier properties and is not suitable for flexible packaging
Moreover, this method requires two coats, which increases the cost of coated paper
[0006] In the current barrier coating technology, there is no repulpable single-coat resin solution that has high barrier properties such as water resistance, oil resistance, and oxygen barrier, while taking into account antibacterial and anti-oxidation properties.
Most of the solutions are multi-coating solutions and performance cannot be compromised

Method used

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  • Antibacterial, antioxidant and pulping barrier coating resin for food packaging and preparation method of antibacterial, antioxidant and pulping barrier coating resin
  • Antibacterial, antioxidant and pulping barrier coating resin for food packaging and preparation method of antibacterial, antioxidant and pulping barrier coating resin
  • Antibacterial, antioxidant and pulping barrier coating resin for food packaging and preparation method of antibacterial, antioxidant and pulping barrier coating resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] An antibacterial, anti-oxidation, and beating barrier coating resin for food packaging. The raw materials used in the synthesis process include:

[0053]

[0054] The preparation method of the antibacterial, anti-oxidation and beating barrier coating resin for food packaging comprises:

[0055] Step 1: Preparation of cetyl octadecyl salvianic acid modified acrylic acid crystals:

[0056] a. Add 8 parts of salvianic acid A to 12 parts of 95% concentrated sulfuric acid, stir until completely dissolved, then add 6 parts of cetyl stearyl alcohol for esterification reaction, control the reaction temperature at 30°C, and react for 2 hours , to obtain the reaction solution.

[0057] b. Pour the obtained reaction solution into rapidly stirred ice cubes to crystallize the obtained product and filter it.

[0058] c. Wash the filter cake with a mixed solution of ethanol ether (3:1) and saturated sodium carbonate, then remove ethanol and ether by evaporation, and finally dry i...

Embodiment 2

[0071] An antibacterial, anti-oxidation, and beating barrier coating resin for food packaging. The raw materials used in the synthesis process include:

[0072]

[0073] The preparation method of the antibacterial, anti-oxidation and beating barrier coating resin for food packaging comprises:

[0074] Step 1: Preparation of cetyl octadecyl salvianic acid modified acrylic acid crystals:

[0075] a. Add 5 parts of salvianic acid A to 8 parts of 98% concentrated sulfuric acid, stir until completely dissolved, then add 7.5 parts of cetyl stearyl alcohol for esterification reaction, control the reaction temperature at 35°C, and react for 2 hours , to obtain the reaction solution.

[0076] b. Pour the obtained reaction solution into rapidly stirred ice cubes to crystallize the obtained product and filter it.

[0077] c. Wash the filter cake with a mixed solution of ethanol ether (3:1) and saturated sodium carbonate, then remove ethanol and ether by evaporation, and finally dry ...

Embodiment 3

[0090] An antibacterial, anti-oxidation, and beating barrier coating resin for food packaging. The raw materials used in the synthesis process include:

[0091]

[0092] The preparation method of the antibacterial, anti-oxidation and beating barrier coating resin for food packaging comprises:

[0093] Step 1: Preparation of cetyl octadecyl salvianic acid modified acrylic acid crystals:

[0094] a. Add 10 parts of salvianic acid A to 15 parts of 98% concentrated sulfuric acid, stir until completely dissolved, then add 9 parts of cetyl stearyl alcohol for esterification reaction, control the reaction temperature at 35 °C, and react for 2.5 h, to obtain the reaction solution.

[0095] b. Pour the obtained reaction solution into rapidly stirred ice cubes to crystallize the obtained product and filter it.

[0096] c. Wash the filter cake with a mixed solution of ethanol ether (3:1) and saturated sodium carbonate, then remove ethanol and ether by evaporation, and finally dry it...

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Abstract

The invention provides a preparation method and application of antibacterial, antioxidant and pulping barrier coating resin for food packaging. A polymer used by the coating is obtained by copolymerizing tanshinic acid hexadecyl octadecyl ester modified acrylic acid, polyglucosamine modified acrylic acid and an acrylate monomer. The coating has excellent water resistance, oil resistance, oxygen resistance and the like, also has good antibacterial and anti-oxidation effects, and can play a good food fresh-keeping effect; in addition, excellent heat sealing is achieved, and self-heat sealing of packaging can be achieved. In addition, the coating also has pulping performance, does not affect recycling of packaging, especially paper packaging, and meets the requirement of sustainable development.

Description

technical field [0001] The invention relates to the technical field of preparation of water-based resins and coatings, in particular to a modified acrylate polymer emulsion that has barrier properties and has antibacterial and anti-oxidative effects, which can replace PE coating and does not affect the recovery of substrates, and its preparation method and apply. Background technique [0002] Plastic was called the greatest invention of the 20th century 100 years ago, but now it is called the worst invention of the 20th century because of its non-degradable nature that has brought great harm to human life and the ecological environment. The current global rate of plastic pollution may have irreversible effects, and plastic pollution is a global threat, according to a new study published in the journal Science by researchers from Sweden, Norway and Germany. Therefore, various countries are currently issuing corresponding bans on plastics, and are committed to reducing the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/58C08F220/30C08F220/06D21H19/20
Inventor 梁迪孙伟祖刘旭阳郝宝祥
Owner WANHUA CHEM GRP CO LTD
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