Water-based coating composition for cold-chain container

A water-based paint and container technology, applied in the field of paint, can solve the problems of increasing application difficulty, increasing production cost, paint sagging, etc., and achieving the effects of good sag resistance, cost saving and good adhesion

Inactive Publication Date: 2021-10-19
CHUZHOU JINQIAO TEXAS NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the periodical "Painting Industry" Volume 48 No. 6 published on June 31, 2018, a water-based three-coat box exterior paint is provided, including water-based epoxy zinc-rich coatings, water-based intermediate paints, and water-based acrylic topcoats, although The composite paint film has certain anti-corrosion properties and weather resistance, but due to the multi-layer design, it not only increases the difficulty of application, causes the paint to easily sag and shrinkage, but also increases the production cost

Method used

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  • Water-based coating composition for cold-chain container
  • Water-based coating composition for cold-chain container

Examples

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Effect test

preparation example Construction

[0025] The preparation method of resin composition in following each example is:

[0026] The preparation method of the primer coating is to stir and mix the water-based epoxy emulsion and the water-based polyurethane emulsion at 20°C to 80°C, and then add the water-based epoxy curing agent, zinc powder, graphene, leveling agent, thixotropic assistant, etc. agent, deionized water, and stir evenly with a high-speed disperser;

[0027] The preparation method of the topcoat coating is to stir and mix the water-based epoxy emulsion, water-based acrylic emulsion, water-based polyurethane emulsion, and methylated melamine formaldehyde resin at 20°C to 80°C, and then add epoxy diluent, filler, Leveling agent, defoamer, stir evenly with a high-speed disperser.

Embodiment 1

[0029] Used in water-based coating compositions for cold chain containers, the primer coating components include: 8 parts of water-based epoxy emulsion, 8 parts of water-based polyurethane emulsion, 6 parts of water-based epoxy curing agent, 50 parts of zinc powder, 5 parts of graphene, 1 part of leveling agent, 1 part of thixotropic additive, 14 parts of deionized water;

[0030] Topcoat components include: 10 parts of water-based epoxy emulsion, 10 parts of water-based acrylic emulsion, 15 parts of water-based polyurethane emulsion, 2 parts of methyl etherified melamine formaldehyde resin, 1 part of epoxy diluent, 20 parts of filler, 0.1 part of leveling agent , 0.1 part of defoamer.

[0031] Among them, the water-based epoxy emulsion is Jinan Yisheng YS8009; the water-based polyurethane emulsion is DSM R-961; the water-based acrylic emulsion is DSM XK-14; the water-based epoxy curing agent is Yixing Yanglin V388 curing agent; defoaming agent Dow Corning DC65 defoamer; fill...

Embodiment 2

[0033] Used in water-based coating compositions for cold chain containers, the primer coating components include: 10 parts of water-based epoxy emulsion, 10 parts of water-based polyurethane emulsion, 10.5 parts of water-based epoxy curing agent, 57.5 parts of zinc powder, 7.5 parts of graphene, 1.5 parts of leveling agent, 1.5 parts of thixotropic additive, 20 parts of deionized water;

[0034] Topcoat components include: 12 parts of water-based epoxy emulsion, 12 parts of water-based acrylic emulsion, 22.5 parts of water-based polyurethane emulsion, 5.5 parts of methyl etherified melamine formaldehyde resin, 2 parts of epoxy thinner, 25 parts of filler, 1 part of leveling agent , 1 part of defoamer.

[0035] Among them, the water-based epoxy emulsion is Wuhan Luosenjie LS261; the water-based polyurethane emulsion is Anda Huatai AH1502; the water-based acrylic emulsion is Chongqing Kaiyin Chemical 8171; the water-based epoxy curing agent is Jinan Baijin 593 curing agent; the ...

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Abstract

The invention discloses a water-based coating composition for a cold chain container. The water-based coating composition mainly comprises a primer and a finish paint, wherein a primer coating mainly comprises a water-based epoxy emulsion, a water-based polyurethane emulsion, a water-based epoxy curing agent, zinc powder, graphene, a leveling agent and deionized water; and a finish paint coating mainly comprises a water-based epoxy emulsion, a water-based acrylic emulsion, a water-based polyurethane emulsion, an epoxy diluent, a filler, a leveling agent, a defoaming agent, a thixotropic additive and deionized water. According to the water-based coating composition for the cold-chain container, the synergistic effect of the multi-component mixed resin is exerted, the adhesive force of the primer and the finish paint is good, a middle-layer coating is omitted, and cost is saved; and meanwhile, the coating composition has the good adhesive force, corrosion resistance, impact resistance, temperature change resistance and sagging resistance, and is especially applicable to a metal surface of the cold-chain container.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a water-based coating composition for cold chain containers Background technique [0002] Since April 1, 2017, the coating production lines of national standard dry container manufacturers have changed from solvent-based coating systems to water-based coating systems, thus opening the first year of large-scale use of water-based container coatings. The large-scale promotion of water-based container coatings has brought great changes to the entire industrial coatings market. The application of water-based, high-solid-content and other environmentally friendly coatings has been greatly developed, driving construction machinery, transportation equipment and other industries to make great strides towards environmental protection coatings step forward. [0003] In the periodical "Painting Industry" Volume 48 No. 6 published on June 31, 2018, a water-based three-coat box exterior pai...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/04C09D5/10C09D7/61C09D133/04C09D161/32C09D7/65B05D1/38B05D7/00B05D7/16
CPCC09D163/00C09D175/04C09D5/106C09D7/61C09D7/65B05D7/16B05D7/544B05D7/546B05D1/38C08K2003/0893C08L75/04C08K3/08C08K3/042C08L63/00C08L33/04C08L61/32C08L75/02C08K3/346C08K3/36
Inventor 马晓东
Owner CHUZHOU JINQIAO TEXAS NEW MATERIALS CO LTD
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