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A high temperature resistant water-based release agent with ultra-low coating dry weight

A water-based release, high temperature resistant technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the physical health and ecological environment damage of workers, difficult to meet the low coating of release agents, organic solvent toxicity and odor and other problems, to achieve the effect of good film-forming release effect, excellent solvent resistance, and excellent film-forming properties

Active Publication Date: 2021-07-06
GUANGDONG BANGGU CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, because the solvent-based release agent contains a large amount of volatile and toxic solvents, a large amount of toxic gases volatilize into the atmosphere during the production process, causing serious pollution to the ecological environment. Although the transfer film has been baked in an oven, most of the solvents have been Volatile, but there are still some solvent residues, which will cause serious harm to the human body when it is used for the outer packaging of cigarettes, alcohol, medicine, textiles, leather, etc.
The patent application number CN103254706A discloses a water-based release agent and a preparation method thereof. The formula components (parts by mass) of the water-based release agent are: 25-35 parts of water-based acrylic resin, 50-70 parts of deionized water, 1-4 parts of crosslinking agent, 0.1-0.5 parts of defoamer, 1-5 parts of ethylene glycol, 0.1-0.5 parts of modified polyurethane, 0.1-0.6 parts of ammonia water with a mass concentration of 15%, safe and environmentally friendly, no pollution, However, the coating dry weight of the currently prepared water-based release agent is relatively high, at 1.0g / m 2 Above, it is difficult to meet the requirements for the low coating of the release agent; the patent application number CN104695278A discloses a hot stamping release agent and its preparation method and application, and the composition of the hot stamping release agent in mass percentage: 1 - 6% oxidized polyethylene wax, 20-50% toluene, 10-20% xylene, 3-10% methylal and 10-40% methyl ethyl ketone, the coating dry weight of hot stamping release agent prepared by it 0.03-0.3g / m 2 , but the organic solvents used are toxic and smelly, which will cause great harm to the health of the staff and the ecological environment. Due to the high boiling point of the solvent, it is difficult to volatilize completely, and it will cause serious harm to the human body during contact.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A high-temperature-resistant water-based release agent with ultra-low coating dry weight, the raw materials include: 130 parts of water-based acrylic resin emulsion, 156 parts of water-based polyurethane resin emulsion, 50 parts of water-based nitrocellulose emulsion, 400 parts of water-based Silicone resin emulsion, 250 parts solvent;

[0069] The solvent is water and ethanol, and the weight ratio of water and ethanol is 1:4.5; the water-based acrylic resin emulsion is a water-based hydroxyacrylic acid polymer emulsion, the brand is VA-1038, purchased from Shandong Keyao Chemical Industry, the The water-based polyurethane resin emulsion is a water-based polycarbonate polyurethane polymer emulsion, the brand is Stahl in the Netherlands, purchased from PU-442, purchased from domestic agent Guangzhou Yangsong Trading; the water-based nitrocellulose emulsion is purchased from Yashi Blue, the trade mark is NATROSOL250; The water-based silicone resin emulsion is a water-base...

Embodiment 2

[0075] A high-temperature-resistant water-based release agent with ultra-low coating dry weight, the raw materials include: 100 parts of water-based acrylic resin emulsion, 50 parts of water-based polyurethane resin emulsion, 30 parts of water-based nitrocellulose emulsion, 120 parts of water-based Silicone resin emulsion, 200 parts solvent;

[0076] The solvent is water and ethanol, and the weight ratio of water and ethanol is 1:1; the water-based acrylic resin emulsion is a water-based hydroxyacrylic acid polymer emulsion, the brand is VA-1032, purchased from Shandong Keyao Chemical Industry, the The water-based polyurethane resin emulsion is a water-based polycarbonate polyurethane polymer emulsion, the brand is Stahl in the Netherlands, purchased from PU-442, purchased from domestic agent Guangzhou Yangsong Trading; the water-based nitrocellulose emulsion is purchased from Yashi Blue, the trade mark is NATROSOL250; The water-based silicone resin emulsion is a water-based m...

Embodiment 3

[0082] A high-temperature-resistant water-based release agent with ultra-low coating dry weight, the raw materials include: 150 parts of water-based acrylic resin emulsion, 300 parts of water-based polyurethane resin emulsion, 60 parts of water-based nitrocellulose emulsion, 720 parts of water-based Silicone resin emulsion, 300 parts solvent;

[0083] The solvent is water and ethanol, and the weight ratio of water and ethanol is 1:8; the water-based acrylic resin emulsion is a water-based hydroxyacrylic acid polymer emulsion, the brand is VA-1065, purchased from Shandong Keyao Chemical Industry, the The water-based polyurethane resin emulsion is a water-based polycarbonate polyurethane polymer emulsion, the brand is Stahl in the Netherlands, purchased from PU-408, and purchased from a domestic agent Guangzhou Yangsong Trading; the water-based nitrocellulose emulsion is purchased from Yashi, USA Blue, the trade mark is NATROSOL250; The water-based silicone resin emulsion is a w...

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Abstract

The invention belongs to the field of printing coatings, and provides a high-temperature-resistant water-based release agent with ultra-low coating dry weight. The raw materials include: water-based acrylic resin emulsion, water-based polyurethane resin emulsion, water-based nitrocellulose emulsion, and water-based silicone resin emulsion. , a solvent; and a preparation method and application of a high-temperature-resistant water-based release agent with ultra-low coating dry weight are also provided.

Description

technical field [0001] The invention belongs to the field of printing coatings, and more relates to a high-temperature-resistant water-based release agent with ultra-low coating dry weight, a preparation method and application thereof. Background technique [0002] Release agent, also known as anti-sticking agent, is used between the substrate and the pressure-sensitive adhesive layer. Its main function is to protect the pressure-sensitive adhesive layer coated on the substrate to prevent the pressure-sensitive adhesive layer from being polluted or sticky. Invalid for other items. Whether it's labels, baking paper, self-adhesive envelopes, or hygiene products, release coatings are the unsung heroes of the entire paper industry. Many everyday applications involving pressure sensitive adhesives would not exist without a release coating. [0003] At present, because the solvent-based release agent contains a large amount of volatile and toxic solvents, a large amount of toxic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D175/04C09D133/00C09D101/18C09D5/20C09D7/20
Inventor 唐影吕兴军颜昌琪蒋军吴敏达蔡爱文
Owner GUANGDONG BANGGU CHEM TECH
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