High peeling environment-friendly type aqueous transfer coating and use thereof

A transfer coating, environment-friendly technology, applied in the direction of paper coating, polyurea/polyurethane coating, coating, etc., can solve the problems of high content of volatile organic compounds, high production cost, environmental pollution of production and use, etc., and achieve low production cost , good printing adaptability and good solvent resistance

Inactive Publication Date: 2009-04-15
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing high-stripping transfer coatings are solvent-based systems, which use a large amount of organic solvents. On the one hand, the high content of volati

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of high stripping environment-friendly water-based transfer paint, this water-based transfer paint is made of following components and content (weight part):

[0031] components

parts by weight

Waterborne Resin Waterborne Polyurethane Resin

30

Defoamers Special Hydrocarbons

2

Co-solvent ethanol

30

Deionized water

37.7

[0032] pH regulator triethanolamine

0.3

[0033] The weight-average molecular weight Mw of the waterborne polyurethane resin is 10,000, and the softening point is 100°C;

[0034] The above-mentioned raw materials can be synthesized, dispersed, and blended to make a high-stripping, environmentally-friendly water-based transfer coating, which is suitable for applications that require particularly high peeling properties.

[0035] The water-based transfer coating obtained above is directly coated on the polyester (PET) film surface, after 90 ℃, 20 seconds of continu...

Embodiment 2

[0037] A kind of high stripping environment-friendly water-based transfer paint, this water-based transfer paint is made of following components and content (weight part):

[0038] components

parts by weight

Waterborne Resin Waterborne Polyurethane Resin

Waterborne Acrylic Resin

20

10

Anti-chafing additive polyethylene emulsified wax

7

Co-solvent ethanol

20

Alcohol-soluble metal complex dyes

2

Deionized water

41

[0039] The weight-average molecular weight Mw of the water-based resin is 100,000, the softening point of the water-based polyurethane resin is 250°C, and the glass transition temperature Tg of the water-based acrylic resin is -20°C;

[0040] The above-mentioned raw materials can be synthesized, dispersed, and blended to make a high-peeling, environmentally-friendly water-based transfer coating, which is suitable for applications that require high peeling properties and coloring require...

Embodiment 3

[0043] A kind of high stripping environment-friendly water-based transfer paint, this water-based transfer paint is made of following components and content (weight part):

[0044] components

parts by weight

Waterborne Resin Waterborne Polyurethane Resin

Waterborne Acrylic Resin

25

5

Wetting agent polyacrylic acid sodium salt

5

Rheology control agent associative polyurethane emulsion

2

Co-solvent ethanol

Butanol

15

10

Deionized water

38

[0045] The weight-average molecular weight Mw of the water-based resin is 40,000, the softening point of the water-based polyurethane resin is 150°C, and the glass transition temperature Tg of the water-based acrylic resin is 110°C;

[0046] The above raw materials can be synthesized, dispersed, and blended to make a high-peeling, environmentally friendly water-based transfer coating, which is suitable for production occasions where the coating equipment ...

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Abstract

The invention relates to a high peeling-off environment-friendly waterborne transfer coating and an application thereof, wherein, the waterborne transfer coating takes the following components with the contents (parts by weight) as raw materials: 10 to 60 parts of waterborne resin; 0 to 10 parts of auxiliary agent; 0 to 10 parts of rheological control agent; 0 to 30 parts of cosolvent; 0 to 10 parts of pigment; 30 to 80 parts of deionized water; and 0 to 5 parts of pH value regulator. Compared with the prior art, the waterborne transfer coating has the following advantages of: (1) environmental protection and cost advantages: the waterborne transfer coating takes water as a main dispersion medium and has no organic solvent basically, very low content of volatile organic compounds (VOCs) and low production cost; (2) good printing adaptability: compared with a the solvent system, a waterborne system is different on the resin and the polarity from the solvent, thereby having good solvent resistance and being more applicable to the printing modes (such as gravure printing and screen printing) with higher requirements on the solvent resistance; and (3) the waterborne transfer coating can be directly used for replacing the existing solvent high peeling-off transfer coating by the pilot scale production confirmation.

Description

technical field [0001] The invention relates to a water-based transfer paint, in particular to a high-peeling environment-friendly water-based transfer paint and its application. Background technique [0002] Since the 1980s, the transfer aluminum plating process has set off a revolution in the packaging material industry by virtue of its advantages such as simpler process and lower cost. The tailor-made coating for transfer aluminum plating (hereinafter referred to as transfer coating) has been obtained A large number of promotional applications. The basic performance of the transfer coating is its peelability, that is, how easy it is to peel cleanly from the base film (PET polyester film, OPP stretched polypropylene film, etc.). The quality of peelability can generally be characterized by the peeling force between the transfer coating and the base film. A lot of practical experience shows that the transfer coating with a large peeling force is prone to the problem of unc...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D175/04C09D129/04D21H19/04D21H19/58D21H19/62D21H19/60
Inventor 虞明东陈智谢允斌
Owner SHANGHAI WEIKAI CHEM
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