Water-based PET under-coating paint and preparation method thereof

A water-based and coating technology, applied in the direction of polyester coatings, coatings, primers, etc., can solve the problems of increasing process steps and inconvenient operation, and achieve the effects of improving production efficiency, high production efficiency, and short baking time

Inactive Publication Date: 2018-12-14
TIANJIN BAOXINGWEI TECH
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paint is a water-based paint, but to achieve the ideal adhesion, it must be dried a...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] The present invention also provides a kind of preparation method for preparing above-mentioned water-based PET primer, comprising the following steps:

[0045] S1. Dissolve the components with poor compatibility with the water-based polyester resin in the co-solvent, add deionized water, control the dispersion speed to 350-450r / min and stir evenly to obtain a dispersion system;

[0046] S2. Control the dispersion speed to 350-750r / min, add the water-based polyester resin and other components into the dispersion system under stirring, and stir evenly to obtain the water-based PET primer.

[0047] Preferably, in step S2, when the water-based polyester resin is a solid resin, the solid resin is dissolved into a resin solution with a content of 33% in hot water at 85°C before use, and then mixed in step S2, in order to accelerate the water-based To dissolve the polyester resin in hot water, a pH regulator can be added to the hot water, and the pH regulator is ammonia water....

Embodiment 1

[0049] A kind of water-based PET primer, is characterized in that, is made up of following component by weight:

[0050] 40 parts of water-based polyester resin;

[0051] 3 parts of co-solvent;

[0052] 5 parts of deionized water;

[0053] 0.1 part of defoamer;

[0054] 2 parts curing agent;

[0055] Catalyst 0.1 part;

[0056] Wetting agent 0.1 part;

[0057] Anti-sticking agent 0.1 part.

[0058] Preferably, the water-based polyester resin is a water-based saturated polyester resin, the number-average molecular weight Mn of the water-based saturated polyester resin is 10000, and the glass transition temperature Tg is 20°C.

[0059] Preferably, the co-solvent is at least one of alkyl alcohol, alcohol ether, ketone or alcohol ether acetate.

[0060] Preferably, the defoamer is at least one of mineral oil defoamer, polyether defoamer, organosiloxane defoamer or polyether modified organosiloxane defoamer.

[0061] Preferably, the catalyst is at least one of a strong acid...

Embodiment 2

[0070] A kind of water-based PET primer, is characterized in that, is made up of following component by weight:

[0071] 75 parts of water-based polyester resin;

[0072] 15 parts of co-solvent;

[0073] 57 parts of deionized water;

[0074] 0.5 part of defoamer;

[0075] 10 parts of curing agent;

[0076] 2 parts catalyst;

[0077] 1 part of wetting agent;

[0078] 1 part anti-sticking agent.

[0079] Preferably, the water-based polyester resin is a water-based saturated polyester resin, the number-average molecular weight Mn of the water-based saturated polyester resin is 18000, and the glass transition temperature Tg is 70°C.

[0080] Preferably, the co-solvent is at least one of alkyl alcohol, alcohol ether, ketone or alcohol ether acetate.

[0081] Preferably, the defoamer is at least one of mineral oil defoamer, polyether defoamer, organosiloxane defoamer or polyether modified organosiloxane defoamer.

[0082] Preferably, the catalyst is at least one of a strong ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Glass transition temperatureaaaaaaaaaa
Glass transition temperatureaaaaaaaaaa
Glass transition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention discloses water-based PET under-coating paint and a preparation method thereof. The water-based PET under-coating paint is of preferable applicability for a PET thin film, particularly when the surface tension of the PET thin film needing to be coated is greater than 40 dyne, a curing agent does not need to be added in a formula of the water-based PET under-coating paint, the bakingtime can be shorter, and the production efficiency is higher. Moreover, ideal adhesive force can be reached without the need of UV curing after baking, the water-based PET under-coating paint is moreconvenient for industrial production, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of water-based paint, in particular to a water-based PET primer and a preparation method thereof. Background technique [0002] UV light-curing printing has high color saturation and high gloss of printed products, especially in high-end product packaging. However, when printing on a non-absorbent substrate such as PET, the adhesion of UV photocurable ink is low, and deinking is prone to occur. [0003] Corona treatment and primer treatment are currently the two most commonly used methods for increasing the adhesion of UV light-curable inks on PET plastics. Corona treatment has the disadvantages of poor stability and huge investment, and is suitable for continuous production processes. The primer treatment has good stability, the surface tension of the treated PET film is not affected by time, and the cost is low, no special equipment and process are required, and the application range is wide. [0004] CN201210408...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09D167/00C09D7/65C08J7/04C08L67/02
CPCC08J7/0427C08J2367/02C08J2467/00C09D5/002C09D7/65C09D167/00C08L83/04C08L91/06
Inventor 司荣美潘中海刘彩风
Owner TIANJIN BAOXINGWEI TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap