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A kind of low pigment, anti-yellowing PE transparent primer and preparation method thereof

A transparent primer and anti-yellowing technology, applied in the field of coatings, can solve the problems that PE coatings are not very good in yellowing resistance, the coating film cannot be light-colored or even colorless, and PU coatings cannot be applied thickly at one time. Wide market application prospects, high fullness, and the effect of not easy to change color

Active Publication Date: 2021-07-30
东莞大宝化工制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, PU coatings can easily meet the above requirements, but PU coatings cannot be thickly coated at one time, which will inevitably lead to cumbersome procedures, time-consuming and labor-intensive shortcomings
The traditional PE coating has the advantage of one-time thick coating, but the PE accelerator used is a divalent cobalt compound, which will generate a trivalent cobalt compound during the reaction process and thus present a blue-green phase, resulting in a coating film that cannot be light-colored or even non-toxic. color
There are various anti-greening additives on the market to solve this phenomenon, but without exception, these anti-greening additives will seriously affect the drying of the resin and the polishability of the paint, especially in winter when the temperature is low.
In addition, the yellowing resistance of PE coating itself is not very good.

Method used

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  • A kind of low pigment, anti-yellowing PE transparent primer and preparation method thereof
  • A kind of low pigment, anti-yellowing PE transparent primer and preparation method thereof
  • A kind of low pigment, anti-yellowing PE transparent primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A low-pigment, anti-yellowing PE transparent primer, which consists of a main agent component, a PE accelerator component and a PE initiator in a mass ratio of 100:0.4:1;

[0052] Wherein, the main ingredient component is made of the following raw materials in parts by weight:

[0053]

[0054] Wherein, the PE accelerator component is made up of following raw materials in parts by weight:

[0055] Potassium drier 35 parts

[0056] 65 parts of cobalt drier.

[0057] Among them, the PE initiator is methyl ethyl ketone peroxide; the wetting agent is Tego WET 245 wetting agent; the inhibitor is hydroquinone; the defoamer is BYK 141 defoamer; the anti-settling agent is M-5 anti-settling agent. The unsaturated polyester resin in this embodiment is selected from Dongguan Yonghang Plastic Raw Materials Co., Ltd. with a product model of 2308A unsaturated polyester resin.

[0058] Wherein, the potassium drier is potassium octoate; the cobalt drier is cobalt isooctanoate.

...

Embodiment 2

[0068] A low-pigment, anti-yellowing PE transparent primer, which is composed of a main agent component, a PE accelerator component and a PE initiator with a mass ratio of 100:0.3:0.8;

[0069] Wherein, the main ingredient component is made of the following raw materials in parts by weight:

[0070]

[0071] Wherein, the PE accelerator component is made up of following raw materials in parts by weight:

[0072] Potassium drier 30 parts

[0073] 70 parts of cobalt drier.

[0074] Among them, the PE initiator is methyl ethyl ketone peroxide; the wetting agent is Tego WET 245 wetting agent; the inhibitor is hydroquinone; the defoamer is BYK 141 defoamer; the anti-settling agent is M-5 anti-settling agent. The unsaturated polyester resin in this embodiment is selected from Dongguan Yonghang Plastic Raw Materials Co., Ltd. with a product model of 2308A unsaturated polyester resin.

[0075] Wherein, the potassium drier is potassium octoate; the cobalt drier is cobalt isooctano...

Embodiment 3

[0085] A low-pigment, anti-yellowing PE transparent primer, which consists of a main agent component, a PE accelerator component and a PE initiator with a mass ratio of 100:0.5:1.2;

[0086] Wherein, the main ingredient component is made of the following raw materials in parts by weight:

[0087]

[0088] Wherein, the PE accelerator component is made up of following raw materials in parts by weight:

[0089] Potassium drier 40 parts

[0090] 60 parts of cobalt drier.

[0091] Among them, the PE initiator is methyl ethyl ketone peroxide; the wetting agent is Tego WET 245 wetting agent; the inhibitor is hydroquinone; the defoamer is BYK 141 defoamer; the anti-settling agent is M-5 anti-settling agent. The unsaturated polyester resin in this embodiment is selected from Dongguan Yonghang Plastic Raw Materials Co., Ltd. with a product model of 2308A unsaturated polyester resin.

[0092] Wherein, the potassium drier is potassium octoate; the cobalt drier is cobalt isooctanoate...

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Abstract

The invention relates to the technical field of coatings, in particular to a low-pigment, anti-yellowing PE transparent primer and a preparation method thereof. The low-pigment, anti-yellowing PE transparent primer is composed of a main agent component, a PE accelerator component and PE initiator, and the PE accelerator component is composed of potassium drier and cobalt drier, the present invention carries out proportioning through potassium drier and cobalt drier, and it is found that the combined PE accelerator component has both dryness and The advantages of good performance, and make it difficult to change color during the reaction. Moreover, the unsaturated polyester resin of the main agent component itself has light pigmentation and good yellowing resistance. Styrene as a solvent has little effect on the discoloration of the coating film. Therefore, the low-pigment, anti-yellowing PE transparent primer can be thickly coated at one time, and can realize the purpose of low pigment of the coating itself, not easy to change color in the reaction process, and good yellowing resistance of the coating itself. The preparation method of the low-pigment, anti-yellowing PE transparent primer has the characteristics of simple process, low production cost and being suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a low-pigment, anti-yellowing PE transparent primer and a preparation method thereof. Background technique [0002] Dyed veneer is a new-age decoration material, and it is a very mainstream decoration material on the market at present. It has the saying of "originating from nature and better than nature", so it is widely decorated in doors, bathrooms, kitchen doors and other places. The biggest feature of dyed veneer is its rich color and extremely transparent texture. Therefore, there are requirements for coating selection: (1) The coating film itself is light-colored or even colorless; (2) The coating film is required to be resistant to yellowing (according to GBT23983-2009 test method requirements △E<6). [0003] As we all know, PU coatings can easily meet the above requirements, but PU coatings cannot be thickly coated at one time, which will inevitably lead to the disad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D7/63C09D7/20
CPCC08K2201/014C09D167/06C09D7/20C09D7/63C08K5/00C08K5/14C08K5/13C08K5/098
Inventor 范开香
Owner 东莞大宝化工制品有限公司