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High temperature resistant release coating material for artificial synthetic leather release paper, and preparation method and application thereof

A release coating and release paper technology, which is applied in the field of synthetic leather manufacturing, can solve the problem that solvent resistance, release stability and repeated use times are not ideal, and the release layer is difficult to meet the temperature resistance requirements, solvent resistance and high temperature resistance. Problems such as poor performance, to achieve the effect of many times of repeated use, good chemical inertness, and low surface energy

Active Publication Date: 2014-04-23
ZHEJIANG KAREN SPECIALTY MATERIALS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production of artificial leather, the release paper has to withstand the oven temperature of 160-230°C. It is difficult for the release layer based on thermoplastic resin to meet such temperature resistance requirements, and the clarity of the embossed lines is poor.
The surface coating of thermosetting release resin has great advantages in terms of temperature resistance, but the products on the market are still not ideal in terms of solvent resistance, release stability and repeated use times.
At present, the release paper developed in China generally has disadvantages such as low hardness, poor solvent resistance and high temperature resistance, poor release performance and low number of repeated uses, and further research is needed on the composition and compounding of thermosetting resins. explore

Method used

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  • High temperature resistant release coating material for artificial synthetic leather release paper, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In terms of parts by mass, take 80 parts of modified polyurethane acrylate, 20 parts by mass of modified epoxy acrylate, 20 parts of tripropylene glycol diacrylate, and 20 parts of ethoxylated trimethylolpropane triacrylate , 5 parts of perfluoromethacrylate, 5 parts of γ-methacryloxypropyltrimethylsilane, put the above-mentioned components in a container at room temperature and mix and stir to promote the solid components It dissolves to obtain uniform and nearly transparent coating, which is the surface coating of release paper.

[0036] Apply the release layer to the release base paper with primer and emboss and cure it as follows:

[0037] Place the release coating prepared by the above method in the feed tank 3, and the coating metering system 2 adheres to the release coating in the feed tank 3, and transfers the release coating to the paper surface of the base paper 1, and is pulled by the guide roller , The release base paper with primer is further embossed on the su...

Embodiment 2

[0039] In parts by mass, take 70 parts of modified urethane acrylate, 30 parts by mass of modified epoxy acrylate, 15 parts of tripropylene glycol diacrylate, and 15 parts of ethoxylated trimethylolpropane triacrylate , 4 parts of perfluoromethacrylate, 4 parts of γ-methacryloxypropyltrimethylsilane, according to the method of Example 1 to prepare the corresponding release paper.

Embodiment 3

[0041] In parts by mass, take 60 parts of modified polyurethane acrylate, 40 parts by mass of modified epoxy acrylate, 15 parts of tripropylene glycol diacrylate, and 15 parts of ethoxylated trimethylolpropane triacrylate , 3.5 parts of perfluoromethacrylate, 3.5 parts of γ-methacryloxypropyltrimethylsilane, according to the method of Example 1 to prepare the corresponding release paper.

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Abstract

The invention relates to a high temperature resistant release coating material for artificial synthetic leather release paper, and a preparation method and an application thereof. The release coating material is composed of modified urethane acrylate, modified epoxy acrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate ethoxylate, perfluoromethacrylate and gamma-methylacryloxypropyltrimethylsilane. A method for preparing the high temperature resistant release coating material for the artificial synthetic leather release paper comprises the steps of orderly putting all the components in a container, mixing and stirring so that the solid components are dissolved, and thus obtaining an even and approximately transparent coating. The release paper is clear and vivid in lines; due to the optimization of the formula, the release paper can be caused to be moderate in hardness, good and stable in release property, numerous in repeated use times, and excellent in solvent resistance and high-temperature resistance.

Description

technical field [0001] The invention relates to the field of synthetic leather manufacturing, in particular to a high-temperature-resistant release coating material for artificial synthetic leather release paper, a preparation method and application thereof. Background technique [0002] In the production of artificial synthetic leather, the dry method (also known as transfer coating) production process is to apply the coating agent (polyurethane or PVC) on the release paper, form a continuous and uniform film after drying, and then The film is coated with adhesive and laminated with the fabric (or wet-laid bottom), and then dried, the release paper and the leather are peeled off, and the coating agent (including the adhesive layer) film will be transferred from the release paper onto the fabric (or leather). Artificial synthetic leather is mainly polyurethane synthetic leather (PU leather) and polyvinyl chloride artificial leather (PVC leather). [0003] Artificial synthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D163/00C09D5/20D06N3/12D06N3/14
Inventor 叶慧仁
Owner ZHEJIANG KAREN SPECIALTY MATERIALS
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