Release agent type coating agent in humid environment and preparation method of release agent type coating agent

Abstract

The invention discloses a release agent type coating agent in a humid environment. The release agent type coating agent comprises a release agent, a crosslinking agent, a catalyst, an anchoring agent, a moisture scavenger and a solvent, wherein the moisture scavenger comprises a main moisture scavenger and an auxiliary moisture scavenger; and the moisture scavenger is one or more compounds capable of reacting with water at a room temperature, and comprises an organic moisture scavenger and an inorganic moisture scavenger. A preparation method of the release agent type coating agent in the humid environment comprises the following steps: sequentially preparing a release agent diluent, a crosslinking agent diluent, a catalyst diluent, an anchoring agent diluent and a moisture scavenger diluent and mixing with the solvent evenly; and preparing the release agent type coating agent in the humid environment; coating the release agent type coating agent on the surface of a base material; and finally desolventizing and solidifying in a drying oven, so as to avoid sticking of a pressure sensitive adhesive product.

Description

technical field [0001] The invention relates to the field of pressure-sensitive adhesive products, in particular to a release agent type coating agent used in a humid environment and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive products can exhibit viscosity without heating or using solvents, and are widely used in die-cutting, electronics, medicine, optics, electroplating protection, and material processing. For ease of use, pressure-sensitive adhesive products are generally used together with anti-adhesive materials. Generally speaking, the anti-adhesive material is to coat a layer of material with low surface free energy on the surface of the substrate, and the material with low surface free energy is generally a cross-linkable polymer material. Such a substance having a low surface free energy is coated with a device such as a gravure roll coater after being diluted with a solvent. Duri...

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Problems solved by technology

However, substances that can react with water at room temperature generally produce acid-base substances that destroy the structure of the release agent, or these substances themselves contain nitrogen, phosphorus, halogen elements, etc., which can easily cause catalyst poisoning in the platinum catalytic system

[0004] In view of this, the anti-adhesive material product factory generally improves the condensed water on the coating head to enter the trough containing the release agent coating agent by cooling and dehumidifying in the release coating room, but the low temperature and dehumidification on the one hand This will increase the cost of energy consumption. On the other hand, the dry environment of the coating room will also lead to the accumulation of static electricity in the coating station, which will lead to fire accidents.

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