High-efficiency anti-adhesive uv release coating applied to pressure-sensitive adhesives and its preparation and application

A technology of pressure-sensitive adhesives and coatings, applied in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve problems such as slow curing, achieve low adhesion strength, solve oxygen inhibition, and low critical surface tension Effect

CN105315881BActive Publication Date: 2018-05-11SHANGHAI CHENGYING NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-05-11

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Abstract

The invention provides a high-efficiency anti-sticking UV release coating applied to pressure-sensitive adhesives and its preparation and application; the coating comprises the following components and weight percentages: photoinitiator 3-8%, co-initiator 3-5% %, reactive diluent 20‑40%, silicone acrylic resin 15‑45%, non-silicon type acrylic resin 25‑45%. The present invention adopts a free radical and cationic compound initiator system, and utilizes the sensitization effect obtained by the synergistic effect of the two to better solve the problems of oxygen inhibition and slow curing caused by the single initiator, and at the same time, the photocuring speed is fast , good solubility, absorption wavelength up to 390nm, is a high-efficiency, energy-saving, environmentally friendly light-curing release coating.
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Description

technical field

[0001] The invention relates to a high-efficiency anti-adhesive UV release coating applied to pressure-sensitive adhesives and its preparation and application. Background technique

[0002] Pressure-sensitive adhesive is the abbreviation of pressure-sensitive adhesive. It is a type of adhesive that can be firmly bonded to the adherend without solvents, heat or other means, just by applying light finger pressure. Release coatings, also known as release agents and anti-sticking agents, are widely used in rolls of transparent adhesives, label pressure-sensitive adhesives, paper diapers, etc. Film, dry film photoresist (for engraving electronic circuit boards) and other fields, the main function is to protect the rubber surface of pressure-sensitive adhesive products. When the pressure-sensitive adhesive is used, the release protective film can be easily peeled off. It can be said that the coating area of ​​the pressure-sensitive adhesive is as large as the coa...

Examples

Embodiment 1～6

[0031] Embodiments 1 to 6 provide a high-efficiency anti-sticking UV release coating applied to pressure-sensitive adhesives and its preparation and application. The components and contents of the coating are as shown in Table 1:

[0032] Table 1 Embodiment 1~6 components and mass percent

[0033]

[0034] Described preparation and application comprise the following steps:

[0035] Step 1, adding the non-silicon type acrylic resin and silicone acrylic resin into the active diluent, mixing evenly and fully dissolving;

[0036] Step 2, adding a photoinitiator and a co-initiator to the mixed solution obtained in step 2, stirring and mixing at 1000 to 2000 rpm;

[0037] Step 3: Cool the mixture obtained in Step 2, and filter at 250 mesh at normal temperature and pressure to obtain the high-efficiency anti-sticking UV release coating.

[0038] Preferably, in step 1, the adding is sequentially adding; the uniform mixing is achieved by stirring.

[0039] Preferably, in step 3, ...