Tackifying polymer, UV acrylic pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method

By grafting hydrogenated terpenes into acrylic polymer and adding them to UV acrylic pressure-sensitive adhesive, the problems of hindered polymerization curing and poor bonding performance are solved, and efficient bonding to polyolefin materials is achieved, suitable for a variety of uses and environmentally friendly.

CN119751743APending Publication Date: 2025-04-04湖南弘擎电子材料科技有限公司
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Patent Information

Application Number
CN202411969412.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

When using conventional tackifiers, existing UV acrylic pressure-sensitive adhesives are easily hindered from polymerization and curing, reduced molecular weight, resulting in poor bonding performance, and traditional tackifier enhancement methods have poor effect on scenarios with high viscosity requirements, and have environmental and health effects.

Method used

By grafting hydrogenated terpenes into the acrylic polymer, a small molecular weight viscosity-enhancing polymer is prepared and added to the UV acrylic pressure-sensitive adhesive to form a pressure-sensitive adhesive tape to avoid hindering polymerization and curing and improve adhesive performance.

Benefits of technology

It improves the adhesion performance of UV acrylic pressure-sensitive adhesive to polyolefin materials, enhances adhesion and cohesion. It is suitable for a variety of purposes and does not affect the cohesion performance of UV acrylic pressure-sensitive adhesive and is environmentally friendly.

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Abstract

The present invention relates to the technical field of pressure-sensitive adhesives, and in particular to a tackifying polymer, a UV acrylic pressure-sensitive adhesive, a pressure-sensitive adhesive tape and a preparation method. The tackifying polymer comprises the following raw materials by weight: 30-40 parts of butyl acrylate, 5-10 parts of acrylic acid, 10-15 parts of hydroxyethyl acrylate, 20-30 parts of methyl methacrylate, 20-30 parts of hydrogenated terpenes, 0.1-0.5 parts of initiator and 2-5 parts of 2-ethylhexanoate glyceride. The present invention obtains a low-molecular-weight tackifying polymer by grafting hydrogenated terpenes to acrylic polymers, and adds the tackifying polymer to UV acrylic pressure-sensitive adhesive to prepare a pressure-sensitive adhesive tape, which can avoid directly adding the UV acrylic pressure-sensitive adhesive to cause polymerization curing to be blocked, and improve the bonding performance of the pressure-sensitive adhesive tape to polyolefin materials.
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