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UV-curable composition and adhesive film comprising same, adhesive tape, and adhesive member

A composition and adhesive film technology, applied in the direction of adhesives, films/sheets without carriers, adhesive types, etc., can solve the problems of substrate contamination, glue overflow, and inability to provide initial adhesion, etc., and achieve excellent appearance , Improve the effect of structural strength

Active Publication Date: 2020-01-03
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin composition reported in this document does not have the properties of tape or film when uncured, does not have die-cuttability, cannot provide initial adhesion, and is difficult to control the adhesive layer during construction and assembly. Precisely control the thickness, it is easy to produce glue overflow, cause appearance problems, and may cause pollution to the substrate

Method used

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  • UV-curable composition and adhesive film comprising same, adhesive tape, and adhesive member
  • UV-curable composition and adhesive film comprising same, adhesive tape, and adhesive member
  • UV-curable composition and adhesive film comprising same, adhesive tape, and adhesive member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0091] The present invention will be further described in detail below with reference to the examples. It should be understood that the present invention is not limited to the following examples. Unless otherwise specified, "parts" all refer to "weight parts", "%" all refer to "weight %", and "g" all refer to the weight unit "gram".

[0092] The raw materials used in this application are shown in the table below.

[0093]

[0094]

[0095] testing method

[0096] Initial peel force test

[0097] This test measures the force needed to peel off the adhesive tape at an angle of 180 degrees. With reference to the peel force test method ASTMD3330, the adhesive tape in the embodiment is tested, specifically as follows,

[0098] Wipe the stainless steel plate three times with isopropanol before testing. Cut the single-sided adhesive tape with 50 micron PET as the back substrate into 0.5 inches, peel off the release film, stick it on a stainless steel plate, and roll it twic...

Synthetic example 1

[0106] Photobase Generator HDBU·BPh 4 Synthesized according to the following literature, Molecular Recognition of Enolates of Active Methylene Compounds in Acetonitrile. The Interplay between Complementarity and Basicity, and the Use of Hydrogen Bonding to Lower GuestPKaS, Anne M.Kelly-Rowley, Vincent M.Lynch, Eric V.Anslyn, etc., J .Am.Chem.SOC.1995,117,3438-3447, the synthesis method is as follows.

[0107] 10% by weight dilute hydrochloric acid was added dropwise into DBU (12.9 g) until the pH was neutral. NaBPh 4 (30.5 g) in water was added dropwise to the acidified DBU solution to give a white precipitate. The white precipitate was separated and recrystallized to obtain HDBU·BPh 4 Pure.

Synthetic example 2

[0109] Mix 80 parts of MA, 15 parts of BA, 5 parts of GMA, 0.2 parts of VAZO 67, and 150 parts of EA in a glass bottle, blow nitrogen into it for two minutes to remove oxygen and seal it, and put the reaction bottle in the polymerization equipment at 60°C for polymerization reaction After 24 hours, a solvent-based (meth)acrylic polymer was prepared with a solid content of 40%.

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Abstract

The invention relates to a UV-curable composition, and an adhesive film comprising the same, an adhesive tape, and an adhesive member. The UV-curable composition is a photo-base catalyzed UV curable composition. The UV-curable composition comprises: (1) an acrylic polymer and / or an ethylene-vinyl acetate copolymer; (2) a curable component containing a polyfunctional thiol and a polyfunctional epoxy resin; and (3) a photo-alkali generating agent. The composition disclosed by the invention can be coated into an adhesive tape or an adhesive film, and the adhesive tape or the adhesive film has initial viscosity when UV curing is not carried out, and can reach the strength of a semi-structural adhesive or a structural adhesive after UV curing.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a UV curing composition and an adhesive film, adhesive tape and bonding member containing the composition. Background technique [0002] UV-cured tape or film has the advantages of being die-cuttable, providing initial strength, no glue overflow, and excellent appearance when uncured. The film of UV curable tape is composed of three parts: pressure sensitive adhesive, curable components and photoinitiator. Traditional UV curing tapes can be divided into UV radical curing systems and UV cationic curing systems. For UV radical curing tapes, the curing speed is too fast to develop good bond strength and cannot be used for bonding opaque surfaces. UV cationic curing tape can be used for bonding opaque surfaces, and the curing speed is easy to adjust, but the cations are easily affected by moisture and alkaline substances, resulting in a greatly reduced curing speed or incomplet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/29C09J7/25C09J7/30C09J133/08C09J131/04C09J133/12C09J11/06C09J11/08C08F220/14C08F220/18C08F220/32C08F220/58C08F220/20
CPCC09J7/10C09J7/29C09J7/255C09J7/30C08F220/14C08F220/18C09J133/08C09J131/04C09J133/12C09J11/06C09J11/08C09J2467/006C09J2467/005C09J2433/00C09J2431/00C09J2463/00C08L2205/025C08L2205/03C09J2301/122C09J2301/414C09J2301/312C08L63/00C08K5/37C08L31/04C08L33/06C09J133/06C09J7/385C08F220/1804C08F220/325C08F220/1808C09J2301/124C09J2301/162C09J2301/302C08F2/50C08F220/06C08F220/20C08F220/36C08F220/56C08F226/06C08G59/245C08L23/0853C09J2423/04
Inventor 张丽晶林炜罡
Owner 3M INNOVATIVE PROPERTIES CO
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