Unlock instant, AI-driven research and patent intelligence for your innovation.

Ultraviolet curable adhesive composition, adhesive and adhesive film

An adhesive, curing technology, applied in the direction of non-polymer adhesive additives, non-polymer organic compound adhesives, adhesive types, etc. Achieving the effect of excellent height difference followability

Inactive Publication Date: 2016-03-02
DIC CORP
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the adhesive composition is used for an adherend having a level difference due to black printing, a decorative layer, etc., bubbles may be generated around the level difference, and the level difference followability may be poor due to easy peeling. The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultraviolet curable adhesive composition, adhesive and adhesive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0106] Hereinafter, the present invention will be described in more detail using examples.

Synthetic example 1

[0108]

[0109] To a reaction vessel equipped with a stirrer, a reflux cooling pipe, a nitrogen introduction pipe, and a thermometer, 476 parts by mass of polytetramethylene glycol (number average molecular weight: 1000, hereinafter abbreviated as "PTMG1000"), 6.8 parts by mass of acrylic acid 2 -Hydroxyethyl ester (hereinafter abbreviated as "HEA"), 2 parts by mass of 2,6-di-t-butylcresol, and 0.3 parts by mass of p-methoxyphenol. After raising the temperature in the reaction container to 40° C., 104 parts by mass of isophorone diisocyanate (hereinafter abbreviated as “IPDI”) was added. Then, 0.1 part by mass of dioctyltin dineodecanoate was added, and the temperature was raised to 80° C. over 1 hour. Then, it held at 80 degreeC for 12 hours, and after confirming that all the isocyanate groups disappeared, it cooled and obtained the urethane acrylate (A-1). The equivalent of the acryloyl group of the obtained urethane acrylate (A-1) was 10,019 (rounded off below the decima...

Synthetic example 2

[0111]

[0112] In the reaction vessel equipped with a stirrer, a reflux cooling pipe, a nitrogen gas introduction pipe, and a thermometer, 84 parts by mass of polypropylene glycol (number average molecular weight 3000), 206 parts by mass of PTMG1000, and 50 parts by mass of polypropylene glycol (number average molecular weight 400) were added , 50 parts by mass of polyethylene glycol (number average molecular weight: 400), 3.9 parts by mass of HEA, 2 parts by mass of 2,6-di-tert-butylcresol, and 0.3 parts by mass of p-methoxyphenol. After raising the temperature in the reaction container to 40°C, 106 parts by mass of IPDI was added. Thereafter, 0.1 parts by mass of dioctyltin dineodecanoate was added, and the temperature was raised to 80° C. over 1 hour. Then, it held at 80 degreeC for 12 hours, and after confirming that all the isocyanate groups disappeared, it cooled and obtained the urethane acrylate (A-2). The equivalent weight of the acryloyl group of the obtained ure...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention addresses the problem of providing an ultraviolet curable adhesive composition which has good ability to conform to steps. The present invention provides: an ultraviolet curable adhesive composition which comprises an urethane (meth)acrylate (A), a (meth)acrylic monomer (B) and a photoinitiator (C), wherein a 100% modulus obtained by a tensile test under conditions of a temperature of 25 DEG C, humidity of 50% and crosshead speed of 300 mm / min of a cured film obtained using the ultraviolet curable adhesive composition is 0.12MPa or less; and an adhesive and an adhesive film obtained using the same. The adhesive obtained using this ultraviolet curable adhesive composition can be favorably used as an adhesive used for an optical member.

Description

technical field [0001] The present invention relates to an ultraviolet curable adhesive composition, an adhesive, and an adhesive film excellent in step followability. Background technique [0002] Acrylic adhesives have been used in a wide variety of applications. In particular, in recent years, the use in IT-related products such as thin TVs has been expanding, and higher functionality has been promoted. However, the prices of IT-related products are also falling, so not only high functionality but also high productivity are required. [0003] Under such circumstances, ultraviolet curable adhesives are attracting attention because they do not require the drying process of the solvent that is a necessary process for conventional types of adhesives (solvent-based, water-based), and it is necessary to express the performance after processing. required aging time, etc., so high productivity is expected. Compared with conventional types of adhesives, this ultraviolet curable...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J4/02C09J7/00C09J11/06C09J7/10
CPCC08G18/4854C08G18/755C08F290/067C09J175/16C09J2203/318C09J2433/00C09J2475/00C09D4/00C09J4/00G02F2202/28C09J151/08C09J7/10C08F220/343C09J2301/416C08F220/1804C08G18/672C08G18/48C08F220/18
Inventor 纲岛启次大地尉夫佐藤浩司小西真理子
Owner DIC CORP