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

Adhesive mixture, adhesive, film including the same, and preparation method thereof

A mixture and adhesive technology, applied in the direction of non-polymer adhesive additives, adhesive types, adhesive additives, etc.

Inactive Publication Date: 2015-09-23
3M INNOVATIVE PROPERTIES CO
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, such (meth)acrylate-based protective films, while protecting the screen from external damage, may cause unexpected defects in the screen surface

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
  • Adhesive mixture, adhesive, film including the same, and preparation method thereof
  • Adhesive mixture, adhesive, film including the same, and preparation method thereof
  • Adhesive mixture, adhesive, film including the same, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example

[0119] The following materials were used in the following Examples and Comparative Examples.

[0120] A PET film (available from Mitsubishi Chemical Hongkong LTD under the trade name 4507) having a thickness of 50 μm was used as the backing layer.

[0121] An adhesive solution (acrylate-based pressure-sensitive adhesive solution in ethyl acetate and toluene) obtained from Eternal Chemical CO., LTD, Taiwan under the trade name 77125 was used as (formaldehyde base) acrylate polymer, wherein the Tg of the acrylate polymer is -50°C, the amount of the acrylate polymer is 35%, and the amount of the solvent is 65%.

[0122] An isocyanate crosslinking agent available under the trade name EC-92 from Soken Chemical Co., Ltd., Taiwan was used as the crosslinking agent.

[0123] Use the following basic metal imides or amines:

[0124] Lithium bis(trifluoromethanesulfonyl)imide, LiN(SO 2 CF 3 ) 2 , Mw: 287g / mol, pKa: 13.5, solution in ethyl acetate (EA), 1% by weight, pH: 7.6, availab...

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
thicknessaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

A pressure sensitive adhesive mixture includes a (meth)acrylate polymer and a weak alkaline metal imide or amine. The weak alkaline metal imide or amine has a pKa of 11 to 20 and the molar ratio of the weak alkaline metal imide or amine to the -COOH groups contained in the (meth)acrylate polymer is in a range of about 1.0 to about 5.0. An adhesive formed from the adhesive mixture, a film including an adhesive layer formed from the adhesive mixture and a preparation method thereof are also provided.

Description

technical field [0001] Adhesive mixtures, adhesives, films including them, and methods for their preparation are provided. In particular, the adhesive may be of the pressure sensitive adhesive type. Background technique [0002] Protective films (PF) are widely used for screens of touch panels (TPs), liquid crystal display modules (LCMs), and hand-held mobile manufactures (HMMs) in order to protect the screens from external damage. [0003] In most protective films based on (meth)acrylate adhesives, acid-free (meth)acrylate adhesives are used to form pressure-sensitive adhesives for protective films such as those used to protect screens. Adhesive layer. However, on the surface of such a (meth)acrylate-based protective film-covered screen, ghosting marks, a visual defect that cannot be removed with organic solvents, are observed. This dummy mark is permanent, unlike dummy marks that can be removed using organic solvents. Therefore, such (meth)acrylate-based protective fil...

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): C09J133/08C09J133/10C09J11/06C09J7/02
CPCC09J2205/102C09J133/08C08K5/43C08K5/16C09J7/0217C09J133/10C08K5/17C09J2203/318C09J7/385C09J2301/408C08L33/08C08L33/10
Inventor 张国梁
Owner 3M INNOVATIVE PROPERTIES CO