Temporary protection ink for optical glass and preparation method thereof

Abstract

The invention relates to temporary protection ink (IPC classification number: C09D11 / 107), in particular to temporary protection ink for optical glass and a preparation method of the temporary protection ink. The coating at least comprises the following raw materials in parts by weight: 40-50 parts of an alcohol-soluble resin binder, 10-20 parts of a micron-sized filler, 10-20 parts of a solvent containing ether bonds and hydroxyl groups, 2-4 parts of fumed silica, 1-2 parts of a dimethylsilane modified defoaming agent, 1-2 parts of an acrylate aid and 1-2 parts of a silane coupling agent. According to the temporary protection ink for the optical glass, the neutral environment-friendly solvent propylene glycol methyl ether acetate (PMA) or alcohol can be used for deinking, the deinking time is within 30 seconds, the fogging and bluing phenomena of alkali liquor deinking are avoided, and the cleaning process is convenient and safe. Meanwhile, the prepared temporary protection ink is good in film-forming property, not prone to cracking and good in adhesive force and flexibility.

Description

technical field [0001] The invention relates to a temporary protective ink (IPC classification number: C09D11 / 107), in particular to a temporary protective ink for optical glass and a preparation method thereof. Background technique [0002] With the continuous development of touch screen technology, its related industries have developed rapidly, so the requirements for the strength of the front cover glass of smart devices such as mobile phones are getting higher and higher. The mainstream glass manufacturers in the market continue to launch the latest glass, among which the most representative The 7th generation gorilla glass launched by Corning Corporation of the United States, although some glass has excellent performance, but the acid and alkali resistance is poor, so some temporary protective ink will be used in the glass manufacturing process to protect the mobile phone cover glass from Avoid scratches during processing to improve yield. At present, these temporary pr...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of touch screen technology, its related industries have developed rapidly. Therefore, the strength requirements for the front cover glass of smart devices such as mobile phones are also getting higher and higher. Mainstream glass manufacturers in the market continue to introduce the latest glass, the most representative of which is It is the 7th generation Gorilla Glass launched by Corning Corporation of the United States. Although some glass has excellent performance, its acid and alkali resistance is poor. Avoid scratches during processing and improve yield. At present, these temporary protective inks are basically removed with lye after processing. However, after removing ink with lye, it is easy to cause fogging on the glass surface. Therefore, we developed a A temporary protective ink that can use neutral reagents and can play a good protective role during processing is a trend.

[0003] Patent application CN201711128800.1 prepares a method for preparing an alkali-removed LED curing protection ink. The temporary protection ink prepared in this patent has excellent flexibility, good adhesion, can be peeled off in one piece after alkali-retreating, and has good high and low temperature resistance. , but after the lye ink is removed, it is easy to cause the glass surface to be foggy