High-scratch-resistance optical resin monomer and preparation method thereof

Abstract

The invention relates to a preparation method of a resin monomer, and relates to a high-scratch-resistance optical resin monomer and a preparation method thereof. The optical resin monomer comprises the components of, by weight, 21-23 parts of dimethyl terephthalate, 3-5 parts of propylene glycol, 2-4 parts of propylene alcohol, 37-39 parts of oligomer, 16-19 parts of CR-39, 7-9 parts of dibutyl maleate, 2-4 parts of pentaerythritol tetramercapto acetate, 3-5 parts of a bismaleimide body, and 3-5 parts of diphenylmethane diisocyanate, wherein a total weight of the components is 100%. When the optical resin monomer provided by the invention is used for producing resin lens, the refractive index of the resin lens can be 1.56 and higher. Therefore, high refractive index is ensured, and relatively high scratch resistance can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a resin monomer, in particular to a high-scratch-resistant optical resin monomer and a preparation method thereof. Background technique [0002] In recent years, the demand for optical resin lenses has been increasing in the domestic and foreign glasses markets. Compared with glass lenses, resin lenses have the advantages of light weight, impact resistance, dyeing performance, and easy processing. Medium and high refractive index optical resin lenses are favored by users for their unique advantages such as high light transmittance, UV protection, and ultra-thin. Generally, in the lens industry, the refractive index is above 1.60 as the high refractive index, the refractive index is 1.56 as the medium refractive index, and the refractive index is below 1.56 as the low refractive index. At present, the preparation of optical resin monomers for the production of low refractive index lenses is very common, ...

AI Technical Summary

Problems solved by technology

At present, the preparation of optical resin monomers for the production of low refractive index lenses is very common, but the preparation technology of optical resin monomers for the production of medium and high refractive index lenses is still not very mature, and many domestic lens manufacturers need to rely on Imported; although there are still some preparation processes for optical resin monomers of medium and high refractive index lenses, the color difference of the lenses after the resin monomers are added with pigments is relatively large, the pass rate is not high, the color stability of the lenses is not good, and the pass rate is low

As we all know, the disadvantages of resin lenses are: surface wear resistance, chemical resistance is worse than glass, and the surface is easy to scratch, which often needs to be improved by coating methods, which increases the cost of use