Recently, Beijing University of Chemical Technology announced a patent for invention of a hydrogen-donating sulfide naphthalimide derivative photoinitiator suitable for aerobic curing of UVLEDs.
This invention patent discloses a hydrogen-donating thioether naphthalimide derivative photoinitiator suitable for aerobic curing of UVLED, which relates to the field of photosensitive polymers. It is based on the use of existing photoinitiators in UVLED light sources Under irradiation, the problem of poor performance in the presence of oxygen is proposed; the present invention prepares a type of hydrogen donor-containing thioether-type naphthalimide derivative photoinitiator, and provides the above-mentioned hydrogen-containing donor The preparation method of the thioether naphthalimide derivative photoinitiator and its application in the photocuring system; the beneficial effects of the present invention are: ① The photoinitiator prepared by the present invention has significantly extended ultraviolet absorption wavelength, In the wavelength range of the light source, it has good ultraviolet absorption capacity. ② The photoinitiator prepared by the present invention has obvious anti-oxidation and polymerization inhibition effect. ③The migration stability of the photoinitiator prepared by the invention is obviously improved.
Main claim: A hydrogen-donor-containing thioether naphthalimide derivative photoinitiator suitable for UV-LED aerobic curing, characterized in that the hydrogen-donor-containing sulfide naphthalimide The structural formula of the amine derivative photoinitiator is as follows: the value of n ranges from 1 to 10; the value range of n is preferably 1 to 5; the value of n is most preferably 1; R1 is selected from C3-C20 Fatty alkyl, hydroxyl, vinyl, propenyl, methyl, ethyl, alkoxy, halogen, aralkyl or phenyl, preferably R1 is vinyl, methyl; R2 is selected from carboxyl, benzoyl, Acetyl, acryl, methoxy, ethoxy, nitro, preferably R2 is methoxy.
