6results about How to "Initiation efficiency is high" patented technology

The raw material compositions for preparing acrylic optical coatings and for preparing acrylic optical lenses both contain sulfur-containing aromatic acrylate compounds as shown in Formula A. The optical materials prepared from these raw material compositions, with precisely controlled refractive indices of 1.53–1.60, significantly improve the material's resistance to yellowing, optical durability, and impact resistance, meeting the application requirements of high-end optical materials. Wherein, R1 = CH2 = CH-COO, R2 = CH3, n = 2 or 3, and m = 0, 1, or 2.

The application discloses a cycloalkane oxime ester photoinitiator and a preparation method and application thereof, and belongs to the field of chemical synthesis and photocuring technology. The photoinitiator has a structure as shown in the formula (I).

The invention provides a bis-carbazolyl sulfonium salt-containing compound as well as a preparation method and application thereof, and belongs to the technical field of photochemistry. The bis-carbazolyl sulfonium salt-containing compound provided by the invention has a structure as shown in a formula (I). According to the invention, the molecular volume is increased by introducing the dicarbazole group, and meanwhile, the compound has very excellent solubility and photosensitive activity, and can be used as a high-quality substitute of a resist acid generator and a photoinitiator for cationic polymerization.

The application discloses emulsified temperature-resistant salt-resistant polyacrylamide and a preparation method thereof. The polyacrylamide is prepared by using acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and N-dodecyl acrylamide as monomers, and using a composite initiator through aqueous solution polymerization to obtain a quaternary copolymer. The polymer has good emulsification, temperature resistance and salt resistance, and has a high viscosity retention rate under the conditions of a temperature of 50-75 DEG C and a salinity of 5000-35000 mg / L. The preparation process is simple and practical, and is beneficial to industrial production.

The application discloses a self-hydrogen-supplying chalcone photoinitiator and application thereof in preparation of white photosensitive ink, wherein the structural general formula of the self-hydrogen-supplying chalcone photoinitiator is shown in the following formula: The self-hydrogen-supplying chalcone photoinitiator has strong absorption in the ultraviolet to visible light region, and has the characteristics of photobleaching and self-hydrogen supply. When the self-hydrogen-supplying chalcone photoinitiator is applied to preparation of the white photosensitive ink, a thick film with high reflectivity, no yellowing and excellent curing effect can be obtained. The photoinitiator has high initiation efficiency, small dosage, simple synthesis and is suitable for industrial production. The product can be used in LED and miniLED backlight structures with high reflectivity requirements.

The utility model discloses a photocuring adhesive reaction kettle which is characterized in that materials in the kettle are quickly and efficiently mixed in the radial direction and the longitudinal direction by combining a paddle type stirrer and a multi-layer frame type stirrer which are arranged in the kettle body, and the frame type stirrer can scrape and clean residual materials on the inner wall of the kettle in time; a plurality of light source panels are arranged at the top, the side face and the bottom of the kettle body, one or more light source panels can be flexibly selected, light sources can make contact with reaction materials in a closer distance, polymerization of monomers in the kettle is initiated, and the initiation efficiency is improved; the temperature in the kettle can be accurately controlled by introducing a medium through the stirring shaft; compared with the prior art, the problems that a conventional light source is only arranged at the top of the kettle body, the irradiation distance of the light source is long, the initiation effect is not obvious and the reaction time is long are solved, and a medium is introduced through the stirring shaft to take away polymerization reaction heat in time; the frame-type stirring is combined with a liquid guide device at the upper part of the kettle body to realize online cleaning of the kettle wall.