Thermosensitive film-forming resin for treatment-free CTP (computer to plate) and preparation method thereof

Abstract

The invention discloses thermosensitive film-forming resin for a treatment-free CTP plate and a preparation method thereof, and relates to the field of materials. The preparation method comprises the steps of: adding epoxy resin into a four-neck flask, then adding a mixed solvent, introducing nitrogen for protection, and heating and stirring the mixture till the epoxy resin is completely dissolved to obtain a reaction solution a; adding an initiator into a mixed solvent, and carrying out ultrasonic stirring until the initiator is completely dissolved to obtain a reaction solution b; adding the reaction solution b into a constant-pressure dropping funnel, and dropwise adding the reaction solution b into the reaction solution a to obtain an intermediate product A; and adding a modifier into a four-neck flask, carrying out heating and constant-temperature reaction, and carrying out rotary evaporation operation on the reaction product to obtain the thermosensitive film-forming resin. A benzene ring and a C-F bond in the modifier are introduced into the molecular chain of the epoxy resin, the introduction of the benzene ring increases the rigidity in the molecular chain and weakens the thermal motion of molecules, and the introduced C-F bond has high bond energy and high stability and thus improves the heat resistance of the epoxy resin.

Description

technical field [0001] The invention relates to the field of materials, in particular to a heat-sensitive film-forming resin for a treatment-free CTP plate and a preparation method thereof. Background technique [0002] With the development of key technologies such as information and manufacturing, pre-press plate-making is making every effort to popularize computer-to-plate (Computer To Plate, CTP). Computer-to-plate-making refers to the technology of inputting the original information into the computer for processing, and then directly outputting the information to the printing plate through computer control. The information on the electronic layout is transmitted to the printing plate, and the technology for printing the printing plate is obtained directly. Offset printing CTP plates mainly include photosensitive plates, heat-sensitive plates and inkjet plates according to the imaging mechanism, among which heat-sensitive plates occupy a dominant position in the market. ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a kind of heat-sensitive type film-forming resin and preparation method thereof for exempting from processing CTP plate: by adding epoxy resin to a constant pressure dropping funnel, magnetic stirrer , a thermometer, an air guide tube and a four-necked flask with a condenser tube, then add a mixed solvent, pass through nitrogen protection, heat up and stir until the epoxy resin is completely dissolved, and obtain a reaction solution a, add the initiator to the mixed solvent, and ultrasonically stir to make It is completely dissolved to obtain the reaction solution b, which is added to the constant pressure dropping funnel, and added dropwise to the reaction solution a to obtain the intermediate product A, and then the modifier is added to the four-necked flask, and the temperature is raised Heating and constant temperature reaction, the reaction product is subjected to a rotary evaporation operation to remove the solvent, and a heat-sensitive film-forming resin for a treatment-free CTP plate is obtained, which solves the problem of poor heat resistance of the existing heat-sensitive film-forming resin for a treatment-free CTP plate. The quality of offset printing CTP plates limits the development of offset printing CTP plates

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