High-performance resin based on polymerized rosin group as well as preparation method and application of high-performance resin

Abstract

The invention discloses high-performance resin based on polymerized rosin and a preparation method and application thereof, belonging to the field of rosin ester. The resin is obtained by subjecting the polymerized rosin to reacting with alcohol and then to reacting with long-chain fatty acid, wherein the raw material, namely the polymerized rosin is a polymerization product of rosin, belongs to a natural renewable resource, and is rich in source, friendly to environment, clean and simple to prepare. The long-chain fatty acid with high flexibility is added to the tail end of the reactant of polymerized rosin and alcohol to further increase the tail chain length of polymerized rosin ester, so the rigidity of the resin is further reduced, and the compatibility, flexibility and use temperature range of the resin with a matrix polymer under a low-temperature condition are improved to a greater extent; and therefore, the application range of common polymerized rosin resin is expanded to a greater extent, and the breakthrough that the common polymerized rosin resin can keep good adhesive property under different temperature conditions is realized.

Description

technical field [0001] The invention belongs to the field of rosin esters, and in particular relates to a polymerized rosin-based high-performance resin and its preparation method and application. Background technique [0002] Polymerized rosin ester is a product obtained by the esterification reaction of polymerized rosin and alcohol. The raw material of polymerized rosin is a derivative of rosin, which is generally prepared in a solvent by catalytic polymerization. The main component of polymerized rosin is the dimer of rosin acid, which contains two carboxyl groups in the molecular structure, which has high softening point, light color, no crystallization, excellent oxidation resistance, good thermal stability, and higher resistance in organic solvents. Low viscosity and low acid value, as an important chemical raw material, it can be used directly or processed into esters or salts. [0003] Compared with polymerized rosin ester, polymerized rosin ester has better oxidat...

AI Technical Summary

Problems solved by technology

[0007] Due to its high molecular weight, high softening point and strong rigidity, polymerized rosin esters are less compatible with matrix polymers such as adhesives at low temperatures, and cannot effectively increase the glass transition temperature of polymers as tackifying resins. , to reduce the movement of molecular chains in the high-frequency region and increase the movement of molecular chains in the low-frequency region, and cannot be effectively dispersed into materials such as adhesives, thereby affecting its bonding performance

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