Introduction With the rapid development of high-performance polymers, electronic chemicals, and functional materials, the demand for specialty monomers with unique chemical reactivity continues to grow. 4-Chloromethylstyrene (CAS 1592-20-7) , also known as 4-Vinylbenzyl chloride , is an important aromatic vinyl compound widely used as a functional monomer in advanced polymer synthesis, ion exchange materials, surface modification, and specialty resin applications. Featuring both a polymerizable vinyl group and a reactive chloromethyl functional group, 4-Chloromethylstyrene provides excellent versatility for chemical modification and polymer engineering. Its unique molecular structure allows researchers and manufacturers to design customized functional polymers with improved performance and application-specific properties. Major Applications of 4-Chloromethylstyrene 1 Functional Polymers and Specialty Resin Synthesis One of the most important applications of 4-Chloromethylstyren...