合成聚乙烯基苯甲酸树脂的研究(Ⅱ)——由氯甲基化交联聚苯乙烯树脂按二步法合成  

THE INVESTIGATION OF THE SYNTHESIS OF POLYVINYLBENZOIC ACID RESINS (Ⅱ)——SYNTHESIS WITH TWO-STEP METHODS FROM THE CH-LOROMETHYLATED COPOLYMER OF STYREN-DIVINYL BENZENE

作　　者：何炳林[1] 萧绍博[1] 陈伟朱 林雪[1] Ho Ping-lum;Xiao Shaobo;Chen Weichu;Lin Xue(Department of Chemistry,Nankai University,Tianjin)

机构地区：[1]南开大学化学系

出　　处：《高等学校化学学报》1983年第6期789-794,共6页Chemical Journal of Chinese Universities

摘　　要：用两种二步法将交联度6%的大孔氯甲基化聚苯乙烯树脂制成了聚乙烯基苯甲酸树脂,产品氯含量均为零。Two methods for the oxidation of chloromethylated macroporous poly (styrene-divinylbenzene)containing 6% divinylbenzene (CPS)to crosslink-poly (benzoic acid) resins (PBA) have been investigated. By the first method, crosslinked poly(benzyl alcohol) (PBAC) was obtained by hydrolysis of CPS and then oxidized to PBA (1) with dilute nitric acid.By the second method, crosslinked poly (benzaldehyde) (PBAD) was obtained by oxidation of CPS with DMSO and then oxidized to PBA(2)With dilute nitric acid at a lower temperature than that in the oxidation of PBAC with dilute nitric acid.Both PBA(1)and PBA(2) contain no residual chlorine and show an exchange capacity of about 5.5 meq/g(H) or 1.0 meq/ml (Na). However, the product obtained by the second method shows a far lower percentage of cracked beads (<2%) than that by the first method, indicating that PBAD is more readily oxidized with dilute nitric acid at lower temperature than PBAC.The IR spetra of all func-tionalized copolymers mentioned above were investigated. The effects of the concentration of the reagents, the reaction temperatures and time, the solvents added into the reaction mixture were discussed.

关 键 词：聚乙烯基 氯含量 二步法 苯甲酸 氯甲基化聚苯乙烯树脂 交联度 氯甲基化交联聚苯乙烯 (Ⅱ) 

分 类 号：TQ3[化学工程]