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. er yi qing suan zuo lei
Pages: 1-28
Year: Issue:  S1
Journal: Occupational Health and Emergency Rescue

Keyword:  二异氰酸酯支气管激发试验致敏气道反应性迟发型哮喘反应嗜酸粒细胞异氰酸醋乙酞甲胆碱支气管肺炎总使用量;
Abstract: 在分子结构中含有二个异氰酸酯基团(-NCO)的有机化合物,通称有机二异氰酸酯.常见品种有甲苯二异氰酸酯(简称TDI)、二苯基甲烷二异氰酸酯(简称MDI)、六甲撑二异氰酸酯(简称HDI)、1,5-萘撑二异氰酸酯(简称NDI)、3-异氰酸酯甲基-3,5,5-三甲基环己烷异氰酸酯(异佛尔酮二异氰酸酯简称IPDI)等.甲苯二异氰酸酯一般有二种异构体:2,4-甲苯二异氰酸酯和2,6-甲苯二异氰酸酯.二种异构体(2,4-TDI/2,6-TDI)的含量多少取决于TDI的合成路线.市场上销售的甲苯二异氰酸酯混合物异构比主要有三种:100%;80%:20%; 65%:35%,其中以80%:20%异构比混合物为最多,占工业总使用量95%.
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