对叔丁基邻苯二酚

4-tert-Butylcatechol (TBC) is an organic chemical compound which is a derivative of catechol. It is added as a stabilizer and an inhibitor of polymerization to butadiene, styrene, vinyl acetate and other reactive monomer streams. It is 25 times better than hydroquinone at 60°C for polymerization inhibitory effect. Also used as a stabilizer in the manufacture of polyurethane foam. It also can be used as an antioxidant for synthetic rubber, polymers and oil derivatives. It can be used as purification agent for aminoformate catalysts. TBC is available in a form of a solid crystal and 85% solution in methanol or water.

生产方法
(1)由邻苯二酚与叔丁醇反应而得在反应釜中依次投入二甲苯、邻苯二酚和磷酸,搅拌加热溶解,继续升温至二甲苯回流时,再慢慢滴加叔丁醇的二甲苯溶液,加完后继续搅拌2h,降温。然后将物料送至中和洗涤罐静置,分去磷酸,过滤后循环使用;二甲苯层用碳酸钠中和至pH值为5～6,用水洗涤,再进行减压蒸馏而得成品。需提纯时可采用石油醚重结晶。 该品在60℃时阻聚效能较对苯二酚高25倍，为烯烃单体蒸馏或贮运时的高效阻聚剂，尤其用于苯乙烯、丁二烯、氯丁二烯、异戊二烯等单体。也用于氯乙烯、乙烯基吡啶、α-烯烃、壬烯、环戊二烯、异戊二烯、丙烯酸、甲基丙烯酸及其酯类、氯化烯烃、聚氨酯等。该品也用作聚乙烯、聚丙烯、聚氯丁二烯、合成橡胶、尼龙等聚合物的抗氧化剂，以及用作油脂及其衍生物，乙基纤维素、润滑油、己内酰胺、马来酸酐、锡等加金属皂类等多种化合物的抗氧剂。此外，还可用于聚氨酯催化剂的钝化剂、杀虫剂和各种有机化合物的稳定剂等。
用途
该品在60℃时阻聚效能较对苯二酚高25倍，为烯烃单体蒸馏或贮运时的高效阻聚剂，尤其用于苯乙烯、丁二烯、氯丁二烯、异戊二烯等单体。也用于氯乙烯、乙烯基吡啶、α-烯烃、壬烯、环戊二烯、异戊二烯、丙烯酸、甲基丙烯酸及其酯类、氯化烯烃、聚氨酯等。该品也用作聚乙烯、聚丙烯、聚氯丁二烯、合成橡胶、尼龙等聚合物的抗氧化剂，以及用作油脂及其衍生物，乙基纤维素、润滑油、己内酰胺、马来酸酐、锡等加金属皂类等多种化合物的抗氧剂。此外，还可用于聚氨酯催化剂的钝化剂、杀虫剂和各种有机化合物的稳定剂等。