摘要
由苯胺、二硫化碳和硫磺合成的粗Ｍ直接同吗啉和次氯酸钠反应合成促进剂ＮＯＢＳ，节省了精制粗Ｍ所需的设备，避免了粗Ｍ精制过程中的环境污染。最适宜反应条件为：粗Ｍ、吗啉和次氯酸钠的摩尔比为１∶２∶２，反应温度为３５～８５℃，反应时间为５～６ｈ。在最适宜反应条件下，收率可达８４１％（以粗Ｍ中含纯Ｍ的量计算）。ＮＯＢＳ熔点为８０～８６℃。
A method is given for preparing N-oxydiethylene-2-benzothiazole sulphenamide (NOBS)directly by using crude 2-mercaptobenzothiazole (M)which is synthesized by benzenamine,carbon disulphide and sulphur.The device for purifying crude M was saved and its pollution was obviated because purifying crude M is not necessary.The suitable condition is that temperature varies from 35℃ to 85℃,molar ratio of crude M to morpholine to sodium hypochlorite is 1∶2∶2,the overall reaction time is 5～6h.Under the optimum condition,the yield of NOBS is 84.1%(calculated on the basis of pure M).The melting point of NOBS is 80～86℃.
出处
《精细化工》
EI
CAS
CSCD
北大核心
1998年第2期38-40,共3页
Fine Chemicals
关键词
粗M
NOBS
硫化促进剂
橡胶
原料
crude 2-mercaptobenzothiazole(M),N-oxydiethylene-2-benzothiazole sulphenamide(NOBS),curing catalyst
