N-cyclohexylthyl-phthalimide is also known as coke delay agent, early vulcanization inhibitor, anti-coke agent CTP, anti-coke agent PVI, at room temperature for white, light yellow or light yellow brown crystals, and recrystallized products from n-heptane for white crystals. Soluble in acetone, benzene, toluene, ether, ethyl acetate and ethyl acetate, slightly soluble in gasoline, insoluble in kerosene and water, soluble in hot carbon tetrachloride, ethanol and heptane. Cyclohexane is reacted with hydrochloric acid to form cyclohexane chloride. Chlorothiocyclohexane was obtained by sulfurization with sulfur. Finally, the product was prepared by the reaction of phthalimide and chlorothiocyclohexane in the presence of acid absorbent. It can be used for natural rubber and synthetic rubber, which can effectively prevent the scorch of rubber material in the process of processing and improve production efficiency. At the same time, it has a restoring effect on the adhesive material that has been subjected to high heat or slight scorch. N-cyclohexyl thiophthalimide is widely used in sulfur-vulcanized elastomers, and it has good anti-coke effect when combined with various general accelerators. With the anti-coke agent CTP, whether it is open or high temperature fast mixing, it can adopt a mixing process and effectively prevent coke burning. It can be used with accelerators M, DM, TMTD and effective or semi-effective vulcanization system to improve the properties of the compound. It can improve the production efficiency of calender and extrusion. It is beneficial to improve the adhesion of rubber and brass-plated steel wire, and is widely used in various general rubber and special rubber, including nitrile rubber, ethylene propylene or EPDM rubber, butyl rubber and neoprene rubber. Storage should avoid too high and then too low temperature and humidity, placed in a ventilated dry place to avoid heat, moisture. Combustible, low toxicity.
Application:
The product is a very effective anti-coke agent for all sulfur vulcanized dienes and low unsaturation rubber, such as natural rubber, styrene butadiene rubber, nitrile rubber, butyl rubber, neoprene rubber, isopentane rubber, butadiene rubber, EPDM rubber, etc. have a good anti-coke effect, and its activity is not affected when used with other rubber additives. There are no adverse side effects such as foaming and contamination. It can greatly improve the storage stability of the compound and prevent natural vulcanization during storage. Compared with the previous anti-coke agent, the effect is good, the amount is less, the usual amount is 0.1-0.5 parts.
It is mainly used for natural rubber and synthetic rubber, especially when used with secondary sulfonamide accelerators, to form a good vulcanization system
