| 摘要 |
A method for the preparation of a plasticizer comprising di-tertiary octyl-diphenyloxide having a viscosity measured at 25 DEG C of 1000 to 2100 centistokes, said method comprising reacting diphenyloxide, di-isobutylene and a "Friedel-Crafts" catalyst comprising aluminium chloride, washing the reaction product resulting there-from successively with aqueous solutions of hydrochloric acid and sodium carbonate, wherein intermediate and following said successive washing steps, said product is subjected to at least one wash with hot water wherein said hot water ranges in temperature from 60 DEG C to 100 DEG C. This plasticizer may be employed in admixture with resinous cellulosic derivatives, specifically ethylcellulose, which are manufactured into continous film or strip by an extrusion process. |
