| abstract |
The invention relates to nitriles, in particular 3,5-di-tert-butyl-4-hydroxyphenylphthalonitriles, which can be used as antioxidants in the thermal destruction of hydrocarbons, which can be used in petrochemistry. The goal is to create a new, more effective antioxidant of the specified class thylamine or p-toluenesulfonic acid) at elevated temperatures. Yield,%, m.p., amp ° C, gross f-la: a) 53, 273-274; C22H21CI3N20; b) 81; 266; С22Н22С з№0; c) 86; 230-234; С2зН25МзО. New substances on antioxidant activity are similar to ionol or higher in action (in-in) in polyethylene and in oil. In general, they reduce the rate of oxidation of hydrocarbons by 100-150 times. Ztabl. Yo |