| 摘要 |
Sterically hindered phenols of the formula <IMAGE> in which V is a radical of the formula <IMAGE> where M, n, R, R1, R2, R3, R4, R5, R6 and X have the meaning given in Claim 1, are described. These antioxidants are suitable for increasing the thermal and photochemical stability of undyed and dyed polyamide fibre materials. They are distinguished by a nearly pH-independent, high exhaust rates. |
