| 摘要 |
The disclosure relates to a new class of compounds useful in stabilizing organic materials against the effects of heat and light, such materials especially including polymers such as polyolefins. The new compounds are hydrazine complexes of nickel thio-bis-phenolates, where the thio-bis-phenol is of the formula, <IMAGE> where R is selected from the group consisting of hydrogen, normal alkyl or normal alkenyl, and R1 is selected from the group consisting of a normal, secondary, tertiary or cyclic alkyl group. The hydrazines used in making the complexes are of the formula <IMAGE> where R2, R3 and R4 are independently chosen from the group hydrogen and primary, secondary and tertiary alkyl groups consisting of 1 to 8 carbon atoms and R3 and R4 may be joined together to form a heterocyclic structure.
|
