| abstract |
PROBLEM TO BE SOLVED: To provide an antioxidant solubilizer, an antioxidant composition and a compounded oil capable of dissolving and adding an antioxidant to various base oils at a high concentration, preventing deterioration and extending the life. obtain. The antioxidant comprises 50 to 94% by weight of an antioxidant solubilizer containing a polyether compound of the formula (1) and 6 to 50% by weight of a phenolic antioxidant or a sulfur-containing antioxidant. The composition is blended with a base oil to obtain a blended oil. Embedded image (R 1 is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms; R 2 is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms; R 1 and R 2 may be the same or different; AO is an alkyleneoxy group having 3 or 4 carbon atoms, EO is an ethyleneoxy group, m and n are each an integer of 0 to 10, m + n is 1 to 10, and p is 1 to 3. The integers in {} may be random or block-like. ) |