| 摘要 |
Bisphenol antioxidants for polyolefins These have the formula: in which R1 and R2 are H or R1 and R2 together with the carbon atoms to which they are bound and the linking group A, form a C5-C7 aliphatic ring, and the group A represents a carbonyl group, a hydroxy methylene group, a methylene group or groups of formula where R3 = H or CH3.
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