| 摘要 |
The present invention relates to a composition comprising: -at least one ortho-diphenol derivative in a content of greater than or equal to 5% by weight relative to the total weight of the composition, -at least one alkali metal or alkaline-earth metal (bi)carbonate compound, -at least one water-soluble organic solvent in a content of greater than or equal to 10% by weight relative to the total weight of the composition, -at least one reducing agent. |
