| 摘要 |
A mixture of the zinc salts of O,O-dialkyldithiophosphoric acids prepared by contacting a feedstock comprising a mixture of one or more C1 to C30 primary alcohol(s) and one or more C4 to C20 secondary alcohol(s) with P2S5 to form a mixture of O,O'-dialkyldithiophosphoric acids and thereafter neutralizing the mixture of acids by contact with zinc oxide, the secondary alcohol(s) forming not less than 25 mol.% of the feedstock mixture. |
