| 摘要 |
Reaction products of humic acid with long-chain fatty acyl partial amides of a polyalkylene polyamine, such as the reaction product obtained using tall oil fatty acids and tetraethylene pentamine, the salt linkage being optionally, partially or largely converted to amide linkage by heat treatment. The humic acid optionally may be in part reacted with a long-chain alkyl ammonium cation. The novel products are useful in compounding oil base well-working fluids; as corrosion inhibitors; and for other uses.
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