| 摘要 |
A reaction product of a hydrocarbyl-substituted succinic acylating agent and a polyalkylene amine is provided to prevent or retard efficiently the oxidation of a liquid composition as a biofuel, and be used optionally in combination with BHQ. A reaction product of a hydrocarbyl-substituted succinic acylating agent and a polyalkylene amine is used optionally in combination with BHQ to prevent or retard the oxidation of a liquid composition comprising 2 wt.% or more of an oil derived from a plant or animal material. The liquid composition comprises 5 wt.% or more, preferably 25 wt.% or more, more preferably 50 wt.% or more, for example 95 wt.% or more of an oil derived from a plant or animal material. The reaction product of a hydrocarbyl-substituted succinic acylating agent and a polyalkylene amine is used in combination with BHQ. The reaction product of a hydrocarbyl-substituted succinic acylating agent and a polyalkylene amine comprises a PIBSA-PAM or a PIBSA-HPAM material. The prevention or retardation of the oxidation of the liquid composition is determined by using the Rancimat Test(ISO 6886).
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