Depressant molecule consists of two parts, namely the long-chain alkyl and polar groups, then we have to understand is that the polar group-related information.
Depressant polar group in the molecule, can be adsorbed on the surface of the wax crystals to establish a barrier to change the crystal habit of the wax, preventing the crystal particles close to each other to improve the low temperature flow properties of crude oil.
Depressant polar group content are factors that affect the crystallization behavior depressant. Increases depressant polar group content, the content of long-chain alkyl relative reduction, thereby reducing the degree of crystallinity Depressant. When the content of the polar group to a high, the spatial arrangement of the barrier chain to increase rigidity, pour point depressants crystallization more difficult. If the degree of crystallinity, low pour point depressant and its ability to reduce the wax molecules eutectic precipitation. But if too depressant depressant crystallization ability polarity is relatively lower, then pour point depressant dispersion of wax crystals fall. Accordingly, the content of the polar group freezing point depressant with a long chain alkyl group have an optimum ratio in order to obtain the best modification effects.
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