3-benzoyl ethyl acrylate diesel oil pour point depressant, diesel oil pour point depressant composition as well as preparation and application of 3-benzoyl ethyl acrylate diesel oil pour point depressant composition

Abstract

The invention relates to a 3-benzoyl ethyl acrylate diesel oil pour point depressant, a diesel oil pour point depressant composition as well as preparation and application of the 3-benzoyl ethyl acrylate diesel oil pour point depressant, namely a preparation method of poly (tetradecyl methacrylate)-3-benzoyl ethyl acrylate. The preparation method comprises the following steps: mixing tetradecyl methacrylate and 3-benzoyl ethyl acrylate in an organic solvent; adding a polymerization initiator, and stirring and reacting at 110 DEG C for 8 hours to obtain the product, the diesel oil pour point depressant composition comprises the following components in percentage by weight: 20-40% of PAO; 0-20% of polyethylene glycol; 30 to 50% of poly (tetradecyl methacrylate)-3-benzoyl ethyl acrylate; and 10 to 20% of isooctyl palmitate. Compared with the prior art, the diesel oil pour point depressant composition provided by the invention can hinder mutual crosslinking among wax crystals by changing the crystallization behavior of paraffin crystals, changing the growth direction of the crystals and inhibiting the generation of large wax crystals, so that a compact three-dimensional network structure cannot be formed, and the low-temperature fluidity of diesel oil is improved.

Description

technical field [0001] The invention belongs to the technical field of diesel pour point depressants, and relates to a 3-benzoyl ethyl acrylate diesel pour point depressant, a diesel pour point depressant composition and its preparation and application. Background technique [0002] Diesel is an indispensable fuel in industrial transportation and agricultural production. It is safe, durable, and safe to store. At low temperature, when the carbon chain length increases, the solubility in diesel oil will decrease, and it will start to precipitate in the form of wax crystals. The wax crystals will wrap the rest of the liquid in a three-dimensional network structure, causing it to solidify and lose fluidity , thus affecting the normal use and transportation of diesel. In particularly extreme weather, the wax precipitation of diesel affects the normal operation of diesel engines. In order to solve this problem, it is necessary to adopt certain methods to improve the low-tempera...

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Problems solved by technology

[0004] At present, the types of pour point depressants mainly include polymethacrylates, ethylene-vinyl acetate (EVA), maleic anhydride, polyalpha-olefins (PAO) and nitrogen-containing ones, which are good for diesel oil. The pour point depressing effect, but there are also some shortcomings, such as a large amount of addition, poor dispersion and poor universality, etc.

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