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Novel diesel oil pour point depressant

A diesel pour point depressant and a new technology, applied in the field of oil additives, can solve the problems of high cost and limited effect of reducing the cooling filter point of high-wax diesel oil, and achieve the effect of reducing the cold filter point

Inactive Publication Date: 2012-03-21
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] At present, T1804 is the commonly used diesel pour point depressant in China, but the effect of T1804 on reducing the cooling filter point of high waxy diesel is relatively limited, and at the same time, the cost is relatively high

Method used

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  • Novel diesel oil pour point depressant
  • Novel diesel oil pour point depressant
  • Novel diesel oil pour point depressant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Preparation of a multi-component compound of polyethylene vinyl acetate (T1804), SMA-MA-α copolymer and toluene

[0023] Into a three-necked flask equipped with a thermometer and a constant-speed stirring device was added 60g of polyethylene vinyl acetate (T1804), 15g of toluene was heated to 50℃ in a water bath, and 25g of hexadecyl methacrylate-maleic anhydride-α olefin ( SMA-MA-α) copolymer, stir at medium speed for 30 minutes, and finish when the compound in the flask is a homogeneous liquid.

Embodiment 2

[0024] Example 2: Preparation of the main component SMA-MA-α copolymer in the compound

[0025] Add 28g of hexadecyl methacrylate (SMA), 3g of maleic anhydride (MA), 6g of α-olefin to a four-necked flask equipped with a thermometer, condenser, dropping funnel and constant speed stirring device, and then add 20ml of toluene. Under nitrogen protection, the temperature was raised to 60°C under stirring to dissolve the reactants, and then 0.4 g of the catalyst benzoyl peroxide was weighed, and after it was fully dissolved in 20 ml of toluene, it was added to the dropping funnel for later use. When the temperature rises to 80-100°C, the catalyst is slowly added dropwise, and the reaction is continued for 5 hours under stirring to obtain hexadecyl methacrylate-maleic anhydride-α olefin (SMA-MA-α) copolymer

Embodiment 3

[0026] Example 3: Preparation of SMA-MA-α copolymer, the main component of the compound

[0027] Add 28g of hexadecyl methacrylate (SMA), 3g of maleic anhydride (MA), 6g of α-olefin to a four-necked flask equipped with a thermometer, condenser, dropping funnel and constant speed stirring device, and then add 20ml of toluene. Under nitrogen protection, the temperature was raised to 60°C under stirring to dissolve the reactants, then 0.8 g of the catalyst benzoyl peroxide was weighed, and after being fully dissolved in 20 ml of toluene, it was added to the dropping funnel for later use. When the temperature rises to 80-100°C, the catalyst is slowly added dropwise, and the reaction is continued for 5 hours under stirring to obtain hexadecyl methacrylate-maleic anhydride-α olefin (SMA-MA-α) copolymer

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Abstract

The invention relates to a novel diesel oil pour point depressant. The novel diesel oil pour point depressant is prepared from 50-60% of polyethylene vinyl acetate (T1804), 20-30% of a hexadecyl methacrylate-maleic anhydride-alpha olefin (SMA-MA-alpha) copolymer and 15-20% of toluene, wherein the hexadecyl methacrylate-maleic anhydride-alpha olefin copolymer is a copolymer obtained by treating hexadecyl methacrylate, maleic anhydride and an alpha-olefin as raw materials and toluene as a solvent, and carrying out solution polymerization on the raw materials under the effect of a catalyst benzoyl peroxide. The prepared novel diesel oil pour point depressant of the invention can be applied to diesel oils refined from cycloalkyl crude oil and paraffin crude oil; and the hexadecyl methacrylate-maleic anhydride-alpha olefin and polyethylene vinyl acetate (T1804) which have a good synergistic effect allow the cold filter clogging temperature of diesel oils to be effectively reduced.

Description

Technical field [0001] The invention belongs to the field of oil additives and is a new type of diesel pour point depressant, which can effectively reduce the cold filter plugging point of diesel. Background technique [0002] The earliest synthetic synthetic pour point depressant was made by Davis in 1931 using chlorinated paraffin and naphthalene through Reid-Crafts reaction to produce the trade name Balafluo pour point depressant. A patent for polymethacrylate was published in 1937. Polyalkylstyrene was published in 1948. Since then, various new diesel pour point depressants have been developed rapidly, or improvements have been made to existing pour point depressants. Olefin polymers appeared in the 1950s, and alkylphenol polymers, copolymers of ethylene and vinyl acetate appeared in the 1960s. [0003] The diesel oil pour point depressants currently used internationally mainly include the following categories: [0004] a) Ethylene-vinyl acetate copolymer. Ethylene-vinyl acet...

Claims

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Application Information

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IPC IPC(8): C10L1/197C10L1/196C10L1/16
Inventor 仙鸣周渝兀新养龚婷
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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