Method for preparing high-alkali value (TBN400) synthesized calcium alkyl benzene sulfonate

A technology of calcium alkylbenzenesulfonate and alkylbenzenesulfonic acid, which is applied in the preparation of sulfonic acid, lubricating compositions, additives, etc., and can solve the problems of high production cost and product price, long production cycle, and low product yield , to achieve the effects of guaranteed quality and performance, low production and processing costs, and low viscosity

Active Publication Date: 2008-12-10
JINZHOU DPF TH CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above two one-step processes solve the problems of backward technology, complicated operation, long production cycle and low product yield in the two-step process, the production cost and product price are high.

Method used

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  • Method for preparing high-alkali value (TBN400) synthesized calcium alkyl benzene sulfonate

Examples

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Effect test

example 1

[0023] Adopt the mixed sulfonic acid of long-chain linear alkylbenzene sulfonic acid and high boiler heavy alkylbenzene sulfonic acid as main raw material, described long-chain linear alkylbenzene sulfonic acid is long-chain (C 18 -C 26 ) linear alkylbenzene sulfonic acid, the carbon atoms of its alkyl chain are from C18 to C26, according to the mass ratio of long chain (C 18 -C 26 ) active matter content of linear alkylbenzene sulfonic acid is 85%, free acid content is 0.1%, average molecular weight is 480, according to mass ratio long chain (C 18 -C 26 ) The content of monosubstituted alkylbenzenesulfonic acid in the linear alkylbenzenesulfonic acid is 85%. Long-chain linear alkylbenzene sulfonic acid is preferably long-chain (C 20 -C 24 ) linear alkylbenzene sulfonic acid, that is, long-chain linear alkylbenzene sulfonic acid with a mass ratio of 85% of the sulfonic acid components of carbon 20, carbon 22 to carbon 24 in the alkyl side chain Acid, wherein the mass rat...

example 2

[0026] Adopt the mixed sulfonic acid of long-chain linear alkylbenzene sulfonic acid and high boiler heavy alkylbenzene sulfonic acid as main raw material, described long-chain linear alkylbenzene sulfonic acid is long-chain (C 18 -C 26 ) linear alkylbenzene sulfonic acid, the carbon atoms of its alkyl chain are from C18 to C26, which should be based on the mass ratio of the long chain (C 18 -C 26 ) active matter content of linear alkylbenzene sulfonic acid is 99.9%, free acid content is 0.5%, average molecular weight is 560, according to mass ratio long chain (C 18 -C 26 ) The content of monosubstituted alkylbenzenesulfonic acid in linear alkylbenzenesulfonic acid is 99.9%. Long-chain linear alkylbenzene sulfonic acid is preferably long-chain (C 20 -C 24 ) linear alkylbenzenesulfonic acid, that is, long-chain linear alkylbenzenesulfonic acid with a mass ratio of 99.9% of the sulfonic acid components of carbon 20, carbon 22 to carbon 24 in the alkyl side chain Acid, wher...

example 3

[0029] Adopt the mixed sulfonic acid of long-chain linear alkylbenzene sulfonic acid and high boiler heavy alkylbenzene sulfonic acid as main raw material, described long-chain linear alkylbenzene sulfonic acid is long-chain (C 18 -C 26 ) linear alkylbenzene sulfonic acid, the carbon atoms of its alkyl chain are from C18 to C26, which should be based on the mass ratio of the long chain (C 18 -C 26 ) active matter content of linear alkylbenzene sulfonic acid is 92%, free acid content is 0.3%, average molecular weight is 520, according to mass ratio long-chain (C 18 -C 26 ) The monosubstituted alkylbenzenesulfonic acid content in the linear alkylbenzenesulfonic acid is 93%. Long-chain linear alkylbenzene sulfonic acid is preferably long-chain (C 20 -C 24 ) linear alkylbenzene sulfonic acid, that is, long-chain linear alkylbenzene sulfonic acid with a mass ratio of 92% of the sulfonic acid components of carbon 20, carbon 22 to carbon 24 in the alkyl side chain Acid, wherein...

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Abstract

The invention provides a method for preparing high base number (TBN400) synthetic calcium alkyl-benzene sulfonate. The method comprises the following steps of: adopting a mixed acid of long-chain linear alkyl-benzene sulfonic acid and high-boiling heavy alkyl-benzene sulfonic acid, calcium oxide and/or calcium hydroxide, low-carbon alcohol, alkaline-earth metal halide or nitrate, and a mixture of alkaline-earth metal alkylphenol or alkaline-earth metal alkylphenate and polyisobutylene succinic anhydride for a neutralization reaction in the presence of a solvent and cutback oil at a temperature of between 40 and 80 DEG C; then, passing through carbon dioxide to a product of the neutralization reaction at a temperature of between 40 and 60 DEG C for a carbonation reaction; and producing high base synthetic alkyl-benzene sulfonate with a total base number (TBN) of 400mgKOH/g by adopting a process of a one-step method. The product is divided into high-base number (TBN400) synthetic alkyl-benzene sulfonate containing chlorine and high-base number (TBN400) synthetic alkyl-benzene sulfonate without the chlorine. The product produced by adopting the method with low viscosity, small turbidity, easy filtration, light color and no skin formation has the advantages of excellent high-temperature detergency, excellent anti-foaming property and excellent heat storage stability.

Description

technical field [0001] The invention relates to a preparation method for synthesizing calcium alkylbenzenesulfonate with high alkali value (TBN400). Background technique [0002] High base number (TBN400) synthetic calcium alkylbenzene sulfonate is a kind of lubricating oil additive, a lubricating oil detergent widely used and used in a large amount, and a main additive component for preparing high-grade internal combustion engine oil and marine oil. Adding it to the oil can effectively neutralize the acidic substances produced by the corrosion of the machine parts and the oxidation of the oil. When compounded with other additives, it can improve the detergency and dispersibility of the lubricating oil, and disperse and wash the piston and cylinder. Remove the sludge, paint film and soot formed on the surface, remove the deposits formed on the surface of the engine, and keep it clean, prolong the service life of the engine and reduce environmental pollution. [0003] At pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/30C07C309/62C07C303/22C10M135/10C10N30/04
Inventor 魏奇
Owner JINZHOU DPF TH CHEM CO LTD
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