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Ester compound and its preparation method and application

A technology of ester compounds and compounds, applied in the field of fatty acid ester compounds, can solve problems such as weak chemical bonds, very sensitive to temperature and electrolytes, and easy failure

Active Publication Date: 2016-05-11
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in traditional metalworking fluids, the emulsifier molecules and the emulsified substance molecules are combined by intermolecular forces, because the intermolecular forces are weaker than the chemical bonds
Therefore, traditional metalworking fluids are very sensitive to temperature and electrolytes, are prone to failure, and have poor stability

Method used

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  • Ester compound and its preparation method and application
  • Ester compound and its preparation method and application
  • Ester compound and its preparation method and application

Examples

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preparation example Construction

[0084] Such as figure 1 The preparation method of shown above-mentioned ester compound, comprises the steps:

[0085] S10. In the presence of an esterification catalyst and a water-carrying agent, react compound A with the following structural formula with trimethylolpropane at 180°C-260°C for 1h-30 at a molar ratio of 1:1, and obtain Compound B having the following structural formula.

[0086] Compound A: Compound B:

[0087] Among them, -R 1 It is an alkyl group having 1 to 17 carbon atoms, an alkenyl group having 2 to 17 carbon atoms, a cycloalkyl group having 2 to 17 carbon atoms, or an aryl group having 6 to 17 carbon atoms.

[0088] In one embodiment, -R 1 for -CH 3 、-C n h 2n+1 or -C n h 2n-1 , wherein n is an integer of 2-17.

[0089] In S10, the esterification catalyst is at least one of acetate, titanium compound and tin compound, and the mass ratio of the esterification catalyst to trimethylolpropane is 0.01-1:100.

[0090] The acetate is zinc acetate...

Embodiment 1

[0128] In a 1000mL three-neck flask equipped with a thermometer, an electric stirrer, a water separator, and a condenser tube, add 134.17g (1.0mol) of trimethylolpropane, 144.20g of isooctanoic acid, 1.34g of stannous oxalate and 13.41g of toluene, and heat Raise the temperature to 200°C to reflux the system. When the water content reaches the theoretical water content, add 236.18g (2.0mol) of succinic acid, continue the reaction until the water content reaches the theoretical water content, and then add polyethylene oxide terminated by a methyl group at one end (The average molecular weight is 350), react until the water content reaches the theoretical water content, cool, change to a vacuum distillation device, and distill out toluene. Thereafter, it was adsorbed with silica gel at 120° C. for 2 hours, and filtered. Next, it dried under reduced pressure (40 Pa) and 120 degreeC for 2 hours, and obtained the ester compound.

[0129] The ester compound that embodiment 1 is mad...

Embodiment 2

[0131] In a 1000mL three-neck flask equipped with a thermometer, an electric stirrer, a water separator, and a condenser tube, add 134.17g (1.0mol) of trimethylolpropane, 144.20g of isooctanoic acid, 1.34g of stannous oxalate and 13.41g of toluene, and heat Raise the temperature to 200°C to reflux the system. When the water separation reaches the theoretical water separation, add 264.22g (2.0mol) glutaric acid, continue the reaction until the water separation reaches the theoretical water separation, and then add polyethylene oxide terminated by a methyl group at one end. (The average molecular weight is 350), react until the water content reaches the theoretical water content, cool, change to a vacuum distillation device, and distill out toluene. Thereafter, it was adsorbed with silica gel at 120° C. for 2 hours, and filtered. Next, it dried under reduced pressure (40 Pa) and 120 degreeC for 2 hours, and obtained the ester compound.

[0132] Carry out NMR test to the ester c...

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Abstract

The invention discloses an ester compound with a structural formula shown in the specification, wherein -R<1> is alkyl with 1-17 carbon atoms, alkenyl with 2-17 carbon atoms, naphthenic base with 2-17 carbon atoms or aryl with 6-17 carbon atoms; -R<2>- is -CH2-, -CmH2m- or -CmH(2m-2)-; m is an integer from 2 to 8; -R<3>- is -CH2-, -CkH2k- or -CkH(2k-2)-; k is an integer from 2 to 8; -P is a water-soluble polymer chain segment with molecular weight of 200-500. The ester compound has free carboxylic group and alkyl chain segment as well as water-soluble polymer chain segment; without adding an emulsifier, the ester compound has the characteristic of forming a stable emulsion after being mixed with water. The ester compound can realize self-emulsifying and improve the stability of metal working fluid. The invention also provides a preparation method of the ester compound and metal working fluid comprising the ester compound.

Description

technical field [0001] The invention relates to the field of fatty acid ester compounds, in particular to a self-emulsifying ester compound and its preparation method and application. Background technique [0002] In recent years, fatty acid esters have been widely used as additives in metalworking fluids. Traditional fatty acid esters are products of the reaction of natural fatty acids with monohydric alcohols or polyhydric alcohols, all of which are oil-soluble substances, and these substances have a low acid value, generally 1mgKOH / g-15mgKOH / g. Fatty acid esters are generally monofunctional additives, usually added to metalworking fluid formulations as lubricants, emulsifiers, anti-corrosion agents or coupling agents. So often, a usable metalworking fluid product has a complex formulation. However, as environmental, safety and health issues become increasingly prominent, metalworking fluid additives are also affected, and many of them are restricted in use. [0003] Wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/40C07C69/42C07C69/44C07C69/50C07C67/08C10M129/74C10N40/20
CPCC07C67/08C07C69/40C07C69/42C07C69/44C07C69/50C10M129/74C10M2207/283C10N2030/06C10N2030/12C10N2040/20
Inventor 孙蓉杨忠学陈毓暑杨瑞杰刘强
Owner SHENZHEN INST OF ADVANCED TECH
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