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Organic silicate comprising ether, preparing process and application thereof

A technology of organosilicate and acrylic acid, which is applied in the direction of silicon organic compounds, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of unsatisfactory industrial production and poor corrosion inhibition effect of organosilicate, etc. Achieve the effects of avoiding eutrophication pollution, good corrosion inhibition effect, and not easy to silicate scale

Inactive Publication Date: 2004-09-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, so far, organosilicates are rarely used in circulating cooling water to replace phosphates as corrosion inhibitors. The main reason is that organosilicates have poor corrosion inhibition effects and cannot meet the needs of industrial production.

Method used

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  • Organic silicate comprising ether, preparing process and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment is the preparation of N, N'-two (γ-propyl sodium silicate)-dipolyoxyethylene ether {[(NaO) 3 SiCH 2 CH 2 CH 2 NH] 2 (CH 2 CH 2 OCH 2 CH 2 )}.

[0028] Add 95.7 g (0.42 mol) of γ-aminopropyltriethoxysilane with a molecular weight of 221.0 and a purity of 97% into a 250 mL 4-neck round bottom flask equipped with mechanical stirring, start stirring, and protect with nitrogen gas at the same time. Slowly heat the flask for 15 minutes to make the reaction materials warm up to 105°C, and weigh α, ω-dichlorodipolyoxyethylene ether (Cl-CH 2 CH 2 OCH 2 CH 2 -Cl) 29.8g (0.2mol) is placed in the dropping funnel, when the reaction flask material temperature is 105 ℃, begin to slowly use 2 hours to evenly drop in the reaction flask, the reaction temperature of the dropping process is maintained at 105~ At 115°C, α,ω-dichlorotripolyoxyethylene ether was added dropwise, and then reacted at 110-120°C for 2 hours.

[0029] After the reaction is complete, red...

Embodiment 2

[0034] The present embodiment is the preparation of N, N'-two (gamma-propyl sodium silicate)-pentaoxyethylene ether {[(NaO) 3 SiCH 2 CH 2 CH 2 NH] 2 CH 2 CH 2 (OCH 2 CH 2 ) 4}.

[0035]Weigh respectively 95.7g (0.42mol) of γ-aminopropyltriethoxysilane with a purity of 97%, and 57.3g of α, ω-dichloropentapolyoxyethylene ether with a purity of 275.0% according to the examples 1, to obtain 100.7g product (yield 82%).

Embodiment 3

[0037] The present embodiment is the preparation of N, N'-bis(γ-propyl sodium silicate)-octoxyethylene ether {[(NaO) 3 SiCH 2 CH 2 CH 2 NH] 2 CH 2 CH 2 (OCH 2 CH 2 ) 7}.

[0038] Take by weighing 95.7g (0.42mol) of gamma-aminopropyltriethoxysilane with a purity of 97% and 95% α, ω-dichlorooctoxyethylene ether 85.7g with a purity of 97%, and the operation steps are according to Example 1 , to obtain 111.9 g of product (yield 75%).

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Abstract

A ether containing organic silicate characterized in that, it has the structural formula disclosed in the specification, wherein the process for preparing the organic silicate comprises the steps of, carrying out amination reaction of gamma-amine propyl triethoxysilicane alkyl or gamma-amine propyl trimethylsilicane oxysilane with dichlorine polyoxyethylene ether or dichlorine-polyoxymethylene at the temperature of 50-180 deg. C for 1-10 hours, the obtained product is done through basic hydrolysis at the temperature of 50-150 deg. C for 0.5-5 hours to obtain the end product.

Description

technical field [0001] The invention relates to an ether-containing organic silicate and its preparation and application method. technical background [0002] With the rapid development of industry and economy, the eutrophication of the water environment is becoming more and more serious, causing frequent occurrence of red tides in coastal waters, rivers and lakes, causing serious deterioration of water quality, mass death of fish and shrimp, and heavy economic losses. The main reason for the frequent occurrence of red tides is the high concentration of phosphate in the water. Therefore, reducing the use and discharge of phosphate is of great significance for alleviating and ultimately avoiding the occurrence of red tides in water bodies. Phosphorus-containing water treatment agents are widely used because of their excellent corrosion and scale inhibition properties. How to reduce and avoid the use of phosphorus-containing water treatment agents has become an urgent problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C07F7/08C23F11/14
Inventor 李本高冯兰珍王秀
Owner CHINA PETROLEUM & CHEM CORP
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