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Fluorescence labeling polyether carboxyl acids antisludging agent and preparation

A technology of polyether carboxylic acid and fluorescent labeling, which is applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., and can solve the problem of inability to realize online measurement and monitoring without fluorescent tracer groups and other problems, to achieve excellent results and good compatibility

Inactive Publication Date: 2008-10-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The latest Ca 3 (PO 4 ) 2 The antiscalant is acrylic acid-allyloxypolyethoxysulfonate phosphorus-free copolymer (AA-APES) from American Betz Company, which has excellent performance and is non-phosphorus and environmentally friendly, especially Ca 3 (PO 4 ) 2 High efficiency, but there is no fluorescent tracer group in its structure, so online measurement and monitoring cannot be realized

Method used

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  • Fluorescence labeling polyether carboxyl acids antisludging agent and preparation
  • Fluorescence labeling polyether carboxyl acids antisludging agent and preparation
  • Fluorescence labeling polyether carboxyl acids antisludging agent and preparation

Examples

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example 1

[0020] Example 1: at N 2 Add 100g allyloxypolyethoxy ether, 80gNaOH in the four-neck flask of protection, under N 2 Under protection, basify at 60°C for 1h to obtain allyloxypolyethoxy sodium. Take by weighing 100g allyloxy polyethoxy sodium, 120g chloroacetic acid, 80g NaOH, in N 2 Carboxymethylation was carried out at 80°C for 6 hours under protection to obtain a mixture of sodium allyloxypolyethoxycarboxylate and allyloxypolyethoxycarboxylate. in N 2Under protection, add 10g 8-hydroxy-1,3,6-pyrene trisulfonate sodium, 50g dimethyl sulfoxide, 3g NaOH, 50g allyl chloride into a four-neck flask, stir at room temperature for 4h, filter, 60℃ After removing dimethyl sulfoxide by distillation under reduced pressure, add acetone 10 times based on the weight of 8-hydroxy-1,3,6-pyrenetrisulfonate sodium, filter, and vacuum dry at 30°C for 48 hours to obtain 8-allyloxy Sodium-1,3,6-pyrenetrisulfonate. Under N2 protection, the mixture of 100g allyloxy polyethoxy sodium carboxylate...

example 2

[0022] Example 2: at N 2 Add 90g allyloxypolypropoxy ether, 70gNaOH in the four-neck flask of protection, under N 2 Alkaline at 70°C for 1 h under protection to obtain allyloxypolypropoxysodium. Take by weighing 100g allyloxy polypropoxy sodium, 100g chloroacetic acid, 50g NaOH, in N 2 Carboxymethylation at 80°C for 6 h under protection to obtain a mixture of sodium allyloxypolypropoxycarboxylate and allyloxypolypropoxycarboxylic acid. in N 2 Under protection, add 10g 8-hydroxy-1,3,6-pyrene trisulfonate sodium, 100g dimethyl sulfoxide, 12g NaOH, 90g allyl chloride into the four-neck flask, stir at room temperature for 4h, filter, 60℃ After removing dimethyl sulfoxide by distillation under reduced pressure, add acetone 10 times based on the weight of 8-hydroxy-1,3,6-pyrenetrisulfonate sodium, filter, and vacuum dry at 30°C for 48 hours to obtain 8-allyloxy Sodium-1,3,6-pyrenetrisulfonate. in N 2 Under protection, the mixture of 100g allyloxy polypropoxy sodium carboxylate...

example 3

[0024] Example 3: at N 2 Add 100g allyloxypolyethoxy ether, 80gNaOH in the four-neck flask of protection, under N 2 Under protection, basify at 60°C for 1h to obtain allyloxypolyethoxy sodium. Take by weighing 100g allyloxy polyethoxy sodium, 120g chlorobutyric acid, 80g NaOH, in N 2 Carboxymethylation at 70°C for 4 hours under protection to obtain a mixture of sodium allyloxypolyethoxycarboxylate and allyloxypolyethoxycarboxylate. in N 2 Under protection, add 20g sodium 8-hydroxy-1,3,6-pyrenetrisulfonate, 80g dimethyl sulfoxide, 10g NaOH, 50g allyl chloride into a four-neck flask, stir at room temperature for 4h, filter, 60°C After removing dimethyl sulfoxide by distillation under reduced pressure, add acetone 9 times the weight of 8-hydroxy-1,3,6-pyrenetrisulfonate based on the weight of sodium pyrenetrisulfonate, filter, and vacuum dry at 30°C for 48 hours to obtain 8-allyloxy Sodium-1,3,6-pyrene trisulfonate. in N 2 Under protection, the mixture of 100g allyloxy poly...

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Abstract

The invention discloses a fluorescence labeling polyether carboxylic acids scale inhibitor and a preparation method thereof, which relates to the preparation of the fluorescence labeling polyether carboxylic acids scale inhibitor which has fluorescent tracing but no phosphorus, can realize the online detection and automatic dosing of the phosphorus-free scale inhibitor, and is applicable to the scale inhibition and the fluorescent tracing and monitoring of calcium phosphate in an industrial circular cooling water system. The fluorescence labeling polyether carboxylic acids scale inhibitor is obtained by the free radical trimerization of vinyl-contained unsaturated double bond monomer, allyloxy polyether carboxylic acid monomer or carboxylate monomer and allyloxy monomer containing pyrene fluorophore. The structural formula is as shown: with the dosage of 2-25 mg / L and at the temperature of 40-80 DEG C, the inhibition rate of Ca3(PO4)2 is 92.00-99.89 percent. When the dosage of 2-30 mg / L is measured by a fluorescence spectrophotometer (EX460nm, EM510nm), the fluorescence intensity is 25-400 degrees.

Description

technical field [0001] The invention relates to the preparation of a fluorescent-labeled polyether carboxylic acid scale inhibitor that can be fluorescently traced without phosphorus, which can realize the on-line detection and automatic administration of the phosphorus-free scale inhibitor, and is suitable for scale inhibition and antiscaling of calcium phosphate in industrial circulating cooling water systems. Fluorescent tracer monitoring belongs to the technical field of water treatment. Background technique [0002] Due to the needs of sustainable development, people began to realize that the use of phosphorus-containing scale inhibitors is easy to cause bacteria and algae to multiply and form environmental pollution such as red tides. The use of low-phosphorus or non-phosphorus scale inhibitors has attracted more and more attention. The formulation of antiscalants in cooling water treatment has developed from chromium to phosphorus, from high phosphorus to low phosphor...

Claims

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Application Information

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IPC IPC(8): C02F5/10C08F216/14C08F222/06
Inventor 周钰明杜琨吴林华
Owner SOUTHEAST UNIV
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