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Phosphine-based Marpropy multipolymer containing fluorescent base-group and its production

A technology of horse-propylene copolymer and fluorescent group, which is applied in the field of phosphino-mercapto-propylene copolymer and its preparation, can solve the problems of limited development and application, rare reaction raw materials, decomposition, etc., to reduce interference, simplify on-site operation, and improve performance stable effect

Inactive Publication Date: 2008-08-13
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of polymer modification, this requires that the original water treatment agent must have a modifiable amine group or carboxyl group, and the conditions required for polymer modification are relatively high, such as high temperature and high pressure, so it is more difficult
For example, Chinese patent CN1229091A discloses a water treatment agent with tracer and scale inhibition and dispersion functions, but the water treatment agent is made by the (trans) amidation reaction between organic fluorescent derivatives and the reaction with the polymer directly. Marked polymers, this reaction requires high temperature and high pressure, and requires no obvious decomposition of the polymer during the reaction, because the raw materials for the reaction are rare, and most polymers have decomposition problems under this high temperature and high pressure, which limits the development and application of this technology. application

Method used

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  • Phosphine-based Marpropy multipolymer containing fluorescent base-group and its production
  • Phosphine-based Marpropy multipolymer containing fluorescent base-group and its production
  • Phosphine-based Marpropy multipolymer containing fluorescent base-group and its production

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Example 1: Combining Figure 1 to Figure 5 , add 5.6g (ie 0.02mol) 4-bromo-1,8-naphthalene dicarboxylic anhydride, 50mL glacial acetic acid in a three-necked flask, stir mechanically, add N,N-dimethylethylenediamine 2.6 mL (ie 0.024mol), under nitrogen protection, heated to reflux for 5h. After the reaction, 30 mL of deionized water was added, and neutralized with 50% (mass fraction) sodium hydroxide until the pH was 8-9. Suction filtration, the solid was washed with water to obtain a khaki solid. Recrystallized with DMF to obtain 5.23 g of compound 4-bromo-N-(2-N',N'-dimethylaminoethyl)naphthalimide, with a yield of 75.2%.

[0035] Weigh 4.1 g (ie 0.012 mol) of the compound 4-bromo-N-(2-N', N'-dimethylaminoethyl) naphthalimide into a three-necked flask, add 50 mL of methanol, 1.3 g (that is, 0.024mol) sodium methoxide, heated in a water bath, protected by nitrogen, stirred mechanically, and reacted for 6 hours. After the reaction, neutralize to slightly alkaline wi...

Embodiment 2

[0040] Example 2: Combining Figure 1 to Figure 5 , add 10.08g (ie 0.036mol) 4-bromo-1,8-naphthalene dicarboxylic anhydride, 80mL glacial acetic acid into the three-necked flask, stir mechanically, add N,N-dimethylethylenediamine 3.3 mL (ie 0.03mol), under nitrogen protection, heated to reflux for 5h. After the reaction, 50 mL of deionized water was added, and neutralized with 50% (mass fraction) sodium hydroxide until the pH was 8-9. Suction filtration, the solid was washed with water to obtain a khaki solid. Recrystallized with DMF to obtain 6.94 g of light yellow product 4-bromo-N-(2-N',N'-dimethylaminoethyl)naphthalimide, with a yield of 66.5%.

[0041] Weigh 4.1 g (0.012 mol) of the compound 4-bromo-N-(2-N', N'-dimethylaminoethyl) naphthalimide into a three-necked flask, add 50 mL of methanol, 0.975 g (that is, 0.018mol) sodium methoxide, heated in a water bath, protected by nitrogen, stirred mechanically, and reacted for 6 hours. After the reaction, neutralize to sli...

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Abstract

A phosphino-based mapropyl copolymer containing fluorescent group and its production are disclosed. The process is carried out by taking 4-bromine-1,8-naphthalic anhydride, glacial acetic acid and N, N-dimethyl-ethylenediamine as raw materials to obtain 4-bromine-N-(2-N,, N,-dimethylbenzidine-ethyl)naphthalimide, reacting it with sodium methoxide to induce methoxy-group to obtain 4-methoxy-N-(2-N,, N,- dimethylbenzidine-ethyl)naphthalimide, reacting it with allyl chloride to obtain fluorescent monomer 4-methoxy-N-(2-N,, N,- dimethylbenzidine-ethyl)naphthalimide allyl ammonia chloride with fluorescent characteristic and double-bond, polymerizing it with sub-sodium phosphate, maleic anhydride, acroleic acid and propenyl-sodium sulfate to obtain the final product. It has fluorescent tracting, corrosion-inhibting, scale-inhibiting and dispersion functions.

Description

a technical field [0001] The invention relates to a corrosion and scale inhibitor for an industrial circulating cooling water system and a preparation technology thereof, in particular to a phosphinohormone copolymer containing a fluorescent group and a preparation method thereof. Two background technology [0002] In the process of using water treatment chemicals, dosing concentration is a very important parameter. If the concentration is too high, it will cause waste, increase the treatment cost and water pollution; if the concentration is too low, it will not be able to play the role of water treatment agent. The traditional technical process of detecting water treatment chemicals is complicated and has many interference factors, which does not meet the conditions of on-line measurement and real-time control. Therefore, using fluorescent tracer technology to realize on-line detection and automatic dosing control of water treatment chemicals, through the application of fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F230/02
Inventor 雷武夏明珠张跃华王风云
Owner NANJING UNIV OF SCI & TECH
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