Fluorescence labeling acrylic acid-sodium acrylic sulphonate co-polymer water treatment agent and preparation method thereof

Abstract

The present invention discloses a fluorescence labeled acroleic acid-sodium allylsulfonate copolymer and a method for preparing the same. The method comprises the following steps: 4-bromine-1,8-naphthalic anhydride, methylamine, N-methyl diethylenediamine, and the like are used as material and is subject to amidation reaction, amination reaction, and quaternization reaction to be synthesized, and a novel fluorescence monomer 4-(N'-methyl-1-diethylenediamine)-N-methyl-1,8-naphthalimide allyl chloride quaternary ammonium salt is obtained by synthesis; and then the fluorescence monomer is copolymerized with sodium hypophosphite, acroleic acid and sodium allylsulfonate to obtain the FC-AA-SAS product. The raw materials for synthesizing the fluorescence monomer and the polymer are easy to obtain and the reaction conditions are mild. When the product is used in circulating water, the thickness of a medicament in a circulating water system can be accurately, duly and quickly measured through the variation of the fluorescence intensity, and the on-line medicine addition and the quantitative control are realized. Therefore, the on-site operation is largely simplified, and the management level is improved. The functional groups, such as sulfonic group, phosphino group and the like, are introduced into molecules, and thus the polymer has a plurality of functions, such as fluorescent tracing, anti-precipitation, disgregation and the like.

Description

Technical field: [0001] The invention relates to a scale-inhibiting dispersant for an industrial circulating cooling water system and a preparation method thereof, in particular to a fluorescently marked acrylic acid-sodium propylene sulfonate copolymer and a preparation method thereof. Background technique: [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. [0003] The use of fluorescent tracer technology to realize the online detection of water treatment chemicals and the research of automatic dosing control techno...

AI Technical Summary

Problems solved by technology

However, the current domestic research is mainly focused on the modification of polymers, which requires that the original water treatment agent must have modifiable amine or carboxyl groups, and the conditions required for polymer modification are relatively high, such as high temperature and high pressure. , so it is relatively 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. Since the raw materials for the reaction are rare, and most polymers have decomposition problems under this high temperature and high pressure, this greatly limits the further development of this technology. Development and Application

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