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Method for preparing polystyryl-pyridine resin and its application

A polystyrene and pyridine technology, applied in the field of preparation of polystyrene-pyridine resin, can solve the problems of low cuprous oxide efficiency, difficult use of antifouling paint, easy release of cuprous oxide, etc. Enhanced self-polishing performance, good miscibility

Inactive Publication Date: 2005-06-08
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inherent large specificity and strong hydrophilicity of cuprous oxide, these coatings are prone to sedimentation and cuprous oxide is easily released into water bodies, resulting in difficulties in the use of antifouling coatings, low efficiency of cuprous oxide and potential environmental pollution. Shortcomings

Method used

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Examples

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Embodiment Construction

[0007] 1. Preparation of polystyrene-pyridine resin

[0008] When preparing, add 10g of chloromethyl polystyrene resin (PSCH 2 Cl) and 40mL of pyridine, after swelling the resin for 24 hours, add 45g of sodium hydroxide and 45mL of water, reflux and stir in a boiling water bath for 15 hours, cool, pour into 500mL of water, stir and let stand, change the water after settling for 1~ 3 times, then suction and filter, wash with water until it is neutral and free of chloride ions, and then wash with ethanol until there is no pyridine smell, vacuum-dried, grind it into fine powder, filter with a 100 mesh filter, and obtain the polyphenylene used in the present invention Ethylene-pyridine resin.

[0009] The above-mentioned chloromethylated polystyrene has a chlorine content of more than 23% and a crosslinking degree of 3 to 5%. The above-mentioned alkaline catalyst sodium hydroxide can be changed to potassium hydroxide, calcium hydroxide or barium hydroxide. The above-mentioned washing ...

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Abstract

A process for preparing the polystyrene-pyridine resin includes such steps as immersing chloromethyl polystyrene in pyridine, adding alkaline catalyst, heating by boiling water bath while stirring for reacting, filtering, washing, baking and grinding. Said polystyrene-pyridine resin can be used to prepare the marine anti-fouling paint by proportionally mixing it with resin solution, plasticizer, filler and anti-fouling agent.

Description

Technical field [0001] The invention relates to a preparation method of polystyrene-pyridine resin, which can be applied to the preparation of marine antifouling paint. Background technique [0002] As we all know, marine organisms attach to the bottom of the ship, increase sailing resistance, reduce the speed of the ship, and consume more energy; attach to the marine aquaculture net, block the mesh, affect the seawater convection, and cause the development of marine fish and shellfish and even die; attach to the seawater to cool The inner wall of the pipeline will cause the pipeline to block and cause a major accident. All these have brought huge economic losses to mankind. The best way to solve marine fouling is to paint with antifouling agent. At present, the copolymer of tributyltin methacrylate and methyl methacrylate and cuprous oxide (Cu 2 As an antifouling coating, the composition of O) can be applied to the surface of the bottom of a ship, which can effectively prevent t...

Claims

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Application Information

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IPC IPC(8): C08F112/14C09D125/06C09D5/16
Inventor 徐焕志于良民张志明姜晓辉
Owner OCEAN UNIV OF CHINA