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Method for preparing polystyryl-pyridine resin and its application

A technology of polystyrene and pyridine, which is applied in the field of polystyrene-pyridine resin preparation, can solve the problems of low efficiency of cuprous oxide, difficulty in using antifouling coatings, and easy release of cuprous oxide, so as to reduce the cost of coating, Enhanced self-polishing performance, good miscibility effect

Inactive Publication Date: 2006-03-22
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Experimental program
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Embodiment Construction

[0007] 1. Preparation of polystyrene-pyridine resin

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

[0009] The chlorine content of the above-mentioned chloromethylated polystyrene is greater than 23%, and the degree of crosslinking is 3-5%. Above-mentioned alkaline catalyst sodium hydroxide can be used potassium hydroxide, calcium hydroxide or barium hydroxide instead. The above-mentioned washing solvent eth...

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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, increasing navigation resistance, reducing ship speed, and consuming more energy; attaching to marine farming nets, causing blockage of the mesh, affecting seawater convection, and causing stunted or even death of marine fish and shellfish; attaching to seawater cooling If the inner wall of the pipeline is damaged, it will cause the pipeline to be blocked, resulting in a major accident. All of these have brought huge economic losses to human beings. The best way to solve marine biofouling is to paint with antifouling agent. At present, the copolymer of tributyltin methacrylate and methyl methacrylate and cuprous oxide (Cu 2 O) the composition is used as a kind of antifouling paint, is coated on surfaces such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/30C08F112/14C09D5/16C09D125/06
Inventor 徐焕志于良民张志明姜晓辉
Owner OCEAN UNIV OF CHINA