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Alkoxy ethoxy propyl isothiazolinone and its preparation process and use

A technology of alkoxyethoxypropyl isothiazolinone and phenoxyethoxypropylamine, which is applied in the field of isothiazolinone derivatives, can solve problems such as toxicity, environmental pollution, and human health, and achieve low cost , long service life and low bioavailability

Inactive Publication Date: 2005-06-22
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Until the 1980s, people gradually realized that this organotin compound was highly toxic, would pollute the environment, and even affect human health through the food chain

Method used

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  • Alkoxy ethoxy propyl isothiazolinone and its preparation process and use
  • Alkoxy ethoxy propyl isothiazolinone and its preparation process and use
  • Alkoxy ethoxy propyl isothiazolinone and its preparation process and use

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Embodiment Construction

[0010] 1. Preparation of dimethyl β-dithiodipropionate

[0011] Add 200ml 10% (wt.) NaHCO successively in a 500ml three-necked flask equipped with a stirring device, a condenser, and a thermometer 3 Solution, 21.7g (0.25mol) methyl acrylate, cooled to -5 ~ 10 ℃ and maintained at this temperature, dropwise added the above cooled sodium polysulfide solution within 0.5 ~ 2 hours. After the dropwise addition, the ice-water bath was removed, and the reaction was continued at room temperature for 5-6h, and the reaction ended. Stand to separate layers, separate the water layer, add 120ml 1mol / L Na to the oil layer 2 SO 3 solution, and then continue to react at 50°C for 2 to 5 hours, and the reaction ends. Then let stand to separate the layers, separate the water layer, and wash the oil layer with water. The obtained crude product was distilled under reduced pressure to obtain 26.8 g of a light yellow oily substance with a yield of 89.3% and a boiling point of 182-185° C. / 7 mmHg. ...

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Abstract

Disclosed is an alkoxy ethoxy propyl isothiazolinone, whose molecule formula is C8H10Cl2NO3SR, the preparation comprises reacting Na2Sx with acrylic methyl ester to obtain dithiodipropionic dimethyl ester, then reacting with alkoxy ethoxy alanine to obtain N, N'-dialkoxy ethoxy propyl dithioamides, and the latter further reacting with sulfuryl chloride. The invention can realize an antifouling agent for rapid degradation in the environment, very small influence to the biological availability for sea creatures can be achieved.

Description

technical field [0001] The invention relates to an isothiazolinone derivative, in particular to an alkoxyethoxypropyl isothiazolinone compound, its preparation method and its application in preparing marine antifouling paint. Background technique [0002] When the bottom of the ship, underwater components, fishing nets, etc. are placed in water and water with various aquatic organisms (such as oysters, barnacles, mussels, algae, aquatic bacteria, etc.) for a long time, they will cause the surface of these devices to be fouled and lose their original There are functions. Especially when such aquatic organisms adhere to them and reproduce and grow, the appearance, strength and function of these devices will be greatly reduced, thereby greatly shortening their lifespan and increasing economic losses. In order to solve this problem, the most common method is to apply an antifouling paint with excellent antifouling properties. For example, an antifouling agent containing organi...

Claims

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Application Information

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IPC IPC(8): C07D275/03
Inventor 于良民姜晓辉张志明徐焕志
Owner OCEAN UNIV OF CHINA
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