Alkoxylpropylisothiazolinone and preparation method and use thereof

US7442240B2 · kind B2 · utility

Assignee

• OCEAN UNIVERSITY OF CHINA · CN

Inventors

• Liangmin Yu · 富官庄镇, CN
• Xiaohui Jiang · Beijing, CN
• Zhiming Zhang · Indianapolis, US
• Huanzhi Xu · Qingdao, CN
• Changcheng Li · Beijing, CN

Key dates

• Filing date: Sep 30, 2005
• Grant date: Oct 28, 2008
• Expiry date: Sep 30, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/1625
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An alkoxylpropyl isothiazolinone of formula: C6H6Cl2NO2SR, in which R is CH3, CH2CH3, CH(CH3)2, CH2CH2CH2CH3, CH2CH2OCH3 or CH2CH2OC6H5Cl. A method for preparing the isothiazolinone by reacting sodium polysulphide with methyl acrylate to obtain dimethyl dithiodipropionate, followed by aminolysis with alkoxyl propylamine to obtain N,N′-dialkoxylpropyldithio-dipropionamide, which is then reacted with sulfuric chloride. The alkoxylpropyl-isothiazolinone of the invention can be used for preparing marine antifouling paint coating as antifoulant, and also used as bactericide.