26172-55-4Relevant articles and documents
Preparation method of 2-methyl-4-isothiazoline-3-one aqueous solution
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Paragraph 0045-0047, (2020/12/31)
The invention provides a preparation method of a 2-methyl-4-isothiazoline-3-one aqueous solution. The method comprises the following concrete steps: uniformly mixing N,N'-dimethyl-3,3'-dithiodipropionamide or N-methyl-3-mercaptopropionamide with a solvent; adding a halogenating agent into the mixed solution, and carrying out a halogenation ring closing reaction; filtering to obtain a product, washing a filter cake with ethyl acetate, and drying to obtain a 2-methyl-4-isothiazoline-3-one hydrochloride solid; and dissolving the 2-methyl-4-isothiazoline-3-one hydrochloride solid by using a sodiumcarbonate aqueous solution to obtain an aqueous solution of which the pH value is 5.0-7.0 and the mass fraction of 2-methyl-4-isothiazoline-3-one is 50%. According to the invention, the purity of the2-methyl-4-isothiazoline-3-one obtained by the method reaches 99.9% or above, and the content of 5-chlorine-2-methyl-4-isothiazoline-3-one can be controlled to be 100 ppm or below.
Pipeline type continuous production method of 3-isothiazolinone compound
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Paragraph 0018, (2019/12/02)
The invention discloses a pipeline type continuous production method of a 3-isothiazolinone compound, which comprises the following steps: carrying out mixed reaction on a thioamide compound, a catalyst, a solvent and chlorine through a pipeline reactor system, and carrying out after-treatment after the reaction is completed to obtain the 3-isothiazolinone compound. According to the method, the defects of large occupied area, small productivity, low efficiency, high energy consumption and small safety coefficient caused by existing batch production of the 3-isothiazolinone compound are overcome; the invention provides a mode for continuously producing the 3-isothiazolinone compound, so that the reaction process is easy to control, energy consumption is reduced, the production efficiency and the safety coefficient of the production process are improved, and the process is an efficient and energy-saving safe production process.
STABLE COMPOSITIONS OF THIABENDAZOLE AND IODINE-CONTAINING FUNGICIDES
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, (2015/02/25)
The present invention relates to stable compositions for the fungicidal equipment of thermoplastic polymers, in particular PVC, comprising thiabendazole, at least one iodine-containing fungicide and at least one epoxide and optionally further fungicidally active compounds, and also to methods for preparing these formulations and to uses thereof for the protection of thermoplastic polymers against attack and destruction by microorganisms. Moreover, the invention relates to mold-resistant PVC materials equipped with the compositions according to the invention.