High-stability nonionic N-vinyl butyrate lactam iodine and preparation method thereof

Abstract

The invention provides a preparation method of high-stability nonionic N-vinyl butyrate lactam iodine, which is to prepare high-stability nonionic N-vinyl butyrate lactam iodine by stirring nonionic N-vinyl butyrate lactam, iodine and a grinding aid at 50 to 90 DEG C and a rotation speed of 50 to 800r / min for 1 to 12 hours, wherein the K value of the nonionic N-vinyl butyrate lactam is 32+-1, the main peak PD value is less than or equal to 1.6, and the water content is less than or equal to 2.5 percent; preferably, the grinding aid is one or several of sodium chloride, sodium citrate, sodium carbonate and sodium phosphate, the added amount of the grinding aid is 0.02 to 2 percent based on the total amount of the nonionic N-vinyl butyrate lactam and the iodine; and the N-vinyl butyrate lactam is polyvinylpyrrolidone (PVP)-K32. The invention also provides high-stability nonionic N-vinyl butyrate lactam iodine prepared by the method. With high stability, the high-stability nonionic N-vinyl butyrate lactam iodine can be stored and used for a long term and is suitable for large-scale promotion and use.

Description

technical field [0001] The present invention relates to the technical field of compounds, more specifically to the technical field of nonionic N-vinylbutyrolactam iodine, in particular to a highly stable nonionic N-vinylbutyrolactam iodine and related preparation methods. Background technique [0002] Nonionic N-vinylbutyrolactam iodide (PVP-I) is a yellowish-brown to reddish-brown amorphous powder, which is an amorphous form formed by the complexation of nonionic N-vinylbutyrolactam (PVP) and iodine Complex iodine is a kind of iodophor. PVP-I is an excellent disinfectant, and it was included in the Pharmacopoeia of the 1990 edition of our country. It can maintain the bactericidal power for a long time. It is a broad-spectrum and powerful bactericidal disinfectant. It has a strong killing effect on viruses, bacteria, fungi and mold spores. It has been approved by the Chinese Pharmacopoeia as a disinfectant that can be directly used by the human body. [0003] Non-ionic N-v...

AI Technical Summary

Problems solved by technology

[0004] But the stability of the PVP-I produced by the traditional method is not ideal, and the content of available iodine is reduced due to easy decomposition and sublimation in the storage process, which cannot meet our required quality standards, especially in summer. Unstable, causing inconvenience to long-term storage and use