The isothiazolinone fungicide is safer as a substitute for traditional preservatives.
In the field of industrial anti-corrosion, traditional preservatives such as formaldehyde releasers and phenolic compounds are gradually being replaced by new technologies due to their toxicity risks and environmental burdens. Isothiazolinones, as a new generation of broad-spectrum fungicides, have become the core solution to replace traditional preservatives due to their high efficiency, low toxicity, and environmentally friendly characteristics. Enterprises like dalian tianwei chemical have promoted technological innovation to deeply integrate the bactericidal efficacy of isothiazolinones with industrial needs, driving the industry towards a safer and more sustainable development direction.
Industry Application: Breakthrough Practices from Coatings to Oil Fields
Case 1: Upgrade of Anti-corrosion in the Water-based Coatings Industry
An international coatings company developed a high-weather-resistant exterior latex paint with excellent durability. This paint needs to maintain its performance for a long time in high-temperature and high-humidity environments. Traditional anti-corrosive agents such as Kason (MIT/CIT compound) tend to decompose, causing the coating to mold. However, by using the isothiazolinone from Shandong Zhengtai New Materials, at a 0.2% addition rate, the following results were achieved:
Broad-spectrum antibacterial: The inhibition rate against molds and yeasts has been increased to 99.5%, preventing the coating from becoming alkaline and getting moldy;
Weather resistance breakthrough: After undergoing an 80℃ heat storage test, the active ingredients did not decompose, and the outdoor actual lifespan was extended to 15 years;
Environmental friendliness: Free of formaldehyde and heavy metals, meeting the requirements of FSC certification.
Case 2: Microbial Control in Oilfield Water Injection System
An offshore oilfield water injection well was corroded due to the growth of sulfate-reducing bacteria (SRB), resulting in an inspection pump cycle of only 6 months. After switching to the compound agent of isothiazolinone and quaternary ammonium salt from Dalian Tianwei:
Deep sterilization: The kill rate of SRB and iron bacteria is over 99.9%, and the formation of biofilms is inhibited;
Salt tolerance: The activity retention rate in 15% NaCl salt water is over 90%, suitable for seawater injection;
Economy: The inspection pump cycle is extended to 18 months, and the annual increase in crude oil production is 12,000 tons.
