Boya ve Kaplamalarda OIT-98 Antifungal Ajanın Kristalleşmesinin Nedenleri

Özet: OIT-98 (2-Octyl-2H-isothiazol-3-one, CAS: 26530-20-1) is an effective antimicrobial agent suitable for a wide range of applications including waterborne emulsions, coatings, adhesives, leather, polymer materials, non-woven fabrics, artificial leather, microfiber, canvas, wood, and paper. It provides long-lasting antifungal protection and exhibits low toxicity, high efficiency, and broad-spectrum efficacy. OIT-98 demonstrates potent fungicidal activity, ensuring optimal biocidal and antifungal performance.

Anahtar Kelimeler: OIT; OIT-98; 2-Octyl-2H-isothiazol-3-one; isothiazolin; CAS 26530-20-1; mildewproof; paints; coatings; leather

1. Arka plân

OIT-98 (2-n-octyl-4-isothiazolin-3-one, CAS: 26530-20-1) is an efficient bactericidal and mildewproof agent that exists as a light yellow oily liquid at room temperature. It is widely utilized in paints, coatings, leather, and other industries. However, under certain conditions, OIT-98 may undergo crystallization, which can adversely affect its performance. This report aims to analyze the underlying causes of OIT-98 crystallization.

2. Analysis of Crystallization Causes

The crystallization of OIT-98 may be attributed to several factors:

2.1 Temperature Variations

At room temperature, OIT-98 remains in a liquid state. However, at low temperatures (below 10°C), its solubility decreases, potentially leading to the precipitation of components and subsequent crystal formation. Additionally, repeated temperature fluctuations can promote crystallization by destabilizing the solution.

2.2 Saflık ve Kirlilikler

The presence of high-melting-point impurities in OIT-98 can serve as nucleation sites for crystal formation, especially during storage at low temperatures. By-products from incomplete purification during production can also contribute to crystallization.

2.3 Saklama Koşulları

Prolonged storage or exposure to humid environments can cause OIT-98 to absorb moisture or undergo minor chemical reactions, leading to crystal formation. Exposure to light or oxidative conditions can similarly compromise its stability and indirectly induce crystallization.

2.4 Solvent or Formulation Compatibility

Incompatibility between OIT-98 and other ingredients in paint formulations or leather treatment agents can result in phase separation or crystallization. The selection of inappropriate solvents, such as those with mismatched polarity, can lead to the precipitation of OIT-98.

In accordance with the technical specifications for environmentally friendly paints and coatings, the R&D team at Puyuan Pharm has developed a specialized anti-mildew biocide, OIT-98, tailored for these applications. This product undergoes rigorous processes including refining, purification, washing, and standing, all under stringent VOC control. These procedures ensure higher purity, and more potent bactericidal and anti-mildew effects. Consequently, it can be used across a broader PH range and effectively synergizes with other biocides to prevent loss of efficacy. The prolonged antimicrobial, anti-rot, and anti-mildew properties are notable. Moreover, due to strict production controls, this biocide is environmentally friendly and suitable for high-grade paint coatings and leather treatments.