In recent years, with the development of automobile industry, the requirements on the light resistance, weather resistance and mobility resistance of its surface paint are becoming higher and higher. Due to the traditional solid polymer stabilizer can not meet the requirements, and the use of liquid stabilizer is a development direction. Benzotriazole uv absorber has the advantages of oil resistance, color resistance, low volatilization and good compatibility with polymer, so it has gradually developed into the most commonly used high efficiency UV absorber in the plastic industry and automobile coating area.
The mechanism of benzotriazole UV absorber is to convert the absorbed light energy into heat energy, which is also based on the Tautomer. The intramolecular hydrogen bond directly affected its light stabilization. The stronger the hydrogen bond is, the more energy is needed to destroy it, the more light energy is absorbed, and the higher the stability effect is. What’s more, o-hydroxy benzotriazole compounds have a strong absorption in the whole ultraviolet region.
OMNISTAB UV1130 is a representative product of liquid o-hydroxy benzotriazole uv absorber. UV 1130 is a mixture of 50% ethylene glycol monoesterification product, 38% ethylene glycol diesterification product and 12% non-reactive polyethylene glycol. Due to the large amount of hydroxyl groups in the product, it can interact with the amino group in automobile finish paint resin, thus improving its stability effect. It has good high temperature resistance and extraction resistance, especially suitable for industrial and automotive coatings with high weather resistance requirements, and can also provide adequate protection for sensitive substrates such as wood.
The structural formula and index of OMNISTAB UV1130
Hindered amine light stabilizer (HALS) has attracted extensive attention since its appearance due to its excellent light stability performance, and its advantage characteristic which distinguishes it from other types of light stabilizer is its nitrogen oxygen free radical regeneration characteristic. This makes it only need a small amount of addition to achieve excellent protective effect. LS292 is a liquid HALS product of our company, which has very good solubility in most coatings, even in the coating system with high content of pigments.
The Structure of OMNISTAB LS292
In recent years, a large number of studies have shown that o-hydroxy benzotriazole uv absorbers and hindered amines light stabilizers (HALS) have synergism in many cases, effectively improving product quality and reducing cost. Thus, OMNISTAB UV5151 came into being.
OMNISTAB UV5151 is a combination product of UV1130 and LS292 in accordance with 2:1. This compound liquid uv absorber successfully combines the wide spectrum of benzotriazole uv absorber and stable effect of HALS. Adding UV5151 into the coating can effectively improve the life of the coating and prevent surface cracking and luster loss. Excellent thermal stability and environmental durability make it suitable for the protection of industrial coatings, which is used under high temperature baking system and extremely harsh conditions. Based on its wide absorption range, it can provide effective protection for light-sensitive substrates such as wood, plastic, etc.
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