Irgafos XP 30

Phosphoric acid, ELV-(2,4-di-W-butyl-6-methylphenyl)ethylester;lactone - type antioxidant”: 145650-60-8; 181314-48-7

Ciba Specialty Chemicals

抗氧化剂 >> 混合 Antioxidant >> Blend 醇酸树脂 Alkyd Resins 聚酯 Polyester 涂层 >> 粉末涂层 Coatings >> Powder Coatings 线圈涂层 Coil Coating 常规工业维护 General Industrial /Maintenance IRGAFOS XP 30 is a highly effective, low-volatile and hydrolysis resistant synergistic blend of high-performing antioxidants for coating resins. It protects resin polymers against oxidation during resin synthesis, manufacturing of the paint, processing (thermal curing and overbaking) and the designed life-time of the final coating. IRGAFOS XP 30 provides excellent protection against discoloration and change of physical properties caused by excessive heat exposure. IRGAFOS 38: Phosphoric acid, ELV-(2,4-di-W-butyl-6- methylphenyl)ethylester, stabilised with < 2.0% talcite; Molecular Weight: 514.7; CAS Number: 145650-60-8 HP-136, also referred to as “lactone - type antioxidant”: 2(3H)-benzofuranone, 5,7-ELV(1,1-dimethylethyl)-3-hydroxy-, reaction products with R-xylene Molecular Weight: 350; CAS Number : 181314-48-7 Although the solubility in customary organic solvents is low, incorporation into coating resins at recommended use levels is possible. IRGAFOS XP 30 provides outstanding thermal and colour stability to a variety of coating resins upon exposure to high temperatures, e.g. 200 - 250°C. It is particularly suited to stabilise alkyd and polyester resin based coating systems that are used in applications such as · industrial powder coatings (electrical and gas oven heating) · coil coatings · other high bake coatings A special feature of IRGAFOS XP 30 is its efficiency in the presence of NOx gases and thus its potential to function in critical gas oven curing conditions. In electrical ovens and gas-fired ovens where the coated substrates being exposed to only low NOx concentrations, a combination of IRGAFOS XP 30 with hindered phenolic antioxidants such as IRGANOX 1076 or IRGANOX 1010 typically leads to a synergistic performance improvement. However, in the presence of NOx the same combination often exhibits adverse discoloration effects. In this case phenol-free synergistic antioxidant systems can be obtained by using IRGAFOS XP 30 in combination with hindered amine light stabilisers (HALS) such as TINUVIN 111 FD, TINUVIN 292 or TINUVIN 622 LD. Although IRGAFOS XP 30 alone is a highly effective antioxidant system, combinations with other phosphite or phosphonite costabilisers such as IRGAFOS 38, IRGAFOS 168 and IRGAFOS XP 60 or with thiosynergists such as IRGANOX PS 800 may demonstrate further advantages in specific applications. The amount of IRGAFOS XP 30 required for optimum performance should be determined in trials covering a concentration range. Mixture of 67 % IRGAFOS 38 and 33 % HP-136. Highly effective, low-volatile and hydrolysis resistant synergistic blend of high-performing antioxidants for coating resins. Protects resin polymers during resin synthesis, manufacturing of the paint, processing (thermal curing and overbaking) and the designed life-time of the final coating. Provides excellent protection against discoloration and change of physical properties caused by excessive heat exposure. Provides outstanding thermal and colour stability to a variety of coating resins upon exposure to high temperatures, e.g. 200 - 250°C. Suited to stabilise alkyd and polyester resin based coating systems that are used in industrial powder coatings (electrical and gas oven heating), coil coatings and other high bake coatings. Efficient in the presence of NOx gases, has potential to function in critical gas oven curing conditions. In electrical ovens and gas-fired ovens where the coated substrates being exposed to only low NOx concentrations, a combination with hindered phenolic antioxidants typically leads to a synergistic performance improvement. However, in the presence of NOx the same combination often exhibits adverse discoloration effects. In this case phenol-free synergistic antioxidant systems can be obtained by the use in combination with hindered amine light stabilisers (HALS). Combinations with other phosphite or phosphonite costabilisers or with thiosynergists may demonstrate further advantages in specific applications. Recommended usage level: 0.1-0.5% alone or in combination with synergists.