Triphenyl phosphite is a phosphite compound, which is an auxiliary antioxidant with light stabilizing effect. It is suitable for polyvinyl chloride, polypropylene, polystyrene, polyester, ABS resin, epoxy resin, etc. Triphenyl phosphite is widely used as a chelating agent for polyvinyl chloride. When metal soap is used as a main stabilizer, this product can reduce the risk of metal chloride, maintain the transparency of the product and inhibit the color change. In addition, triphenyl phosphite is also used as a flame retardant plasticizer.
The phenyl diisooctyl phosphite is obtained by transesterification of triphenyl phosphite and isooctanol in the presence of a catalyst, and phenylisooctyl phosphite can be used as a secondary antioxidant. It has good anti-tarnishing effect and can increase oxidation resistance and light stability. It has a chelating agent function in polyvinyl chloride and has low toxicity and can be used in plastic medical devices.
In addition, Triphenyl phosphite can be transesterified with methanol in the presence of sodium methoxide to form trimethyl phosphite.
Octyl diphenyl phosphite can be prepared by reacting Triphenyl phosphite with octanol in sodium methoxide solution.
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