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專利名稱 Method for preparing arylphosphonite antioxidant
專利證號 US7232922B2
國別 美國
獲證日期 2007-06-19
專利摘要 A method for preparing an arylphosphonite antioxidant of the formula (I) below is disclosed, wherein Ar is First, the reactants 2-phenylphenol and phosphorus trichloride are heated under the existence of a zinc chloride catalyst for producing 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin (CDOP) of the formula (II) below: Next, the excess phosphorus trichloride is removed. Finally, an organic solution of a di-hydroxylphenol compound of the formula (III), Ar--(OH) 2 (III) wherein Ar is defined as the above, is heated with the CDOP of formula (II) to form the product of the formula (I). A method for preparing an arylphosphonite antioxidant of the formula (I) below is disclosed, wherein Ar is First, the reactants 2-phenylphenol and phosphorus trichloride are heated under the existence of a zinc chloride catalyst for producing 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin (CDOP) of the formula (II) below: Next, the excess phosphorus trichloride is removed. Finally, an organic solution of a di-hydroxylphenol compound of the formula (III), Ar-(OH)2 (III) wherein Ar is defined as the above, is heated with the CDOP of formula (II) to form the product of the formula (I).

IPC國際分類號

C07F000902 | C07F00096571 | C09K001532