| 摘要 |
Phosphorus acid-aryl ester-amides of formula (I) and phosphorous acid-aryl ester-amide-halides of formula (II) are both claimed as are also (i) prepn. of (I) by reacting (II) with a specified Gringard cpd.; (ii) prepn. of (II) by reacting an appropriate dihalide with a specified amine; and (iii) use of (I), alone or together with a phenolic antioxidant, in the stabilisation of plastics. n = 1 or 2; R1 = (i) when n = 1, phenyl (opt. with 1-3 substits.), benzyl, alpha-Me-benzyl or alpha,alpha-di-Me-benzyl, or naphthyl (opt. substd. with 1-5 substits.) where at least one of the substits is 1-8C alkyl-oxy or -thio or 6-10 aryl or aryloxy or halogen of atomic no. 9-35 and the remainder (excluding the naphthyl residue) can be a non-aromatic 1-8C hydrocarbon residues; (ii) when n = 2, phenylene opt. substd. with up to 2 non-aromatic 1-8C hydrocarbon residues, etc., R2 = non-aromatic 1-8C hydrocarbyl, aryl or opt. substd. arylmethyl with the aryl having 6-10C; R3 = H or 1-18C alkyl-oxy or -thio, or as per R2; and R4 and R5 = 1-22C alkyl, 2-21C oxa- or thia-alkyl, 3-18C alkenyl or alkynyl, 3-24C alkoxy-carbonylalkyl, 5-12C cycloalkyl, 6-14C aryl, etc., and X = Cl or Br. USE/ADVANTAGE - (I) can be used directly for polymer stabilisation without the need to isolate it in a pure form. |
