申请人:ENICHEM S.p.A.
公开号:EP0409312A2
公开(公告)日:1991-01-23
Linear, thermoplastic, aromatic polycarbonates having an average viscosimetric molecular weight comprised within the range of from 10,000 to 30,000, endowed with high fluidity in the molten state, are obtained by means of the use of chain capping agents of phenol-amidic nature, having the general formula:
wherein:
R, R₁, which can be either equal to, or different from, each other, are H or CH₃;
R₂ is an either linear or branched alkyl radical, containing from 1 to 7 carbon atoms, or a cycloalkyl or alkylene-cycloalkyl radical of from 5 to 7 carbon atoms, with said alkyl, cycloalkyl or alkylene-cycloalkyl radicals possibly bearing a halogen atom.
线性、热塑性、芳香族聚碳酸酯的平均粘度分子量在 10,000 至 30,000 之间,在熔融状态下具有高流动性,可通过使用具有通式的苯酚-氨基性质的链封端剂获得:
其中
R、R₁ 可以是 H 或 CH₃,也可以互不相同;
R₂ 是含有 1 至 7 个碳原子的直链或支链烷基,或含有 5 至 7 个碳原子的环烷基或亚烷基环烷基,所述烷基、环烷基或亚烷基环烷基可能含有卤素原子。