Poly carbonates endowed with high-fluidity characteristics and process for preparing them
申请人:ENICHEM S.p.A.
公开号:EP0409313A2
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 the kind of aromatic or cycloaliphatic p-hydroxyanilides, having the general formula:
wherein:
R is an either linear or branched alkyl radical, containing from 1 to 4 carbon atoms, or is a hydrogen atom or is a halogen atom;
R₁ is either hydrogen or halogen;
and the corresponding compounds in which the ring bearing the R and R₁ substituents is a saturated ring.
通过使用芳香族或环脂族对羟基苯胺类链封端剂,可获得线性、热塑性、芳香族聚碳酸酯,其平均粘度分子量在 10,000 至 30,000 之间,在熔融状态下具有高流动性:
其中
R 是含有 1 至 4 个碳原子的直链或支链烷基,或者是氢原子,或者是卤素原子;
R₁ 是氢原子或卤素原子;
以及含有 R 和 R₁ 取代基的环为饱和环的相应化合物。