申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0404116A2
公开(公告)日:1990-12-27
This invention provides a polyester, which is composed of a constitutive unit of formula (I) and a constitutive unit of formula (II) in a proportion of (I)/(II) of being from 0.1/99.9 to 99.1/0.1 as a molar ratio and which has a logarithmic viscosity (ηinh) of being 0.1 or more:
where R₀ is a fluorine-free monovalent organic group having from 1 to 40 carbon atoms, R₁, R₂ and R₃ are independently a divalent organic group having from 1 to 40 carbon atoms, and n is 0 or 1.
This invention also provides a method of preparing the polyester, in which (A) a monoepoxy compound of formula (III)
where R₀ and n have the same meanings as mentioned above, (B) a polyester or a polyester precursor and (C) a dicarboxylic acid compound are reacted and polymerized.
本发明提供了一种聚酯,它由式(I)的组成单元和式(II)的组成单元组成,摩尔比(I)/(II)为 0.1/99.9 至 99.1/0.1,对数粘度(ηinh)为 0.1 或以上:
其中 R₀ 是具有 1 至 40 个碳原子的无氟一价有机基团,R₁、R₂ 和 R₃ 独立地是具有 1 至 40 个碳原子的二价有机基团,n 是 0 或 1。
本发明还提供了一种制备聚酯的方法,其中 (A) 式 (III) 的单环氧化合物
其中 R₀ 和 n 的含义与上述相同,(B) 一种聚酯或一种聚酯前体和 (C) 一种二羧酸化合物反应并聚合。