申请人:IDEMITSU PETROCHEMICAL CO. LTD.
公开号:EP0321691A2
公开(公告)日:1989-06-28
A process for producing aromatic polyester which comprises: mixing 5 to 70 mol % (as calculated by converting the repeating unit mentioned below into one molecule) of polyethylene terephthalate (A) with repeating unit represented by a formula (I),
having an inherent viscosity at 30 °C of 0.05 to 1.5 dl/g in an equal weight mixed solvent of tetrachloroethane and phenol, and 95 to 30 mol % of an acyloxyl benzoic acid (B) represented the general formula (II),
with 0.1 to 20 mol % based on the total amount of (A) and (B), of a diacyloxy aromatic compound (C) represented by general formula (III),
and reacting the resulting mixture. The aromatic polyester is excellent in elasticity and mechanical strength, as well as toughness.
一种生产芳香族聚酯的工艺,包括:在等重量的四氯乙烷和苯酚混合溶剂中,混合 5 至 70 摩尔 %(按将下述重复单元转换成一个分子计算)的聚对苯二甲酸乙二醇酯(A)和由式(I)代表的重复单元、
在等重量的四氯乙烷和苯酚混合溶剂中,30℃时的固有粘度为 0.05 至 1.5 分升/克,以及 95 至 30 摩尔%的酰氧基苯甲酸(B),其代表通式为(II)、
以(A)和(B)的总量为基准,加入 0.1 至 20 摩尔%的通式(III)代表的二乙氧基芳香族化合物(C)、
并对所得混合物进行反应。这种芳香族聚酯具有优异的弹性、机械强度和韧性。