Thermoplastic wholly aromatic polyimide esters and process for producing the same
申请人:IDEMITSU PETROCHEMICAL CO. LTD.
公开号:EP0314173A2
公开(公告)日:1989-05-03
Disclosed herein are a thermoplastic wholly aromatic polyimide ester consisting essentially of structural units represented by the general formulas I, II, III, and IV:
wherein X and Y are either -O- or -CO- and may be either identical with or different from each other, n is an integer of 0 or 1, X group and imide group in unit II are present at para or meta position to each other, two carbonyl groups in unit IV are present at para or meta position to each other, and each end of units I, II, III, and IV is bonded to another end through ester bond,
and wherein the polyimide ester has a melt viscosity of 1.0 to 1.0 x 10⁵ Pa·s measured at a shear stress of 0.025 MPa and a temperature of 300 to 400°C; and a process for producing the thermoplastic wholly aromatic polyimide ester.
本发明公开了一种热塑性全芳香族聚酰亚胺酯,主要由通式 I、II、III 和 IV 所代表的结构单元组成:
其中X和Y为-O-或-CO-,可以彼此相同或不同,n为0或1的整数,单元II中的X基团和酰亚胺基团彼此位于对位或元位,单元IV中的两个羰基彼此位于对位或元位,单元I、II、III和IV的每一端通过酯键与另一端结合、
其中聚酰亚胺酯在 0.025 MPa 的剪切应力和 300 至 400°C 的温度下测得的熔融粘度为 1.0 至 1.0 x 10⁵ Pa-s;以及一种生产该热塑性全芳香族聚酰亚胺酯的工艺。