Anisotropic polymers having improved retention of physical properties at elevated temperatures and methods of manufacture thereof
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0081900A1
公开(公告)日:1983-06-22
An anisotropic-melt-forming polymer having improved stiffness retention at elevated temperatures comprising residues selected from residues (A) of dihydric phenols, aromatic dicarboxylic acids, hydroxyaromatic acids, aromatic diamines, aminophenols and aminoaromatic acids wherein at least 40 mole % of the residues (A) have their chain extending bonds in either coaxial or parallel and oppositely directed relationship and sufficient of non-linear residues (B) selected from at least one of:
and
to give a polymer having an improved retention of stiffness at elevated temperature compared with an otherwise similar polymer not containing said residues (B).
一种各向异性熔融成型聚合物,在高温下具有更好的刚度保持性,该聚合物包含选自二元酚、芳香族二羧酸、羟基芳香族酸、芳香族二胺、氨基苯酚和氨基芳香族酸残基(A)的残基,其中至少 40 摩尔%的残基(A)具有同轴或平行且方向相反的链延伸键,以及足够的选自以下至少一种的非线性残基(B):
和
使聚合物与不含上述残基(B)的类似聚合物相比,在高温下具有更好的硬度保持性。