| 摘要 |
An assembly or apparatus for use in relation to an assembly, wherein said assembly is subjected to a temperature of less than -50°C in use, wherein said assembly or apparatus includes a component which comprises a polymeric material (A) having a repeat unit of formula -O-Ph-O-Ph-CO-Ph- (I) wherein Ph represents a phenylene moiety; and wherein said polymeric material (A) has a melt viscosity of at least 0.50 kNsm-2 . |
