| 摘要 |
A component comprising a first part and a second part, wherein a third part is positioned between the first and second parts, wherein: (i) said first part comprises a polymeric material (A) which comprises a repeat unit of formula (XI) wherein t1, and w1 independently represent 0 or 1 and vl represents 0, 1 or 2; (ii) said second part comprises a polymeric material (B) which comprises a wherein t1, and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2; and (iii) said third part comprises a polymeric material (C) which comprises a polymer having a repeat unit of formula -O-Ph-O-Ph-CO-Ph- (I) and a repeat unit of formula -O-Ph-Ph-O-Ph-CO-Ph- (II) wherein Ph represents a phenylene moiety. In a second embodiment the first and second layers can comprise the polymer of the third layer, i.e. a copolymer of (I) and (II) |
