| 摘要 |
A linear polymer (I), in which at least 80% of the units contain pendant oxycarbonyl or amidocarbonyl gps., is crosslinked in the solid state by means of hydroxyl or amino gps. to give a solid insol. polymer which is swollen only sligfhtly by solvents for the uncrosslinked (I). The hydroxyl or amino gps. are present as gps. pendant from the polymer, or as low mol. wt. polyols (IIa) or polyamines (IIb); or OH may be supplied by an epoxy cpd.. Opt. crosslinking may be catalysed by a strongly acidic moiety which may be present as a gp. in (I) or independent of it.
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