| 摘要 |
<p>A silicon-containing copolymer which comprises units represented by the formulae (I) and (II) as essential units and ones represented by the formulae (III) to (VII) as optional units and has a number-average molecular weight of 500 to 1,000,000. (I) (II) (III) (IV) (V) (VI) (VII) (In the formulae, A is NH or oxygen, the proportions of these satisfying the relationship 0.01 ≤ Si-O / (Si - N + Si-O) ≤ 0.99.)</p> |
