Polymers comprising carbonyl groups in their backbone, such as polyesters and polyimides, which have been modified by compounds having ketonic groups in their backbone, and molecular weights in the region of 300 to under 1,000. Preferably, these compounds have also ether groups in their backbone.
骨架中含有羰基的聚合物,如聚酯和聚
酰亚胺,它们已被骨架中含有酮基的化合物改性,分子量在 300 到 1,000 之间。这些化合物的骨架中最好还含有醚基。