| 摘要 |
Polyvinyl acetals with unsaturated acetal units are obtained by means of acetalization of partly hydrolysed or fully hydrolysed vinyl ester polymers having >50 mol % of vinyl alcohol units with one or more saturated, aliphatic aldehydes and one or more unsaturated, acyclic aliphatic aldehydes, the aldehydes optionally used in the form of their hemiacetals or full acetals. |
