Process for the preparation of polyvinyl acetals and ketals
摘要
A process for the production of polyvinyl acetals or ketals (I) comprises reacting polyvinyl alcohol (PVAL) with an aldehyde or ketone (II) in presence of a catalyst (III) containing acid groups which are chemically bonded to a 2-dimensional support which is insoluble in the reaction medium.
申请公布号
EP0805167(A2)
申请公布日期
1997.11.05
申请号
EP19970107020
申请日期
1997.04.28
申请人
HOECHST AKTIENGESELLSCHAFT
发明人
FUSS, ROBERT, W., DR.;GUTWEILER, MATTHIAS, DR.;BAUMGARTNER, MARTIN, DR.
