Process for the preparation of 2,2-dimethylolalkanals,申请号US19790022009-传众专利搜索

Process for the preparation of 2,2-dimethylolalkanals

申请公布号：US4247485(A)

申请号：US19790022009

申请日期：1979.03.19

申请公布日期：1981.01.27

申请人：

BAYER AKTIENGESELLSCHAFT

发明人：IMMEL, OTTO;SCHWARZ, HANS-HELMUT;QUAST, HEIN

分类号：C07C47/19;B01J23/00;B01J27/00;B01J31/00;C07B61/00;C07C45/00;C07C45/75;C07C67/00;(IPC1-7):C07C47/19

主分类号：C07C47/19

摘要：A process for the preparation of 2,2-dimethylolalkanals is disclosed wherein formaldehyde is reacted with an aldehyde of the formula RCH2CHO (I) wherein R denotes a straight-chain or branched alkyl radical with up to 12 carbon atoms where the radical can be substituted by an alkyl or alkoxy group with 1 to 3 carbon atoms in each case wherein the molar ratio of aldehyde of formula I to formaldehyde is 1:8 to 20, the reaction being carried out at a temperature in the range of 5 DEG to 100 DEG C. in the presence of 0.01 to 0.5 mol (per mol of aldehyde of formula (I)) of a catalyst consisting essentially of a hydroxide or carbonate of an alkali metal or alkaline earth metal or an unbranched tertiary aliphatic amine.