发明名称 |
Process for the preparation of trimethylolalkanes |
摘要 |
An improved process for the preparation of a trimethylolalkane of the formula <IMAGE> (I) wherein R1 denotes an aliphatic radical by reacting formaldehyde with an aldehyde of the formula <IMAGE> (II) wherein R1 has the meaning indicated above and thereafter hydrogenating the resultant 2,2-dimethylolalkanal, the improvement residing in employing formaldehyde in a molar ratio of at least 8:1 to the aldehyde reactant, carrying out the aldehyde-formaldehyde reaction in the presence of an aldol condensation base at a temperature between -20 and 5 DEG C, optionally in the presence of an ion of an element of group VII and/or VIII and/or sub-group I or II of the periodic system.
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申请公布号 |
US4122290(A) |
申请公布日期 |
1978.10.24 |
申请号 |
US19770861472 |
申请日期 |
1977.12.16 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
IMMEL, OTTO;SCHWARZ, HANS-HELMUT;WEISSEL, OSKAR;KRIMM, HEINRICH |
分类号 |
B01J31/00;C07B61/00;C07C27/00;C07C29/14;C07C29/141;C07C29/38;C07C31/22;C07C45/75;C07C67/00;(IPC1-7):C07C29/14 |
主分类号 |
B01J31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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