| 摘要 |
1291938 Purification of trimethylolpropane KOEI CHEMICAL CO Ltd 26 Nov 1970 [28 Nov 1969] 56239/70 Heading C2C Trimethylolpropane, prepared by reacting formaldehyde and n-butyraldehyde, in an aqueous medium, in the presence of a basic catalyst, is isolated by steam distillation using superheated steam, under reduced pressure. |
