Producing method for trimethylolalkane
US6034284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Oct 20, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
High quality trimethylolalkane can be easily and efficiently produced at a high yield through a reaction between n-alkanal and formaldehyde in the presence of tertiary amine and water, in which a reaction mixture obtained after the reaction is heated up to a temperature at which a salt of tertiary amine with formic acid produced as a by-product can be thermally dissociated so as to distill tertiary amine and water from the reaction mixture, and a formate of trimethylolalkane produced in the distillation of tertiary amine and contained in a residue is reacted with water, ammonia, primary amine or secondary amine; and the tertiary amine distilled from the reaction mixture is reused in producing trimethylolalkane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.