Method of producing diol or triol
US9018424B2 · kind B2 · utility
3Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2011 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/76
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for producing a diol or triol, which has a step of removing impurities contained in a diol- or triol-containing solution, is provided. In the method, a diol- or triol-containing solution is filtered through a nanofiltration membrane having a polyamide-containing functional layer. The diol- or triol-containing solution is then collected from the permeate flow of the nanofiltration membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.