Process for preparing color-stable tertiary butyldiethanolamine
US5424482A · kind A · utility
3Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1991 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Aug 8, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C213/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tertiary-butyldiethanolamine subject to color deterioration is purified and stabilized against color formation by vacuum distilling said amine at a pressure within the range of 1 to 50 mm.Hg (1-50 torr) in the absence of a reducing agent,
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.