Reducing color formers in 1,4-butanediol
US4213000A · kind A · utility
18Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1979 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | May 29, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/90
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,4-Butynediol is catalytically hydrogenated under conventional conditions to produce a reaction product containing 1,4-butanediol. This reaction product is then hydrogenated under acid conditions, i.e., pH 1-6 and temperatures of 120.degree.-150.degree. C., to produce a 1,4-butanediol product. Upon further separation, the 1,4-butanediol is practically free from compounds that would produce color when the diol is used to make polyesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.