Process for obtaining glycols and glycerine or di- and triesters thereof from polyglycols and polyglycerine
US4087453A · kind A · utility
1Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1976 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Jun 18, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/095
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for recovering monomeric glycols and glycerine from polyoxyalkylene glycols and polyglycerines which comprises heating the polymeric compounds together with a lower saturated mono-carboxylic acid, containing from 2 to 4 carbon atoms such as acetic acid, in the presence of a strong acid, e.g. sulfuric acid, or a strong acid cation exchange resin. The product, which is the diester of the monomeric glycol or the triester of glycerine, is recovered and subsequently hydrolyzed to obtain the desired monoglycol or glycerine product. If it is desired to obtain the ester itself, the latter step of hydrolyzing can be omitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.