Recovery method for polyester still bottoms
US4013519A · kind A · utility
9Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1976 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Mar 25, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/09
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A recovery method by means of which an antimony compound is separated from polyester still bottoms. If desired, the method can be employed so as to recover in usable form, the antimony compound, and the monomers polymerized to produce the polyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.