Thermally stabilized polyester-polyether block copolymer composition
US4013618A · kind A · utility
2Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1974 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Dec 31, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester-polyether block copolymer composition being very stable even in the presence of heavy metals, which comprises a polyester-polyether block copolymer consisting of segments of polyester units and segments of polyether units; at least one compound containing the group of the following formula: ##STR1## wherein X is oxygen or sulfur, R.sub.1, R.sub.2 and R.sub.3 are each hydrogen or an organic residue, or R.sub.2 and R.sub.3 forms a Schiff's base with the adjacent nitrogen, and R.sub.4 and R.sub.5 are each hydrogen or an organic residue; at least one radical scavenger and/or at least one peroxide decomposer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.