Production of thermally stabilized polyester with alkylene carbonates and sodium or potassium thiocyanate
US4348314A · kind A · utility
13Cited by
11References
9Claims
0Family size
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Key dates
| Filing date | Jun 2, 1980 |
| Grant date | Sep 7, 1982 |
| Priority date | — |
| Expiry date | Jun 2, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/916
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High molecular weight linear condensation polyesters are stabilized against deterioration by heat by reacting the polyester in molten form with alkylene carbonates in the presence of a catalytic amount of a compound selected from the group consisting of sodium thiocyanate and potassium thiocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.