Process for the production of aromatic polyester carbonates in the absence of tertiary amines
US4585596A · kind A · utility
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4Claims
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Key dates
| Filing date | Sep 6, 1984 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Sep 6, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/64
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Bis-chlorocarbonic acid esters of diphenols react with aromatic dicarboxylic acids in the melt or in high-boiling, inert organic solvents, even in the absence of bases, such as tertiary amines for example, to form polyester carbonates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.