Production of aromatic polyketones
US4396755A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1982 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Apr 12, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Production of an aromatic polyketone by reacting in the presence of a quinquevalent phosphorous halide (preferably PCl.sub.5) and a fluoroalkane sulphonic acid (preferably CF.sub.3 SO.sub.2 OH) the reactants selected from: (a) a mixture of (i) at least one aromatic dicarboxylic acid HO.sub.2 C--Ar--CO.sub.2 H where --Ar'-- is a divalent aromatic radical and CO.sub.2 H is an aromatically bound carboxylic acid group, which dicarboxylic acid is polymerizable with the at least one aromatic compound of (ii), and (ii) at least one aromatic compound H--Ar'--H where --Ar'-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom, which compound is polymerizable with the at least one dicarboxylic acid of (i); (b) at least one aromatic monocarboxylic acid H--Ar"--CO.sub.2 H where --Ar"-- is a divalent aromatic radical and H and CO.sub.2 H are as defined in (a), which monocarboxylic acid is self-polymerizable; and (c) a combination of (a) and (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.