Difunctionalized polyarylene polyethers and process for preparation thereof
US4701514A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/48
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Oligomers of polyarylene polyethethers (PAPE) having a mol wt Mn in the range from 1000 to about 10,000 are converted to difunctionalized oligomers so as, in the first instance, to provide a reactive double bond (for example, a vinylbenzyl group) at each end of the PAPE; and, in the second instance, to provide a triple bond (benzylethynyl group) at each end of the PAPE. The PAPE most preferably has a repeating unit which is the residuum of two dihydric phenols or thiophenols ("DHP") linked through a C=O, --S--S--, or --SO.sub.2 -group, or a Si or C atom, and or ether O, or thioether S atoms. The preferred repeating unit is formed by reaction of a DHP such as bisphenol A (BPA) with a halogenated DHP such as dichlorophenyl sulfone (DCPS) so as to provide an alternating configuration. The repeating unit may also include a linking residue of a reactive solvent which residue provides chain extension in the backbone. An oligomer which is a homopolymer having a repeating unit in which at least four benzenoid rings are connected through ether O atoms, may also be difunctionalized. In particular, .alpha.,.omega.-di(phenol)aromatic polyether sulfone oligomers ("APS") are esterified so as to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.