Polyacetylene production
US4496702A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1982 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Nov 16, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2349/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to coherent poly(acetylene) films and to a method of producing such polyacetylenes. The process comprises solvent casting a solution of a polymer of the general formula (V) derived from a precursor (IV), and transforming the pre-cast, polymer (V) into a poly(acetylene) (III) film and a by-product (VI) at a temperature between 20.degree. and 200.degree. C. at reduced pressure. The poly(acetylene) thus formed has a substantially higher density than the poly(acetylene) polymers produced hitherto. The morphology of the poly(acetylene) produced is that of a thin, coherent solid film with no voids and, no basic structural units are visible even at a magnification of 10,000 times. The polymers also have a lower crystallinity than those produced by conventional methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.