Electrically-conductive resin compositions and moldings
US7338623B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Feb 7, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L27/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An electrically-conductive resin composition comprises (A) a thermoplastic resin and (B) an electrically-conductive polymer blended together. The electrically-conductive polymer is an electrically-conductive polyester doped with a dissociable inorganic salt. The doped polyester is at least one polyester selected from the group consisting of (a) polyesters each of which has a weight average molecular weight of from 50,000 to 500,000 and has been obtained by subjecting at least caprolactone as a monomer to ring-opening polymerization and (b) comb polyesters each of which has one or more polyester chains each having a weight average molecular weight of from 50,000 to 200,000 and has been obtained by subjecting a lactone to ring-opening polymerization in the presence of a trifunctional or higher functional, polyhydric alcohol as a polymerization initiator. Electrically-conductive resin moldings made of such electrically-conductive resin compositions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.