Wire covering material composition, an insulated wire and a wiring harness
US7868253B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 22, 2007 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Feb 14, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/523
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wire covering material composition which is systematically different from a polyolefin resin composition and which possesses favorable flame retardancy, tensile elongation and wear resistance, having 100 parts by weight of a polymer blend containing 40-95 wt % of polybutylene terephthalate, and 1 to 30 parts by weight of a phosphoric ester compound with respect to 100 parts by weight of the polymer blend, wherein 5 to 100 wt % of the total content of the polybutylene terephthalate in the polymer blend is made up of polybutylene terephthalate, whose molecular weight distribution Mw/Mn (where Mw: weight-average molecular weight; Mn: number-average molecular weight) is greater than or equal to 2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.