Electroconductive silicone composition
US5164443A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Apr 22, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an electroconductive silicone composition, which contains an acetylene black having an HCl-absorption of 12 ml/5 g or less and an I-adsorption of 50 mg/g or less and which has improved workability. The composition may further contain a magnesium carbonate, a silicone oil and/or a carbon black having a mean grain size of 200 m.mu. or more and a specific surface area of 15 m.sup.2 /g or less. The it composition has improved reproducibility and temperature-dependent stability with respect to the electroconductivity as well as improved fire-resistance. Also disclosed is a silicone ink comprising (A) an addition-curable polyorganosiloxane, (B) a carbon black having an I-adsorption of 50 mg/g or less, a mean grain size of 35 m.mu. or more and a DBP adsorption of 150 ml/100 g or more, and (C) a solvent. The ink has improved storage stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.