High density information record made of a conductive resin composition comprising a specific type of dimethylpolysiloxane
US4547545A · kind A · utility
3Cited by
1References
4Claims
0Family size
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Inventors
Key dates
| Filing date | Apr 13, 1984 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Apr 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A high density information record of the electrostatic capacitance type which comprises a record substrate on which signal information is recorded as geometric variations. The substrate is made of a conductive resin composition comprising a thermoplastic resin, a conductive material, and a defined amount of a specific type of dimethylpolysiloxane lubricant having a degree of inhomogeneity of 1.0 to 1.3 and a degree of polymerization of 12 to 60.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.