Synthetic insulating paper for electric insulation
Abstract
Abstract ASYNTHETIC INSULATING PAPER FOR USE IN ELECTRICAL INSULATION UPON IMPREGNATION WITH AN INSULATING FLUID, SAID PAPER COMPRISING A SHEET CONSISTING OF A FIBROUS SUBSTRATE AND MATRIX POLYMER UNIFORMLY DISTRIBUTED THEREIN, SAID SHEET BEING PREPARED BY IMPREGNATING A POROUS, FIBROUS WEB OR SHEET MATERIAL WITH A SOLUTION OF AHIGH-MOLECULAR-WEIGHT ORGANIC POLYMER AT A RATE SUCH THAT THE AMOUNT OF SAID HIGH-MOLECULAR-WEIGHT ORGANIC POLYMER IS 5 TO 70% BY WEIGHT BASED ON SAID WEB OR SHEET MATERIAL, PRECIPITATING AND COAGULATING SAID ORGANIC POLYMER THREE-DIMENSIONALLY ON SAID WEB OR SHEET AND THEREAFTER SUBJECT ING THE TREATED WEB OR SHEET TO CALENDERING UNDER PRESSURE, SAID SHEET HAVING UNIFORM FINE VOIDS WITH A VOID RATIO IN THE RANGE OF 10 TO 70%.
Inventors
- 👤 S Isshiki
- 👤 S Nakayama
- 👤 K Nakayama
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |