Thermosetting resins prepared from dimaleimides and isocyanuric acid or derivative thereof
Abstract
Abstract A HEAT-RESISTANT THERMOSETTING RESIN COMPOSITION IS FORMED BY MIXING AND HEATING (A) 85 TO 55% BY MOL OF N,N''-SUBSTITUTED DIMALEIMIDE REPRESENTED BY THE FOLLOWING GENERAL FORMULA: (2,5-DI(O=)-3-PYRROLIN-1-YL)2-R WHERE R IS (4-(C6H5-CH2-)PHENYL)-, (4-(CL-C6H4-CH2-),CL-PHENYL)-, PHENYLENE, -(1,4-PHENYLENE)-S-S-(1,4-PHENYLENE)-, OR -(CH2)N- N IS AN INTEGER OF FROM 1 TO 6; WITH (B) 15 TO 45% BY MOL OF AN ISOCYANURIC ACID AND/OR DERIVATIVE THEREOF REPRESENTED BY THE FOLLOWING GENERAL FORMULA: 2,4,6-TRI(O=),1-R''-PERHYDRO-S-TRIAZINE WHERE R'' IS H OR A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL, AND ALLYL. THIS RESIN COMPOSITION IS CHARACTERIZED BY EXCELLENT HEAT RESISTANCE, RESISTANCE TO CRACKING INDUCED BY HEAT-CYCLING, EXCELLENT MECHANICAL STRENGTH AND GOOD BONDING PROPERTIES.
Inventors
- 👤 K Akiyama
- 👤 K Makino
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |