Process for the manufacture of a product of polyurethane foam reinforced by fibres
Abstract
Abstract IN A PROCESS FOR THE MANUFACTURE OF A FLAT POLYURETHANE FOAM REINFORCED BY FIBERS, WHEREIN THE FIBERS AND A REACTION MIXTURE COMPRISING AT LEAST ONE ORGANIC POLYOL AND ONE ORGANIC POLYISOCYANATE ARE MIXED AND REACTED IN THE PRESENCE OF A SUBSTANCE CAPABLE OF LIBERATING WATER UNDER THE INFLUENCE OF HEAT IN A SUFFICIENT AMOUNT TO PERMIT THE A TEMPERATURE BETWEEN THE TEMPERATURE AT WHICH WATER OF HYDRATION IS LIBERATED AND THE TEMPERATURE CORRESPONDING TO THE LIMIT OF STABILITY OF THE POLYURETHANE FORMED CHARACTERIZED IN THAT BORAX IS THE SUBSTANCE CAPABLE OF LIBERATING WATER, THE IMPROVEMENT WHEREIN THE MIXING AND REACTION OCCURS IN TTHE PRESENCE OF A WATER FIXING AMOUNT OF AN INERT HYGROSCOPIC INORGANIC SUBSTANCE CAPABLE OF FIXING ANY WATER LIBERATED BY THE BORAX WHILE DISSOLVED IN THE REACTION MIXTURE UNTIL THE TEMPERATURE OF SAID MIXTURE IS RAISED ABOVE THE TEMPERATURE AT WHICH WATER OF HYDRATION IS LIBERATED FROM THE BORAX.
Inventors
- 👤 Jean Paul Carriere
- 👤 Alexis Archipoff
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |