Surfactant mixtures for flexible polyester urethane foams
Abstract
Abstract THIS INVENTION RELATES TO THE USE OF NOVEL COMBINATIONS OF FOAM STABLIZING SURFACTANTS IN THE PRODUCTION OF FLEXIBLE POLYESTER URETHANE FOAMS. THE NOVEL FOAM STABILIZER COMBINATIONS CONSIST OF (A) AN ANIONIC ORGANIC SURFACTANT THAT IS SOLUBLE IN THE POLYESTER REACTANT AT ROOM TEMPERATURE AND THAT IS CAPABLE OF LOWERING THE SURFACE TENSION OF THE POLYESTER RESIN REACTANT WHEN DISSOLVED THEREIN AND, (B) A SILOXANE-POLYOXYALKYLENE BLOCK COPOLYMER SURFACTANT THAT HAS A CRITICAL MOLECULAR WEIGHT, SILOXANE CONTENT AND OXYETHYLENE CONTENT. THE NOVEL SURFACTANT COMBINATIONS ALLOW FOR THE PRODUCTION OF FLEXIBLE POLYESTER URETHANE FOAMS HAVING FINE, UNIFORM CELL STRUCTURE, LOW COMPRESSION SET AND FREEDOM FROM LARGE VOIDS AND SPLITS.
Inventors
- 👤 Lawrence Marlin
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |