Silyl-substituted carbamic acid derivatives
Abstract
Abstract New organosilyl-modified carbamic acid esters have the formula IN WHICH R, R'' and R'''''' are monovalent hydrocarbon radicals, R'''' is a hydrogen atom a methyl radical or a phenyl radical, Q is a monovalent to hexavalent hydrocarbon radical having up to 6 carbon atoms, a is 0, 1, 2 or 3, n is 2, 3 or 4, b is zero or an integer from 1 to 200, and c is the valency number of Q. These carbamic acid derivates are prepared by reacting at a temperature of from 20* to 150* C., an aminomethyl-silane derivative of the formula WITH A CHLOROFORMIC ACID ESTER OF THE FORMULA IN THE PRESENCE OF A TERTIARY AMINE. The products are to be used as priming agents imparting adhesion to synthetic resins on siliceous surfaces, as surfactants and as intermediates for organo-polysiloxane resins.
Inventors
- 👤 Hans Dietrich Golitz
- 👤 Walter Simmler
Bibliographic Details
Claims Analysis
Total Claims: 5References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |