Process for recovering coating materials
Abstract
Abstract A PROCESS FOR DEACTIVATING OR "KILLING" THE OVERSPRAY PARTICLES OF A PAINT OR SIMILAR COATING MATERIAL WHICH COMPRISE CONTACTING THE MATERIAL WITH AN AQUEOUS ALKALINE SOLUTION WHICH CONTAINS AN ORGANIC NITROGEN COMPOUND OF THE FORMULA: R1-N(-R2)-R3 WHEREIN R1, R2 AND R3 ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKANOL AND HYDROXY ETHER GROUPS, WHICH LATTER GROUPS CONTAINS FROM ABOUT 2 TO 10 CARBON ATOMS, AT LEAST ONE OF R1, R2 AND R3 BEING OTHER THAN HYDROGEN, THE ORGANIC NITROGEN COMPOUND HAVING A BOILING POINT OF AT LEAST ABOUT 100 DEGREES C. AND A MOLECULAR WEIGHT WHICH IS NOT SUBSTANTIALLY IN EXCESS OF ABOUT 500. PREFERABLY, THE ALKALINE SOLUTION IS AN AQUEOUS SOLUTION OF SODIUM HYDROXIDE AND/OR SODIUM SILICATE AND THE PREFERRED ORGANIC NITROGEN COMPOUND IS TRIETHANOL AMINE.
Inventors
- 👤 G Tupper
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |