Protective coating and lubricant
Abstract
Abstract AN AIR-DRYING COMPOSITION FOR USE AS A PROTECTIVE AND/ OR DECORATIVE COATING AND SOLID FILM LUBRICANT FOR STEEL AND OTHER SURFACES. THE COMPOSITION CONSISTS OF A COMBINATION OF LOW AND HIGH MOLECULAR WEIGHT POLYEPOXIDES IN SUCH PROPORTIONS THAT WHEN MIXED WITH POLYMERIZING CATALYSTS AND WITH SOLID LUBRICANT SUCH AS MOLYBDENUM DISULFIDE AND CORROSION INHIBITORS SUCH AS ANTIMONY TRIOXIDE AND DIBASIC LEAD PHOSPHITE, THE COMPOSITION REMAINS STABLE FOR LONG PERIODS. WHEN THE POLYEPOXIDES ARE DISSOLVED IN A SOLVENT COMPOSED OF A MAJOR PORTION OF METHYLENE CHLORIDE AND MINOR AMOUNTS OF LOW MOLECULAR WEIGHT ALCOHOL, LOW MOLECULAR WEIGHT KETONE, AND A GLYCOL ETHER USING A MIXTURE OF FREON AND NITROUS OXIDE AS PROPELLANT, THE COATING CAN BE PACKAGED AS AN AERSOL PRODUCT WHICH IS NOT ONLY STABLE BUT WHICH CAN BE SPRAYED ONTO A SURFACE TO PRODUCE A SMOOTH, HARD COATING THAT DRIES WITHIN A FEW MINUTES. THE RESULTING CURED EPOXY RESIN PRODUCT HAS EXCELLENT PROTECTIVE AND LUBRICATING PROPERTIES AND CAN BE COLORED TO PRODUCE DECORATIVE COATINGS.
Inventors
- 👤 Robert V Sandstrom
Bibliographic Details
Claims Analysis
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |