Compositions with a simultaneous lubricating and phosphatising action for the surface treatment of steels for the purpose of cold forming operations,and preparation and use of such compositions
Abstract
Abstract A LUBRICATING AND PHOSPHATISING COMPOSITION, OF PH LESS THAN 2 AND WHICH IS LIQUID AT TEMPERATURES BELOW 80*C., CONTAINS BY WEIGHT (A) 30-70% OF A PHOSPHATE OF AN AMIDE DERIVED FROM A C14-C24 UNSATURATED FATTY ACID AND AN AMINE H(NHCH2CH2)NNH2 WHERE N=2-6, (B) 15-55% OF A HYDROCARBON, NON-DRYING GLYCERIDE OR ESTER OF A C14-C18 FATTY ACID AND AN ALKANOL OF LESS THAN 10 CARBONS, (C) 3-10% WATER, (D) 2-7% FREE PHOSPHORIC ACID, (E) 8-15* HEXYLENE GLYCOL OR A PHOSPHATE OF METHYLFORMAMIDE, DIMETHYLFORMAMIDE OR DIMETHYLACETAMIDE AND OPTIONALLY (F) UP TO 5% OF A SURFACTANT. THE COMPOSITION IS PREPARED BY FIRST FORMING COMPONENT (A), MIXING IT WITH COMPONENTS (B), (E) AND (F) AND FINALLY INCORPORATING COMPONENTS (C) AND (D).
Inventors
- 👤 J Dubourg
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |