Patent US3363033A successfully refreshed from Google Patents.
US3363033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transesterification of phosphates
Assignee: Celanese Corp
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Filing: 1965-03-04
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Granted: 1968-01-09
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Enrique R Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:04
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE PROCESS OF PRODUCING HIGH MOLECULAR WEIGHT ARYL PHOSPHATES WHICH COMPRISES TRANSESTERIFYING A TRIARYL PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF TRICRESYL PHOSPHATE, TRIPHENYL PHOSPHATE AND TRIXYLENO PHOSPHATE WITH A PHENOL SELECTED FROM THE GROUP CONSISTING OF O-TERTBUTYL PHENOL, P-TERT-BUTYL PHENOL, 2,6-DIISOPROPYL PHENOL, O-DIMETHYLAMINOMETHYL PHENOL, BIS (P-PHENOL) ISOPROPANE, BIS (O-ISOPROPYL P-PHENOL) ISOPROPANE, BIS (O-METHYL O-TERT-BUTYL P-PHENOL) METHANE, BIS (O-METHYL O-TERTBUTYL P-PHENOL SULFIDE, BIS (O-TERT-BUTYL P-METHYL O-PHENOL) METHANE, 1,1,5,5-TETRA (PHENOL) PENTANE, AT A TEMPERATURE OF FROM 100*C. TO 200*C. AND A PRESSURE OF FROM 10 MM. HG TO 200 MM. HG, IN THE PRESENCE OF A SODIUM METAL CATALYST.
Claim 2
Dependent Claim
98 words
THE PROCESS OF PRODUCING HIGH MOLECULAR WEIGHT ARYL PHOSPHATES WHICH COMPRISES TRANSESTERIFYING A TRIARYL PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF TRICRESYL PHOSPHATE, TRIPHENYL PHOSPHATE AND TRIXYLENO PHOSPHATE WITH A PHENOL SELECTED FROM THE GROUP CONSISTING OF O-TERTBUTYL PHENOL, P-TERT-BUTYL PHENOL, 2,6-DIISOPROPYL PHENOL, O-DIMETHYLAMINOMETHYL PHENOL, BIS (P-PHENOL) ISOPROPANE, BIS (O-ISOPROPYL P-PHENOL) ISOPROPANE, BIS (O-METHYL O-TERT-BUTYL P-PHENOL) METHANE, BIS (O-METHYL O-TERTBUTYL P-PHENOL SULFIDE, BIS (O-TERT-BUTYL P-METHYL O-PHENOL) METHANE, 1,1,5,5-TETRA (PHENOL) PENTANE, AT A TEMPERATURE OF FROM 100*C. TO 200*C. AND A PRESSURE OF FROM 10 MM. HG TO 200 MM. HG, IN THE PRESENCE OF A SODIUM METAL CATALYST.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |