US3342620A
Expired / Lapsed
US
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Plastic sulphur composition
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1964-05-04
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Granted: 1967-09-19
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Molinet Georges
- 👤 Audouze Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:59
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C04; C04B; C04B28/00; C04B28/36; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
A PROCESS OF PREPARING A PLASTIC COMPOSITION COMPRISING ELEMENTAL SULFUR AND AN ORGANIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF POLYTHIOFORMALDEHYDE OF FORMULA HS(CH2S)NH WHICH CONTAINS 62 TO 76% BY WEIGHT OF COMBINED SULPHUR WHEREIN THE AVERAGE VALUE OF N RANGES FROM 3 TO 7, AND A CONDENSATION PRODUCT OF SAID POLYTHIOFORMALDEHYDE WITH AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF A KETONE HAVING 2 TO 12 CARBON ATOMS IN ITS MOLECULE BESIDE THE CARBON OF THE KETONIC CO GROUP, PHENOL, UREA, THIOUREA, DICYANDIAMIDE, STYRENE AND MALEIC ACID, SAID PROCESS COMPRISING THE STEPS OF TREATING AND HOMOGENIZING AT A TEMPERATURE RANGING FROM 145* TO 170*C. 85 TO 98 PARTS BY WEIGHT OF ELEMENTAL SULFUR WITH 15 TO 2 PARTS BY WEIGHT OF SAID ORGANIC SUBSTANCE IN ORDER TO OBTAIN A HOMOGENEOUS MELT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |