US2695834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reacting unsaturated compounds with inorganic acid compounds and products resulting therefrom
Assignee: Shell Development Co
•
Filing: 1948-03-15
•
Granted: 1954-11-30
•
Expires: 1968-03-15
Abstract
No abstract record available.
Inventors
- 👤 Nie Willem Leendert Johanne De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:54
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/20; D; D01; D01F; D01F6/00; D01F6/02; D01F6/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A SYNTHETIC FILAMENT CHARACTERIZED BY AN UNUSALLY GOOD ACCEPTANCE OF DYESTUFFS, WHICH FILAMENT IS PRODUCED BY SPINNING A LIQUID CONTAINING (1) A HYDROPEROXIDE, (2) A RUBBERY POLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE CONJUGATED DIOLEFINS AND CHLOROPRENE, AND (3) A QUANTITY OF AT LEAST 10%, BASED ON THE WEIGHT OF RUBBERY POLYMER PRESENT, OF A COMPOUND OF LOW MOLECULAR WEIGHT (BELOW 5,000) WHICH CONTAINS AN OLEFINIC DOUBLE BOND BETWEEN AT LEAST ONE PAIR OF ADJACENT CARBON ATOMS, INTO A COAGULATING BATH CONTAINING AVAILABLE SULFUR DIOXIDE WHEREIN THE RUBBERY POLYMER AND THE LOW MOLECULAR WEIGHT COMPOUND REACT WITH THE SULFUR DIOXIDE TO FORM AN INSOLUBLE FILAMENTARY PRODUCT WHICH IS THEN WITHDRAWN FROM THE COAGULATING BATH.
Claim 2
Dependent Claim
118 words
A SYNTHETIC FILAMENT CHARACTERIZED BY AN UNUSALLY GOOD ACCEPTANCE OF DYESTUFFS, WHICH FILAMENT IS PRODUCED BY SPINNING A LIQUID CONTAINING (1) A HYDROPEROXIDE, (2) A RUBBERY POLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE CONJUGATED DIOLEFINS AND CHLOROPRENE, AND (3) A QUANTITY OF AT LEAST 10%, BASED ON THE WEIGHT OF RUBBERY POLYMER PRESENT, OF A COMPOUND OF LOW MOLECULAR WEIGHT (BELOW 5,000) WHICH CONTAINS AN OLEFINIC DOUBLE BOND BETWEEN AT LEAST ONE PAIR OF ADJACENT CARBON ATOMS, INTO A COAGULATING BATH CONTAINING AVAILABLE SULFUR DIOXIDE WHEREIN THE RUBBERY POLYMER AND THE LOW MOLECULAR WEIGHT COMPOUND REACT WITH THE SULFUR DIOXIDE TO FORM AN INSOLUBLE FILAMENTARY PRODUCT WHICH IS THEN WITHDRAWN FROM THE COAGULATING BATH.
References Cited (Backward Citations)
US1925879A
Cited
US2113584A
Cited
US2169363A
Cited
US2293023A
Cited
US2288982A
Cited
US2379354A
Cited
US2383055A
Cited
US2469847A
Cited
US2422550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |