US2631138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing resin-forming compositions with sulfonic acids
Assignee: Shell Development Co
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Filing: 1951-02-26
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Granted: 1953-03-10
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Expires: 1971-02-26
Abstract
No abstract record available.
Inventors
- 👤 Dannenberg Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:49
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G59/18; C08G59/40; C08G59/4007; C08G59/4064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS OF PREPARING RESINOUS PRODUCTS WHICH COMPRISES CURING A MIXTURE OF GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0 AND A CONVERTIBLE ALKYLATED UREA-FORMALDEHYDE CONDENSATE IN THE PRESENCE OF A SUBSTITUTED HYDROCARBON CONTAINING AS THE SOLE SUBSTITUENT GROUP FORM 1 TO 3 SINGLE MEMBERS OF THE CLASS CONSISTING OF SULFONIC ACID AND SULFONYL HALIDE GROUPS.
Claim 2
Dependent Claim
61 words
A PROCESS OF PREPARING RESINOUS PRODUCTS WHICH COMPRISES CURING A MIXTURE OF GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0 AND A CONVERTIBLE ALKYLATED UREA-FORMALDEHYDE CONDENSATE IN THE PRESENCE OF A SUBSTITUTED HYDROCARBON CONTAINING AS THE SOLE SUBSTITUENT GROUP FORM 1 TO 3 SINGLE MEMBERS OF THE CLASS CONSISTING OF SULFONIC ACID AND SULFONYL HALIDE GROUPS.
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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |