US2909506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified acrolein-pentaerythritol resins
Assignee: Union Carbide Corp
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Filing: 1956-07-10
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Granted: 1959-10-20
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Expires: 1976-07-10
Abstract
No abstract record available.
Inventors
- 👤 Howard R Guest
- 👤 Joe T Adams
- 👤 Ben W Kiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:37
CPC Classifications
C; C08; C08G; C08G4/00; Y; Y10; Y10S; Y10S273/00; Y10S273/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
PROCESS OF MAKING A CURABLE COMPOSITION WHICH COMPRISES REACTING ACROLEIN AND PENTAERYTHRITOL IN THE PRESENCE OF AN ACID CATALYST WHEREIN FROM 1.3 TO 1.9 MOLES OF ACROLEIN ARE REACTED PER MOLE OF PENTAERYTHRITOL TO FORM A LIQUID CONDENSATE, STRIPPING OFF VOLATILES WHICH ARE DISTILLABLE FROM SAID CONDENSATE AT TEMPERATURES OF 71* C. TO 80*C. AND 3 MM. TO 7.5 MM. OF PRESSURE TO FORM A LIQUID RESIN, AND ADDING MONOMERIC ISOLATED 3,9-DIVINYLSPIROBI(M-DIOXANE) TO THE LIQUID RESIN IN AN AMOUNT OF 2% TO 25% OF THE TOTAL COMPOSITION TO FORM A CURABLE COMPOSITION.
Claim 2
Dependent Claim
92 words
PROCESS OF MAKING A CURABLE COMPOSITION WHICH COMPRISES REACTING ACROLEIN AND PENTAERYTHRITOL IN THE PRESENCE OF AN ACID CATALYST WHEREIN FROM 1.3 TO 1.9 MOLES OF ACROLEIN ARE REACTED PER MOLE OF PENTAERYTHRITOL TO FORM A LIQUID CONDENSATE, STRIPPING OFF VOLATILES WHICH ARE DISTILLABLE FROM SAID CONDENSATE AT TEMPERATURES OF 71* C. TO 80*C. AND 3 MM. TO 7.5 MM. OF PRESSURE TO FORM A LIQUID RESIN, AND ADDING MONOMERIC ISOLATED 3,9-DIVINYLSPIROBI(M-DIOXANE) TO THE LIQUID RESIN IN AN AMOUNT OF 2% TO 25% OF THE TOTAL COMPOSITION TO FORM A CURABLE COMPOSITION.
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |