US2970985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing catalysts for acrolein pentaerythritol resins
Assignee: Union Carbide Corp
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Filing: 1956-12-24
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Granted: 1961-02-07
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Expires: 1976-12-24
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
2026-10-23 11:57
CPC Classifications
C; C08; C08G; C08G4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
PROCESS FOR FORMING SYNETHETIC RESINS WHICH COMPRISES REACTING ACROLEIN AND PENTAERYTHRITOL IN THE MOLAR RATIO OF ABOUT FOUR TO THREE AND IN THE PRESENCE OF AN ACIDIC CATALYST TO FORM A LIQUID RESIN, SAID ACIDIC CATALYST BEING SELECETED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SULFURIC ACID, TOLUENESULFONIC ACID, BENZENESULFONIC ACIDS, MIXED ALKANESULFONIC ACIDS, ALUMINUM CHLORIDE, TITANIUM TETRACHLORIDE, STANNIC CHLORIDE AND ZINC CHLORIDE, AND CURING THE LIQUID RESIN TO A SOLID POLYMER BY HEATING THE LIQUID RESIN AT A TEMPERATURE OF 70* C. TO 160* C. ADMIXED WITH FROM 0.05 TO 2% BY WEIGHT OF A FULLY ESTERIFILED SULFATE ESTER OF ALCOHOL.
Claim 2
Dependent Claim
102 words
PROCESS FOR FORMING SYNETHETIC RESINS WHICH COMPRISES REACTING ACROLEIN AND PENTAERYTHRITOL IN THE MOLAR RATIO OF ABOUT FOUR TO THREE AND IN THE PRESENCE OF AN ACIDIC CATALYST TO FORM A LIQUID RESIN, SAID ACIDIC CATALYST BEING SELECETED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SULFURIC ACID, TOLUENESULFONIC ACID, BENZENESULFONIC ACIDS, MIXED ALKANESULFONIC ACIDS, ALUMINUM CHLORIDE, TITANIUM TETRACHLORIDE, STANNIC CHLORIDE AND ZINC CHLORIDE, AND CURING THE LIQUID RESIN TO A SOLID POLYMER BY HEATING THE LIQUID RESIN AT A TEMPERATURE OF 70* C. TO 160* C. ADMIXED WITH FROM 0.05 TO 2% BY WEIGHT OF A FULLY ESTERIFILED SULFATE ESTER OF ALCOHOL.
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |