Patent US2636017A successfully refreshed from Google Patents.
US2636017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bodied phenolic varnish and process
Assignee: Akzo Nobel Paints LLC
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Filing: 1946-11-29
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Granted: 1953-04-21
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Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 Schwartzberg Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:45
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/04; C09D161/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
THE METHOD OF PREPARING A COATING COMPOSITION WHICH COMPRISES THE STEPS OF: PROVIDING A POTENTIALLY HEAT-REACTIVE AND SUBSTANTIALLY DEHYDRATED SYRUP COMPOSED ESSENTIALLY OF SUBSTANTIALLY UMPOLYMERIZED POLYMETHYLOL COMPOUNDS OF PHENOLIC MATERIALS SELECTED FROM THE CLASS CONSISTING OF PHENOL, META CRESOL, 3,5 XYLENOL AND MIXTURES THEREOF, SAID POLYMETHYLOL COMPOUNDS HAVING A TOTAL COMBINED FORMALDEHYDE CONTENT OF BETWEEN ABOUT 2 1/4 AND 3 MOLS PER MOL OF PHENOLIC MATERIAL; ADDING A VOLATILE COMPATIBLE ORGANIC SOLVENT, AND AN ACID CATALYST TO SAID SYRUP TO ESTABLISH A PH OF 5 TO 6; AZETROPICALLY DISTILLING SOLVENT AND WATER FROM SAID MASS WHILE ADDING SUFFICIENT SOLVENT TO THE DISTILLING MASS TO MAINTAIN ITS VISCOSITY BELOW ABOUT Z, AND SO CONTINUING THE AZEO,TROPIC DISTILLATION AND SEPARATION OF WATER UNTIL THE MASS ATTAINS A VISCOSITY BETWEEN A AND D, INCLUSIVE, WHEN MEASURED THEREIN AT A NONVOLATILE-MATTER LEVEL OF BETWEEN 31. 6% AND 34.6%, INCLUSIVE, THEREBY CONVERTING SAID SYRUP INTO A BODIED, POTENTIALLY HEAT-REACTIVE FILM-FORMING MATERIAL; AND ADDING TO THE BODIED MATERIAL FROM 6% TO 10% BY WEIGHT THEREOF, OF AN ACID ACCELERATOR.
Claim 2
Independent Claim
173 words
THE METHOD OF PREPARING A COATING COMPOSITION WHICH COMPRISES THE STEPS OF: PROVIDING A POTENTIALLY HEAT-REACTIVE AND SUBSTANTIALLY DEHYDRATED SYRUP COMPOSED ESSENTIALLY OF SUBSTANTIALLY UMPOLYMERIZED POLYMETHYLOL COMPOUNDS OF PHENOLIC MATERIALS SELECTED FROM THE CLASS CONSISTING OF PHENOL, META CRESOL, 3,5 XYLENOL AND MIXTURES THEREOF, SAID POLYMETHYLOL COMPOUNDS HAVING A TOTAL COMBINED FORMALDEHYDE CONTENT OF BETWEEN ABOUT 2 1/4 AND 3 MOLS PER MOL OF PHENOLIC MATERIAL; ADDING A VOLATILE COMPATIBLE ORGANIC SOLVENT, AND AN ACID CATALYST TO SAID SYRUP TO ESTABLISH A PH OF 5 TO 6; AZETROPICALLY DISTILLING SOLVENT AND WATER FROM SAID MASS WHILE ADDING SUFFICIENT SOLVENT TO THE DISTILLING MASS TO MAINTAIN ITS VISCOSITY BELOW ABOUT Z, AND SO CONTINUING THE AZEO,TROPIC DISTILLATION AND SEPARATION OF WATER UNTIL THE MASS ATTAINS A VISCOSITY BETWEEN A AND D, INCLUSIVE, WHEN MEASURED THEREIN AT A NONVOLATILE-MATTER LEVEL OF BETWEEN 31. 6% AND 34.6%, INCLUSIVE, THEREBY CONVERTING SAID SYRUP INTO A BODIED, POTENTIALLY HEAT-REACTIVE FILM-FORMING MATERIAL; AND ADDING TO THE BODIED MATERIAL FROM 6% TO 10% BY WEIGHT THEREOF, OF AN ACID ACCELERATOR.
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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |