US3264369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous composition of epoxidized p, p'-dihydroxy, diphenyldimethylmethane, a phenol-formaldehyde novolac and an alkanol-amine catalyst
Assignee: Reichhold Chemicals Inc
•
Filing: 1964-12-08
•
Granted: 1966-08-02
•
Expires: 1984-12-08
Abstract
No abstract record available.
Inventors
- 👤 Salim N Ephraim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:51
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08L; C08L63/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A STABLE THERMOHARDENABLE RESIN COMPOSITION COMPRISING A BLEND OF (A) AN EPOXIDE RESIN CONTAINING 1,2EPOXY GROUPS, OBTAINED BY ETHERIFICATION OF 4,4''DIHYDROXYDIPHENYDIMETHYLMETHANE, WITH EPICHLOROHYDRIN IN AN ALKALINE MEDIUM; (B) A FUSIBLE NOVOLAC-TYPE PHENOLIC RESIN OBTAINED BY REACTING FORMALDEHYDE IN AN ACIDIC MEDIUM, WITH MONOHYDRIC PHENOLS HAVING AT LEAST ONE HYDROGEN FORMALEDEHYDE-REACTIVE ATOM ATTACHED TO THE BENZENE RING THEREOF, IN A RATIO OF ABOUT 0.5 TO 0.85 MOL FORMALDEHYDE PER 1.0 MOL PHENOL, AND, THEREAFTER, REMOVING AT LEAST SUBSTANTIAL PORTIONS OF THE VOLATILES AND THE UNREACTED PORTION OF THE PHENOL BY DISTILLATION, WHEREIN THE WEIGHT RATIO OF (A) TO (B) IS FROM ABOUT 1 TO 5 TO ABOUT 5 TO 1; AND (C) A SMALL, CATALYTICALLY EFFECTIVE AMOUNT OF N,N,N'',N''TETRAKIS (HYDROXYPROPYL) ETHYLENEDIAMINE.
Claim 2
Dependent Claim
120 words
A STABLE THERMOHARDENABLE RESIN COMPOSITION COMPRISING A BLEND OF (A) AN EPOXIDE RESIN CONTAINING 1,2EPOXY GROUPS, OBTAINED BY ETHERIFICATION OF 4,4''DIHYDROXYDIPHENYDIMETHYLMETHANE, WITH EPICHLOROHYDRIN IN AN ALKALINE MEDIUM; (B) A FUSIBLE NOVOLAC-TYPE PHENOLIC RESIN OBTAINED BY REACTING FORMALDEHYDE IN AN ACIDIC MEDIUM, WITH MONOHYDRIC PHENOLS HAVING AT LEAST ONE HYDROGEN FORMALEDEHYDE-REACTIVE ATOM ATTACHED TO THE BENZENE RING THEREOF, IN A RATIO OF ABOUT 0.5 TO 0.85 MOL FORMALDEHYDE PER 1.0 MOL PHENOL, AND, THEREAFTER, REMOVING AT LEAST SUBSTANTIAL PORTIONS OF THE VOLATILES AND THE UNREACTED PORTION OF THE PHENOL BY DISTILLATION, WHEREIN THE WEIGHT RATIO OF (A) TO (B) IS FROM ABOUT 1 TO 5 TO ABOUT 5 TO 1; AND (C) A SMALL, CATALYTICALLY EFFECTIVE AMOUNT OF N,N,N'',N''TETRAKIS (HYDROXYPROPYL) ETHYLENEDIAMINE.
Claim 3
Dependent Claim
125 words
A STABLE THERMOHARDENABLE RESIN COMPOSITION COMPRISING A BLEND OF (A) AN EPOXIDE RESIN CONTAINING 1,2EPOXY GROUPS, OBTAINED BY ETHERIFICATION OF 4,4''-DIHYDROXYDIPHENYLDIMETHYLMETHANE, WITH EPICHLOROHYDRIN IN AN ALKALINE MEDIUM; (B) A FUSIBLE NOVALAC-TYPE PHENOLIC RESIN OBTAINED BY REACTING FORMALDEHYDE, IN AN ACIDIC MEDIUM, WITH MONOHYDRIC PHENOLS HAVING AT LEAST ONE HYDROGEN FORMALDEHYDE-REACTIVE ATOM ATTACHED TO THE BENZENE RING THEREOF, IN A RATIO OF ABOUT 0.5 TO 0.85 MOL FORMALDEHYDE PER 1.0 MOL PHENOL, AND, THEREAFTER, REMOVING AT LEAST SUBSTANTIAL PORTIONS OF THE VOLATILES AND THE UNREACTED PORTION OF THE PHENOL BY DISTILLATION, WHEREIN THE WEIGHT RATIO OF (A) TO (B) IS FROM ABOUT 1 TO 5 TO ABOUT 5 TO 1; AND (C) A SMALL, CATALYTICALLY EFFECTIVE AMOUNT OF ETHOXYLATED FATTY ACID AMINES REPRESENTED BY THE FORMULA
Claim 4
Dependent Claim
125 words
A STABLE THERMOHARDENABLE RESIN COMPOSITION COMPRISING A BLEND OF (A) AN EPOXIDE RESIN CONTAINING 1,2EPOXY GROUPS, OBTAINED BY ETHERIFICATION OF 4,4''-DIHYDROXYDIPHENYLDIMETHYLMETHANE, WITH EPICHLOROHYDRIN IN AN ALKALINE MEDIUM; (B) A FUSIBLE NOVALAC-TYPE PHENOLIC RESIN OBTAINED BY REACTING FORMALDEHYDE, IN AN ACIDIC MEDIUM, WITH MONOHYDRIC PHENOLS HAVING AT LEAST ONE HYDROGEN FORMALDEHYDE-REACTIVE ATOM ATTACHED TO THE BENZENE RING THEREOF, IN A RATIO OF ABOUT 0.5 TO 0.85 MOL FORMALDEHYDE PER 1.0 MOL PHENOL, AND, THEREAFTER, REMOVING AT LEAST SUBSTANTIAL PORTIONS OF THE VOLATILES AND THE UNREACTED PORTION OF THE PHENOL BY DISTILLATION, WHEREIN THE WEIGHT RATIO OF (A) TO (B) IS FROM ABOUT 1 TO 5 TO ABOUT 5 TO 1; AND (C) A SMALL, CATALYTICALLY EFFECTIVE AMOUNT OF ETHOXYLATED FATTY ACID AMINES REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2697118A
Cited
US3200172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |