US3075932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing polyepoxides with polyamino polyamide compounds and resulting products
Assignee: Shell USA Inc
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Filing: 1959-04-13
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Granted: 1963-01-29
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey R Edwards
- 👤 Johannes J Zonsveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:34
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/003; C; C08; C08L; C08L63/00; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR CURING POLYEPOXIDES TO FORM RESINIFIED INFUSIBLE INSOULBLE PRODUCTS WHICH COMPRISES MIXING AND REACTING A POLYAMINO POLYAMIDE PREPARED FROM A POLYBASIC ACID AND ALIPHATIC POLYAMINE, SAID POLYAMINO POLYAMIDE CONTAINING AMINO NITROGEN ATOMS HAVING ATTACHED TO AT LEAST 2 OF SUCH NITROGEN ATOMS FROM 1 TO 2 HYDROGEN ATOMS AND HAVING A TOTAL OF AT LEAST 3 AMINO HYDROGEN ATOMS AND A MOLECULAR WEIGHT OF AT LEAST 300, WITH A POLYEPOXIDE HAVING MORE THAN ONE VIC-EPOXY GROUP IN THE PRESENCE OF 4% TO 20% BY WEIGHT OF POLYEPOXIDE OF A MONOHYDRIC PHENOL.
Claim 2
Dependent Claim
93 words
A PROCESS FOR CURING POLYEPOXIDES TO FORM RESINIFIED INFUSIBLE INSOULBLE PRODUCTS WHICH COMPRISES MIXING AND REACTING A POLYAMINO POLYAMIDE PREPARED FROM A POLYBASIC ACID AND ALIPHATIC POLYAMINE, SAID POLYAMINO POLYAMIDE CONTAINING AMINO NITROGEN ATOMS HAVING ATTACHED TO AT LEAST 2 OF SUCH NITROGEN ATOMS FROM 1 TO 2 HYDROGEN ATOMS AND HAVING A TOTAL OF AT LEAST 3 AMINO HYDROGEN ATOMS AND A MOLECULAR WEIGHT OF AT LEAST 300, WITH A POLYEPOXIDE HAVING MORE THAN ONE VIC-EPOXY GROUP IN THE PRESENCE OF 4% TO 20% BY WEIGHT OF POLYEPOXIDE OF A MONOHYDRIC PHENOL.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |