US3403113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable nitrogen-containing condensation products
Assignee: BASF Schweiz AG
•
Filing: 1966-03-18
•
Granted: 1968-09-24
•
Expires: 1986-03-18
Abstract
No abstract record available.
Inventors
- 👤 Diethelm Hermann
- 👤 Fisch Willy
- 👤 Forster Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:46
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G12/46; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A NEW RESINOUS NITROGEN-CONTAINING CONDENSATION PRODUCT WHICH IS OBTAINED BY CONDENSING IN A FIRST STAGE (A) AN AMIDE SELECTED FROM THE GROUP CONSISTING OF DICYANDIAMIDE AND CYANAMIDE WITH (B) A POLYAMINE CONTAINING AT LEAST THREE AMINO GROUPS SELECTED FROM THE GROUP CONSISTING OF PRIMARY AMINO GROUP AND SECONDARY AMINO GROUP, AND REACTING THE RESULTING POLYCONDENSATE IN A SECOND REACTION STAGE WITH (C) AN EPIHALOHYDRIN, BOTH OPERATIONS BEING PERFORMED AT AN ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
72 words
A NEW RESINOUS NITROGEN-CONTAINING CONDENSATION PRODUCT WHICH IS OBTAINED BY CONDENSING IN A FIRST STAGE (A) AN AMIDE SELECTED FROM THE GROUP CONSISTING OF DICYANDIAMIDE AND CYANAMIDE WITH (B) A POLYAMINE CONTAINING AT LEAST THREE AMINO GROUPS SELECTED FROM THE GROUP CONSISTING OF PRIMARY AMINO GROUP AND SECONDARY AMINO GROUP, AND REACTING THE RESULTING POLYCONDENSATE IN A SECOND REACTION STAGE WITH (C) AN EPIHALOHYDRIN, BOTH OPERATIONS BEING PERFORMED AT AN ELEVATED TEMPERATURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |