Patent US3098056A successfully refreshed from Google Patents.
US3098056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of hardened, polycarbonate-modified epoxy resin bodies
Assignee: Bayer AG
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Filing: 1961-03-06
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Granted: 1963-07-16
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Schnell Hermann
- 👤 Krimm Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:32
CPC Classifications
C; C08; C08L; C08L63/00; C08L69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR THE PRODUCTION OF A HARDENED ESTERMODIFIED EPOXY RESINOUS SOLID, WHICH COMPRISES HEATING TOGETHER AT A TEMPERATURE BETWEEN 100 AND 220*C., WHILE MOLDING THE SAME, A MIXTURE OF (A) AN EPOXY RESIN HAVING AT LEAST TWO EPOXY GROUPS IN ITS MOLECULE, (B) A MELTABLE LINEAR POLYCARBONATE OF AN ORGANIC POLYHYDROCY COMPOUND HAVING AT LEAST TWO FREE TERMINAL HYDROXYL RADICALS, AND (C) A HARDENER OF THE GROUP CONSISTING OF HIGH-BOILING AMINES, ALKALI-METAL COMPOUNDS, CATALYSTS OF THE FRIEDEL-CRAFTS TYPE, SULFUR TRIOXIDE, SULFURIC ACID, AROMATIC SULFONIC ACIDS, AND ANHYDRIDES OF ORGANIC DICARBOXYLIC ACIDS FOR A PERIOD SUFFICIENT TO CONVERT THE MIXTURE INTO AN ESSENTIALLY INSOLUBLE AND INFUSIBLE SOLID.
Claim 2
Dependent Claim
107 words
A PROCESS FOR THE PRODUCTION OF A HARDENED ESTERMODIFIED EPOXY RESINOUS SOLID, WHICH COMPRISES HEATING TOGETHER AT A TEMPERATURE BETWEEN 100 AND 220*C., WHILE MOLDING THE SAME, A MIXTURE OF (A) AN EPOXY RESIN HAVING AT LEAST TWO EPOXY GROUPS IN ITS MOLECULE, (B) A MELTABLE LINEAR POLYCARBONATE OF AN ORGANIC POLYHYDROCY COMPOUND HAVING AT LEAST TWO FREE TERMINAL HYDROXYL RADICALS, AND (C) A HARDENER OF THE GROUP CONSISTING OF HIGH-BOILING AMINES, ALKALI-METAL COMPOUNDS, CATALYSTS OF THE FRIEDEL-CRAFTS TYPE, SULFUR TRIOXIDE, SULFURIC ACID, AROMATIC SULFONIC ACIDS, AND ANHYDRIDES OF ORGANIC DICARBOXYLIC ACIDS FOR A PERIOD SUFFICIENT TO CONVERT THE MIXTURE INTO AN ESSENTIALLY INSOLUBLE AND INFUSIBLE SOLID.
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |