US2955907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of shaped articles from rubbery polymers containing reactive groups
Assignee: Bayer AG
•
Filing: 1955-10-05
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Granted: 1960-10-11
•
Expires: 1975-10-05
Abstract
No abstract record available.
Inventors
- 👤 Kolb Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:27
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0078; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/731; Y; Y10; Y10S; Y10S260/00; Y10S260/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
PROCESS FOR THE PRODUCTION OF ELASTIC SHAPED ARTICLES WHICH COMPRISES EXTRUDING INTO AN AQUEOUS COAGULATING BATH AN AQUEOUS EMULSION CONTAINING 10-60% BY WEIGHT OF A SYNTHETIC RUBBERY POLYMER CONSISTING ESSENTIALLY OF A LINEAR CARBON CHAIN TO WHICH ARE LINKED FROM 0.005-0.6 MOL BY WEIGHT OF CARBOXYL GROUPS PER 100 PARTS BY WEIGHT OF POLYMER, SO AS TO PRODUCE A SELF-SUPPORTING COHERENT SHAPED COAGULATE, SAID COAGULATING BATH CONTAINING DISSOLVED THERE''N AN AGENT CAPABLE OF REACTING WITH SAID CARBOXYL GROUPS TO EFFECT CROSS-LINKAGE, SAID AGENT BEING SELECTED FROM THE GROUP CONSISTING OF A POLYAMINE AND A POLYEPOXY COMPOUND, REMOVING SAID SHAPED COAGULATE FROM SAID COAGULATING BATH AT A WITHDRAWAL VELOCITY OF ABOUT 20-60 METERS PER MINUTE, AND DRYING SAID COAGULATE.
Claim 2
Dependent Claim
118 words
PROCESS FOR THE PRODUCTION OF ELASTIC SHAPED ARTICLES WHICH COMPRISES EXTRUDING INTO AN AQUEOUS COAGULATING BATH AN AQUEOUS EMULSION CONTAINING 10-60% BY WEIGHT OF A SYNTHETIC RUBBERY POLYMER CONSISTING ESSENTIALLY OF A LINEAR CARBON CHAIN TO WHICH ARE LINKED FROM 0.005-0.6 MOL BY WEIGHT OF CARBOXYL GROUPS PER 100 PARTS BY WEIGHT OF POLYMER, SO AS TO PRODUCE A SELF-SUPPORTING COHERENT SHAPED COAGULATE, SAID COAGULATING BATH CONTAINING DISSOLVED THERE''N AN AGENT CAPABLE OF REACTING WITH SAID CARBOXYL GROUPS TO EFFECT CROSS-LINKAGE, SAID AGENT BEING SELECTED FROM THE GROUP CONSISTING OF A POLYAMINE AND A POLYEPOXY COMPOUND, REMOVING SAID SHAPED COAGULATE FROM SAID COAGULATING BATH AT A WITHDRAWAL VELOCITY OF ABOUT 20-60 METERS PER MINUTE, AND DRYING SAID COAGULATE.
References Cited (Backward Citations)
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US2288982A
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US2395505A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |