Patent US2700034A successfully refreshed from Google Patents.
US2700034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeable acrylonitrile filamentforming copolymer
Assignee: Honeywell International Inc
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Filing: 1951-03-28
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Granted: 1955-01-18
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Expires: 1971-03-28
Abstract
No abstract record available.
Inventors
- 👤 Walter J Zybert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:15
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
PROCESS OF PRODUCING ACRYLONITRILE-METHYL METHARCYLATE COPOLYMER SUITABLE FOR SPINNING INTO FILAMENT WHICH COMPRISES INTRODUCING ACRYLONITRILE AND METHYL METHACRYLATE MONOMERS IN WEIGHT RATIOS OF MONOMERS BETWEEN ABOUT 60:40 AND ABOUT 85:15 OF ACRYLONITRILE: METHYLY METHACRYLATE INTO AQUEOUS MEDIUM, ESTABLISHING A MONOMER PHASE DISTINCT FROM THE AQUEOUS MEDIUM, MAINTAINING MONOMER MIXTURE CONCENTRATION BELOW ABOUT 10 WEIGHT PERCENT OF THE MONOMER-WATER REACTION MIXTURE, AND MAINTAINING POLYMERIZATION CONDITIONS UNTIL BETWEEN ABOUT 60% AND SUBSTANTIALLY ALL OF THE MONOMERS HAVE REACTED; AND WHEREIN AT LEAST IN THE INITIAL STAGES OF THE POLYMERIZATION THE MONOMERS ARE EMULSIFIED.
Claim 2
Dependent Claim
91 words
PROCESS OF PRODUCING ACRYLONITRILE-METHYL METHARCYLATE COPOLYMER SUITABLE FOR SPINNING INTO FILAMENT WHICH COMPRISES INTRODUCING ACRYLONITRILE AND METHYL METHACRYLATE MONOMERS IN WEIGHT RATIOS OF MONOMERS BETWEEN ABOUT 60:40 AND ABOUT 85:15 OF ACRYLONITRILE: METHYLY METHACRYLATE INTO AQUEOUS MEDIUM, ESTABLISHING A MONOMER PHASE DISTINCT FROM THE AQUEOUS MEDIUM, MAINTAINING MONOMER MIXTURE CONCENTRATION BELOW ABOUT 10 WEIGHT PERCENT OF THE MONOMER-WATER REACTION MIXTURE, AND MAINTAINING POLYMERIZATION CONDITIONS UNTIL BETWEEN ABOUT 60% AND SUBSTANTIALLY ALL OF THE MONOMERS HAVE REACTED; AND WHEREIN AT LEAST IN THE INITIAL STAGES OF THE POLYMERIZATION THE MONOMERS ARE EMULSIFIED.
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) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |