US3296228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of acrylonitrile syrup
Assignee: EIDP Inc
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Filing: 1962-07-24
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Granted: 1967-01-03
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Squire Edward Noonan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:47
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS OF PRODUCING A PLOYMER-IN-MONOMER SOLUTION OF ACRYLONITRILE HAGING A PREDETERMINED VISCOSITY OF 24*C. OF FROM 0.1 POISE TO THAT OF A GEL AND A POLYMER CONCENTRATION OF 1.0 TO 60% WHICH COMPRISES: (A) MIXING ACRYLONITRILE MONOMER AND AT LEAST ONE SOLUBILIZING MONOMER, THE AMOUNT OF SOLUBILIZING MONOMER IN THE MIXTURE BEING FROM 1 TO 25 MOLE PERCENT OF THE MIXTURE, (B) ADDING AN AMOUNT OF FREE RADICAL PRODUCING INITIATOR SUFFICIENT TO POLYMERIZE THE MIXTURE TO A PREDETERMINED VISCOSITY AS MEASURED AT 24*C. WITHIN THE RANGE OF 0.1 POISE TO THAT OF A GEL, (C) POLYMERIZING SAID MIXTURE TO FORM A POLYMER-INMONOMER SOLUTION, AND (D) STOPPING THE POLYMERIZATION REACTION WHEN THE VISCOSITY REACHES THE PREDETERMINED VISCOSITY.
Claim 2
Dependent Claim
117 words
A PROCESS OF PRODUCING A PLOYMER-IN-MONOMER SOLUTION OF ACRYLONITRILE HAGING A PREDETERMINED VISCOSITY OF 24*C. OF FROM 0.1 POISE TO THAT OF A GEL AND A POLYMER CONCENTRATION OF 1.0 TO 60% WHICH COMPRISES: (A) MIXING ACRYLONITRILE MONOMER AND AT LEAST ONE SOLUBILIZING MONOMER, THE AMOUNT OF SOLUBILIZING MONOMER IN THE MIXTURE BEING FROM 1 TO 25 MOLE PERCENT OF THE MIXTURE, (B) ADDING AN AMOUNT OF FREE RADICAL PRODUCING INITIATOR SUFFICIENT TO POLYMERIZE THE MIXTURE TO A PREDETERMINED VISCOSITY AS MEASURED AT 24*C. WITHIN THE RANGE OF 0.1 POISE TO THAT OF A GEL, (C) POLYMERIZING SAID MIXTURE TO FORM A POLYMER-INMONOMER SOLUTION, AND (D) STOPPING THE POLYMERIZATION REACTION WHEN THE VISCOSITY REACHES THE PREDETERMINED VISCOSITY.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |