US3200100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of acrylonitrile polymers
Assignee: Bayer AG
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Filing: 1960-09-07
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Granted: 1965-08-10
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Expires: 1980-09-07
Abstract
No abstract record available.
Inventors
- 👤 Dennstedt Ingofroh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
C; C08; C08F; C08F273/00; C08F2/00; C08F2/12; C08F2/16; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08F291/00; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A PROCESS WHEREIN ACRYLONITRILE IS POLYMERIZED AT A PH BELOW 7 IN AN AQUEOUS DISPERSION CONTAINING A FREE RADICAL-FORMING POLYMERIZATION CATALYST, 0.00001 TO 0.1% BY WEIGHT OF MONOMER OF A SALT OF A DIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND COPPER, AND A SUFFICIENT AMOUNT OF A COMPLEX FORMER TO FORM A CONPLEX WITH SAID SALT, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE AFORESAID POLYMERIZATION IN THE PRESENCE OF 0.5 TO 20% BY WEIGHT OF MONOMER OF A WATER-SOLUBLE COLORLESS ALUMINUM SALT AND 0.5 TO 10% BY WEIGHT OF OF MONOMER OF A LATEX OF A SULFONIC ACID GROUP-CONTAINING COPOLYMER OF AN ACRYLIC MONOMER, AND RECOVERING FROM THE AQUEOUS DISPERSION OF THE POLYMERIZED ACRYLONITRILE.
Claim 2
Dependent Claim
117 words
IN A PROCESS WHEREIN ACRYLONITRILE IS POLYMERIZED AT A PH BELOW 7 IN AN AQUEOUS DISPERSION CONTAINING A FREE RADICAL-FORMING POLYMERIZATION CATALYST, 0.00001 TO 0.1% BY WEIGHT OF MONOMER OF A SALT OF A DIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND COPPER, AND A SUFFICIENT AMOUNT OF A COMPLEX FORMER TO FORM A CONPLEX WITH SAID SALT, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE AFORESAID POLYMERIZATION IN THE PRESENCE OF 0.5 TO 20% BY WEIGHT OF MONOMER OF A WATER-SOLUBLE COLORLESS ALUMINUM SALT AND 0.5 TO 10% BY WEIGHT OF OF MONOMER OF A LATEX OF A SULFONIC ACID GROUP-CONTAINING COPOLYMER OF AN ACRYLIC MONOMER, AND RECOVERING FROM THE AQUEOUS DISPERSION OF THE POLYMERIZED ACRYLONITRILE.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |