US3839503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing blends of finely particulate polyacrylonitrile and high vinyl polybutadiene
Assignee: Phillips Petroleum Co
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Filing: 1972-10-10
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Granted: 1974-10-01
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Expires: 1992-10-10
Abstract
Abstract 1. A PROCESS FOR PREPARING A BLEND OF (1) A FINELY PARTICULATE POLYMER OF ACRYLONITRILE, AND (2) POLYBUTADIENE HAVING A VINYL CONTENT OF AT LEAST ABOUT 55 PERCENT BY WEIGHT COMPRISNG THE STEPS OF: (A) SLURRING THE POLYMER OF ACRYLONITRILE IN A HYDROCARBON SOLUTION OF THE POLYBUTADIENE WHEREIN SAID HYDROCARBON IS CHOSEN FROM AMONG HYDROCARBONS IN WHICH SAID POLYMER OF ACRYLONITRILE IS INSOLUBLE, AND (B) RECOVERING THE POLYMER MIXTURE FROM THE HYDROCARBON.
Inventors
- 👤 G Kahle
- 👤 L Fodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:00
CPC Classifications
C; C08; C08L; C08L9/00; C08J; C08J3/00; C08J3/005; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR PREPARING A BLEND OF (1) A FINELY PARTICULATE POLYMER OF ACRYLONITRILE, AND (2) POLYBUTADIENE HAVING A VINYL CONTENT OF AT LEAST ABOUT 55 PERCENT BY WEIGHT COMPRISNG THE STEPS OF: (A) SLURRING THE POLYMER OF ACRYLONITRILE IN A HYDROCARBON SOLUTION OF THE POLYBUTADIENE WHEREIN SAID HYDROCARBON IS CHOSEN FROM AMONG HYDROCARBONS IN WHICH SAID POLYMER OF ACRYLONITRILE IS INSOLUBLE, AND (B) RECOVERING THE POLYMER MIXTURE FROM THE HYDROCARBON.
Claim 2
Dependent Claim
71 words
A PROCESS FOR PREPARING A BLEND OF (1) A FINELY PARTICULATE POLYMER OF ACRYLONITRILE, AND (2) POLYBUTADIENE HAVING A VINYL CONTENT OF AT LEAST ABOUT 55 PERCENT BY WEIGHT COMPRISNG THE STEPS OF: (A) SLURRING THE POLYMER OF ACRYLONITRILE IN A HYDROCARBON SOLUTION OF THE POLYBUTADIENE WHEREIN SAID HYDROCARBON IS CHOSEN FROM AMONG HYDROCARBONS IN WHICH SAID POLYMER OF ACRYLONITRILE IS INSOLUBLE, AND (B) RECOVERING THE POLYMER MIXTURE FROM THE HYDROCARBON.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |