US2637717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing blended polymers
Assignee: Solutia Inc
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Filing: 1950-05-26
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Granted: 1953-05-05
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Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Costas H Basdekis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:09
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08L; C08L33/00; C08L33/18; C08L33/20; Y; Y10; Y10S; Y10S525/00; Y10S525/916
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PREPARING A MIXTURE OF POLYMERS, WHICH COMPRISES MIXING (A) AN AQUEOUS SLURRY OF A POLYMER OF AT LEAST 90 PER CENT ACRYLONITRILE PREPARED IN AN AQUEOUS MEDIUM IN THE PRESENCE OF SUFFICIENT ALKALI MEAL SALT OF A PEROXY ACID TO RENDER THE RESULTANT DISPERSION ACIDIC, AND (B) AQUEOUS EMULSION OF A POLYMER OF AT LEAST 15 PER CENT OF A TERTIARY AMINE CONTAINING A POLYMERIZABLE CARBON TO CARBON DOUBLE BOND, SAID EMULSION BEING STABILIZED BY THE PRESENCE OF A BASIC ANIONIC WETTING AGENT AND SEPARATING THE PRECIPITATED POLYMER BLEND.
Claim 2
Independent Claim
92 words
A METHOD OF PREPARING A MIXTURE OF POLYMERS, WHICH COMPRISES MIXING (A) AN AQUEOUS SLURRY OF A POLYMER OF AT LEAST 90 PER CENT ACRYLONITRILE PREPARED IN AN AQUEOUS MEDIUM IN THE PRESENCE OF SUFFICIENT ALKALI MEAL SALT OF A PEROXY ACID TO RENDER THE RESULTANT DISPERSION ACIDIC, AND (B) AQUEOUS EMULSION OF A POLYMER OF AT LEAST 15 PER CENT OF A TERTIARY AMINE CONTAINING A POLYMERIZABLE CARBON TO CARBON DOUBLE BOND, SAID EMULSION BEING STABILIZED BY THE PRESENCE OF A BASIC ANIONIC WETTING AGENT AND SEPARATING THE PRECIPITATED POLYMER BLEND.
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) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |