US2536579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorination of rubber-fatty acid mixtures
Assignee: Individual
•
Filing: 1947-01-29
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Granted: 1951-01-02
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Expires: 1967-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sommer Charles Heintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:02
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/12; C08C19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR PREPARING A COMPOSITION OF MATTER COMPRISING: HEATING A MIXTURE OF RUBBER AND A HIGHER FATTY ACID CONTAINING MATERIAL TO A TEMPERATURE BETWEEN ABOUT 230* C. AND 350* C. UNTIL THE WEIGHT OF THE MIXTURE HAS DECREASED BETWEEN ABOUT 3% AND 35%, DISSOLVING THE RESULTING PRODUCT IN A CHLORINE CONTAINING SOLVENT COMPOUND, PASSING CHLORINE, THROUGH SAID DISSOLVED PRODUCT, AND SEPARATING THE RESULTING CHLORINATED PRODUCT TO OBTAIN A HOMOGENEOUS STABLE RESIN.
Claim 2
Dependent Claim
72 words
A PROCESS FOR PREPARING A COMPOSITION OF MATTER COMPRISING: HEATING A MIXTURE OF RUBBER AND A HIGHER FATTY ACID CONTAINING MATERIAL TO A TEMPERATURE BETWEEN ABOUT 230* C. AND 350* C. UNTIL THE WEIGHT OF THE MIXTURE HAS DECREASED BETWEEN ABOUT 3% AND 35%, DISSOLVING THE RESULTING PRODUCT IN A CHLORINE CONTAINING SOLVENT COMPOUND, PASSING CHLORINE, THROUGH SAID DISSOLVED PRODUCT, AND SEPARATING THE RESULTING CHLORINATED PRODUCT TO OBTAIN A HOMOGENEOUS STABLE RESIN.
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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |