US2610964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymerization of 1, 3-butadienes with dialkyl methylenemalonates
Assignee: Uniroyal Inc
•
Filing: 1949-04-14
•
Granted: 1952-09-16
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Expires: 1969-04-14
Abstract
No abstract record available.
Inventors
- 👤 Roswell H Ewart
- 👤 Wendell V Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:08
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE PROCESS OF PREPARING A FIBER-FORMING, PETROLEUM-OIL-INSOLUBLE COPOLYMER WHICH COMPRISES COPOLYMERIZING IN AQUEOUS EMULSION A MIXTURE OF (A) FROM ONE TO TWO 1,3-BUTADIENES OF THE FORMULA CH2=CR-CH=CH2, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND METHYL, (B) FROM ONE TO TWO DIESTERS OF METHYLENEMALONIC ACID WITH AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ALKANOLS AND HALOALKANOLS WHEREIN THE ALKYL AND HALOALKYL GROUPS HAVE FROM 1 TO 4 CARBON ATOMS, THE MOLAR RATIO OF (A) TO (B) BEING WITHIN THE RANGE FROM 1:4 TO 4:1, AN ACID-STABLE EMULSIFYING AGENT, AND 0.0001 TO 1% OF A MULTIVALENT METAL SALT ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF IRON SALTS AND COBALT SALTS, AT A TEMPERATURE OF -50 TO +30* C. SAID PERCENTAGES BEING BASED ON THE COMBINED WEIGHTS OF THE MONOMERIC MATERIALS AND (A) AND (B) BEING THE SOLE POLYMERIZABLE MONOMERS.
Claim 2
Dependent Claim
143 words
THE PROCESS OF PREPARING A FIBER-FORMING, PETROLEUM-OIL-INSOLUBLE COPOLYMER WHICH COMPRISES COPOLYMERIZING IN AQUEOUS EMULSION A MIXTURE OF (A) FROM ONE TO TWO 1,3-BUTADIENES OF THE FORMULA CH2=CR-CH=CH2, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND METHYL, (B) FROM ONE TO TWO DIESTERS OF METHYLENEMALONIC ACID WITH AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ALKANOLS AND HALOALKANOLS WHEREIN THE ALKYL AND HALOALKYL GROUPS HAVE FROM 1 TO 4 CARBON ATOMS, THE MOLAR RATIO OF (A) TO (B) BEING WITHIN THE RANGE FROM 1:4 TO 4:1, AN ACID-STABLE EMULSIFYING AGENT, AND 0.0001 TO 1% OF A MULTIVALENT METAL SALT ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF IRON SALTS AND COBALT SALTS, AT A TEMPERATURE OF -50 TO +30* C. SAID PERCENTAGES BEING BASED ON THE COMBINED WEIGHTS OF THE MONOMERIC MATERIALS AND (A) AND (B) BEING THE SOLE POLYMERIZABLE MONOMERS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |