Patent US2707180A successfully refreshed from Google Patents.
US2707180A
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Chloroprene emulsion polymerization process
Assignee: EIDP Inc
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Filing: 1951-10-08
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Granted: 1955-04-26
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Expires: 1971-10-08
Abstract
No abstract record available.
Inventors
- 👤 John T Maynard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:38
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
PROCESS FOR OBTAINING A SOLUBLE, PLASTIC, FREEZERESISTANT CHLOROPRENE POLYMER WHICH COMPRISES POLYMERIZING CHLOROPRENE AT 40-125* C. AQUEOUS DISPERSION CONTAINING FROM 0.02 TO 5%, BASED ON THE CHLOROPRENE, OF A POLYHYDRIC PHENOLIC RUBBER ANTI-OXIDANT, FROM 0.1 TO 2%, BASED ON THE CHLOROPRENE, OF ALKANE THIOL OF 8 TO 18 CARBONS, AND, AS THE POLYMERIZATION INITITOR, FROM O.01 TO 1%, BASED ON THE CHLOROPRENE, OF AN AZO COMPOUND WHICH HAS ITS AZO GROUP ATTACHED TO TWO MONOVALENT CYANOHYDROCARBON RADICALS WHEREIN THE CYANO GROUP IS ON TERTIARY CARBON BONDED TO THE AZO GROUP UNTIL 50-80% OF THE CHLOROPRENE IS CONVERTED TO POLYCHLOROLPRENE AND THEN ISOLATING THE POLYCHLOROPRENE.
Claim 2
Dependent Claim
104 words
PROCESS FOR OBTAINING A SOLUBLE, PLASTIC, FREEZERESISTANT CHLOROPRENE POLYMER WHICH COMPRISES POLYMERIZING CHLOROPRENE AT 40-125* C. AQUEOUS DISPERSION CONTAINING FROM 0.02 TO 5%, BASED ON THE CHLOROPRENE, OF A POLYHYDRIC PHENOLIC RUBBER ANTI-OXIDANT, FROM 0.1 TO 2%, BASED ON THE CHLOROPRENE, OF ALKANE THIOL OF 8 TO 18 CARBONS, AND, AS THE POLYMERIZATION INITITOR, FROM O.01 TO 1%, BASED ON THE CHLOROPRENE, OF AN AZO COMPOUND WHICH HAS ITS AZO GROUP ATTACHED TO TWO MONOVALENT CYANOHYDROCARBON RADICALS WHEREIN THE CYANO GROUP IS ON TERTIARY CARBON BONDED TO THE AZO GROUP UNTIL 50-80% OF THE CHLOROPRENE IS CONVERTED TO POLYCHLOROLPRENE AND THEN ISOLATING THE POLYCHLOROPRENE.
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) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |