Patent US3541516A successfully refreshed from Google Patents.
US2814610A
Expired / Lapsed
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Method of treating terpene resins
Assignee: SCHENECTADY VARNISH COMPANY Inc
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Filing: 1955-06-03
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Granted: 1957-11-26
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Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Clinton A Braidwood
- 👤 Robert W Hamre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:48
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS OF PREPARING A TERPENE RESIN COMPRISING POLYMERIZING A TERPENE IN THE PRESENCE OF A FRIEDELCRAFTS CATALYST, HYDROLYZING THE CATALYST AFTER THE POLYMERIZATION AND THEN CONTACTING THE RESIN WITH A SEQUESTERING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXY CARBOXYLIC ACIDS, LACTONES OF HYDROXY CARBOXYLIC ACIDS, SALTS OF HYDROXY CARBOXYLIC ACIDS, POLYBASIC ACIDS AND SALTS OF POLYBASIC ACIDS TO REDUCE THE METAL AND HALIDE CONTENT OF THE POLYMER AND SEPARATING THE POLYMER FROM THE SEQUESTERING AGENT.
Claim 2
Dependent Claim
77 words
A PROCESS OF PREPARING A TERPENE RESIN COMPRISING POLYMERIZING A TERPENE IN THE PRESENCE OF A FRIEDELCRAFTS CATALYST, HYDROLYZING THE CATALYST AFTER THE POLYMERIZATION AND THEN CONTACTING THE RESIN WITH A SEQUESTERING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXY CARBOXYLIC ACIDS, LACTONES OF HYDROXY CARBOXYLIC ACIDS, SALTS OF HYDROXY CARBOXYLIC ACIDS, POLYBASIC ACIDS AND SALTS OF POLYBASIC ACIDS TO REDUCE THE METAL AND HALIDE CONTENT OF THE POLYMER AND SEPARATING THE POLYMER FROM THE SEQUESTERING AGENT.
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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |