US2982742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylene oxide polymers
Assignee: Union Carbide Corp
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Filing: 1957-06-27
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Granted: 1961-05-02
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Keith L Smith
- 👤 Edward C Seltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:05
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/324; C08G65/329; C08G65/331
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR DECREASING THE MOLECULAR WEIGHT OF POLY(OLEFIN OXIDE) WHICH HAS AN APPARENT VISCOSITY IN THE RANGE OF FROM ABOUT 200 TO ABOUT 120,000 POISES AS DETERMINED BY THE HAGAN-POISEUILLE METHOD AT 150*C. AND AT A PRESSURE OF FROM ABOUT 10 TO 2,000 P.S.I.G. WHICH COMPRISES CONTACTING SAID POLY(OLEFIN OXIDE) WITH A PEROXIDE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN PEROXIDE, PERACETIC ACID, T-BUTYL HYDROPEROXIDE, CUMENE HYDROPEROXIDE, DIACETYL PEROXIDE, DIBENZOYL PEROXIDE, DIETHYL PEROXIDE, AND PEROXYBENZOIC ACID, FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE POLY(OLEFIN OXIDE) OF LOWER MOLECULAR WEIGHT THAN THE ORIGINAL POLY(OLEFIN OXIDE) STARTING MATERIAL.
Claim 2
Dependent Claim
99 words
A PROCESS FOR DECREASING THE MOLECULAR WEIGHT OF POLY(OLEFIN OXIDE) WHICH HAS AN APPARENT VISCOSITY IN THE RANGE OF FROM ABOUT 200 TO ABOUT 120,000 POISES AS DETERMINED BY THE HAGAN-POISEUILLE METHOD AT 150*C. AND AT A PRESSURE OF FROM ABOUT 10 TO 2,000 P.S.I.G. WHICH COMPRISES CONTACTING SAID POLY(OLEFIN OXIDE) WITH A PEROXIDE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN PEROXIDE, PERACETIC ACID, T-BUTYL HYDROPEROXIDE, CUMENE HYDROPEROXIDE, DIACETYL PEROXIDE, DIBENZOYL PEROXIDE, DIETHYL PEROXIDE, AND PEROXYBENZOIC ACID, FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE POLY(OLEFIN OXIDE) OF LOWER MOLECULAR WEIGHT THAN THE ORIGINAL POLY(OLEFIN OXIDE) STARTING MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |