US3637865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethers stabilized with mixture of butylated hydroxy toluene and p p'-dioctyl diphenyl amine
Assignee: Olin Corp
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Filing: 1968-10-15
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Granted: 1972-01-25
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Expires: 1988-10-15
Abstract
Abstract POLYETHER POLYOLS STABILIZED AGAINST OXIDATION COMPRISED OF POLYETHER POLYOLS ADMIXED WITH A STABILIZING MIXTURE OF 2,6-DITERTIARY-BUTYL-4-METHYL PHENOL AND A P,P''-DIALKYL DIPHENYL AMINE. POLYURETHANE FOAMS CAN BE INHIBITED AGAINST SCORCHING WHEN THE SAME STABILIZING MIXTURE IS UTILIZED IN THE FOAM PREPARATION.
Inventors
- 👤 Robert C Haring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:34
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/16; C08K5/17; C08K5/18; C08J2375/00; C08J2375/04
Claims Analysis
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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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |