Patent US4964938A successfully refreshed from Google Patents.
Patent US3869489A successfully refreshed from Google Patents.
US3869489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing tert.-butyl p-tert. butylperbenzoate
Assignee: Orkem SA
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Filing: 1973-07-03
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Granted: 1975-03-04
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Expires: 1993-07-03
Abstract
Abstract Process for manufacturing tertiarbutyl p-tertiarybutyl perbenzoate at least 99 percent pure. The process consists in reacting 4-tertiarybutyl benzoic acid chloride with an alkaline solution of a tertiarylbutyl peroxide salt at a temperature comprised between 40* and 45*C possibly in the presence of a surfactant.
Inventors
- 👤 Jacques Tiquet
- 👤 Jean-Louis Cros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:49
CPC Classifications
C; C07; C07C; C07C407/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
12 words
IN A PROCESS FOR MANUFACTURING TERT. BUTYL-4-TERT. BUTYL PERBENZOATE HAVING THE FORMULA
Claim 2
Dependent Claim
12 words
IN A PROCESS FOR MANUFACTURING TERT. BUTYL-4-TERT. BUTYL PERBENZOATE HAVING THE FORMULA
Claim 3
Dependent Claim
25 words
Process according to claim 1 wherein said alkaline solution of the tert.butyl hydroperoxide salt is a sodium hydroxide solution of the tert.butyl hydroperoxide sodium salt.
Claim 4
Dependent Claim
34 words
Process according to claim 1 wherein the tert.butyl hydroperoxide salt is first reacted with said 4-tert.butyl benzoic acid chloride and an excess of said salt is then added after said acid chloride has reacted.
Claim 5
Dependent Claim
31 words
Process according to claim 1 wherein the reaction is carried out in the presence of a surfactant compatible with the reaction medium and selected from the group consisting of alkylary sulphonates.
References Cited (Backward Citations)
US3082236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |