Patent US5041680A successfully refreshed from Google Patents.
US5041680A
Expired / Lapsed
US
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Production of hydrogen peroxide
Assignee: Lyondell Chemical Technology LP
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Filing: 1991-02-19
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Granted: 1991-08-20
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Expires: 2011-02-19
Abstract
Abstract Hydrogen peroxide and organic active oxygen-containing compounds in an organic stream, such as that from a methyl benzyl alcohol oxidate after hydrogen peroxide separation, are selectively decomposed by non-catalytic thermal treatment at 150°-180° C. for 20-60 minutes whereby the organic active oxygen materials selectively decompose to acetophenone and methyl benzyl alcohol.
Inventors
- 👤 Rajendra S. Albal
- 👤 Robert N. Cochran
- 👤 Alan P. Woinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:36
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/80; C01; C01B; C01B15/00; C01B15/01; C01B15/013; C07C29/00; C07C29/74; C07C29/88; C07C45/27; C07C45/32; C07C45/37; C07C45/39; C07C45/51; C07C45/53; C07C45/81; C07C45/82
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
The process wherein an organic stream containing hydrogen peroxide and organic active oxygen-containing compounds is subjected to liquid phase non-catalytic thermal treatment at 150°-180° C. for 20-60 minutes whereby the said hydrogen peroxide and organic active oxygen compounds are decomposed, said organic active oxygen-containing compounds selectively decomposing to acetophenone and methyl benzyl alcohol.
Claim 2
Dependent Claim
53 words
The process wherein an organic stream containing hydrogen peroxide and organic active oxygen-containing compounds is subjected to liquid phase non-catalytic thermal treatment at 150°-180° C. for 20-60 minutes whereby the said hydrogen peroxide and organic active oxygen compounds are decomposed, said organic active oxygen-containing compounds selectively decomposing to acetophenone and methyl benzyl alcohol.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the non-catalytic thermal treatment is carried out at 150-200 psig.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the non-catalytic thermal treatment is carried out at 160°-180° C. for 30-45 minutes.
References Cited (Backward Citations)
US4975266A
Cited
US4994625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |