Patent US2937998A successfully refreshed from Google Patents.
US2937998A
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Process for preparing stable peroxidecontaining borates
Assignee: Henkel AG and Co KGaA
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Filing: 1955-10-10
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Granted: 1960-05-24
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Expires: 1975-10-10
Abstract
No abstract record available.
Inventors
- 👤 Habernickel Valentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:08
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/12; C11; C11D; C11D3/00; C11D3/39; D; D06; D06L; D06L4/00; D06L4/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR PREPARING STABLE SOLID PEROXIDE-CONTAINING BORATES, WHICH COMPRISES MAKING AN AQUEOUS SOLUTION OF A BORON COMPOUND, SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORAX AND METABORATES, NAOH AND H2O2 AT TEMPERATURES OF 0-30*C., IN A MOLAR RATIO OF B2O3, CALCULATED ON THE BORON COMPOUND PRESENT, TO NA2O OF APPROXIMATELY 1:1.1-2, AND OF H2O2 TO NA2O OF APPROXIMATELY 1.7-2.0:1, AND CONDUCTING SAID SOLUTION OVER HEATED SURFACES AT A TEMPERATURE RANGING FROM 100-130* C., WHEREBY A DRY BORATE HAVING AN ACTIVE OXYGEN CONTENT OF MORE THAN 15 PERCENT IS OBTAINED WHICH WILL NOT DECREASE DURING STORAGE, SAID BORATE BEING AN EFFECTIVE LAUNDERING, CLEANSING AND BLEACHING AGENT USABLE BY ITSELF WITHOUT ADDITION OF OTHER AGENTS.
Claim 2
Dependent Claim
115 words
A PROCESS FOR PREPARING STABLE SOLID PEROXIDE-CONTAINING BORATES, WHICH COMPRISES MAKING AN AQUEOUS SOLUTION OF A BORON COMPOUND, SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORAX AND METABORATES, NAOH AND H2O2 AT TEMPERATURES OF 0-30*C., IN A MOLAR RATIO OF B2O3, CALCULATED ON THE BORON COMPOUND PRESENT, TO NA2O OF APPROXIMATELY 1:1.1-2, AND OF H2O2 TO NA2O OF APPROXIMATELY 1.7-2.0:1, AND CONDUCTING SAID SOLUTION OVER HEATED SURFACES AT A TEMPERATURE RANGING FROM 100-130* C., WHEREBY A DRY BORATE HAVING AN ACTIVE OXYGEN CONTENT OF MORE THAN 15 PERCENT IS OBTAINED WHICH WILL NOT DECREASE DURING STORAGE, SAID BORATE BEING AN EFFECTIVE LAUNDERING, CLEANSING AND BLEACHING AGENT USABLE BY ITSELF WITHOUT ADDITION OF OTHER AGENTS.
References Cited (Backward Citations)
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US1978953A
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US2152520A
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US2397193A
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US2491789A
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FR1016620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |