US3627684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of washing bleaching and purification agents
Assignee: Evonik Operations GmbH
•
Filing: 1969-01-22
•
Granted: 1971-12-14
•
Expires: 1989-01-22
Abstract
Abstract A washing, bleaching and cleansing agent containing an active oxygen-containing compound of a salt of boric acid is prepared by adding the active oxygen carrier to a slurry of the active washing substances, washing aids and additives shortly before introduction into a spray drier.
Inventors
- 👤 Horst Pistor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:07
CPC Classifications
C; C11; C11D; C11D11/00; C11D11/02; C11D3/00; C11D3/39; C11D3/3902; F; F01; F01P; F01P3/00; F01P3/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
59 words
A process according to claim 1 wherein the slurry consists essentially of the detergent, active oxygen compound, a phosphate builder and a sulfate additive, the detergent is an anionic detergent, the slurry has a temperature of 80* C, the entrance temperature of the spray drier is 100 to 600* C. and the exit temperature is 50 to 300* C.
Claim 2
Dependent Claim
17 words
A process according to claim 1 wherein the components of the active oxygen compound are introduced separately.
Claim 3
Dependent Claim
17 words
A process according to claim 1 wherein the components of the active oxygen compound are introduced together.
Claim 4
Dependent Claim
35 words
A process according to claim 1 wherein the boric acid salt is mixed into the slurry initially as a stable basic component and adding the active oxygen carrier to the slurry shortly before the spraying.
Claim 5
Dependent Claim
15 words
A process according to claim 5 wherein a stabilizer is added to the oxygen carrier.
Claim 6
Dependent Claim
33 words
A process according to claim 1 wherein the active oxygen compound contains sodium perborate, sodium metaborate is present in the slurry and hydrogen peroxide is introduced into the slurry shortly before the spraying.
Claim 7
Dependent Claim
53 words
A process according to claim 1 wherein the active oxygen compound contains sodium perborate and the slurry contains either the borate component or the alkali component of sodium meta borate and the other of the borate or alkali component is added together with the hydrogen peroxide to the slurry shortly before the spraying.
Claim 8
Dependent Claim
32 words
A process according to claim 1 wherein the active oxygen compound contains perborax, sodium tetraborate is present in the slurry and hydrogen peroxide is introduced into the slurry shortly before the spraying.
Claim 9
Dependent Claim
29 words
A process according to claim 1 wherein the active oxygen compound contains perborax and sodium tetraborate as well as hydrogen peroxide are introduced into the slurry shortly before spraying.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |