US3846324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergents
Assignee: Novartis AG
•
Filing: 1972-06-19
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Granted: 1974-11-05
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Expires: 1992-06-19
Abstract
Abstract The present invention provides dry, free-flowing detergents which contain chlorine donors and a fluorescent whitener the particles of which are encased by a water-soluble coating agent. The encased fluorescent whiteners have a greatly enhanced stability during the storage life of the detergent.
Inventors
- 👤 K Kleiber
- 👤 F Lohmann
- 👤 C Eckhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039; C11D3/00; C11D3/395; C11D3/40; C11D3/42; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2989
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
36 words
DRY, FREE-FLOWING DETERGENT COMPOSITIONS CONSISTING ESSENTIALLY OF A SURFACTANT, A CHLORINE DONOR WHICH RELEASES HYPOCHLORITE IONS ON CONTACT WITH WATER AND A FLUORESCENT WHITENER SELECTED FROM THE GROUP CONSISTING OF A DISTYRLDIPHENYL WHITENER OF THE FORMULA.
Claim 2
Dependent Claim
36 words
DRY, FREE-FLOWING DETERGENT COMPOSITIONS CONSISTING ESSENTIALLY OF A SURFACTANT, A CHLORINE DONOR WHICH RELEASES HYPOCHLORITE IONS ON CONTACT WITH WATER AND A FLUORESCENT WHITENER SELECTED FROM THE GROUP CONSISTING OF A DISTYRLDIPHENYL WHITENER OF THE FORMULA.
Claim 3
Dependent Claim
53 words
Dry, free-flowing detergent compositions according to claim 1, which contain an anionic surfactant as active detergent, chlorine donors, and a fluorescent whitener from the series of the distyryldiphenyls and stilbylnaphthotriazoles which contains at least one sulpho group (or the salts thereof) and the particles of which are encased by a water-soluble coating agent.
Claim 4
Dependent Claim
19 words
Detergent compositions according to claim 1, wherein the fluorescent whitener particles contain carboxymethyl cellulose as water-soluble organic coating agent.
Claim 5
Dependent Claim
24 words
Detergent compositions according to claim 1, wherein the fluorescent whitener particles contain carboxymethyl cellulose, hydroxypropyl cellulose or polyvinyl alcohol as water-soluble organic coating agent.
Claim 6
Dependent Claim
21 words
Detergent compositions according to claim 1, wherein the weight ratio between fluorescent whitener and coating agent is 4: 1 to 1:4.
Claim 7
Dependent Claim
13 words
Detergent compositions according to claim 1, which contain fluorescent whiteners of the formula
Claim 8
Dependent Claim
12 words
Detergent compositions according to claim 1, which contain 4-(naphtho-1'',2'':4,5-triazolyl-(2))-2-sulphostilbene as fluorescent whitener.
Claim 9
Dependent Claim
13 words
Detergent compositions accordinG to claim 6, which contain 4, 4''-bis-(2-sulphostyryl)-diphenyl as fluorescent whitener.
Claim 10
Dependent Claim
11 words
Detergents according to claim 6, which contain 4-(2-sulphostyryl)-4''-(2-chlorostyryl)-diphenyl as fluorescent whitener.
Claim 11
Dependent Claim
61 words
A process for the manufacture of products of the composition cited in claim 1, wherein a solution or dispersion of the fluorescent whitener in an aqueous solution of the coating agent is evaporated to dryness, the resulting dry preparation pasted into the detergent slurry which is then evaporated, and the resulting product is optionally granulated and the chlorine donor mixed therewith.
References Cited (Backward Citations)
US3401123A
Cited
US3573211A
Cited
US3706670A
Cited
US3627758A
Cited
US3640874A
Cited
US3681248A
Cited
US3646015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |