US3676367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbent for beverages
Assignee: fur Brauerei-Industrie AG
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Filing: 1969-11-13
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Granted: 1972-07-11
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Expires: 1989-11-13
Abstract
Abstract The adsorbent based on montmorin minerals is preferably intended for the treatment of fermentable or fermented liquids, particularly of beer or wine and their precursors, and contains added, highly dispersed free silica, which has been produced in situ as non-gelatinous silica and which is localized between the layers of the clay mineral.
Inventors
- 👤 Karl J Raible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:30
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/131; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0408
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
58 words
A process for producing an adsorbent comprising mixing a montmorin mineral substance, an alkali metal silicate, a mineral acid and a soluble salt of a mineral acid whose cation is an alkali metal, an alkaline earth metal, aluminum or iron in water, filtering the mixture when the reaction has been completed, and washing the filter cake thus formed.
Claim 2
Dependent Claim
61 words
A process according to claim 2, characterized in that the montmorin mineral is suspended in an alkali metal silicate solution and this suspension and a solution of a mineral acid are separately charged at the same time into an electrolyte solution which contains alkali metal salts of mineral acids, while a pH value of 5-8 is maintained, whereafter silica is liberated.
Claim 3
Dependent Claim
72 words
A process according to claim 2, characterized in that the montmorin mineral is suspended in an alkali metal silicate suspension and this suspension is charged into a neutral or acid solutiOn of alkaline earth metal salts, aluminum salts or iron salts of mineral acid, which solution has a cation concentration which is approximately equivalent to that of the alkali metal silicate, and when the reaction has been completed, the silica is liberated.
Claim 4
Dependent Claim
61 words
A process according to claim 4, characterized in that the montmorin mineral substance is suspended in an alkali metal silicate suspension, the suspension is mixed with the acid solution of salts obtained by the acid activation treatment of clay minerals with mineral acids and, when the reaction has been completed, the silica is liberated by adding an equivalent amount of acid.
Claim 5
Dependent Claim
23 words
A process according to claim 4, characterized in that the clay-silicate product is aged before the silica is liberated from the insoluble silicate.
Claim 6
Dependent Claim
16 words
A process according to claim 6, characterized in that the aging is effected at elevated temperatures.
Claim 7
Dependent Claim
16 words
A process according to claim 4, characterized in that the silica is liberated at elevated temperatures.
Claim 8
Dependent Claim
14 words
A process according to claim 2, characterized in that raw montmorin clay is used.
Claim 9
Dependent Claim
14 words
A process according to claim 2, characterized in that acid-activated montmorin mineral is used.
Claim 10
Dependent Claim
33 words
A process according to claim 2, characterized in that a raw clay is suspended and the clay component is subjected to an acid activation treatment with acid when the silica has been liberated.
Claim 11
Dependent Claim
39 words
A process according to claim 2 characterized in that an expansion-promoting substance consisting essentially of an alkali metal salt of a mineral acid is added to the suspension of the raw montmorin clay in the alkali metal silicate solution.
Claim 12
Dependent Claim
59 words
A process according to claim 2, characterized in that the montmorin mineral is suspended in the mineral acid and this suspension and an alkali metal silicate solution are separately charged at the same time into an electrolyte solution which contains alkali metal salts of mineral acids while a pH value of 5-8 is maintained, and the silica is liberated.
Claim 13
Dependent Claim
23 words
A process according to claim 13, characterized in that the montmorin mineral is activated before it is suspended in the mineral acid solution.
Claim 14
Dependent Claim
81 words
A process according to claim 2, characterized in that the montmorin mineral is suspended in an acid or neutral solution of mineral acid salts of alkaline earth metals, aluminum or iron, an mineral acids, or in the solubilizing acid obtained after the activation of, an, alkali metal silicate solution is added to the suspension until a pH value of 5-8 is reached, and the silica is subsequently liberated from the insoluble silicate with the aid of an equivalent amount of acid.
Claim 15
Dependent Claim
23 words
A process according to claim 15, characterized in that the montmorin mineral is activated by a treatment with acid before it is suspended.
Claim 16
Dependent Claim
34 words
A process according to claim 2, characterized in that the raw end product is filtered off and the porous structure of the silica component is varied by washing with an acid or alkaline liquid.
Claim 17
Dependent Claim
29 words
A process according to claim 2 characterized by a final washing with a substance which forms a chelate with iron or aluminum ions in water or an acidic liquid.
Claim 18
Dependent Claim
18 words
A process according to claim 2, characterized in that the washed mineral-silica products are partly or completely dried.
Claim 19
Dependent Claim
22 words
A process according to claim 19, characterized in that the washed mineral is dried to a solids content of about 20-40 percent.
Claim 20
Dependent Claim
19 words
A process according to claim 2, characterized in that dry adsorbents or non-adsorbents are added to the moist mineral.
Claim 21
Dependent Claim
13 words
The process of claim 2, wherein the filter cake is dried and ground.
Claim 22
Dependent Claim
14 words
The process according to claim 4, characterized in that raw montmorin clay is used.
Claim 23
Dependent Claim
15 words
The process according to claim 4, characterized in that acid-activated montmorin mineral substance is used.
Claim 24
Dependent Claim
33 words
The process according to claim 4, characterized in that a raw clay is suspended and the clay component is subjected to an acid activation treatment with acid when the siliCa has been liberated.
Claim 25
Dependent Claim
39 words
The process according to claim 4, characterized in that an expansion-promoting substance consisting essentially of an alkali metal salt of a mineral acid is added to the suspension of the raw montmorin clay in the alkali metal silicate solution.
Claim 26
Dependent Claim
21 words
The process according to claim 13, characterized in that the montmorin mineral is activated after the silica has has been liberated.
Claim 27
Dependent Claim
36 words
The process according to claim 15, wherein the acid or neutral solution of mineral acid salts of alkaline earth metals, aluminum or iron is obtained by the acid activation treat-ment of clay minerals with mineral acids.
Claim 28
Dependent Claim
28 words
The process according to claim 15, characterized in that the montmorin mineral is activated by a treatment with acid after the silica has been liberated from the silicates.
Claim 29
Dependent Claim
17 words
The process according to claim 4 wherein the liberation of silica is accomplished at an elevated temperature.
Claim 30
Dependent Claim
35 words
The process according to claim 15, wherein after the alkaline metal silicate solution is added to the suspension so that a pH value of 5 to 8 is reached, the mineral silicate product is aged.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |