US4508742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating beer to prevent chill haze and metal contamination
Assignee: PQ Corp
•
Filing: 1983-05-06
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Granted: 1985-04-02
•
Expires: 2003-05-06
Abstract
Abstract Inorganic chill-proofing and other agents that are used to process stable beer often contain metals such as iron and copper that are soluble in beer or other beverages. A small addition of magnesium silicate added to said chill-proofing agents, particularly silica hydrogel, substantially averts metal contamination in the beer.
Inventors
- 👤 John R. McLaughlin
- 👤 Elliot P. Hertzenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:23
CPC Classifications
C; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0408
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
A method of treating beer to prevent chill haze while averting metal contamination of the beer comprising the steps of: (a) contacting said beer with a combination of an inorganic chill-proofing agent and 0.2 to 6 pbw (parts by weight) of a porous, amorphous magnesium silicate for each 100 pbw of chill-proofing agent; (b) maintaining said contact for a time sufficient for said combination to adsorb the components of chill haze from the beer; and (c) separating the combination from the beer, said magnesium silicate having the following properties: ______________________________________
Properties of Magnesium Silicate
______________________________________
Mole Ratio MgO:SiO.sub.2
1:1.6 to 4.7
Surface Area (M.sup.2 /g)
30 to 600
Bulk Density Tamped (g/cc)
0.25 to 0.75
Weight loss 105° C. (wt %)
5 to 20
Ignition loss (wt %) 10 to 35
pH 5% wt in water 8.5 to 10.5
______________________________________
Claim 2
Independent Claim
140 words
A method of treating beer to prevent chill haze while averting metal contamination of the beer comprising the steps of: (a) contacting said beer with a combination of an inorganic chill-proofing agent and 0.2 to 6 pbw (parts by weight) of a porous, amorphous magnesium silicate for each 100 pbw of chill-proofing agent; (b) maintaining said contact for a time sufficient for said combination to adsorb the components of chill haze from the beer; and (c) separating the combination from the beer, said magnesium silicate having the following properties: ______________________________________
Properties of Magnesium Silicate
______________________________________
Mole Ratio MgO:SiO.sub.2
1:1.6 to 4.7
Surface Area (M.sup.2 /g)
30 to 600
Bulk Density Tamped (g/cc)
0.25 to 0.75
Weight loss 105° C. (wt %)
5 to 20
Ignition loss (wt %) 10 to 35
pH 5% wt in water 8.5 to 10.5
______________________________________
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein there is 0.3 to 3 pbw of magnesium silicate present for each 100 pbw of chill-proofing agent.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the beer is also contacted with a filter aid.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein the chill-proofing agent is a silica gel.
Claim 6
Dependent Claim
23 words
The process of claim 4 wherein there is 0.3 to 3 pbw of magnesium silicate present for each 100 pbw of silica gel.
Claim 7
Dependent Claim
50 words
The process of claim 5 wherein the silica gel is a hydrogel with a surface area of at least 700 m 2 /g, a mean pore diameter of 30 to 120 Å, an average particle size of 20 microns or less, and a loss on ignition of more than 50%.
Claim 8
Dependent Claim
24 words
The process of claim 6 wherein there is 0.5 to 2.5 pbw of magnesium silicate present for each 100 pbw of the silica hydrogel.
Claim 9
Independent Claim
137 words
A method of treating beer to prevent chill haze while averting metal contamination of the beer comprising the steps of: (a) contacting said beer with a combination of a silica gel and a porous, amorphous magnesium silicate, the amount of magnesium silicate being 0.2 to 6 pbw per 100 pbw of silica gel; (b) maintaining said contact for a time sufficient for said combination to adsorb chill-haze components from the beer; and (c) separating the combination from the beer; said magnesium silicate having the following properties. ______________________________________
Properties of Magnesium Silicate
______________________________________
Mole Ratio MgO:SiO.sub.2
1:1.6 to 4.7
Surface Area (M.sup.2 /g)
30 to 600
Bulk Density Tamped (g/cc)
0.25 to 0.75
Weight loss 105° C. (wt %)
5 to 20
Ignition loss (wt %)
10 to 35
pH 5% wt in water 8.5 to 10.5
______________________________________
Claim 10
Independent Claim
137 words
A method of treating beer to prevent chill haze while averting metal contamination of the beer comprising the steps of: (a) contacting said beer with a combination of a silica gel and a porous, amorphous magnesium silicate, the amount of magnesium silicate being 0.2 to 6 pbw per 100 pbw of silica gel; (b) maintaining said contact for a time sufficient for said combination to adsorb chill-haze components from the beer; and (c) separating the combination from the beer; said magnesium silicate having the following properties. ______________________________________
Properties of Magnesium Silicate
______________________________________
Mole Ratio MgO:SiO.sub.2
1:1.6 to 4.7
Surface Area (M.sup.2 /g)
30 to 600
Bulk Density Tamped (g/cc)
0.25 to 0.75
Weight loss 105° C. (wt %)
5 to 20
Ignition loss (wt %)
10 to 35
pH 5% wt in water 8.5 to 10.5
______________________________________
Claim 11
Dependent Claim
50 words
The method of claim 8 wherein the silica gel is a hydrogel with a surface area of at least 700 m 2 /g, a mean pore diameter of 30 to 120 Å, an average particle size of 20 microns or less, and a loss on ignition of more than 50%.
Claim 12
Dependent Claim
23 words
The process of claim 9 wherein there is 0.3 to 3 pbw of the magnesium silicate for each 100 pbw of the hydrogel.
Claim 13
Dependent Claim
24 words
The process of claim 9 where there is 0.5 to 2.5 pbw of magnesium silicate present for each 100 pbw of the silica hydrogel.
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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |