Patent US2572436A successfully refreshed from Google Patents.
US3922356A
Expired / Lapsed
US
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Sulfite catalyzed aluminum tannage of collagen casing
Assignee: Continental Group Inc
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Filing: 1974-04-18
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Granted: 1975-11-25
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Expires: 1994-04-18
Abstract
Abstract This invention relates to an improvement in a process for tanning an edible collagen sausage casing with an aluminum tanning agent which comprises catalyzing the rate of tanning of the collagen by employing a sulfito-aluminum complex rendered partially basic as the aluminum tanning agent.
Inventors
- 👤 Mauj A Cohly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
IN A PROCESS FOR PRODUCING A TUBULAR COLLAGEN SAUSAGE CASING WHICH COMPRISES THE STEPS OF EXTRUDING A SLURRY OF FINELY DIVIDED COLLAGEN IN WATER FOR FORMING A TUBE, COAGULATING THE EXTRUDED TUBE IN A COAGULATING BATH CONTAINING A COAGULATING SALT, TANNING THE COAGULATED TUBE IN A TANNING BATH CONTAINING AN ALUMINUM TANNING AGENT, AND DRYING THE ALUMINUM TANNED TUBE, THE IMPROEMENT FOR CATALYZING THE RATE OF TANNING OF SAID COLLAGEN TUBE BY THE ALUMINUM IN SAID ALUMINUM TANNING AGENT WHICH COMPRISES EMPLOYING A SULFITO-ALUMINUM COMPLEX, CONTAINING A PROPORTION OF SULFITE SUFFICIENT TO SATISFY ONE-SIXTH TO ONE-THIRD EQUIVALENTS SUFLITE BASED ON THE ALUMINUM, AS SAID ALUMINUM TANNING AGENT.
Claim 2
Dependent Claim
107 words
IN A PROCESS FOR PRODUCING A TUBULAR COLLAGEN SAUSAGE CASING WHICH COMPRISES THE STEPS OF EXTRUDING A SLURRY OF FINELY DIVIDED COLLAGEN IN WATER FOR FORMING A TUBE, COAGULATING THE EXTRUDED TUBE IN A COAGULATING BATH CONTAINING A COAGULATING SALT, TANNING THE COAGULATED TUBE IN A TANNING BATH CONTAINING AN ALUMINUM TANNING AGENT, AND DRYING THE ALUMINUM TANNED TUBE, THE IMPROEMENT FOR CATALYZING THE RATE OF TANNING OF SAID COLLAGEN TUBE BY THE ALUMINUM IN SAID ALUMINUM TANNING AGENT WHICH COMPRISES EMPLOYING A SULFITO-ALUMINUM COMPLEX, CONTAINING A PROPORTION OF SULFITE SUFFICIENT TO SATISFY ONE-SIXTH TO ONE-THIRD EQUIVALENTS SUFLITE BASED ON THE ALUMINUM, AS SAID ALUMINUM TANNING AGENT.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein a sulfite providing material is added to the coagulating bath or the tanning bath containing the aluminum tanning agent in an amount sufficient for forming said sulfite-aluminum complex.
Claim 4
Dependent Claim
60 words
The process of claim 2 wherein said aluminum tanning agent is employed in said aluminum tanning bath in a proportion of from about 10 - 20% by weight for providing from about 0.5 - 5% aluminum based on the weight of the collagen in the collagen casing, and said bath contains about 0.25 - 2.0% wt. of said sulfite-providing material.
Claim 5
Dependent Claim
28 words
The process of claim 3 wherein said sulfite providing material is selected from the group consisting of alkali metal sulfites, ammonium sulfite, alkali metal bisulfites, and ammonium bisulfite.
Claim 6
Dependent Claim
13 words
The process of claim 4 wherein said alkali metal sulfite is sodium sulfite.
References Cited (Backward Citations)
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US3558262A
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US3525628A
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US3833746A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |