US3929666A
Expired / Lapsed
US
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Process for preparing basic aluminum salt solution
Assignee: Taki Chemical Co Ltd
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Filing: 1974-04-02
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Granted: 1975-12-30
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Expires: 1994-04-02
Abstract
Abstract The present invention relates to a process for preparing a stable solution of a basic aluminum salt represented by the formula: Alm(OH)nX3m n 2k(SO4)k WHEREIN X denotes Cl or NO3 , k, m and n are respective positive indices, 3m > n + 2k, the basicity ((n/3m) X 100) is 30 to 70% and k/m 0.01 to 0.3, characterized by mixing a watersoluble sulfate or a solution containing SO4, a solution containing Al and X and a sodium or potassium aluminate solution at a temperature below 40*C so as to form a gel and then keeping the entire mixture at 50* to 80*C so that the gel is dissolved to give a basic aluminum salt solution.
Inventors
- 👤 Yoshikazu Aiba
- 👤 Takaki Furumori
- 👤 Shozo Shinpo
- 👤 Kaoru Funabiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:42
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/68; C01F7/74; C01F7/78; C01F7/786; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; C02F1/5245
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
15 words
A PROCESS FOR PREPARING A SOLUTION OF THE BASIC ALUMINUM SALT REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
15 words
A PROCESS FOR PREPARING A SOLUTION OF THE BASIC ALUMINUM SALT REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
109 words
A process for preparing a stable solution of the basic aluminum salt represented by the formula Alm(OH)nX3m n 2k(SO4)k wherein X denotes C or NO3 , k, m and n are respective positive indices, 3m > n + 2k, the basicity ((n/3m) X 100) is 30 to 70% and k/m 0.01 to 0.3, which solution is stable against precipitation, characterized by mixing a solution containing Al , X and SO4 and a sodium or potassium aluminate solution at a temperature below 40*C to form a gel and then keeping the entire mixture at 50* to 80*C so that said gel is dissolved to give a basic aluminum salt solution.
Claim 4
Dependent Claim
109 words
A process for preparing a stable solution of the basic aluminum salt represented by the formula Alm(OH)nX3m n 2k(SO4)k wherein X denotes C or NO3 , k, m and n are respective positive indices, 3m > n + 2k, the basicity ((n/3m) X 100) is 30 to 70% and k/m 0.01 to 0.3, which solution is stable against precipitation, characterized by mixing a solution containing Al , X and SO4 and a sodium or potassium aluminate solution at a temperature below 40*C to form a gel and then keeping the entire mixture at 50* to 80*C so that said gel is dissolved to give a basic aluminum salt solution.
Claim 5
Dependent Claim
34 words
A process for preparing a stable solution of the basic aluminum salt according to claim 2 wherein the Al2O3 concentration of said solution containing Al X and SO4 is 5 to 15% by weight.
Claim 6
Dependent Claim
21 words
A process for preparing a stable solution of the basic aluminum salt according to claim 3 wherein the gram equivalent ratio,
Claim 7
Dependent Claim
21 words
A process for preparing a stable solution of the basic aluminum salt according to claim 2 wherein the gram equivalent ratio,
Claim 8
Dependent Claim
48 words
A process for preparing a stable solution of the basic aluminum salt according to claim 2 wherein the molar ratio of the sodium or potassium to aluminum of said sodium or potassium aluminate solution is 1.1 to 2.0 and its Al2O3 concentration is 1 to 15% by weight.
Claim 9
Dependent Claim
109 words
A process for preparing a stable solution of the basic aluminum salt represented by the formula Alm(OH)nX3m n 2k(SO4)k wherein X denotes Cl or NO3 , k, m and n are respective positive indices, 3m > n + 2k, the basicity ((n/3m) X 100) is 30 to 70% and k/m 0.01 to 0.3, which solution is stable against precipitation, characterized by mixing a solution containing Al and X and a sodium or potassium aluminate solution containing SO4 at a temperature below 40*C to form a gel and then keeping the entire mixture at 50* to 80*C so that said geel is dissolved to give a basic aluminum salt solution.
Claim 10
Dependent Claim
109 words
A process for preparing a stable solution of the basic aluminum salt represented by the formula Alm(OH)nX3m n 2k(SO4)k wherein X denotes Cl or NO3 , k, m and n are respective positive indices, 3m > n + 2k, the basicity ((n/3m) X 100) is 30 to 70% and k/m 0.01 to 0.3, which solution is stable against precipitation, characterized by mixing a solution containing Al and X and a sodium or potassium aluminate solution containing SO4 at a temperature below 40*C to form a gel and then keeping the entire mixture at 50* to 80*C so that said geel is dissolved to give a basic aluminum salt solution.
Claim 11
Dependent Claim
33 words
A process for preparing a stable solution of the basic aluminum salt according to claim 7 wherein the Al2O3 concentration of said solution containing Al and X is 5 to 15% by weight.
Claim 12
Dependent Claim
21 words
A process for preparing a stable solution of the basic aluminum salt according to claim 5 wherein the chemical equivalent ratio,
Claim 13
Dependent Claim
21 words
A process for preparing a stable solution of the basic aluminum salt according to claim 7 wherein the gram equivalent ratio,
Claim 14
Dependent Claim
59 words
A process for preparing a stable solution of the basic aluminum salt according to claim 7 wherein the molar ratio of the sodium or potassium to aluminum of said sodium or potassium aluminate solution containing SO4 is 1.1 to 2.0, its Al2O3 concentration is 1 to 15% by weight and its SO4 concentration is 1 to 10% by weight.
References Cited (Backward Citations)
US3497459A
Cited
US3544476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |