Patent US4285919A successfully refreshed from Google Patents.
US4285919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a metal-cation-deficient crystalline borosilicate
Assignee: BP Corp North America Inc
•
Filing: 1978-12-26
•
Granted: 1981-08-25
•
Expires: 1998-12-26
Abstract
Abstract There is disclosed a method for preparing a metal-cation-deficient crystalline borosilicate, which method comprises: (1) preparing a mixture containing an oxide of silicon that is substantially free of metal cations, an oxide of boron, ammonium hydroxide, alkylammonium cation or a precursor of an alkylammonium cation, and water; and (2) maintaining the mixture at suitable reaction conditions to effect formation of the borosilicate. There are also disclosed the crystalline borosilicate that results from the above-described method of preparation and uses of that borosilicate.
Inventors
- 👤 Marvin R. Klotz
- 👤 Stephen R. Ely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:21
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0254; B01J29/00; B01J29/86; B01J31/0239; C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/1009; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A method for preparing a metal-cationdeficient borosilicate, which method comprises: (1) preparing a mixture containing an oxide of silicon which is substantially free of metal cations, an oxide of boron, ammonium hydroxide, alkylammonium cation or a precursor of an alkylammonium cation, and water; and (2) maintaining said mixture at suitable reaction conditions to effect formation of said borosilicate, said reaction conditions comprising a reaction temperature within the range of about 25° C. (77° F.) to about 300° C. (572° F.), a pressure of at least the vapor pressure of water at the reaction temperature, and a reaction time that is sufficient to effect crystallization.
Claim 2
Independent Claim
104 words
A method for preparing a metal-cationdeficient borosilicate, which method comprises: (1) preparing a mixture containing an oxide of silicon which is substantially free of metal cations, an oxide of boron, ammonium hydroxide, alkylammonium cation or a precursor of an alkylammonium cation, and water; and (2) maintaining said mixture at suitable reaction conditions to effect formation of said borosilicate, said reaction conditions comprising a reaction temperature within the range of about 25° C. (77° F.) to about 300° C. (572° F.), a pressure of at least the vapor pressure of water at the reaction temperature, and a reaction time that is sufficient to effect crystallization.
Claim 3
Dependent Claim
29 words
The method of claim 1, wherein said reaction conditions include a pH of the slurry prior to crystallization that falls within the range of about 8.2 to about 11.5.
Claim 4
Dependent Claim
21 words
The method of claim 1, wherein said reaction time is within the range of about 8 hours to about 3 weeks.
Claim 5
Dependent Claim
79 words
The method of claim 1, wherein the composition of said mixture falls within the following ranges of mole ratios of initial reactants: SiO 2 /B 2 O 3 1-400 R 2 O/[R 2 O+(NH 4 ) 2 O] 0.01-1 NH 4 +/[NH 4 ++M n ] 0.7-1 NH 3 /SiO 2 0.02-20 H 2 O/NH 3 2-2,000 wherein R is an alkylamine or an alkylammonium cation, and M is at least one metal cation having a valence of n.
Claim 6
Dependent Claim
21 words
The method of claim 2, wherein said reaction time is within the range of about 8 hours to about 3 weeks.
Claim 7
Dependent Claim
79 words
The method of claim 2, wherein the composition of said mixture falls within the following ranges of mole ratios of initial reactants: SiO 2 /B 2 O 3 1-400 R 2 O/[R 2 O+(NH 4 ) 2 O] 0.01-1 NH 4 +/[NH 4 ++M n ] 0.7-1 NH 3 /SiO 2 0.02-20 H 2 O/NH 3 2-2,000 wherein R is an alkylamine or an alkylammonium cation, and M is at least one metal cation having a valence of n.
Claim 8
Dependent Claim
79 words
The method of claim 5, wherein the composition of said mixture falls within the following ranges of mole ratios of initial reactants: SiO 2 /B 2 O 3 1-400 R 2 O/[R 2 O+(NH 4 ) 2 O] 0.01-1 NH 4 +/[NH 4 ++M n ] 0.7-1 NH 3 /SiO 2 0.02-20 H 2 O/NH 3 2-2,000 wherein R is an alkylamine or an alkylammonium cation, and M is at least one metal cation having a valence of n.
Claim 9
Dependent Claim
79 words
The method of claim 5, wherein the composition of said mixture falls within the following ranges of mole ratios of initial reactants: SiO 2 /B 2 O 3 2-150 R 2 O/[R 2 O+(NH 4 ) 2 O] 0.01-1 NH 4 +/[NH 4 ++M n ] 0.9-1 NH 3 /SiO 2 0.02-8 H 2 O/NH 3 5-2,000 wherein R is an alkylamine or an alkylammonium cation, and M is at least one metal cation having a valence of n.
Claim 10
Dependent Claim
126 words
The method of claim 5, wherein said reaction temperature is within the range of about 90° C. (194° F.) to about 225° C. (437° F.), said pH is within the range of about 8.4 to about 11.2, said reaction time is within the range of about 1 day to about 12 days, and the composition of said mixture falls within the following ranges of mole ratios of initial reactants: SiO 2 /B 2 O 3 1-400 R 2 O/[R 2 O+(NH 4 ) 2 O] 0.01-1 NH 4 +/[NH 4 ++M n ] 0.7-1 NH 3 /SiO 2 0.02-20 H 2 O/NH 3 2-2,000 wherein R is an alkylamine or an alkylammonium cation, and M is at least one metal cation having a valence of n.
Claim 11
Dependent Claim
79 words
The method of claim 9, wherein the composition of said mixture falls within the following ranges of mole ratios of initial reactants: SiO 2 /B 2 O 3 2-150 R 2 O/[R 2 O+(NH 4 ) 2 O] 0.01-1 NH 4 +/[NH 4 ++M n ] 0.9-1 NH 3 /SiO 2 0.02-8 H 2 O/NH 3 5-2,000 wherein R is an alkylamine or an alkylammonium cation, and M is at least one metal cation having a valence of n.
References Cited (Backward Citations)
GB984502A
Cited
US3306922A
Cited
US3328119A
Cited
US3308069A
Cited
US3702886A
Cited
US4071377A
Cited
US3941871A
Cited
US4061724A
Cited
US4060590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |