US4589997A
Expired / Lapsed
US
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Process for preparing colloidal solution of antimony pentoxide
Assignee: Nissan Chemical Corp
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Filing: 1984-08-03
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Granted: 1986-05-20
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Expires: 2004-08-03
Abstract
Abstract A process for preparing an antimony pentoxide sol, which comprises dispersing sodium antimonate in water, reacting the sodium antimonate with a monovalent or divalent inorganic acid added in a stoichiometrical amount of 0.7 time to 5 times the amount of the sodium antimonate to form the sodium salt of said inorganic acid and an antimony pentoxide gel, separating and water washing said gel, dispersing said gel in water, and peptizing said gel dispersed in water by adding an organic base in an amount to provide a stoichiometrical amount of base / Sb 2 O 5 of from 0.03 to 1.
Inventors
- 👤 Yoshitane Watanabe
- 👤 Keitaro Suzuki
- 👤 Masayuki Teranishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:27
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0047; B82; B82Y; B82Y30/00; C01; C01G; C01G30/00; C01G30/004; C01G30/005; C01P; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/10; C01P2006/22; C01P2006/80
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
100 words
A process for preparing an antimony pentoxide sol, which comprises dispersing sodium antimonate in water, reacting the sodium antimonate with a monovalent or divalent inorganic acid added in a stoichiometrical amount of 0.7 time to 5 times the amount of the sodium antimonate to form the sodium salt of said inorganic acid and an antimony pentoxide gel, separating and water washing said gel, dispersing said gel in water, and peptizing said gel dispersed in water by adding an organic base in an amount to provide a stoichiometrical amount of base / Sb 2 O 5 of from 0.03 to 1.
Claim 2
Dependent Claim
100 words
A process for preparing an antimony pentoxide sol, which comprises dispersing sodium antimonate in water, reacting the sodium antimonate with a monovalent or divalent inorganic acid added in a stoichiometrical amount of 0.7 time to 5 times the amount of the sodium antimonate to form the sodium salt of said inorganic acid and an antimony pentoxide gel, separating and water washing said gel, dispersing said gel in water, and peptizing said gel dispersed in water by adding an organic base in an amount to provide a stoichiometrical amount of base / Sb 2 O 5 of from 0.03 to 1.
Claim 3
Dependent Claim
16 words
The process according to claim 1, wherein said sodium antimonate is a hydrate of sodium antimonate.
Claim 4
Dependent Claim
26 words
The process according to claim 1, wherein said inorganic acid is selected from the group consisting of hydrochloric acid, nitric acid, sulfuric acid and sulfamic acid.
Claim 5
Dependent Claim
27 words
The process according to claim 1, wherein the concentration of said sodium antimonate in the reaction mixture is 2 to 35% by weight as anhydrous antimony pentoxide.
Claim 6
Dependent Claim
27 words
The process according to claim 4, wherein the concentration of said sodium antimonate in the reaction mixture is 6 to 25% by weight as anhydrous antimony pentoxide.
Claim 7
Dependent Claim
21 words
The process according to claim 1, wherein the stoichiometrical amount of the acid / sodium antimonate is from 1 to 3.
Claim 8
Dependent Claim
36 words
The process according to claim 1, wherein the reaction to form said antimony pentoxide gel is carried out at a temperature ranging from a room temperature to 100° C. and for 1 hour to 15 hours.
Claim 9
Dependent Claim
36 words
The process according to claim 7, wherein the reaction to form said antimony pentoxide gel is carried out at a temperature ranging from a room temperature to 50° C. and for 1 hour to 10 hours.
Claim 10
Dependent Claim
20 words
The process according to claim 1, wherein said organic base is an amine, a quaternary ammonium hydroxide, or guanidine hydroxide.
Claim 11
Dependent Claim
25 words
The process according to claim 9, wherein said organic base is an amine selected from the group consisting of triethanolamine, tripropanolamine, diethanolamine, monoethanolamine and N-ethylaminoethanolamine.
Claim 12
Dependent Claim
26 words
The process according to claim 9, wherein said organic base is a quaternary ammonium hydroxide selected from the group consisting of tetraethanolammonium hydroxide and monomethyltriethanolammonium hydroxide.
Claim 13
Dependent Claim
31 words
The process according to claim 1, wherein said organic base is used for the peptization in a stoichiometrical amount of base / Sb 2 O 5 of from 0.07 to 0.5.
Claim 14
Dependent Claim
29 words
The process according to claim 1, wherein the peptization is carried out at a temperature ranging from room temperature to 150° C. and for 0.5 hour to 20 hours.
Claim 15
Dependent Claim
15 words
The process according to claim 13, wherein said temperature is from 50 to 150° C.
Claim 16
Dependent Claim
25 words
The process according to claim 13, wherein the amount of antimony pentoxide gel at the stage of peptization is from 2 to 55% by weight.
Claim 17
Dependent Claim
136 words
The process according to claim 1, wherein said inorganic acid is selected from the group consisting of hydrochloric acid, nitric acid, sulfuric acid and sulfamic acid; the concentration of said sodium antimonate in the reaction mixture is 2 to 35% by weight as anhydrous antimony pentoxide; the stoichiometrical amount of said acid / sodium antimonate is from 1 to 3; the reaction to form said antimony pentoxide gel is carried out at a temperature ranging from a room temperature to 100 C and for 1 hour to 15 hours; said organic base is used for the peptization in a stoichiometrical amount of base / Sb 2 O 5 of from 0.07 to 0.5; and the peptization is carried out at a temperature ranging from room temperature to 150 C and for 0.5 hour to 20 hours.
Claim 18
Dependent Claim
16 words
The process according to claim 16, wherein said sodium antimonate is a hydrate of sodium antimonate.
Claim 19
Dependent Claim
20 words
The process according to claim 16, wherein said organic base is an amine, a quaternary ammonium hydroxide, or quanidine hydroxide.
Claim 20
Dependent Claim
16 words
The process according to claim 18, wherein said sodium antimonate is a hydrate of sodium antimonate.
Claim 21
Dependent Claim
104 words
The process according to claim 18, wherein the concentration of said sodium antimonate in the reaction mixture is 6 to 25% by weight as anhydrous antimony pentoxide; the reaction to form said antimony pentoxide gel is carried out at a temperature ranging from a room temperature to 50 C and for 1 hour to 10 hours; said organic base is selected from the group consisting of triethanolamine, tripropanolamine, diethanolamine, monoethanolamine, N-ethylaminoethanolamine, tetraethanolammonium hydroxide and monomethyltriethanolammonium hydroxide; the peptization temperature is from 50 to 150 C; and the amount of antimony pentoxide gel at the stage of peptization is from 2 to 55% by weight.
Claim 22
Dependent Claim
16 words
The process according to claim 20, wherein said sodium antimonate is a hydrate of sodium antimonate.
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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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |