Patent US4770813A successfully refreshed from Google Patents.
US4770813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing stable colloidal sols of antimony pentoxide in organic solvents
Assignee: Nissan Chemical Corp
•
Filing: 1986-11-24
•
Granted: 1988-09-13
•
Expires: 2006-11-24
Abstract
Abstract There is disclosed a process for preparing stable colloidal sols of antimony pentoxide in organic solvents which comprises the steps of adjusting an amount of an organic base in an aqueous colloidal solution of antimony pentoxide to, in terms of % by weight, 2 to 30% based on antimony pentoxide in the aqueous colloidal solution of antimony pentoxide; adding an organic acid in an amount of 0.2 to 20%; and replacing a dispersing medium of the colloidal solution from water to an organic solvent.
Inventors
- 👤 Yoshitane Watanabe
- 👤 Keitaro Suzuki
- 👤 Masayuki Teranishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:22
CPC Classifications
C; C01; C01G; C01G30/00; C01G30/004; C01G30/005; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0026; C09; C09C; C09C1/00; C09C1/0096; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/22; C01P2006/80; C01P2006/82; C01P2006/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A process for preparing stable colloidal sols of antimony pentoxide in organic solvents which comprises the steps of adjusting an amount of an organic base in an aqueous colloidal solution of antimony pentoxide to, in terms of % by weight, 2 to 30% based on antimony pentoxide; adding an organic acid in an amount of 0.2 to 20% by weight based on antimony pentoxide; and replacing the water dispersing medium of the colloidal solution with an organic solvent.
Claim 2
Dependent Claim
78 words
A process for preparing stable colloidal sols of antimony pentoxide in organic solvents which comprises the steps of adjusting an amount of an organic base in an aqueous colloidal solution of antimony pentoxide to, in terms of % by weight, 2 to 30% based on antimony pentoxide; adding an organic acid in an amount of 0.2 to 20% by weight based on antimony pentoxide; and replacing the water dispersing medium of the colloidal solution with an organic solvent.
Claim 3
Dependent Claim
39 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 1, wherein said organic base is selected from the group consisting of aliphatic amines, alicyclic amines, aralkyl amines, alkanol amines and aromatic amines.
Claim 4
Dependent Claim
126 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 1, wherein said organic acid is selected from the group consisting of alkylbenzenesulfonic acids having C 1 to C 15 alkyl group; alkylnaphthalenesulfonic acids having C 1 to C 15 alkyl group; alkylsulfonic acids having C 4 to C 18 alkyl group; alkylsulfates having C 4 to C 18 alkyl group; alkylpolyoxyethylenesulfates having C 4 to C 18 alkyl group where ethyleneoxide added mole number thereof being 1 to 5; mono- or dialkylphosphates; mono- or diarylphosphates; alkylarylphosphates; polyoxyethylene adducts of the above phosphates; monocarboxylic acids having 3 to 12 carbon atoms; aliphatic dicarboxylic acids; hydroxycarboxylic acids; aromatic carboxylic acids; and acids having sulfonyl group and carboxyl group in the structure.
Claim 5
Dependent Claim
25 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 1, wherein said organic solvent is hydrophilic organic solvents.
Claim 6
Dependent Claim
45 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 4, wherein the replacing method of the dispersing medium of the sol from water to the organic solvent is carried out by heating under reduced pressure or ordinary pressure.
Claim 7
Dependent Claim
41 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 4, wherein said hydrophilic organic solvent is selected from the group consisting of acid amides, lower alcohols, polyvalent alcohols, glycol ethers, cyclic ethers and dimethylsulfoxide.
Claim 8
Dependent Claim
25 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 1, wherein said organic solvent is hydrophobic organic solvents.
Claim 9
Dependent Claim
41 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 7, wherein the method of replacing the dispersing medium of the sol from water to the organic solvent is carried out by separation of solutions.
Claim 10
Dependent Claim
41 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 7, wherein said hydrophobic organic solvent is selected from the group consisting of aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, esters, halogenated hydrocarbons, ketones and ethers.
Claim 11
Dependent Claim
54 words
The process for preparing stable colloidal sols of antimony pentoxide in organic solvents according to claim 1, wherein when a gel is formed by addition of said organic base to said aqueous colloidal solution, the process comprises separating said gel, dispersing said gel in an organic solvent and removing remaining water from said gel.
References Cited (Backward Citations)
US3657179A
Cited
US4059540A
Cited
US3994825A
Cited
US4017418A
Cited
US4348301A
Cited
US4026819A
Cited
US4028266A
Cited
US4051069A
Cited
US4110247A
Cited
US4576921A
Cited
JPS6041536A
Cited
US4589997A
Cited
JPS60161731A
Cited
JPS60161729A
Cited
JPS60161730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |