US4612138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable acidic and alkaline metal oxide sols
Assignee: Ecolab USA Inc
•
Filing: 1983-08-04
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Granted: 1986-09-16
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Expires: 2003-08-04
Abstract
Abstract A stable acidic and alkaline metal oxide sol is formed by hydrolyzing a metal salt precursor in the presence of a stabilizing component chosen from the group consisting of surfactants having an HLB of at least 8, dispersing carboxylate polymers, and mixtures thereof, then alkalizing by adding a water-soluble amine compound, preferably diethylaminoethanol.
Inventors
- 👤 Bruce A. Keiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:58
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0008; B01J13/0013; C01B; C01B13/00; C01B13/14; C01B13/32; C01G; C01G19/00; C01G19/02; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C01G25/00; C01G25/02; C01G39/00; C01G39/02; C01G49/00; C01G49/02; C01G49/06; C23; C23C; C23C18/00; C23C18/02; C23C18/12; C23C18/1204; C23C18/1208; C23C18/1216; C01P; C01P2006/00; C01P2006/40; C01P2006/60; C01P2006/80; C23C18/125; C23C18/1254
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A stable alkaline metal oxide sol having a pH of at least 8.0 containing from 1-50 weight percent M x O y , wherein: M is chosen from the group consisting of alkaline earth metals and transition metals; x is from 1-3; y is from 1-6; and a water-soluble stabilizing component chosen from the group consisting of water-soluble surfactants having an HLB greater than about 8.0, water-soluble dispersing carboxylate polymers and mixtures thereof, with the ratio of metal oxide to stabilizing component being within the range of 0.25:1 to about 20:1 and the pH of the alkaline metal oxide sol being produced by a water-soluble amine.
Claim 2
Dependent Claim
106 words
A stable alkaline metal oxide sol having a pH of at least 8.0 containing from 1-50 weight percent M x O y , wherein: M is chosen from the group consisting of alkaline earth metals and transition metals; x is from 1-3; y is from 1-6; and a water-soluble stabilizing component chosen from the group consisting of water-soluble surfactants having an HLB greater than about 8.0, water-soluble dispersing carboxylate polymers and mixtures thereof, with the ratio of metal oxide to stabilizing component being within the range of 0.25:1 to about 20:1 and the pH of the alkaline metal oxide sol being produced by a water-soluble amine.
Claim 3
Dependent Claim
20 words
The stable alkaline metal oxide sol of claim 1 wherein the water-soluble stabilizing component is a water-soluble dispersing carboxylate polymer.
Claim 4
Dependent Claim
25 words
The stable alkaline metal oxide sol of claim 1 wherein the water-soluble stabilizing component is an anionic surfactant having an HLB greater than about 8.0.
Claim 5
Dependent Claim
34 words
The stable alkaline metal oxide sol of claim 1 wherein the water-soluble stabilizing component is a mixture of a water-soluble dispersing carboxylate polymer and an anionic surfactant having an HLB greater than about 8.0.
Claim 6
Dependent Claim
24 words
The stable alkaline metal oxide sol of claim 1 wherein M is chosen from the group consisting of berylium, magnesium, calcium, strontium, and barium.
Claim 7
Dependent Claim
28 words
The stable alkaline metal oxide sol of claim 1 wherein M is chosen from the group consisting of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, and zinc.
Claim 8
Dependent Claim
23 words
The stable alkaline metal oxide sol of claim 1 wherein M is chosen from the group consisting of zirconium, molybdenum, tin, and antimony.
Claim 9
Dependent Claim
42 words
The stable alkaline metal oxide sol of claim 1 wherein the water-soluble amine is chosen from the group consisting of methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, n-propylamine, di-n-propylamine, tri-n-propylamine, n-butylamine, n-amylamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, hexamethylenetetramine, ethanolamine, diethylaminoethanol, ethylene diamine, and aminoethylethonalamine.
Claim 10
Dependent Claim
25 words
The stable alkaline metal oxide sol of claim 1 wherein the water-soluble amine is chosen from the group consisting of diethylaminoethanol, ethylene diamine, and aminoethylethanolamine.
Claim 11
Dependent Claim
15 words
The stable alkaline metal oxide sol of claim 6 wherein the water-soluble amine is diethylaminoethanol.
Claim 12
Dependent Claim
47 words
The stable alkaline metal oxide sol of claim 1 wherein the metal oxide is chosen from the group consisting of titania, tin oxide, zirconia, iron oxide, alumina, and molybdenum oxide, and the water-soluble amine is chosen from the group consisting of diethylaminoethanol, ethylenediamine, hexamethylene tetramine, and aminoethylethanolamine.
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |