US3864142A
Expired / Lapsed
US
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Metal oxide sols
Assignee: ChampionX LLC
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Filing: 1973-01-12
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Granted: 1975-02-04
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Expires: 1993-01-12
Abstract
Abstract A simple process for preparing metallic oxide coated silica sols and pure metallic oxide sols involves dispersing a metallic chloride and the sol, treating with an anion exchange resin, and recovering the product.
Inventors
- 👤 James F Kovarik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:28
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/50; D21H21/52; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0008; B01J13/0017; B01J20/00; B01J20/02; B01J20/0203; B01J20/0211; B01J20/0218; B01J20/0225; B01J20/0229; B01J20/0248; B01J20/0274; B01J20/0288; B01J20/06; B01J20/10; B01J20/103; B01J20/28; B01J20/28002; B01J20/28004; B01J20/28054; B01J20/28057; B01J20/30; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3234; B01J20/3236; B01J37/00; B01J37/30; C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146; C01B33/149; C25; C25D; C25D5/00; C25D5/02; C25D5/022; D21H19/00; D21H19/36; D21H19/38; D21H19/385; D21H19/40; Y; Y10; Y10S; Y10S516/00; Y10S516/924; Y10S516/928
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
27 words
The process of claim 1 wherein the metallic chloride is selected from the group consisting of aluminum chloride, ferric chloride, chromium chloride, titanium tetrachloride, and titanium trichloride.
Claim 2
Dependent Claim
15 words
The process of claim 1 wherein the anion exchange resin is in the bicarbonate form.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein the reaction product is treated with an anion exchange resin until the pH has risen two units.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein the metallic oxide coated silica sol product contains from 5 to 40 percent by weight solids.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |