Patent US4022632A successfully refreshed from Google Patents.
US4022632A
Expired / Lapsed
US
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Decreasing the photosensitivity of titanium IV dioxide
Assignee: Eastman Kodak Co
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Filing: 1976-07-02
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Granted: 1977-05-10
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Expires: 1996-07-02
Abstract
Abstract Disclosed are TiO 2 pigments treated to decrease their photosensitizing propensity and their tendency to degrade polymeric materials. Commercial TiO 2 pigments, both anatase and rutile, treated according to the present invention with manganous, cobaltous or cerous salts, particularly acetate, are effectively desensitized.
Inventors
- 👤 Gordon C. Newland
- 👤 Gether Irick, Jr.
- 👤 Thomas H. Larkins, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:28
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/08; C08; C08K; C08K9/00; C08K9/04; C09C1/00; C09C1/36; C09C1/3607; C09C1/3669; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
Titanium dioxide pigment having coated thereon a salt of the formula (R-CO 2 ) 2 Me where Me is Ce + 2 , Mn + 2 or Co + 2 and R is a linear or branched alkyl group having from 1 to 12 carbons, at a concentration to give from about 0.1% to about 20.0% by weight of the metal based on the weight of the pigment.
Claim 2
Dependent Claim
68 words
Titanium dioxide pigment having coated thereon a salt of the formula (R-CO 2 ) 2 Me where Me is Ce + 2 , Mn + 2 or Co + 2 and R is a linear or branched alkyl group having from 1 to 12 carbons, at a concentration to give from about 0.1% to about 20.0% by weight of the metal based on the weight of the pigment.
Claim 3
Dependent Claim
37 words
Titanium dioxide pigment having coated thereon the acetate salt of manganese, cobalt or cerium at a concentration to give from about 0.1% to about 20.0% by weight of the metal based on the weight of the pigment.
Claim 4
Dependent Claim
37 words
Titanium dioxide pigment having coated thereon the acetate salt of manganese, cobalt or cerium at a concentration to give from about 0.1% to about 20.0% by weight of the metal based on the weight of the pigment.
Claim 5
Dependent Claim
37 words
Polymeric material containing TiO 2 pigment having coated thereon sufficient acetate salt of manganese, cobalt, or cerium to give from about 0.1% to about 20.0% by weight of the metal based on the weight of the pigment.
Claim 6
Dependent Claim
37 words
Polymeric material containing TiO 2 pigment having coated thereon sufficient acetate salt of manganese, cobalt, or cerium to give from about 0.1% to about 20.0% by weight of the metal based on the weight of the pigment.
Claim 7
Dependent Claim
19 words
Cellulose acetate containing from about 0.01 to about 5.0% by weight of the treated TiO 2 of claim 1.
Claim 8
Dependent Claim
20 words
Cellulose acetate yarn containing from about 0.01 to about 5.0% by weight of the treated TiO 2 of claim 1.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |