US4460655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
TiO2 Pigment bearing a coating with fluoride ions and laminate and coating based thereon
Assignee: EIDP Inc
•
Filing: 1983-04-04
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Granted: 1984-07-17
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Expires: 2003-04-04
Abstract
Abstract A pigment of TiO 2 particles coated with alumina and having associated therewith fluoride ions or fluoride compounds, can be used to prepare paper laminates having a high degree of lightfastness.
Inventors
- 👤 Howard W. Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:06
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/69; C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; D21H27/00; D21H27/18; D21H27/22; D21H27/26; D21H27/28; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
30 words
A cerium ion-free pigment of rutile TiO 2 particles bearing coatings which comprise alumina, the pigment having associated therewith 0.05-2%, by weight of the TiO 2 , of fluoride ions.
Claim 2
Dependent Claim
30 words
A cerium ion-free pigment of rutile TiO 2 particles bearing coatings which comprise alumina, the pigment having associated therewith 0.05-2%, by weight of the TiO 2 , of fluoride ions.
Claim 3
Dependent Claim
39 words
A pigment of rutile TiO 2 particles bearing coatings which comprise alumina, the pigment having associated therewith 0.05-5%, by weight of the TiO 2 , of Na.sub.7 Ce.sub.6 F.sub.31 K.sub.7 Ce.sub.6 F.sub.31 Li.sub.7 Ce.sub.6 F.sub.31 or (NH.sub.4).sub.7 Ce.sub.6 F.sub.31.
Claim 4
Dependent Claim
39 words
A pigment of rutile TiO 2 particles bearing coatings which comprise alumina, the pigment having associated therewith 0.05-5%, by weight of the TiO 2 , of Na.sub.7 Ce.sub.6 F.sub.31 K.sub.7 Ce.sub.6 F.sub.31 Li.sub.7 Ce.sub.6 F.sub.31 or (NH.sub.4).sub.7 Ce.sub.6 F.sub.31.
Claim 5
Dependent Claim
16 words
A paper laminate comprising paper and a pigment according to claim 1 in a rigid matrix.
Claim 6
Dependent Claim
16 words
A paper laminate comprising paper and a pigment according to claim 2 in a rigid matrix.
Claim 7
Dependent Claim
19 words
A coating composition comprising (a) pigment according to claim 1, (b) a film-forming material, and (c) a liquid carrier.
Claim 8
Dependent Claim
19 words
A coating composition comprising (a) pigment according to claim 2, (b) a film-forming material, and, (c) a liquid carrier.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |