US3615809A
Expired / Lapsed
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Compacted pigment compositions
Assignee: Dow Chemical Co
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Filing: 1968-09-26
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Granted: 1971-10-26
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Expires: 1988-09-26
Abstract
Abstract The invention relates to pigmented or colored thermoplastic polymers and pertains especially to compacted pigment compositions that are readily dispersed in thermoplastic polymers to make uniformly colored or pigmented polymer articles.
Inventors
- 👤 Floyd B Nagle
- 👤 Kenneth R Hock
- 👤 Winfield Scott Haynes Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/22; C; C08; C08K; C08K9/00; C08K9/04; C09; C09B; C09B67/00; C09B67/0071; C09B67/0092; C09C; C09C3/00; C09C3/006; C09C3/04; C09C3/045; C09C3/08; C01; C01P; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
A composition as claimed in claim 1, wherein the metal salt of the fatty acid is zinc stearate.
Claim 2
Dependent Claim
82 words
A compacted pigment composition consisting essentially of from 60 to 95 percent by weight TiO2, from 40 to 5 percent by weight of zinc stearate and from 5 to 20 percent by weight of stearic acid, with the proviso that said composition consists of at least 15 percent by weight of zinc stearate and stearic acid, which composition has been compacted under pressure of at least about 10 tons per square inch into a Friable cohered mass not exceeding 0.25 inch thick.
Claim 3
Dependent Claim
67 words
A compacted pigment composition consisting essentially of from 60 to 95 percent by weight of an insoluble finely divided pigment, from 40 to 5 percent by weight of zinc oxide and behenic acid in amount corresponding to from about 5 percent less than, to about 20 percent greater than, a chemically equivalent amount of said behenic acid to react with said zinc oxide and form zinc behenate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |