US3043785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depigmenting polymeric compositions with aliphatic carboxylic acid settling aids
Assignee: Dow Chemical Co
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Filing: 1958-07-15
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Granted: 1962-07-10
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Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Palmer W Wright
- 👤 Bernie A Kozakiewicz
- 👤 Arthur F Roche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:17
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; C08J11/08; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
METHOD FOR DEPIGMENTING SYNTHETIC, THERMOPLASTIC POLYMERIC COMPOSITIONS WHICH COMPRISES DISSOLVING A PIGMENTED POLYMERIC COMPOSITION COSNTAINING AN INORGANIC PIGMENT THAT IS INSOLUBLE IN SOLVENTS IN WHICH SAID POLYMERIC COMPOSITION IS DISSOLVED IN A WATER-INSOLUBLE ORGANIC SOLVENT FOR SAID POLYMERIC COMPOSITION THAT IS NON-REACTIVE WITH SAID POLYMER AND SAID PIGMENTS AND IN WHICH SAID PIGMENT IS SOLUBLE; INTIMATELY MIXING EACH PART BY WEIGHT OF THE RESULTING ORGANIC SOLUTION CONTAINING THAE DISPERSED PIGMENT WITH BETWEEN ABOUT 1 AND 9 PARTS BY WEIGHT OF AN AQUEOUS PHASE THAT CONTAINS DISSOLVED THEREIN BETWEEN ABOUT 0.5 AND 50 WEIGHT PERCENT. BASED ON THE WEIGHT OF THE AQUEOUS PHASE, OF A WATERSOLUBLE ALIPHATIC CARBOXYLIC ACID THAT CONTAINS NOT MORE THAN ABOUT 5 CARBON ATOMS IN ITS MOLECULE; AND THEN PHYSICALLY SEPARATING THE ORGANIC POLYMERIC SOLUTION FROM THE SETTLED PIGMENT AND THE AQUEOUS PHASE.
Claim 2
Dependent Claim
136 words
METHOD FOR DEPIGMENTING SYNTHETIC, THERMOPLASTIC POLYMERIC COMPOSITIONS WHICH COMPRISES DISSOLVING A PIGMENTED POLYMERIC COMPOSITION COSNTAINING AN INORGANIC PIGMENT THAT IS INSOLUBLE IN SOLVENTS IN WHICH SAID POLYMERIC COMPOSITION IS DISSOLVED IN A WATER-INSOLUBLE ORGANIC SOLVENT FOR SAID POLYMERIC COMPOSITION THAT IS NON-REACTIVE WITH SAID POLYMER AND SAID PIGMENTS AND IN WHICH SAID PIGMENT IS SOLUBLE; INTIMATELY MIXING EACH PART BY WEIGHT OF THE RESULTING ORGANIC SOLUTION CONTAINING THAE DISPERSED PIGMENT WITH BETWEEN ABOUT 1 AND 9 PARTS BY WEIGHT OF AN AQUEOUS PHASE THAT CONTAINS DISSOLVED THEREIN BETWEEN ABOUT 0.5 AND 50 WEIGHT PERCENT. BASED ON THE WEIGHT OF THE AQUEOUS PHASE, OF A WATERSOLUBLE ALIPHATIC CARBOXYLIC ACID THAT CONTAINS NOT MORE THAN ABOUT 5 CARBON ATOMS IN ITS MOLECULE; AND THEN PHYSICALLY SEPARATING THE ORGANIC POLYMERIC SOLUTION FROM THE SETTLED PIGMENT AND THE AQUEOUS PHASE.
References Cited (Backward Citations)
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US2728725A
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US2744029A
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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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |