US2997450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of dulled or pigment-containing polyamides
Assignee: Glanzstoff AG
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Filing: 1958-05-05
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Granted: 1961-08-22
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Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 Taul Horst
- 👤 Indest Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:44
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J2377/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PROCESS FOR PREPARATION OF POLYAMIDE POLYMERS CONTAINING PIGMENTS HAVING A FLAKING OUT TENDENCY IN THE PRESENCE OF ELECTROLYTES WHICH COMPRISES DISPERSING A PIGMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM DIOXIDE, CARBON BLACK, AND A PHTHALOCYANINE DYE PIGMENT IN A MONOMERIC COMPOSITION WHICH IS POLYMERIZABLE TO FORM A POLYAMIDE CONDENSATION POLYMER, SAID MONOMERIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF AN APPROXIMATELY EQUIMOLAR MIXTURE OF AN ALIPHATIC DICARBOXYLIC ACID, HAVING 6-10 CARBONS AND TERMINAL CARBOXY GROUPS AND AN ALIPHATIC DIAMINE HAVING 4-8 CARBONS AND PRIMARY AMINO GROUPS, SALTS OF SAID DIAMINE AND DICARBOXY ACID, AMINO ALIPHATIC MONOCARBOXY ACIDS, AND LACTAMS, IN THE PRESENCE OF 0.5-30% BY WEIGHT, BASED ON THE PIGMENT, OF ALUMINUM PHOSPHATE, AND POLYMERIZING THE MONOMERIC COMPOSITION WITH THE PIGMENT AND ALUMINUM PHOSPHATE DISPERSED THEREIN AT POLYAMIDEFORMING TEMPERATURE AND PRESSURE.
Claim 2
Dependent Claim
133 words
A PROCESS FOR PREPARATION OF POLYAMIDE POLYMERS CONTAINING PIGMENTS HAVING A FLAKING OUT TENDENCY IN THE PRESENCE OF ELECTROLYTES WHICH COMPRISES DISPERSING A PIGMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM DIOXIDE, CARBON BLACK, AND A PHTHALOCYANINE DYE PIGMENT IN A MONOMERIC COMPOSITION WHICH IS POLYMERIZABLE TO FORM A POLYAMIDE CONDENSATION POLYMER, SAID MONOMERIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF AN APPROXIMATELY EQUIMOLAR MIXTURE OF AN ALIPHATIC DICARBOXYLIC ACID, HAVING 6-10 CARBONS AND TERMINAL CARBOXY GROUPS AND AN ALIPHATIC DIAMINE HAVING 4-8 CARBONS AND PRIMARY AMINO GROUPS, SALTS OF SAID DIAMINE AND DICARBOXY ACID, AMINO ALIPHATIC MONOCARBOXY ACIDS, AND LACTAMS, IN THE PRESENCE OF 0.5-30% BY WEIGHT, BASED ON THE PIGMENT, OF ALUMINUM PHOSPHATE, AND POLYMERIZING THE MONOMERIC COMPOSITION WITH THE PIGMENT AND ALUMINUM PHOSPHATE DISPERSED THEREIN AT POLYAMIDEFORMING TEMPERATURE AND PRESSURE.
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |