US4065448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary alkyl substituted disazo pigments
Assignee: Novartis AG
•
Filing: 1975-12-10
•
Granted: 1977-12-27
•
Expires: 1995-12-10
Abstract
Abstract Disazo pigments of the formula ##STR1## in which A denotes a radical of the formulae ##STR2## wherein X 1 , Y 1 and Y 2 each denote hydrogen or chlorine, lower alkyl or lower alkoxy, X stands for branched alkyl having 3 to 9 carbon atoms, Y denotes hydrogen, halogen or lower alkyl, Y 3 denotes hydrogen or lower alkyl, Z is hydrogen, halogen, lower alkyl, lower alkoxy or lower carbalkoxy and n or 2 are useful for coloring plastics and lacquers in yellow shades having excellent fastness properties, especially fastness to weathering.
Inventors
- 👤 Willy Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:10
CPC Classifications
C; C09; C09B; C09B33/00; C09B33/02; C09B33/153; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/23; C08K5/235
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
38 words
A disazo pigment of the formula ##STR21## wherein R 3 is alkyl containing 2 to 6 carbon atoms, Y is hydrogen, chloro, or lower alkyl, Y 3 is hydrogen, or lower alkyl, and Z is hydrogen or chloro.
Claim 2
Dependent Claim
38 words
A disazo pigment of the formula ##STR21## wherein R 3 is alkyl containing 2 to 6 carbon atoms, Y is hydrogen, chloro, or lower alkyl, Y 3 is hydrogen, or lower alkyl, and Z is hydrogen or chloro.
Claim 3
Dependent Claim
11 words
The pigment as claimed in claim 1 of the formula ##STR22##
Claim 4
Dependent Claim
11 words
The pigment as claimed in claim 1 of the formula ##STR23##
Claim 5
Dependent Claim
11 words
The pigment as claimed in claim 1 of the formula ##STR24##
References Cited (Backward Citations)
US3413279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |