Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-02-07
2006-02-07
Desai, Rita (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
06995266
ABSTRACT:
An anthrapyridone composition of the formula:is disclosed, where “A” and “B” are independently selected from substituted or unsubstituted cyclic ketone groups having from about 10 to about 20 ring carbon atoms; “a” is an integer having a value from 0-4, R1-R4are monovalent substituents; with the proviso that when “a” is 0, R1is selected from the group consisting of a hydrogen, an alkyl group, a secondary amino group and an aminosulphonyl group; and R2-R4are substituents selected form the group consisting of a hydroxyl group, an aliphatic group, an aromatic group, a heterocyclic group, a halogen atom, a cyano group, a carbonyl containing group, an amino group and a sulphonyl-containing group. The anthrapyridones are useful as thermally stable colorants for producing colored polymer resins and articles that require high temperature polymer processing conditions.
REFERENCES:
patent: 2204741 (1940-06-01), Wuertz et al.
patent: 4182885 (1980-01-01), Bunes
patent: 4381185 (1983-04-01), Swanson et al.
patent: 4386206 (1983-05-01), Wingard, Jr. et al.
patent: 5132437 (1992-07-01), Aslam et al.
patent: 2003/0051633 (2003-03-01), Blease et al.
patent: 194253 (1908-01-01), None
patent: 1448090 (1966-08-01), None
patent: 1047089 (1966-11-01), None
patent: 1047297 (1966-11-01), None
patent: 49-75652 (1974-07-01), None
patent: 53-68234 (1978-06-01), None
patent: 57-10149 (1982-01-01), None
M. V. Kazankov et al., “The Chemistry of Petrocyclic Compounds”, Khimiya Geterotsiklicheskikh Soedinenii (1972), (12), pp. 1651-1655.
Dhalla Adil Minoo
Shankarling Ganapati Subray
Sivakumar Krishnamoorthy
Desai Rita
General Electric Company
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