Benzopyran colorants, method of manufacture, and method of use

Details Benzopyran colorants, method of manufacture, and method of use Benzopyran colorants, method of manufacture, and method of use

2007-09-18

2007-09-18

Aulakh, Charanjit S. (Department: 1625)

Compositions

Organic luminescent material containing compositions

Synthetic resin containing

C546S048000, C252S301210

Reexamination Certificate

active

11289159

ABSTRACT:
A compound of Formula (I)wherein X is hydrogen or a radical of Formula (II), R1independently at each occurrence is a C1–C20aliphatic radical, a C3–C10cycloaliphatic radical, or a C3–C10aromatic radical; R2, R3, R4and R5are independently at each occurrence a halogen, a nitro group, a cyano group, a hydroxy group, a C1–C20aliphatic radical, a C3–C20cycloaliphatic radical, or a C6–C20aromatic radical; and “n”, “q”, and “p” are each independently integers having a value of 0 to 3, and “m” is an integer having a value of 0 to 4.

REFERENCES:
patent: 3880869 (1975-04-01), Scheuermann et al.
patent: 5470502 (1995-11-01), Hahn et al.
patent: 5840817 (1998-11-01), Shim et al.
patent: 42090 (1983-12-01), None
EP0042090; Publication Date Dec. 23, 1981; (translation of abstract only).
JP 06-299111; Publication Date Oct. 25, 1994 (translation of abstract only).
JP 06-316649; Publication Date Nov. 15, 1994 (translation of abstract only).

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