Daylight fluorescent pigments

Details Daylight fluorescent pigments Daylight fluorescent pigments

1974-12-06

1976-02-17

Tung, T.

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

106 23, 106288B, 260281R, C09K 1106, C09D 1100

Patent

active

039390934

ABSTRACT:
A daylight fluorescent pigment based on condensation resins which contain a compound of the formula ##SPC1##
In which R.sub.1 is hydroxyalkyl of 1-8 carbon atoms or unsubstituted or substituted phenyl, carboxylic acid amide, cyano, nitro, sulfonic acid amide, alkylsulfone of 1-6 carbon atoms, acetylamino or unsubstituted or substituted benzoylamino or the triazolyl or benzimidazolyl radical, R.sub.2 is a straight-drained or branched alkylene radical of 1-8 carbon atoms which may contain as a bridging member between two alkylene moieties the phenylene or cyclohexylene radical or an oxygen or cycloalkylene and zis 1, 2 or 3. Compared with known pigment dyestuffs of the naphthalic acid imide series they have the advantage that they can be prepared with a dyestuff which is technically obtainable in an easy way. The daylight fluorescent pigments of this invention have a very good fastness to bleeding, a very high tinctorial strength, an improved fluorescence intensity and a very good brilliance. They are advantageously suited for the dyeing of lacquers and varnishes, printing pastes, inks, and plastic materials.

REFERENCES:
patent: 3455837 (1969-07-01), Maeder et al.
patent: 3741907 (1973-06-01), Beyerlin
patent: 3753921 (1973-08-01), Noetzel et al.
patent: 3769229 (1973-10-01), Noetzel
patent: 3785989 (1974-01-01), Noetzel et al.
patent: 3795628 (1974-03-01), Noetzel
patent: 3812051 (1974-05-01), Merkle
patent: 3812053 (1974-05-01), Noetzel
patent: 3812054 (1974-05-01), Noetzel et al.

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