Indole compound and use of the same
AssigneeOrient Chemical Industries, Ltd.
InventorMasahiro Otsuka
Life of this patent
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Abstract
Disclosed is a novel UV light absorbing compound which can preferably be employed in the art of colored molding plastics, resin films, heat-sensitive transfer materials, liquid crystal display materials, color photographs and the like, and method for producing thereof. The UV light absorbing compound is characterized by the general formula: ##STR1## wherein R.sup.1 represents linear or branched alkyl or aralkyl group, and R.sup.2 represents --CN or --COOR.sup.3, wherein R.sup.3 represents substituted or unsubstituted alkyl or aralkyl group.
Claims4
A UV light absorber composition comprising an effective UV wavelength absorbing amount of an indole compound of the general formula:
- ##STR16## wherein R.sup.1 represents a linear or branched alkyl or aralkyl group, and R.sup.2 represents --CN or --COOR.sup.3, wherein R.sup.3 a linear or branched alkyl or aralkyl group having 1-20 carbon atoms, a .beta.-cyanoethyl group, a .beta.-chloroethyl group, a hydroxyalkyl group having 1-20 carbon atoms and an alkoxyalkyl group having 1-20 carbon atoms, as the active ingredient and a carrier acceptable for said UV light absorber composition.
Dependencies are inferred from the claim text.