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1 381 933

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A1

(51)

IPC

(21) (22)

Application

4059555/04, 1986-04-23

(22)

Actual filing date

1986-04-23

(45)

Published

1998-10-27

(72)

Inventor

Bojko I.I.Bojko T.N.Kovalenko N.Ju.Orlova L.I.Orlov I.G.

THIAPYRILIUM SALTS AS SENSITIZERS FOR ELECTROPHOTOGRAPHIC MATERIALS BASED ON POLY-N-EPOXYPROPYLCARBAZOLE EXHIBITING PANCHROMATIC SENSITIVITY Russian patent published in 1998 - IPC

Abstract SU 1381933 A1

FIELD: light-sensitive materials. SUBSTANCE: heterocyclic compounds, in particular, thiapyrilium salts with general formula , where at n= o, R1 is phenyl, 2-naphtyl, or methyl; R2 4-fluoro-, 4-chloro-, 4-methoxy-, 4-dimethylamino-, or 4- ethoxyphenyl; and R3 phenyl, 2-naphtyl, or ethoxyphenyl; at n= 1, R1 and R2 are 4-ethoxyphenyl and R3 is 4-methoxyphenyl, can be used as sensitizers for panchromatically active electrophotographic materials based on poly-N-epoxypropylcarbazole to enhance panchromatic activity of electrophotographic material in the region 400-700 nm and/or increase general light sensitivity. Thiapyrilium salts are prepared by dissolving suitable pyrilium tetrafluoroborate derivatives in acetone followed by adding sodium sulfide and tetrafluoroboric acid. EFFECT: increased light sensitivity. 2 tbl

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SU 1 381 933 A1

Authors

Bojko I.I.

Bojko T.N.

Kovalenko N.Ju.

Orlova L.I.

Orlov I.G.

Dates

1998-10-27—Published

1986-04-23—Filed

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