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Application

4836431/12, 1990-06-07

(22)

Actual filing date

1990-06-07

(45)

Published

1995-05-27

(72)

Inventor

Perel'Man L.A.Bojko I.I.Kostenko L.I.Grebenjuk S.A.Orlova L.I.Koshelev K.K.Kotelenets M.I.Bojko T.N.

METHOD OF PREPARING PHOTOSENSITIVE COMPOSITION FOR ELECTROPHOTOGRAPHIC MATERIAL Russian patent published in 1995 - IPC

Abstract SU 1822279 A1

FIELD: chemical-photographic industry. SUBSTANCE: method involves oligomerization of epoxy monomer of the general formula where R - or (R1-R2-H, Br, Cl; R3-H, Br) in the presence of 0.05-1.0 mol.% 2,4,6-trisubstituted pyrilium tetrafluoroborate of the general formula R′ where - phenyl, 4-bromophenyl, 4-ethoxyphenyl, 4-isoamylhydroxyphenyl, β-naphthyl; R″ - phenyl, 4-bromophenyl, 4-methoxyphenyl, 4-ethoxyphenyl, 4-isoamylhydroxyphenyl; R″′ - methyl, phenyl, 4-methoxyphenyl, β-naphthyl, b-(9-propylcarbazolyl-3)vinyl, b-(5-phenylfuryl-2)vinyl, and 3.9-9.7 mol.% boron trifluoride etherate in methylene chloride at 40±2 C following by liquid phase distillation off. EFFECT: improved method of composition preparing. 4 tbl

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SU 1 822 279 A1

Authors

Perel'Man L.A.

Bojko I.I.

Kostenko L.I.

Grebenjuk S.A.

Orlova L.I.

Koshelev K.K.

Kotelenets M.I.

Bojko T.N.

Dates

1995-05-27—Published

1990-06-07—Filed

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