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2 091 862

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C1

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IPC

(21) (22)

Application

95118224/25, 1995-10-26

(22)

Actual filing date

1995-10-26

(45)

Published

1997-09-27

(72)

Inventor

Peredereeva S.I.Dolinkina T.R.Filippova T.V.Dorozhkina G.N.

(73)

Holder

Gosudarstvennyj Nauchnyj Tsentr Rossijskoj Federatsii

METHOD OF PROTECTING HOLOGRAMS WRITTEN IN SILVER HALIDE LAYERS Russian patent published in 1997 - IPC

Abstract RU 2091862 C1

FIELD: photographic industry. SUBSTANCE: invention relates to creating three-dimensional images on silver halide layers and, in particular, to their protection. This task is achieved by applying protective composition onto hologram surface consisting of (in wt %): amino-formaldehyde resin, 15.0-25.0; alkyd resin, 19.0-37.5; solvent, the balance; followed by hardening composition at 100-140 C. EFFECT: increased wear and water resistance of coating to 1500 kg/mcm and 360 min, respectively. 1 tbl

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RU 2 091 862 C1

Authors

Peredereeva S.I.

Dolinkina T.R.

Filippova T.V.

Dorozhkina G.N.

Dates

1997-09-27—Published

1995-10-26—Filed

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