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2 043 628

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IPC

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Application

5067114/04, 1992-09-28

(22)

Actual filing date

1992-09-28

(45)

Published

1995-09-10

(72)

Inventor

Eremina T.T.Malakhova I.A.Grigor'Ev V.I.Korshunova I.V.Vasilevskij Ju.A.Khachaturjan Eh.G.Lordkipanidze L.A.Zibzibadze L.B.

(73)

Holder

Arendnaja Organizatsija Nauchno-Issledovatel'Skij I Proektnyj Institut Khimiko-Fotograficheskoj Promyshlennosti

MATERIAL CHANGING COLOR BY CONTACT WITH WATER Russian patent published in 1995 - IPC

Abstract RU 2043628 C1

FIELD: analysis of materials. SUBSTANCE: material includes backing and water-active layer put on it. Layer contains polymer binder polyvinyl alcohol and/or polyvinylpyrrolidone and dark blue bromephenol dye with following proportion of components, per cent by mass: dye 5.0-55.0; binder being the balance. Material can additionally have polymer primer layer produced from polyvinyl alcohol and/or polyvinylpyrrolidone arranged between backing and water-active layer. EFFECT: expanded application field. 2 cl, 1 tbl

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RU 2 043 628 C1

Authors

Eremina T.T.

Malakhova I.A.

Grigor'Ev V.I.

Korshunova I.V.

Vasilevskij Ju.A.

Khachaturjan Eh.G.

Lordkipanidze L.A.

Zibzibadze L.B.

Dates

1995-09-10—Published

1992-09-28—Filed

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