Global Patent Index - EP 0391170 A1

EP 0391170 A1 19901010 - Process for dyeing paper.

Title (en)

Process for dyeing paper.

Title (de)

Verfahren zum Färben von Papier.

Title (fr)

Procédé pour teindre le papier.

Publication

EP 0391170 A1 19901010 (DE)

Application

EP 90105512 A 19900323

Priority

DE 3910923 A 19890405

Abstract (en)

[origin: JPH02289198A] PURPOSE: To color paper in blue color, etc., having excellent light resistance, moisture resistance (blotting resistance) and fastness to acid, alkali and alum by using a specific dye. CONSTITUTION: Paper is colored with a dye expressed by formula I [X is H, OH, a 1-4C alkoxy or NHR3 ; R1 is H or a 1-4C alkyl; R2 and R3 are each H, an alkyl (carbonyl), an alkylsulfonyl, an aryl (carbonyl), an arylsulfonyl, an aralkyl (carbonyl) or aminocarbonyl] (e.g. the compound of formula II).

Abstract (de)

Farbstoffe der Formel <IMAGE> mit den in der Beschreibung genannten Substituentenbedeutungen eignen sich hervorragend zum Färben von Papier. Sie liefern licht- und naßechte blaue Färbungen.

IPC 1-7

D21H 21/28

IPC 8 full level

C09B 31/08 (2006.01); D21H 21/28 (2006.01)

CPC (source: EP US)

D21H 21/28 (2013.01 - EP US); Y10S 8/919 (2013.01 - US)

Citation (search report)

Designated contracting state (EPC)

CH DE FR GB LI

DOCDB simple family (publication)

EP 0391170 A1 19901010; EP 0391170 B1 19931110; DD 299326 A5 19920409; DE 3910923 A1 19901011; DE 59003396 D1 19931216; JP H02289198 A 19901129; US 5034017 A 19910723

DOCDB simple family (application)

EP 90105512 A 19900323; DD 33943290 A 19900404; DE 3910923 A 19890405; DE 59003396 T 19900323; JP 7908190 A 19900329; US 49737190 A 19900321