EP 0867278 B1 20011121 - Radiation-sensitive mixture and recording material made thereof for offset printing plates
Title (en)
Radiation-sensitive mixture and recording material made thereof for offset printing plates
Title (de)
Strahlungsempfindliches Gemisch und damit hergestelltes Aufzeichnungsmaterial für Offsetdruckplatten
Title (fr)
Composition photosensible et matériel pour l'enregistrement pour plaques lithographiques préparé à partir de cette composition
Publication
Application
Priority
DE 19712323 A 19970324
Abstract (en)
[origin: EP0867278A1] Positive-or negative-working radiation-sensitive mixture contains a carbon black pigment (I) with a primary particle size < 80 nm as infra-red (IR)-absorbing component. This is pre-dispersed in a polymer (II) containing acid units with a pKa value < 13. Also claimed are: (i) recording material with a substrate and a radiation-sensitive layer of this mixture; and (ii) a method of making a printing plate. Preferably (I) has a BET surface area NOTLESS 30 m<2>/g and a pH < 7 in aqueous dispersion. The average primary particle size is < 60, especially < 30 nm. PREFERRED POLYMER - In (II), the acid units have an acid proton linked to a hetero-atom and especially have amino (-NH2), imino (-NH-), phenolic hydroxyl (-OH) or carboxyl (-COOH) groups. (II) contains NOTLESS 1, especially NOTLESS 1.5 mmole acid groups/g
IPC 1-7
IPC 8 full level
B41C 1/10 (2006.01); B41M 5/40 (2006.01); B41M 5/46 (2006.01); C09D 11/00 (2006.01); G03F 7/00 (2006.01); G03F 7/004 (2006.01); G03F 7/021 (2006.01); G03F 7/022 (2006.01); G03F 7/32 (2006.01)
CPC (source: EP US)
B41C 1/1008 (2013.01 - EP US); B41M 5/465 (2013.01 - EP US); B41C 2210/02 (2013.01 - EP US); B41C 2210/04 (2013.01 - EP US); B41C 2210/06 (2013.01 - EP US); B41C 2210/20 (2013.01 - EP US); B41C 2210/24 (2013.01 - EP US); B41C 2210/262 (2013.01 - EP US)
Citation (examination)
Ullmann's Encyclopedia of Industrial Chemistry, 5th edition, volume A5, pages 154 to 157
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0867278 A1 19980930; EP 0867278 B1 20011121; DE 19712323 A1 19981001; DE 59802188 D1 20020103; JP H10293398 A 19981104; US 6100004 A 20000808
DOCDB simple family (application)
EP 98105080 A 19980320; DE 19712323 A 19970324; DE 59802188 T 19980320; JP 6682898 A 19980317; US 3816298 A 19980311