EP 0105170 A3 19860806 - PROCESS FOR THE AFTER TREATMENT OF ALUMINIUM OXIDE LAYERS WITH AQUEOUS SOLUTIONS CONTAINING ALKALI SILICATE, AND ITS APPLICATION DURING THE MANUFACTURE OF SUPPORTS FOR OFFSET PRINTING PLATES

Title (en)

PROCESS FOR THE AFTER TREATMENT OF ALUMINIUM OXIDE LAYERS WITH AQUEOUS SOLUTIONS CONTAINING ALKALI SILICATE, AND ITS APPLICATION DURING THE MANUFACTURE OF SUPPORTS FOR OFFSET PRINTING PLATES

Publication

EP 0105170 A3 19860806 (DE)

Application

EP 83108259 A 19830822

Priority

DE 3232485 A 19820901

Abstract (en)

[origin: US4492616A] A process is disclosed for manufacturing sheets, foils, or strips which involves chemically, mechanically, and/or electrochemically roughening and anodically oxidizing aluminum or aluminum alloy surfaces, followed by two post-treatment steps. In the first step, the metal surface is treated with an aqueous alkali metal silicate solution; thereafter, the surface is treated with an aqueous solution comprising alkaline earth metal ions. The materials produced according to this process are particularly used as supports for offset-printing plates.

IPC 1-7

C25D 11/18; B41N 1/08

IPC 8 full level

C25D 11/18 (2006.01); B41N 1/08 (2006.01); B41N 3/03 (2006.01); C25D 11/20 (2006.01); C25D 11/24 (2006.01)

CPC (source: EP US)

B41N 3/038 (2013.01 - EP US); C25D 11/24 (2013.01 - EP US); Y10S 205/921 (2013.01 - EP US)

Citation (search report)

[A] US 3749596 A 19730731 - YOSHIMURA C
[A] GB 965837 A 19640806 - CHARLES CALVIN COHN, et al
[A] FR 2385819 A1 19781027 - YOSHIDA KOGYO KK [JP]
[AD] US 2882154 A 19590414 - BERNARD COHN
[A] CHEMICAL ABSTRACTS, Band 95, Nr. 1, Juli 1981, Seite 544, Nr. 15146n; & JP-A-56 005 999 (TATUNG CO.) 22.01.1981

Designated contracting state (EPC)

AT CH DE FR GB LI NL

DOCDB simple family (publication)

DE 3232485 A1 19840301; AU 1814783 A 19840308; AU 553196 B2 19860703; BR 8304765 A 19840410; CA 1225961 A 19870825; DE 3375307 D1 19880218; EP 0105170 A2 19840411; EP 0105170 A3 19860806; EP 0105170 B1 19880113; JP H0314916 B2 19910227; JP S5959897 A 19840405; US 4492616 A 19850108; ZA 836092 B 19840425

DOCDB simple family (application)

DE 3232485 A 19820901; AU 1814783 A 19830819; BR 8304765 A 19830831; CA 434745 A 19830817; DE 3375307 T 19830822; EP 83108259 A 19830822; JP 14972983 A 19830818; US 52459183 A 19830819; ZA 836092 A 19830818