EP 0000081 B1 19820317 - ETCH BLEACHING LIQUID.
Title (en)
ETCH BLEACHING LIQUID.
Publication
Application
Priority
GB 2320477 A 19770601
Abstract (en)
[origin: US4203765A] An aqueous acidic etch-bleach solution comprising hydrogen peroxide, iron(III)ions and inorganic anions that form a silver salt having a solubility product not greater than 1x10-8 determined in water at 20 DEG C., characterized in that such solution contains in the dissolved state the combination of citric acid and a polymer containing alkylene oxide units for improved stabilization of the hydrogen peroxide.
IPC 1-7
IPC 8 full level
G03C 5/38 (2006.01); G03C 5/40 (2006.01); G03C 8/00 (2006.01); G03C 8/06 (2006.01); G03F 3/10 (2006.01); G03F 7/06 (2006.01)
CPC (source: EP US)
G03C 5/40 (2013.01 - EP US); G03C 8/00 (2013.01 - EP US); G03F 3/10 (2013.01 - EP US); G03F 7/06 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
FR 2373080 A1 19780630; CA 1117350 A 19820202; DE 2861664 D1 19820415; EP 0000081 A1 19781220; EP 0000081 B1 19820317; JP S53149401 A 19781226; JP S614097 B2 19860206; US 4203765 A 19800520
DOCDB simple family (application)
FR 7726019 A 19770825; CA 304550 A 19780531; DE 2861664 T 19780601; EP 78200021 A 19780601; JP 6629678 A 19780531; US 91148478 A 19780601