Global Patent Index - EP 0232092 A2

EP 0232092 A2 19870812 - Compositions and methods for removing tarnish from household articles.

Title (en)

Compositions and methods for removing tarnish from household articles.

Title (de)

Zusammensetzungen und Verfahren zur Entfernung von Trübung aus Haushaltsgegenständen.

Title (fr)

Compositions et procédés pour l'enlèvement de ternissure d'articles ménagers.

Publication

EP 0232092 A2 19870812 (EN)

Application

EP 87300598 A 19870123

Priority

US 82339786 A 19860128

Abstract (en)

Compositions and methods for the rapid and facile removal of tarnish from household articles having a surface comprising silver or a substantial amount of copper. The composition used in the method comprises at least one chelating agent selected from the group consisting of ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, 1,2-diaminoisobutane, ethylenediamine tetraacetic acid, ethylenediamine tetraacetic acid salts, diethylenetriamine pentaacetic acid and diethylenetriamine pentaacetic acid salts, with the proviso that when the chelating agent is other than ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane or 1,2-diaminoisobutane, said aqueous solution also comprises an accelerator selected from the group consisting of ethanolamine, diethanolamine, triethanolamine, diethylenetriamine, 1,4-diaminobutane, triethylenetetraamine, and ammonium salts (e.g., ammonium chloride, ammonium nitrate and ammonium sulfate).

IPC 1-7

C11D 3/30; C11D 3/33

IPC 8 full level

C11D 3/30 (2006.01); C11D 3/33 (2006.01); C23G 1/24 (2006.01)

CPC (source: EP)

C11D 3/30 (2013.01); C11D 3/33 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0232092 A2 19870812; EP 0232092 A3 19880817; AU 590043 B2 19891026; AU 6802687 A 19870730; JP S6462486 A 19890308; NZ 219078 A 19890927

DOCDB simple family (application)

EP 87300598 A 19870123; AU 6802687 A 19870127; JP 20323787 A 19870817; NZ 21907887 A 19870128