EP 0157483 A1 19851009 - Peroxide activation.
Title (en)
Peroxide activation.
Title (de)
Aktivierung von Peroxid.
Title (fr)
Activation de péroxide.
Publication
Application
Priority
GB 8405189 A 19840228
Abstract (en)
Hydrogen peroxide and persalts are markedly less efficient bleaching agents at hand-hot temperatures than near the boiling point of solutions containing them. In order to improve the bleaching performance of such percompounds, the invention provides an activator system comprising a catalytic amount of a soluble manganous salt in conjunction with an excess amount of an alkali metal citrate or citric acid. Typically about 0.5 to 5 mg/l manganous ion is provided in solution together with 100 to 5000 mg/l citrate, and percompound providing from 35 to 10000 ppm mg/l available oxygen. The bleach system can be employed on its own, or as an additive to a washing composition or even as a component of the latter.
IPC 1-7
IPC 8 full level
B01J 27/053 (2006.01); C01B 15/01 (2006.01); C11D 3/39 (2006.01); C11D 7/54 (2006.01)
CPC (source: EP)
C11D 3/3932 (2013.01)
Citation (search report)
- [AD] EP 0072166 A1 19830216 - PROCTER & GAMBLE [US], et al
- [AD] US 3532634 A 19701006 - WOODS WILLIAM G
- [AP] EP 0111964 A2 19840627 - UNILEVER NV [NL]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0157483 A1 19851009; AU 3915485 A 19850905; BR 8500864 A 19851015; ES 540757 A0 19851116; ES 8705516 A1 19870501; GB 8405189 D0 19840404; JP S60210698 A 19851023; PT 80029 A 19850301; PT 80029 B 19861118; ZA 851282 B 19851030
DOCDB simple family (application)
EP 85301075 A 19850219; AU 3915485 A 19850226; BR 8500864 A 19850227; ES 540757 A 19850227; GB 8405189 A 19840228; JP 3734885 A 19850226; PT 8002985 A 19850228; ZA 851282 A 19850220