EP 0944705 A2 19990929 - IMPROVEMENTS RELATING TO BLEACHING COMPOSITIONS COMPRISING HYDROGEN PEROXIDE
Title (en)
IMPROVEMENTS RELATING TO BLEACHING COMPOSITIONS COMPRISING HYDROGEN PEROXIDE
Title (de)
VERBESSERTE BLEICHMITTELZUSAMMENSETZUNGEN ENTHALTEND WASSERSTOFFPEROXID
Title (fr)
AMELIORATIONS CONCERNANT DES COMPOSITIONS DE BLANCHIMENT CONTENANT DU PEROXYDE D'HYDROGENE
Publication
Application
Priority
- EP 9706164 W 19971031
- GB 9624840 A 19961129
Abstract (en)
[origin: WO9823717A2] The invention provides a bleaching composition of pH 10-14 which comprises an oxygen transfer agent and hydrogen peroxide. It is believed that the reaction of hydrogen peroxide with the imine quat. oxygen transfer agents proceeds through a different route than that of the organic and inorganic peroxides. As a consequence, the formation of acyl hydroxamate is significantly reduced. Furthermore it is believed that when hydrogen peroxide is used as the bleaching agent in the pH range indicated, a surprising improvement in the efficacy of the bleaching system occurs and it is possible to formulate peroxide based systems which have efficacy approaching or exceeding that of hypochlorite without the disadvantages associated with hypochlorite. A further aspect of the present invention provides a method for bleaching a stained substrate which comprises the step of treating the substrate with a bleaching composition of pH 10-14, which bleaching composition comprises an oxygen transfer agent and hydrogen peroxide.
IPC 1-7
IPC 8 full level
C11D 3/26 (2006.01); C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 17/08 (2006.01)
CPC (source: EP KR)
C11D 3/39 (2013.01 - KR); C11D 3/3927 (2013.01 - EP); C11D 3/3947 (2013.01 - EP)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 9823717 A2 19980604; WO 9823717 A3 19980716; AR 009640 A1 20000426; AU 5319598 A 19980622; AU 740952 B2 20011115; BR 9713453 A 20000328; CA 2273168 A1 19980604; CN 1245525 A 20000223; EP 0944705 A2 19990929; GB 9624840 D0 19970115; HU P0000322 A2 20000728; HU P0000322 A3 20030228; IN 189585 B 20030329; JP 2001504880 A 20010410; KR 20000069188 A 20001125; SK 69999 A3 19991108; TR 199901906 T2 19991021; ZA 9710143 B 19990511
DOCDB simple family (application)
EP 9706164 W 19971031; AR P970105579 A 19971127; AU 5319598 A 19971031; BR 9713453 A 19971031; CA 2273168 A 19971031; CN 97181562 A 19971031; EP 97950132 A 19971031; GB 9624840 A 19961129; HU P0000322 A 19971031; IN 654BO1997 A 19971110; JP 52419798 A 19971031; KR 19997004751 A 19990529; SK 69999 A 19971031; TR 9901906 T 19971031; ZA 9710143 A 19971111