EP 0643763 A1 19950322 - RELEASABLY ENCAPSULATED ACTIVE SUBSTRATES.
Title (en)
RELEASABLY ENCAPSULATED ACTIVE SUBSTRATES.
Title (de)
WIEDER FREISETZBARE UMHULLTE AKTIVE SUBSTRATE.
Title (fr)
SUBSTRATS ACTIFS A ENROBAGE PERMETTANT LEUR LIBERATION.
Publication
Application
Priority
- GB 9301022 W 19930519
- GB 9211373 A 19920529
- GB 9213342 A 19920624
Abstract (en)
[origin: WO9324604A1] This invention relates to an encapsulated active substrate comprising a bleach and/or a bleach activator releasably encapsulated in a coating of at least one metal salt of an inorganic acid, said salt being soluble in an aqueous medium such that upon contacting the encapsulated substrate with the aqueous medium, the active substrate is released into said aqueous medium, characterized in that the substrate has a preliminary coating of an alkali metal carbonate or a bicarbonate and a final encapsulating coating of a metal salt of an inorganic acid. The coating technique controls the activity of the bleach or bleach activator and minimises dye damage or pinholing of the fabrics washed.
IPC 1-7
IPC 8 full level
C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 11/00 (2006.01); C11D 17/00 (2006.01)
CPC (source: EP)
C11D 3/392 (2013.01); C11D 3/3935 (2013.01); C11D 3/3942 (2013.01); C11D 17/0039 (2013.01)
Citation (search report)
See references of WO 9324604A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9324604 A1 19931209; AT E140955 T1 19960815; AU 4081693 A 19931230; CA 2136833 A1 19931209; DE 69303900 D1 19960905; DE 69303900 T2 19961128; EP 0643763 A1 19950322; EP 0643763 B1 19960731; ES 2090997 T3 19961016; JP H10500433 A 19980113
DOCDB simple family (application)
GB 9301022 W 19930519; AT 93910229 T 19930519; AU 4081693 A 19930519; CA 2136833 A 19930519; DE 69303900 T 19930519; EP 93910229 A 19930519; ES 93910229 T 19930519; JP 50028894 A 19930519