EP 1451284 A1 20040901 - METHOD FOR PRODUCING COATED BLEACH ACTIVATOR GRANULES
Title (en)
METHOD FOR PRODUCING COATED BLEACH ACTIVATOR GRANULES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON UMHÜLLTEN BLEICHAKTIVATORGRANULATEN
Title (fr)
PROCEDE DE PRODUCTION DE GRANULES ENROBES ACTIVATEURS DE BLANCHIMENT
Publication
Application
Priority
- DE 10159388 A 20011204
- EP 0213127 W 20021122
Abstract (en)
[origin: WO03048290A1] The aim of the invention is to improve the stability in storage and pourability of particle-shaped bleach activators of formula (I) in which: R<1> represents -H, -CH3, a C2-24 alkyl radical or alkenyl radical, a substituted C2-24 alkyl radical or alkenyl radical having at least one substituent selected from the group comprised of -Cl, -Br, -OH, -NH2, -CN, an alkyl radical or alkenyl aryl radical having a C1-24 alkyl group or represents a substituted alkyl radical or alkenyl aryl radical having a C1-24 alkyl group and at least one additional substituent on the aromatic ring; R<2> and R<3>, selected independent of one another, consist of -CH2-CN, -CH3, -CH2-CH3, -CH2-CH<2>-CH3, -CH(CH3)-CH3, -CH2-OH, -CH2-CH2-OH, -CH(OH)-CH3, -CH2-CH2-CH2-OH, -CH2-CH(OH)-CH3, -CH(OH)-CH2-CH3, -(CH2CH2-0)nH with n being equal to 1, 2, 3, 4, 5 or 6; R<4> and R<5>, independent of one another, have a meaning previously given for R<1>, R<2> or R<3>, and; X is a charge-compensating anion. The stability in storage and pourability are improved, essentially by spraying the particle-shaped bleach activators with an acid aqueous solution that, as both a coating and hardening active substance, contains polymeric polycarboxylate and/or phosphonic acid or alkali phosphonate while simultaneously drying them in a fluidized bed apparatus.
IPC 1-7
IPC 8 full level
C11D 3/26 (2006.01); C11D 3/37 (2006.01); C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 7/08 (2006.01); C11D 7/26 (2006.01); C11D 7/32 (2006.01); C11D 7/36 (2006.01); C11D 7/54 (2006.01); C11D 11/00 (2006.01); C11D 17/00 (2006.01); C11D 17/06 (2006.01)
CPC (source: EP US)
C11D 3/3925 (2013.01 - EP US); C11D 11/0088 (2013.01 - EP US); C11D 17/0039 (2013.01 - EP US)
Citation (search report)
See references of WO 03048290A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03048290 A1 20030612; AT E325182 T1 20060615; AU 2002365628 A1 20030617; DE 10159388 A1 20030612; DE 50206700 D1 20060608; EP 1451284 A1 20040901; EP 1451284 B1 20060503; ES 2260519 T3 20061101; JP 2005514467 A 20050519; US 2004248754 A1 20041209
DOCDB simple family (application)
EP 0213127 W 20021122; AT 02804191 T 20021122; AU 2002365628 A 20021122; DE 10159388 A 20011204; DE 50206700 T 20021122; EP 02804191 A 20021122; ES 02804191 T 20021122; JP 2003549470 A 20021122; US 86118804 A 20040604