Global Patent Index - EP 0957159 B1

EP 0957159 B1 20021009 - Detergent tablet and process thereof

Title (en)

Detergent tablet and process thereof

Title (de)

Waschmitteltablette und Verfahren zu ihrer Herstellung

Title (fr)

Tablette détergente et procédé de fabrication

Publication

EP 0957159 B1 20021009 (FR)

Application

EP 99420117 A 19990512

Priority

FR 9806338 A 19980514

Abstract (en)

[origin: EP0957159A1] A detergent tablet with a sandwich structure of at least three layers comprises: (1) two external layers comprising an antiscaling agent; and (2) an internal layer comprising a bleaching agent. The external layers dissolve faster than the internal layer and are retarding agents for the internal layer in order to pretreat the washing water against lime scale. The tablet dissolves in two steps: first the external layers, then the internal layer when the external layers are entirely dissolved. An Independent claim is also included for the manufacturing of the tablet.

IPC 1-7

C11D 17/00; C11D 3/39

IPC 8 full level

C11D 3/39 (2006.01); C11D 17/00 (2006.01)

CPC (source: EP)

C11D 3/3942 (2013.01); C11D 17/0078 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES GB GR IT LI LU NL PT

DOCDB simple family (publication)

EP 0957159 A1 19991117; EP 0957159 B1 20021009; AT 225846 T 20021015; DE 69903371 D1 20021114; DE 69903371 T2 20030618; ES 2182469 T3 20030301; FR 2778666 A1 19991119; FR 2778666 B1 20030117

DOCDB simple family (application)

EP 99420117 A 19990512; AT 99420117 T 19990512; DE 69903371 T 19990512; ES 99420117 T 19990512; FR 9806338 A 19980514