EP 0578987 B1 19960103 - Process for the preparation of a mixture of sodium silicate and another salt and use of this mixture
Title (en)
Process for the preparation of a mixture of sodium silicate and another salt and use of this mixture
Title (de)
Verfahren zur Herstellung eines Gemisches aus Natriumsilikaten und einem weiteren Salz sowie die Verwendung des Gemisches
Title (fr)
Procédé de préparation d'un mélange de silicate de sodium et d'un autre sel et utilisation de ce mélange
Publication
Application
Priority
DE 4223546 A 19920717
Abstract (en)
[origin: EP0578987A1] To prepare a mixture of sodium silicates having a layer structure and a molar SiO2:Na2O ratio of 1.9:1 to 20:1 and at least one other salt supporting a washing or cleaning process, sodium silicate essentially composed of delta -Na2Si2O5 is initially reacted with at least one acid in the pH range from 9 to 13 with stirring. Hydrogen peroxide is then added to the reaction product. The reaction mixture is then concentrated under reduced pressure and dried. This mixture can be used as a composition for washing, cleaning and dishwashing and for bleaching wood pulp and paper.
IPC 1-7
IPC 8 full level
C01B 33/32 (2006.01); C01B 39/06 (2006.01); C11D 3/12 (2006.01); C11D 3/39 (2006.01); C11D 7/54 (2006.01); C11D 17/06 (2006.01); D06L 3/02 (2006.01); D06L 4/12 (2017.01); D21C 9/16 (2006.01)
CPC (source: EP)
C11D 3/1273 (2013.01); C11D 3/3942 (2013.01); D06L 4/12 (2016.12)
Designated contracting state (EPC)
BE DE ES FR GB NL
DOCDB simple family (publication)
EP 0578987 A1 19940119; EP 0578987 B1 19960103; DE 4223546 A1 19940120; DE 59301302 D1 19960215; ES 2082555 T3 19960316; JP H06183723 A 19940705
DOCDB simple family (application)
EP 93109657 A 19930617; DE 4223546 A 19920717; DE 59301302 T 19930617; ES 93109657 T 19930617; JP 17440193 A 19930714