EP 0936267 A3 19991027 - Alkali metal silicate/ nonionic surfactant compound
Title (en)
Alkali metal silicate/ nonionic surfactant compound
Title (de)
Alkalimetallsilicat/Niotensid-Compound
Title (fr)
Composé de silicate de métal alcalin / tensioactif nonionique
Publication
Application
Priority
DE 19805025 A 19980209
Abstract (en)
[origin: EP0936267A2] Production of a powdery mixture containing an alkali metal silicate with mole ratio SiO2:M2O of 1.8-4. M = Na and/or K and a nonionic surfactant. Production of a powdery mixture containing an alkali metal silicate with mole ratio SiO2:M2O of 1.8-4.0. M = Na and/or K and a nonionic surfactant by: (i) drying an aqueous solution of the silicate; (ii) pulverizing the solid product if necessary and isolating the fraction of size 0.2 - 0.6 mm; and (iii) contacting this fraction with the nonionic surfactant such that the wt. ratio nonionic surfactant:solid product in step (i) is above 0.5.
IPC 1-7
IPC 8 full level
C11D 3/08 (2006.01); C11D 11/00 (2006.01); C11D 11/02 (2006.01); C11D 17/06 (2006.01)
CPC (source: EP)
C11D 3/08 (2013.01); C11D 11/0088 (2013.01); C11D 11/02 (2013.01); C11D 17/06 (2013.01)
Citation (search report)
- [AX] GB 1467547 A 19770316 - SIFRANCE
- [AX] US 3838072 A 19740924 - SMITH F, et al
- [AX] US 4310431 A 19820112 - JOSHI DAVID P
- [A] DATABASE WPI Section Ch Week 8011, Derwent World Patents Index; Class A97, AN 80-18963C, XP002113877
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19805025 A1 19990812; EP 0936267 A2 19990818; EP 0936267 A3 19991027
DOCDB simple family (application)
DE 19805025 A 19980209; EP 99101997 A 19990201