Stable aqueous suspension of water-insoluble, calcium-binding aluminosilicates and organic suspending agents

摘要

Stable, pumpable, aqueous suspensions of water-insoluble, calcium-binding aluminosilicates suitable as stock suspensions comprising (A) from 20% to 55% by weight of at least one finely-divided, water-insoluble silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and having the formula, combined water not shown (M2/nO)x . Me2O3 . (SiO2)y where M is a cation of the valence n, exchangeable with calcium, x is a number of from 0.7 to 1.5, Me is aluminum or boron, and y is a number from 0.8 to 6, (B) from 0.2% to 5% by weight of at least one organic dispersing agent as follows: (1) lower alkylene oxide or glycide adducts of an N-higher alkyl/alkenyl-alkylenediamine, (2) lower alkylene oxide or glycide adducts of the reaction product of epsilon -caprolactam with an N-mono- or di-higher alkyl/alkenyl-alkylenediamine, (3) ethylene or propylene oxide adducts of long chain vicinal aminoalkanols, (4) the reaction product of ethylene glycol and a higher epoxyalkane and ethylene oxide adducts thereof.