Stable pumpable zeolite/siliconate suspensions
AssigneeRhone-Poulenc Chimie
InventorsDaniel Jourbert, Marc Malassis
Life of this patent
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Abstract
Stable suspensions of zeolite particulates, in water, well adapted for detergency applications, have a pumpable low viscosity and include an effective viscosity reducing amount of a siliconate and/or a siliconate derivative and, advantageously, a suspension stabilizer, e.g., an alkaline earth metal cation or a biogum polysaccharide.
Claims22
A stable zeolite suspension, in water, said zeolite suspension having a pumpable low viscosity and comprising from 40-51% by weight zeolite and 0.01-2% by weight of a siliconate, a siliconate derivative, or mixtures thereof, wherein said siliconate, siliconate derivative, or mixture thereof, has the formula (I):
- R Si(OM).sub.m (OH).sub.3-m (I)
- a condensation product thereof, or mixtures thereof, in which R is a non-substituted hydrocarbon radical having from 1 to 18 carbon atoms;
- m is an integer or fraction ranging from 0.1 to 3;
- and M is an alkali metal or an ammonium or phosphonium group.
A stable zeolite suspension, in water, said zeolite suspension having a pumpable low viscosity and comprising from 40-51% by weight zeolite and 0.01-2% by weight of a siliconate, a siliconate derivative, or mixtures thereof, wherein said siliconate, siliconate derivative, or mixture thereof, has the formula (I)
- R--SI(OM).sub.m (OH).sub.3-m (I)
- a condensation product thereof, or mixtures thereof, in which R is a non-substituted hydrocarbon radical having from 1 to 18 carbon atoms;
- m is an integer or fraction ranging from 0.1 to 3;
- and M is an alkali metal or an ammonium or phosphonium group further comprising a suspension-stabilizing amount of at least one stabilizer in addition to the siliconate where in said stabilizer is an alkaline earth metal cation, a polysaccharide, cellulose, starch or derivative thereof, carboxylic acid or salt thereof or cross-linked acrylic acid polymer.
Dependencies are inferred from the claim text.