Pourable aqueous boron-containing compositions and their preparation
AssigneeU.S. Borax Inc.
InventorsIgan Hayati, Colin William Campbell
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Abstract
A pourble aqueous borate-containing suspension which suspension in water contains 8 to 13% by weight boron as sodium pentaborate, 0.1 to 3% by weight of a swellable clay, and 0.05 to 0.2% by weight of a polysaccharide. The aqueous compositions according to the invention are physically stable, yet pourable and therefore readily handled. They may be used directly or, if appropriate, diluted for use. They may be used as a source of boron for crops or for other applications where there is a need for aqueous soluble borate suspensions.
Claims27
A pourable aqueous borate-conaing suspension composition comprising 8 to 13% by weight boron, 0.1 to 3% by weight swellable clay, and 0.05 to 0.2% by weight polysaccharide, said percentages based on the total weight of the suspension.
A process for preparing a pourable aqueous suspension which comprises reacting boric acid and a sodium tetraborate in an aquous suspension under agitation to fotm a sodium pentaborate suspension comprising 8 to 13% by weight boron in the prescence of 0.1 to 3% by weight swellable clay and 0.05 to 0.2% by weight polysaccharide, said percentages based on the total weight of the suspension.
A process for preparing a pourable aqueous borate-containing suspension comprising the following steps:
- (a) forming a mixture of swellable clay and polysaccharide with water;
- (b) adding boric acid and a hydrated sodium tetraborate in substantially stoichiometric amounts for sodium pentaborate;
- and
- (c) allowing said boric acid and sodium tetraborate to react under agitated to form sodium pentaborate,
- thereby producing a pourable suspension comprising 8 to 13% by weight boron, 0.1 to 3% by weight swellable clay, and 0.05 to 0.2% by weight polysaccharide, said percentages based on the total weight of the suspension.
Dependencies are inferred from the claim text.