GB427720A - Improvements in emulsions and process of making the same - Google Patents

Abstract

Bituminous emulsions are rendered stable during admixture with fibrous or mineral fillers by the addition, in the case of emulsions prepared solely by the use of alkaline water, of small quantities of trisodium phosphate, or, in the case of soapy emulsions, of trisodium phosphate preceded by an alkaline-earth metal salt such as calcium chloride in order to increase the fluidity. Examples of the first class of emulsions are those prepared as in Specifications 226,032 and 254,012, [both in Class 81 (i)]. The products when admixed with the fillers may be employed in pavement construction, or as paints or waterproofing agents, or may be compacted into briquettes or blocks or rolled into sheets. Examples: (1) an emulsion prepared as in Specification 254,012 has added to it \ba1/2\be per cent of trisodium phosphate in aqueous solution; (2) 7 parts of a soap solution prepared by saponifying 9 parts of Swedish rosin oil with 1 part of caustic soda in 15 parts of water, are mixed with 65 parts of molten asphalt and 0,154 parts of calcium chloride in 13,7 parts of water are added, followed by the addition of 0,169 parts of trisodium phosphate in 13,7 parts of water; the product is a fluid emulsion stable to admixture with fillers.