| 摘要 |
Preservative compositions, their methods of manufacture, and use in preserving timber and other substrates. The compositions of the invention have unique modes of intra-component interaction and substrate- preservative- atmosphere interaction. More particularly, the invention relates to creosote based emulsions and derivatives, hereinafter referred to as pigment emulsified creosote (PEC). In accordance with the invention there is provided a preservative composition which is ultra-stable in the presence of wood extractives, said composition comprising an emulsion of a wood preservative grade creosote, from 5 to 95% water, and one or more pre-dispersed micronised pigments, said emulsion having been produced under conditions of ultra high shear, characterised in that said composition contains from a trace to 2.5 wt% of a rheology structuring agent, from 0.25 to 10 wt% of an alkali metal salt of a wood derived resin, from 0.1 to 5 wt% of a surfactant, from 0.25 to 5 wt% of a lignin sulfonate and from 0.25 to 2 wt% of a pigment modifying resin, said percentages being based on the total weight of said emulsion. |
