Preservative composition

Details Preservative composition Preservative composition

B - Operations, Transporting

27

K

400/1, 117/160,

B27K 3/52 (2006.01) B27K 3/15 (2006.01) B27K 3/44 (2006.01) B27K 3/50 (2006.01) C09D 15/00 (2006.01)

Patent

CA 1223682

ABSTRACT The present invention relates to 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.

456602

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