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Abstract

A wood treatment concentrate includes, by weight; (a) 0.1-10% of an active wood treatment chemical, (b) 50-99% of a microemulsion concentrate including: (i) 0.03-80%, preferably 40-70%, of a castor oil ethoxylate or tristyryl phenol ethoxylate, (ii) 0-10%, preferably 0.005-6%, of an ethoxylated phosphoric acid ester as pH buffer, (iii) 0.002-40%, preferably 0.05-29%, of a N--C.sub.8 -C.sub.18 alkyl pyrrolidone and (iv) 0-60%, preferably 0.15-40%, of a N--C.sub.1 -C.sub.4 alkyl pyrrolidone, and (v) 0-30%, preferably 0.5-15%, of an ethylene oxide/propylene oxide block copolymer; and (c) 1-50% of a substituted phenol. The use formulation includes (d) water of dilution.

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First Claim