Laropal A 81 is a new generation of ultra-clear and yellowing-resistant aldehyde resin for pigments dispersions with excellent adhesiveness and reversibility over the years; New generation of ultra clear aldehydic resin resistant to yellowing, with excellent reversibility, heat resistance. Laropal A81 provides improved adesion, wetting and pigment dispersion properties. Choice of restorers and artists for preparation of high-end mediums and varnishes. Laropal is soluble in 40% White Spirit, pure alcohol and in a wide variety of polar and non-polar solvents. We recommend mix of 60% of Shellsol D40 + 40% of Shellsol A.There are many recipes of an "perfect" varnish, consisting of 70% of aromatic solvents and 30% of pure alcohol like isopropanol or metanol. Increasing the percentage of aromatic solvent will increase the working time, increasing the alcohol content will give you a cleaner finish increasing adhesiveness but decreased working time. To prepare an perfect varnish at your preference we would recommend test different options with Shellsol D40, Shellsol A, isopropanol or metanol and we also recommend addition of butanol as an slow evaporation alcohol.

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