초록 ▼

Wood-based products, to which an overlay material is attached, are pretreated with an aqueous suspension of alkaline, inorganic, multivalent compound such as magnesium hydroxide and a binding agent and then allowed to dry fixing the antistaining compound on the surface of the wood member. Selected a

Wood-based products, to which an overlay material is attached, are pretreated with an aqueous suspension of alkaline, inorganic, multivalent compound such as magnesium hydroxide and a binding agent and then allowed to dry fixing the antistaining compound on the surface of the wood member. Selected additives can be added to the aqueous suspension to enhance application and surface properties. Thereafter the treated members are installed, a typical application being as wood-based underlayment or structural subflooring in flooring construction. When a vinyl floor covering material is attached to the pretreated panel, the treatment functions as a stain blocker preventing unsightly staining of the vinyl floor covering over time.

대표청구항 ▼

[ We claim:] [1.] A stain blocking formulation for application to a wood-based substrate, comprising an aqueous liquid containing an alkaline magnesium compound selected from the group consisting of magnesium hydroxide, magnesium oxide, and mixtures thereof, and a binder material, wherein the alkali

[ We claim:] [1.] A stain blocking formulation for application to a wood-based substrate, comprising an aqueous liquid containing an alkaline magnesium compound selected from the group consisting of magnesium hydroxide, magnesium oxide, and mixtures thereof, and a binder material, wherein the alkaline magnesium compound is present in the formulation in an amount from about 5 to about 45 parts per hundred based on the total weight of the formulation, wherein the binder material secures the alkaline magnesium compound to the substrate, and wherein the formulation has a shelf-life of at least about two months at 20.degree. C.