Wood pretreatment for water-based finishing schedules
AssigneeLilly Industries Limited
InventorsBobby E. Beane, Eugen Safta
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Abstract
A wood treatment process is provided that allows surface finishing with water-based wood finishing coatings without the characteristic resultant surface roughness normally associated with the use of water-borne wood finishing compositions. The wood surface is wet with an aqueous solution of an aluminum salt and preferably dried prior to application of water-based finish coatings. The process can be carried out using novel wood stain compositions comprising aqueous solutions or suspension of aluminum salts and wood dyes.
Claims12
In a wood finishing process comprising application of a stain to the surface of a wood substrate and subsequent application of at least one water-based film-forming coating composition comprising a vinyl addition polymer, the improvement comprising wetting said surface with a solution of an aluminum salt prior to applying the water-based film-forming coating composition wherein the solution of aluminum salt is of a concentration and pH sufficient to reduce grain raising, relative to that of wood finished without said solution, upon subsequent contact of the wood with the water-based film forming coating composition.
A method for reducing surface roughness due to grain raising on a wood substrate finished using a stain based wood finishing protocol including the steps of staining a surface of the wood substrate and thereafter applying to the stained surface a water-based film-forming coating composition comprising a vinyl addition polymer, said method comprising applying an aqueous solution of an aluminum salt to wet the wood surface and drying the wetted wood surface prior to application of the film-forming coating composition.
Dependencies are inferred from the claim text.