Abstract: The present invention relates to an adhesive composition for manufacturing plywood for exterior application including:a) 121 parts by weight phenolic resin;b) 5 to 121 parts by weight isocyanate;c) 1 to 40 parts by weight tannin selected from the group consisting of pine, quebracho, mimosa, and combinations thereof;d) 1 to 15 parts by weight paraformaldehyde or formaldehyde solutions in water;e) 5 to 50 parts by weight of water; andf) an amount of filler comprising inorganic and/or organic materials for providing the composition with the desired viscosity.
Type:
Grant
Filed:
November 18, 1992
Date of Patent:
April 18, 1995
Assignees:
Diteco Ltda, Quimicos Coronel S.A.
Inventors:
Antonio Pizzi, Ernst Von Leyser, Cristian Westermeyer