Aqueous inpress primer sealer for hardboard manufacturing

Details Aqueous inpress primer sealer for hardboard manufacturing Aqueous inpress primer sealer for hardboard manufacturing

1989-12-26

1991-10-22

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

427393, 428151, B27N 300

Patent

active

050592645

ABSTRACT:
An aqueous dispersed primer-sealer composition applied to a surface layer of overlay paper or surface mat provides an impregnated surface layer for use in manufacturing hardboard products by hot pressing in a molding operation. The primer sealer provides a finished surface as well as defect-free surface from the molding surface. The primer-sealer can be pigmented and is based on a polymeric binder composition containing melamine resin, carboxyl functional acrylic emulsion copolymer, vinyl-acetate-vinyl versatate copolymer, emulsified fatty acid, and polyvinyl alcohol.

REFERENCES:
patent: 3983307 (1976-09-01), Power et al.
patent: 4017434 (1977-04-01), Suzui et al.
patent: 4505986 (1985-03-01), Geerdes et al.

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