Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1988-04-28
1990-01-30
Bell, Janyce
Coating processes
With post-treatment of coating or coating material
Heating or drying
427421, 524 69, 524 71, 524262, 524487, 524488, B05D 302, C08L 3302
Patent
active
048972916
ABSTRACT:
A sealant composition is provided to seal wood products against moisture absorption and the swelling caused thereby. The sealant composition is especially adapted to be applied to the cut ends of dimensioned lumber and particularly to the edges of wood products such as plywood, waferboard, oriented strand board and particle board. The composition includes a water-based polymeric binder, a wax hydrophobic filler and a water-soluble alkali metal siliconate salt. The polymeric binder preferably has two components. The first is a soft, stretchy polymer with a low glass transition temperature which allows the binder to stretch when the wood swells due to moisture absorption. The second is a polymer with a high glass transition temperature which enhances binding properties.
REFERENCES:
patent: 4268546 (1981-05-01), Schwartz et al.
patent: 4294874 (1981-10-01), Howe
patent: 4474491 (1984-05-01), Bradbury et al.
patent: 4543287 (1985-09-01), Briggs et al.
patent: 4678700 (1987-07-01), McAloon et al.
Bell Janyce
Georgia-Pacific Resins Inc.
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