Wood sealant composition
US4897291A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Apr 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L9/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.