Bonding wood composites with a calcium-modified phenol-formaldehyde resin
US9109074B2 · kind B2 · utility
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15References
20Claims
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Key dates
| Filing date | Mar 16, 2010 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Dec 28, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an aqueous phenol-formaldehyde resole resin prepared by reacting phenol and formaldehyde in the presence of a source of calcium ions, to a curable powdered (particulate) resole resin made by spray drying the aqueous phenol-formaldehyde resole resin, to a method of preparing a wood composite using the curable, powdered resin, and the related wood composite bonded with the curable, powdered resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.