Spray-dried phenol formaldehyde resins
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United States of America Patent
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Aug 19, 2003
Grant Date -
N/A
app pub date -
Mar 15, 2002
filing date -
Mar 15, 2002
priority date (Note) -
Expired
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Abstract
The invention relates to formulations and methods of manufacturing spray-dried phenol-formaldehyde resin that contain highly reactive phenolic compounds that include resorcinol, alkyl resorcinols, meta-amino phenol or/and phloroglucinol. The powder resin contains 0.02 to 0.09 moles of the free (unreacted) highly reactive phenolic compound per 100 parts of the solids of the dried phenol-formaldehyde resin. The powder resin composition has fast curing property and desirable shelf life for manufacturing wood composite products.
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