Stabilized phenolic resin melamine dispersions and methods of making same
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United States of America Patent
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Jun 29, 1999
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N/A
app pub date -
Aug 28, 1996
filing date -
Jun 6, 1995
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Abstract
Disclosed is a stabilized phenolic resin melamine dispersion comprising a liquid alkaline resole resin composition and solid melamine crystal dispersed throughout the resin composition. The liquid alkaline resole resin composition comprises the reaction product of combining formaldehyde and phenol at a formaldehyde to phenol mole ratio of about 0.5:1 to about 3.5:1 in the presence of a basic catalyst. The melamine crystal to phenol mole ratio ranges from about 0.01:1 to about 1:1. Moreover, the composition has a free formaldehyde content of at most about 0.5 weight percent. A method for making this dispersion is also disclosed.
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