Patent ID: 6342271
Filing Date: 2002-01-29
Classification: C03C,C08G

Abstract:
Resin composition comprising a urea-modified phenol-formaldehyde resole which has a formaldehyde/phenol ratio of 2 to 5, exhibiting a free formaldehyde content lower than or equal to 3% (by weight relative to the total weight of the composition), a free phenol content lower than or equal to 0.5% and a dilutability measured at 20Â° C. of at least 1000%, wherein said resole comprises (a) an overcondensed resole obtained by condensation of phenol, of formaldehyde and optionally of urea in basic medium until the product has a water dilutability measured at 20Â° C. and at pH 9 lower than or equal to 2000%, or (b) a product obtained by neutralization of the overcondensed resole (a).