| abstract |
The basic catalyst, formaldehyde, water, and benzeneol react to form an intermediate composition, and subsequently resorcinol is added to the intermediate composition to reduce the amount of free formaldehyde to form a resorcinol-modified phenolic resin composition. do. Optionally, the alkanolamine can be mixed and reacted with the resorcinol-modified phenolic resin to form the resorcinol-alkanolamine-modified phenolic resin composition. Resorcinol-modified phenolic resins and resorcinol-alkanolamine-modified phenolic resins can be used to apply abrasive products having relatively low levels of free formaldehyde. |