Formaldehyde → Resorcinol-formaldehyde resin

Participants

Reaction Conditions

Reaction Steps

A resorcinol/formaldehyde latent catalyst resin was prepared by mixing formaldehyde into water having a pH between about 6.5 and 8.5. Resorcinol was loaded, and the mixture is heated to 77° F. to dissolve the resorcinol. After a reaction period, methanol was added, and then water sufficient to obtain a refractive index of about 1.4644. Then, the first lime/water slurry was added and the batch heated to 122° F. under vacuum. The batch then was heated to about 210° F. and cooked under vacuum to obtain a stable Gardner-Holdt viscosity.

Provenance & Evidence