Cross-catalyzed phenol-resorcinol adhesive

A method for polymerizing a monohydroxylic phenolic resole resin together with a resorcinolic resin precondensate having a shortage of formaldehyde which comprises mixing:

• A. from about 70 to 99 parts of a first component having a pH of at least about 9 and comprising a stable aqueous, alkaline monohydroxylic phenolic resole resin solution containing from about 0.3% to 15% based on the weight of the resole resin solution of a methylolurea;
• with
• B. from about 1 to 30 parts of a second component comprising a stable aqueous resorcinolic resin precondensate having a shortage of formaldehyde and a pH of about 6 to 9.

A method for production of lignocellulosic panels by bonding lignocellulosic components under heat and pressure which comprises coating lignocellulosic components with an adhesive comprising a mixture of:

• A. about 70 to 99 parts of a first component comprising a stable aqueous, alkaline monohydroxylic phenolic resole resin solution containing from about 0.3% to 15%, based on the weight of the resole resin of a methylene donor;
• and
• B. about 1 to 30 parts of a second component comprising a polymerizable resorcinolic resin containing from about 1% to 30%, based on the weight of the resorcinolic resin, of a catalyst for the resole resin said catalyst selected from the group consisting of an ester functional catalyst and a carbamate which is the reaction product of a carbonate selected from the group consisting of alkylene, glycidol, and an epoxy resin carbonate with ammonia.