| 摘要 |
Described herein are resin products having particular utility as rapid curing adhesives for wood and other materials, and processes fo making the resin compositions. These products are made by reacting an aldehyde condensation polymer containing reactive alkylol groups, such as a phenol-formaldehyde condensation polymer, with an acyl hydrazide. When the resulting acyl hydrazide-modified polymers are blended with an appropriate curing agent, such as an aldehyde, the compositions cure very rapidly at ambient temperatures. When pieces of wood or other materials are spread with the preferred resin compositions of this invention and brought into contact with another wood surface the bond strength develops within minutes. The durability, strength and flexibility of the adhesives of this invention under adverse weathering conditions are excellent.
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