Method for glueing with curable, formaldehyde-based adhesives and a curing composition for use in the method
AssigneeAB Casco
InventorSven-Erik Andersson
Life of this patent
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Abstract
A hardener composition for precondensates or liquid resins containing resorcinol and formaldehyde or resorcinol-phenol and formaldehyde and a method for glueing by using them. The hardener composition contains powdered paraformaldehyde suspended in a suspending agent that includes a precondensate of ketone and formaldehyde, which precondensate preferably contains water as a dilution media.
Claims11
In the known method of glueing with resins formed from resorcinol-formaldehyde or resorcinol-phenol-formaldehyde precondensates and hardener compositions containing paraformaldehyde suspended in a suspending agent, the improvement which comprises using as a suspending agent for the paraformaldehyde a precondensate between a ketone and formaldehyde.
A hardener composition that contains paraformaldehyde suspended in a precondensate between formaldehyde and lower ketones.
Dependencies are inferred from the claim text.