Title:
【発明の名称】木材製品を結合させる際のレゾルシノール樹脂硬化用のオキサゾリジンに基づく硬化剤
Document Type and Number:
Japanese Patent JP2002503264
Kind Code:
A
Abstract:
An improved oxazolidine-based hardener to be used with a resorcinol resin or a tannin resin as the adhesive for the bonding of wood articles. Preferably, an oxazolidine is combined with a base such as NaOH and a powdered absorbent such as wheat flour. The adhesive based on the improved hardener can be used to glue wood particles to pass wet strength requirements after the glue is cured at room temperature for under 24 hours. The improved hardener composition is storage stable; it can be prepared anytime before its use, thus eliminating the need to prepare a hardener immediately prior to the glue use. Since it is formaldehyde-free; it eliminates the safety issues associated with handling formaldehyde or paraformaldehyde. Also, the hardener provides flexible gel time or working time. Since the resins can be cured at room temperature, heating in an oven is not needed but could be used to reduce curing time. If radio frequencies are used to cure the resins, the exposure time can be reduced.
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Inventors:
U, Gaomin
Application Number:
JP54174798A
Publication Date:
January 29, 2002
Filing Date:
March 25, 1998
Export Citation:
Assignee:
Angus Chemical Company
International Classes:
B32B21/08; C08G8/22; C08G8/26; C08G14/02; C08K3/22; B27N3/00; C08L61/12; C09J161/12; C09J161/34; (IPC1-7): C08G8/22; B27N3/00; B32B21/08; C08L61/12; C09J161/12
Attorney, Agent or Firm:
Kazuo Shamoto (4 outside)