Polyisocyanate: formaldehyde binder system for cellulosic...

Details Polyisocyanate: formaldehyde binder system for cellulosic... Polyisocyanate: formaldehyde binder system for cellulosic...

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18/1010, 154/93

B27D 1/04 (2006.01) B27N 3/00 (2006.01) B27N 3/06 (2006.01) B29C 33/64 (2006.01) B29C 33/68 (2006.01) C08G 18/64 (2006.01) C08L 97/02 (2006.01)

Patent

CA 1036737

ABSTRACT A process for bonding together cellulosic materials un- der conditions of elevated pressure and temperature using a bind- er system comprising an organic polyisocyanate and formaldehyde. This novel system provides strong, moisture-resistant bonds, and allows cellulosic materials containing up to about 22% moisture to be pressure consolidated without predrying. Use of the binder system in fabricating particleboard products is exemplified.

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