Bonding materials
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United States of America Patent
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Jan 1, 2002
Grant Date -
N/A
app pub date -
Jun 21, 1999
filing date -
Nov 15, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A composition for bonding ligno-cellulosic materials to form shaped products, the composition containing a formaldehyde based thermosetting bonding agent and capsules containing an agent reactive with said bonding agent which is at least one of a resin hardening agent, a flame/fire retardant and a water absorbent, wherein the capsules have walls that are capable of degradation to allow access of the agent to the bonding material, such degradation being at a temperature above the temperature prevailing in the system prior to application of heat in a final compression and heating stage.
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