Process for preparing solid melamine
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United States of America Patent
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-
Aug 5, 2003
Grant Date -
N/A
app pub date -
Aug 30, 2001
filing date -
Mar 15, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for producing solid melamine by expanding liquid, ammoniacal melamine which is mixed with excess ammonia, whereby a dispersion is produced. Said dispersion is expanded, optionally after it has been held under ammonia pressure, whereby solid melamine is deposited. The solid melamine is optionally held under ammonia pressure. Expansion is then optionally carried out in any particular order, along with cooling to room temperature and the pure melamine is isolated.
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