Process for preparation of benzoxazine compounds in solventless systems
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United States of America Patent
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Aug 6, 1996
Grant Date -
N/A
app pub date -
May 18, 1994
filing date -
May 18, 1994
priority date (Note) -
Expired
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Abstract
A method for preparing a desired benzoxazine compound comprises preparing a substantially homogeneous reaction mixture that includes a phenolic compound; a primary amine; and an aldehyde, but no solvent other than for the solvency which the reactants may have for each other. Following its preparation, the reaction mixture is maintained at a temperature, and for a period sufficient to cause the reactants to combine chemically to form the desired compound.
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