Method for thermal stabilization of highly concentrated...

Details Method for thermal stabilization of highly concentrated... Method for thermal stabilization of highly concentrated...

2007-09-25

2007-09-25

Witherspoon, Sikarl A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

Reexamination Certificate

active

10547857

ABSTRACT:
Method of stabilizing high-concentration formaldehyde solutions having a CH2O content of >70% by weight against precipitation of solids, which comprises heating the high-concentration formaldehyde solution at a heating rate of at least 5° C./min to a temperature of from 80° C. to 200° C. immediately after it has been prepared and storing it at a temperature in this range.

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