Ammonia and ammonium hydroxide stabilizers for paraformaldehyde

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United States of America Patent

PATENT NO 11897996
SERIAL NO

17277611

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Abstract

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A process for forming stabilizing paraformaldehyde can include heating a formaldehyde solution comprising 30 wt % or more formaldehyde to a temperature ranging from about 70° C. to about 130° C.; aging the formaldehyde solution for a sufficient amount of time to polymerize the formaldehyde and form paraformaldehyde; solidifying the paraformaldehyde; and contacting the formaldehyde solution before and/or during heating, the formaldehyde solution during aging, the paraformaldehyde, and/or the solidified paraformaldehyde with an ammonia and/or ammonia hydroxide stabilizer.

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Patent Owner(s)

Patent OwnerAddress
CELANESE INTERNATIONAL CORPORATION222 W LAS COLINAS BLVD SUITE 900N IRVING TX 75039

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mancha, Martin Dominic Corpus Christi, US 1 0
Ray,, Jr John Leslie Kingsville, US 1 0
Windhorst, Kenneth Allen Portland, US 6 218

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