Method for stabilizing acrylamide
Abstract
Abstract POLYMERIZATION OF ACRYLIC AMIDES IS VERY EFFECTIVELY INHIBITED BY ADDING THERETO AT LEAST ONE NITROSOBENZENE DERIVATIVE HAVING ONE METHYL GROUP AT THE TWO ORTHO POSITIONS WITH REGARD TO THE NITROSO GROUP. SAID NITROSOBENZENE DERIVATIVES ARE ALSO EXCELLENT IN THAT THEY HAVE A VERY SMALL COLORING ACTIVITY. SAID DERIVATIVES EXHIBIT THE POLYMERIZATION-INHIBITING EFFECT WHEN THEY ARE ADDED DURING THE PREPARATION OF ACRYLIC AMIDES OR DURING THE STORAGE OF THE ACRYLIC AMIDES. THE AMOUNT OF SAID DERIVATIVES ADDED NORMALLY RANGES FROM 0.00001 TO 0.5% BY WEIGHT BASED ON THE WEIGHT OF ACRYLIC AMIDES, BUT THE PREFERRED AMOUNT VARIES WITHIN SAID RANGE DEPENDING UPON THE ENVIRONMENTAL CONDITIONS OF ACRYLIC AMIDES.
Inventors
- 👤 Akira Iwasnita
- 👤 Tamio Tsunokawa
- 👤 Masahiro Yuyama
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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