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US 9,981,929 B2Granted
Method for prevention of premature polymerization
AssigneeNitto Belgium NV
InventorsGreet Bossaert, Monica Gomes, Bart Forier
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Abstract
The present invention relates to a method for prevention of premature polymerization during the preparation, purification, transportation and storage of a polymerizable compound with at least one conjugated unsaturated group in the presence of an azine dye-based compound as inhibitor. Further the present invention relates to methods of preparing such inhibitors as well as to the inhibitors itself, as well as to methods of improving solubility and stability of dissolved inhibitors.
Claims7
An azine dye-based compound having the general formula (ADX):
- wherein:
- Y is S.
- R1-R4 is methyl,
- R5-R10 is hydrogen and
- X− is any anion selected from the group consisting of CH3(CH2)nSO3−, with n being an integer of from 6 to 30, or an organic sulfonate comprising an hydroxyl substituted aromatic moiety.
2 more elements
Dependencies are inferred from the claim text.