Derivatives of 1-oxyl-4-hydroxy-2,2,6,6-tetramethylpiperidine as

Details Derivatives of 1-oxyl-4-hydroxy-2,2,6,6-tetramethylpiperidine as Derivatives of 1-oxyl-4-hydroxy-2,2,6,6-tetramethylpiperidine as

1998-06-10

1999-08-03

Chang, Ceila

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546187, 546191, 546216, 546217, 524 99, 252403, C07D21144, C08F 240

Patent

active

059327359

ABSTRACT:
Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine are surprisingly effective as inhibitors to prevent the premature polymerization of acrylic and methacrylic acids, their esters, their amides, vinyl acetate and acrylonitrile in the presence of water. Some of these derivatives are new compounds.

REFERENCES:
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patent: 3747988 (1973-07-01), Bailey
patent: 5254760 (1993-10-01), Winter et al.
patent: 5322960 (1994-06-01), Sakamoto et al.
patent: 5457204 (1995-10-01), Steinmann
patent: 5496875 (1996-03-01), Borzatta et al.
patent: 5504243 (1996-04-01), Sakamoto et al.

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