1,2-Bis-adducts of stable nitroxides with substituted ethylenes

Details 1,2-Bis-adducts of stable nitroxides with substituted ethylenes 1,2-Bis-adducts of stable nitroxides with substituted ethylenes

1996-12-02

1998-12-01

Krass, Frederick

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 87, 524 98, 524102, 524103, 524104, 524105, 526204, 546191, C08K 534

Patent

active

058440259

ABSTRACT:
1,2-Bis-adducts of stable hindered nitroxide compounds with substituted ethylenes are prepared by reacting two equivalents of nitroxyl compound with an ethylenically unsaturated compound such as styrene or an acrylate ester. These adducts are very effective inhibitors to prevent the premature polymerization of ethylenically unsaturated monomers when such monomers are distilled, processed or stored.

REFERENCES:
patent: 5322960 (1994-06-01), Sakamoto et al.
Journal of Fluorine Chemistry 69(1994) 163-169 A.E. Tipping, et al.
J. Chemical Society C, 901(1966)--R.E. Banks, et al.
J. Chemical Society C, 2777(1971)--R.E. Banks, et al.
Polymer Bulletin 6, 589(1982) G. Moad, et al.

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