Polymerization-inhibiting composition, polymerization inhibitor and method for inhibiting polymerization
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United States of America Patent
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Aug 3, 2004
Grant Date -
N/A
app pub date -
Sep 1, 2000
filing date -
Mar 3, 1998
priority date (Note) -
Expired
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Abstract
The invention relates to a polymerization inhibitor comprising at least one compound (a) selected from the group consisting of a compound having an NO radical in its molecule and a precursor compound capable of forming an NO radical, and a phosphorus-containing compound (b), wherein a weight ratio of the compound (a) to the phosphorus-containing compound (b) is 1:10 to 100:1. Specifically, the invention provides a method for inhibiting the polymerization of at least one monomer (c) selected from the group consisting of a conjugated diene, an aromatic vinyl, an ethylenically unsaturated nitrile and an .alpha.-olefin, comprising causing the polymerization inhibitor to coexist with the monomer (c), and a polymerization-inhibiting composition comprising the polymerization inhibitor and the monomer (c).
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