POLYMER POLYOLS PREPARED FROM NITRILE-FREE AZO-INITIATORS
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United States of America Patent
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Issued Date -
Dec 15, 2011
app pub date -
Jun 11, 2010
filing date -
Jun 11, 2010
priority date (Note) -
Abandoned
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Abstract
This invention relates to nitrile-free azo initiators for the preparation of polymer polyols and to the polymer polyols prepared therefrom. These novel polymer polyols comprise a base polyol, a preformed stabilizer and at least one ethylenically unsaturated monomer, in the presence of at least one free-radical polymerization initiator comprising as azo compound that is free of nitrile groups, and optionally, a polymer control agent. The process of preparing these polymer polyols is a continuous process comprising free-radically polymerizing a base polyol, a preformed stabilizer, and at least one ethylenically unsaturated monomer, in the presence of at least one free-radical polymerization initiator comprising as azo compound that is free of nitrile groups, and optionally, a polymer control agent.
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