Title:
POLYMER POLYOLS PREPARED FROM NITRILE-FREE AZO-INITIATORS
Document Type and Number:
WIPO Patent Application WO/2011/155982
Kind Code:
A3
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.
Inventors:
ADKINS RICK L (US)
ENGLAND JIONG (US)
HAHN NORBERT (DE)
ENGLAND JIONG (US)
HAHN NORBERT (DE)
Application Number:
PCT/US2011/001027
Publication Date:
May 18, 2012
Filing Date:
June 07, 2011
Export Citation:
Assignee:
BAYER MATERIALSCIENCE LLC (US)
BAYER MATERIALSCIENCE AG (DE)
ADKINS RICK L (US)
ENGLAND JIONG (US)
HAHN NORBERT (DE)
BAYER MATERIALSCIENCE AG (DE)
ADKINS RICK L (US)
ENGLAND JIONG (US)
HAHN NORBERT (DE)
International Classes:
C08K5/20; C08F2/38; C08F12/08; C08F20/44; C08K5/29
Foreign References:
| US7179882B2 | 2007-02-20 | |||
| US6642306B1 | 2003-11-04 | |||
| US6455603B1 | 2002-09-24 | |||
| US5196476A | 1993-03-23 |
Other References:
See also references of EP 2622011A4
Attorney, Agent or Firm:
CHEUNG, Noland, J. et al. (100 Bayer RoadPittsburgh, PA, US)
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