USE OF ALKALI METAL-SILICA GEL (M-SG) MATERIALS IN SOLVENT AND MONOMER DRYING AND PURIFICATION FOR THEIR USE IN ANIONIC POLYMERIZATION
摘要
Stage 1 Group 1 metal/porous metal oxide compositions or Stage II Group 1 metal/porous metal oxide compositions are shown to be useful to remove impurities and act as drying agents for various types of solvents and for olefinic monomers used in anionic polymerizations. One important advantage of these compositions is their ability to dry simultaneously solvent and monomers, without inducing a significant polymerization of the latter. Another important characteristic is the capacity of the compositions to be totally inactive toward conventional anionic polymerization which allows them to be left in situ during the polymerization itself.
申请公布号
WO2009045914(A2)
申请公布日期
2009.04.09
申请号
WO2008US77920
申请日期
2008.09.26
申请人
SIGNA CHEMISTRY, INC.;LABORATOIRE DE CHIMIE DES POLYMERES ORGANIQUES, ENSCPB-CNRS
发明人
ITO, MANA;CARLOTTI, STEPHANE;DEFFIEUX, ALAIN;LEFENFELD, MICHAEL