PROCESS FOR REDUCING RESIDUALS CONTENT IN VINYL AROMATIC POLYMERS
摘要
The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer. Advantage of the present invention is a sharp reduction of the unpolymerized vinyl aromatic monomer in the vinyl aromatic polymer without generating a new residual and without inducing a colored vinyl aromatic polymer. The present invention also relates to said vinyl aromatic polymer having a low residuals content.
申请公布号
WO2008012217(A3)
申请公布日期
2008.03.06
申请号
WO2007EP57259
申请日期
2007.07.13
申请人
TOTAL PETROCHEMICALS FRANCE;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS);ROUSSEL, THOMAS-MAURICE;VUILLEMIN, BRUNO;FAJULA, FRANCOIS