Melt dispersion process for making polymer polyols
摘要
Polystyrene is dispersed into a polyol via a mechanical dispersion process. A stabilizer is present to stabilize the dispersed polymer particles. The stabilizer includes a copolymer of (1) from 10 to 70% by weight of a branched polyol which has a molecular weight of from 4000 to 20,000, from 0.2 to about 1.2 polymerizable ethylenically unsaturated groups per molecule and from about 3 to about 8 hydroxyl groups per molecule with (2) from 30 to 90% by weight of styrene or a mixture of styrene and one or more other low molecular weight monomers.
申请公布号
AU2009259994(B2)
申请公布日期
2014.03.20
申请号
AU20090259994
申请日期
2009.06.18
申请人
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE;DOW GLOBAL TECHNOLOGIES LLC
发明人
VAN DER WAL, HANNO;VAN DAMME, FREDDY;KANANN, GEORGES;PLA, FERNAND;HOPPE, SANDRINE;CASATI, FRANCOIS;NOORDOVER, BART;WEVERS, RONALD;FONTEIX, CHRISTIAN