Melt dispersion of thermoplastic polystyrene in polymer polyols

H. Wal, van der (Inventor), F. Damme, van (Inventor), G. Kanaan (Inventor), F. Pla (Inventor), S. Hoppe (Inventor), B.A.J. Noordover (Inventor)

Research output: PatentPatent publication

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Abstract

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.
Original languageEnglish
Patent numberWO2009155427
Publication statusPublished - 2009

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