Process for preparing a dispersion of inorganic oxide particles in polyester polyol
AssigneeBASF SE
InventorsFrank Thielbeer, Christian Koenig, Heinz-Dieter Lutter, Amir Doroodian, Udo Hadick
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Abstract
A process for preparing a dispersion of inorganic oxide particles in polyester polyol by mechanically mixing of the inorganic oxide particles at a temperature of more than 160° C. with a polyester polyol having an acid number in the range of from 0.05 to 1.5.
Claims16
A process for preparing a dispersion of inorganic oxide particles in a polyester polyol, the process comprising mechanically mixing inorganic oxide particles at a temperature of more than 160° C. with a polyester polyol having an acid number in a range of from 0.05 to 1.5,
- wherein the inorganic oxide particles are added to the polyester polyol, after preparing the polyester polyol.
A dispersion of inorganic oxide particles in a polyester polyol, obtainable by mechanically mixing oxidic silicon particles having a number average particle size d50 being an arithmetic or number mean diameter (d) in a range of from 0.5 to 24 μm at a temperature of more than 160° C. with a polyester polyol having an acid number in a range of from 0.05 to 1.5,
- wherein the oxidic silicon particles are added to the polyester polyol, after preparing the polyester polyol.
A polyester polyol dispersion comprising a polyester polyol having an acid number in a range of from 0.05 to 1.5 reacted with oxidic silicon particles having a number average particle size d50 being an arithmetic or number mean diameter (d) in a range of from 0.5 to 24 μm at a temperature of more than 160° C. with a polyester polyol having an acid number in a range of from 0.05 to 1.5,
- wherein the oxidic silicon particles are added to the polyester polyol, after preparing the polyester polyol.
Dependencies are inferred from the claim text.