Polycarbonate polyol nanocomposites
AssigneeSaudi Aramco Technologies Company
InventorsMohammad S. Alroaithi, Mohammed Alshammasi, Wei Xu
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Abstract
In one aspect, the present disclosure encompasses a nanocomposite composition comprising a polycarbonate polyol and a nanofiller, wherein the polycarbonate polyol comprises: (a) a polycarbonate polyol derived from copolymerization of CO2 and one or more epoxides; and/or (b) an aliphatic polycarbonate polyol. In a second aspect, the present disclosure encompasses a method for preparing the nanocomposite composition. In a third aspect, the present disclosure encompasses a method of improving a performance property of a polycarbonate polyol, the method comprising the step of forming the nanocomposite composition.
Claims17
A nanocomposite composition comprising a polycarbonate polyol and a nanofiller,
- wherein the polycarbonate polyol comprises:
- a polycarbonate polyol derived from copolymerization of carbon dioxide (CO2) and one or more epoxides, or
- an aliphatic polycarbonate polyol, and
- the nanocomposite composition has a viscosity when measured by an oscillatory rheometer according to ASTM D7175, ASTM D7483, or the procedure described in Example 2, that is lower compared to that of a neat polycarbonate polyol.
A method for preparing a nanocomposite composition, the method comprising the steps of:
- providing a polycarbonate polyol, wherein the polycarbonate polyol comprises:
- a polycarbonate polyol derived from copolymerization of CO2 and one or more epoxides;
- or
- an aliphatic polycarbonate polyol;
- providing a nanofiller;
- and
- mixing compositions in steps (a) and (b), and allowing the mixture to form a nanocomposite composition, wherein the nanocomposite composition has a viscosity when measured by an oscillatory rheometer that is lower than that of a neat polycarbonate polyol.
A method of improving a performance property of a polycarbonate polyol, the method comprising the step of forming a nanocomposite composition comprising i) the polycarbonate polyol and ii) a nanofiller, wherein the performance property is viscosity when measured by an oscillatory rheometer according to ASTM D7175, ASTM D7483, or the procedure described in Example 2, and wherein the nanocomposite composition has a viscosity when measured by an oscillatory rheometer that is lower than that of a neat polycarbonate polyol.
Dependencies are inferred from the claim text.