Back to results
US 8,283,390 B2Granted
Siloxane block copolymer nanoporous foams, methods of manufacture thereof and articles comprising the same
AssigneeSabic Innovative Plastics IP B.V.
InventorsChinniah Thiagarajan, Bernd Jansen, Santhosh Kumar Rajendran, Vauhini RM, Safwat E. Tadros
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.
Claims16
A foam comprising:
- a polysiloxane block copolymer;
- the polysiloxane block copolymer comprising a first block that comprises a polysiloxane block and a second block that comprises a polycarbonate, a copolyester-carbonate, a polyester, a polyarylate, or a combination comprising at least one of the foregoing polymers;
- the second block not containing a polysiloxane;
- the polysiloxane block being about 5 to about 45 repeat units;
- the foam having average pore sizes of less than or equal to about 100 nanometers;
- where the polysiloxane block has the structure
- wherein each occurrence of R3 is the same and is independently a C1-6 hydrocarbyl.
4 more elements
A method comprising:
- immersing a polysiloxane block copolymer with fluid to form a fluid saturated polysiloxane block copolymer;
- the polysiloxane block copolymer comprising a first block that comprises a polysiloxane block and a second block that comprises a polycarbonate, a copolyester-carbonate, a polyester, a polyarylate, or a combination comprising at least one of the foregoing polymers;
- the second block not containing a polysiloxane;
- the polysiloxane block being about 5 to about 45 repeat units;
- increasing the temperature of the fluid saturated polysiloxane block copolymer;
- and
- foaming the polysiloxane block copolymer to form a foam that has average pore sizes of less than or equal to about 100 nanometers.
4 more elements
Dependencies are inferred from the claim text.