Patent ID: 8283390
Filing Date: 2012-10-09
Classification: C08J,C08L

Abstract:
1. 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 R 3 is the same and is independently a C 1-6 hydrocarbyl.