| abstract |
A polyurethane composition comprising a chain extender including a silicon-containing diol of the formula (I):whereinR1, R2, R3, R4, R5, and R6 are the same or different and selected from an optionally substituted straight chain, branched or cyclic, saturated or unsaturated hydrocarbon radical;R7 is a divalent linking group or an optionally substituted straight chain, branched or cyclic, saturated or unsaturated hydrocarbon radical; andn is 0 or greater, preferably 2 or less. |