A homogenous polymer composition useful as a membrane for biosensors is disclosed. The polymer composition comprises the reaction products of a diisocyanate, a hydrophilic diol or diamine, and a silicone material. An aliphatic diol or diamine may also be included. Membranes prepared from the composition...http://www.google.com.hk/patents/US5882494?utm_source=gb-gplus-share專利 US5882494 - Polyurethane/polyurea compositions containing silicone for biosensor membranes
