TRANSPARENT, STEAM-STEAMABLE, NON-CYTOTOXIC POLYURETHANE Potting compounds, PROCESS FOR THEIR PRODUCTION AND THEIR USE, IN PARTICULAR FOR MEDICAL-TECHNICAL ITEMS

摘要

A transparent steam sterilized non-cytotoxic polyurethane sealing compound obtained by reaction of (a) modified polyisocyanates with (b) compounds having at least two hydrogen atoms which can react with isocyanate groups, optionally in the presence of (c) catalysts. Under (a), modified diphenylmethane diisocyanate is used, of maximum viscosity 1500 mPa, as measured with a Haake Viscometer VT 500, and castor oil is used for the preparation of the diisocyanate and/or as component (b). An Independent claim is included for preparation of the sealing compound in accordance with (a) to (c) above.