There is provided a method of producing an open cell rigid polyurethane foam which comprises reacting a specified polyol mixture by use of water as the substantially sole blowing agent without the use of a volatile hlorofluorocarbon as a blowing agent. There is provided a further method of producing...http://www.google.es/patents/US5519068?utm_source=gb-gplus-sharePatente US5519068 - Method of producing open cell rigid polyurethane foam
Method of producing open cell rigid polyurethane foam
