Classification opinions
… of polyurethane foams. Application of GIRs 1 and 6 Adoption : 1961 … 2. Polyols, having the character of … surfactants, obtained by the sequential addition of propylene and ethylene oxides to ethylenediamine, and used … of polyurethane foams. Application of GIRs 1 and 6 Adoption : 1961 …