ECOLOGICAL FOAMING AGENT FOR POLYURETHANE RESINS, PARTICULARY FOR THE PRODUCTION OF RIGID FOAMED PARTS

摘要

The use of a water alcohol solution mixed with perchloroethylene as foaming agent for the production of foamed polyurethane is disclosed. Particularly described is the use of an alcoholic distillate mixed with perchloroethylene. The alcoholic content of the solution and the distillate is between 30 and 90 degrees. Also the amounts of such agent to be used in the mixture are indicated as parts by weight with respect to the current components.