Abstract 1. A PROCESS FOR PRODUCING POLYURETHANE MOLDINGS HAVING SURFACES FREE OF ADHESION INHIBITING MOLD RELEASE AGENT COMPRISING THE STEPS OF: (A) OVERCOATING A MOLD, WHICH HAS BEEN COATED WITH A HYDROPHOBIC MOLD-RELEASE AGENT, WITH A CONTINUOUS, SOLID BARRIER LAYER OF A WATER-SOLUBLE FILM FORMING (b) PASSING INTO THE MOLD A POLYURETHANE MOLDING (B) PASSING INTO THE MOLD A POLYURETHANE MOLDING COMPOSITION CONTAINING REACTIVE ISOCYANATE GROUPS, (C) POLYMERIZING SAID POLURETHANE MOLDING COMPOSITION IN CONTACT WITH SAID BARRIER LAYER MATERIAL CONTAINING A PLURALITY OF MOIETIES REACTIVE WITH ISOCYANATE GROUPS, (D) REMOVING THE RESULTANT MOLDING, AND (E) WASHING THE SURFACE OF SAID MOLDING WITH WATER TO SUBSTANTIALLY REMOVE SAID WATER-SOLUBLE BARRIER LAYER.
A PROCESS FOR PRODUCING POLYURETHANE MOLDINGS HAVING SURFACES FREE OF ADHESION INHIBITING MOLD RELEASE AGENT COMPRISING THE STEPS OF: (A) OVERCOATING A MOLD, WHICH HAS BEEN COATED WITH A HYDROPHOBIC MOLD-RELEASE AGENT, WITH A CONTINUOUS, SOLID BARRIER LAYER OF A WATER-SOLUBLE FILM FORMING (b) PASSING INTO THE MOLD A POLYURETHANE MOLDING (B) PASSING INTO THE MOLD A POLYURETHANE MOLDING COMPOSITION CONTAINING REACTIVE ISOCYANATE GROUPS, (C) POLYMERIZING SAID POLURETHANE MOLDING COMPOSITION IN CONTACT WITH SAID BARRIER LAYER MATERIAL CONTAINING A PLURALITY OF MOIETIES REACTIVE WITH ISOCYANATE GROUPS, (D) REMOVING THE RESULTANT MOLDING, AND (E) WASHING THE SURFACE OF SAID MOLDING WITH WATER TO SUBSTANTIALLY REMOVE SAID WATER-SOLUBLE BARRIER LAYER.
Claim 2
Dependent Claim
108 words
A PROCESS FOR PRODUCING POLYURETHANE MOLDINGS HAVING SURFACES FREE OF ADHESION INHIBITING MOLD RELEASE AGENT COMPRISING THE STEPS OF: (A) OVERCOATING A MOLD, WHICH HAS BEEN COATED WITH A HYDROPHOBIC MOLD-RELEASE AGENT, WITH A CONTINUOUS, SOLID BARRIER LAYER OF A WATER-SOLUBLE FILM FORMING (b) PASSING INTO THE MOLD A POLYURETHANE MOLDING (B) PASSING INTO THE MOLD A POLYURETHANE MOLDING COMPOSITION CONTAINING REACTIVE ISOCYANATE GROUPS, (C) POLYMERIZING SAID POLURETHANE MOLDING COMPOSITION IN CONTACT WITH SAID BARRIER LAYER MATERIAL CONTAINING A PLURALITY OF MOIETIES REACTIVE WITH ISOCYANATE GROUPS, (D) REMOVING THE RESULTANT MOLDING, AND (E) WASHING THE SURFACE OF SAID MOLDING WITH WATER TO SUBSTANTIALLY REMOVE SAID WATER-SOLUBLE BARRIER LAYER.