Foamed polyurethane having a marbleized appearance and process for making same

Claim 1

A PROCESS FOR THE PRODUCTION OF A MARBLEIZED MOLDED ARTICLE WHICH COMPRISES FORMING AN ESSENTIALLY UNIFORM, TERMINALLY-FOAMABLE MIXTURE CAPABLE OF SUBSEQUENT FINAL FOAMING INTO A POROUS STRUCTURE, SAID FOAMABLE MIXTURE COMPRISING A BLOWING AGENT, AN ORGANIC POLYISOCYANATE, AND AN ACTIVE HYDROGEN ORGANIC COMPOUND CAPABLE OF FORMING A POLYURETHANE STRUCTURE, SAID FOAMABLE MIXTURE COMPRISING A BLOWING AGENT, AN ORGANIC POLYISOCYANATE, AND AN ACTIVE HYDROGEN ORGANIC COMPOUND CAPABLE OF FORMING A POLYURETHANE STRUCTURE UPON REACTION WITH SAID POLYISOCYANATE, AND BEFORE SUBSTNATIAL TERMINAL FOAMING OF THE MIXTURE OCCURS, DISTRIBUTING UNEVENLY IN AT LEAST A PORTION OF THE FOAMABLE MIXTURE INSOLUBLE CONTRASTING PIGMENT IN A VEHICLE THEREFORE AND ADMITTING A QUANTITY OF THE RESULTING PIGMENTED MIXTURE INTO AN ENCLOSING MOLD, SAID QUANTITY BEING SUFFICIENT FOR GENERATING A RESULTING BODY OF FOAM THAT WILL EXERT SUBSTANTIAL POSITIVE PRESSURE OF ABOUT 2-35 P.S.I.G. ON ALL MOLD SURFACES, PERMITTING FOAMING AND CURING OF THE PIGMENTED MIXTURE IN THE MOLD UNDER THE PRESSURE EXERTED BY THE RESULTING BODY OF FOAM, THE FOAM GENERATION THEREBY DEVELOPING RANDOM PIGMENT STRIATIONS AND REMOVING FROM SAID MOLD A MOLDED ARTICLE OF SMOOTHLY MARBLEIZED APPEARANCE AND HAVING FOAMED INTE-/ RIOR STRUCTURE.