Method of making freely flowable rubber compositions

Claim 1

A METHOD OF PREPARING A FREELY FLOWABLE RUBBER COMPOSITION CONSISTING ESSENTIALLY OF A HOMOGENEOUS TWOPHASE LIQUID MASS CONTAINING AS ITS SOLE RUBBERY INGREDIENTS TWO CLASSES OF RUBBERY ELASTIC POLYMERS, EACH CLASS HAVING DIFFERENT SOLUBILITY CHARACTERISTICS IN THE SAME SOLVENT AND A VOLATILE ORGANIC LIQUID WHICH IS A SOLVENT FOR ONE CLASS OF SAID POLYMERS AND A NON-SOLVENT FOR THE OTHER CLASS THEREOF, ONE CLASS OF SAID POLYMERS BEING DISSOLVED IN THE SOLVENT FORMING A SOLUTION WHICH COMPRISES THE EXTERNAL PHASE AND THE OTHER CLASS BEING DISPERSED AS FINE UNDISSOLVED PARTICLES IN SAID SOLUTION WHICH COMPRISES THE INTERNAL PHASE, COMPRISING THE STEPS OF: INTIMATELY MIXING A LATEX OF SAID SOLUBLE CLASS OF RUBBERY POLYMER WITH A LATEX OF SAID INSOLUBLE CLASS OF RUBBERY POLYMER; THE LATICES BEING MIXED IN A PROPORTION SUFFICIENT TO PROVIDE A WEIGHT RATIO OF SAID SOLUBLE CLASS OF RUBBERY POLYMER TO INSOLUBLE CLASS OF RUBBERY POLYMER OF AT LEAST ABOUT 1.5; COAGULATING SAID RUBBERY POLYMERS FROM SAID MIXED LATICES TO FORM A HOMOGENEOUS RUBBERY COAGULUM OF SAID SOLVENT SOLUBLE AND SAID SOLVENT INSOLUBLE POLYMERS IN SAID WEIGHT RATIO; SUBJECTING SAID COAGULUM TO NONMASTICATING AGITATION IN THE PRESENCE OF SAID ORGANIC LIQUID UNTIL THE SOLUBLE RUBBER IS DISSOLVED IN THE ORGANIC LIQUID AND THE INSOLUBLE RUBBER IS DISRUPTED AND DISPERSED IN THE FORM OF FINE DISCRETE PARTICLES SUSPENDED IN THE SOLUTION OF THE SOLUBLE RUBBER.

Claim 2

A METHOD OF PREPARING A FREELY FLOWABLE RUBBER COMPOSITION CONSISTING ESSENTIALLY OF A HOMOGENEOUS TWOPHASE LIQUID MASS CONTAINING AS ITS SOLE RUBBERY INGREDIENTS TWO CLASSES OF RUBBERY ELASTIC POLYMERS, EACH CLASS HAVING DIFFERENT SOLUBILITY CHARACTERISTICS IN THE SAME SOLVENT AND A VOLATILE ORGANIC LIQUID WHICH IS A SOLVENT FOR ONE CLASS OF SAID POLYMERS AND A NON-SOLVENT FOR THE OTHER CLASS THEREOF, ONE CLASS OF SAID POLYMERS BEING DISSOLVED IN THE SOLVENT FORMING A SOLUTION WHICH COMPRISES THE EXTERNAL PHASE AND THE OTHER CLASS BEING DISPERSED AS FINE UNDISSOLVED PARTICLES IN SAID SOLUTION WHICH COMPRISES THE INTERNAL PHASE, COMPRISING THE STEPS OF: INTIMATELY MIXING A LATEX OF SAID SOLUBLE CLASS OF RUBBERY POLYMER WITH A LATEX OF SAID INSOLUBLE CLASS OF RUBBERY POLYMER; THE LATICES BEING MIXED IN A PROPORTION SUFFICIENT TO PROVIDE A WEIGHT RATIO OF SAID SOLUBLE CLASS OF RUBBERY POLYMER TO INSOLUBLE CLASS OF RUBBERY POLYMER OF AT LEAST ABOUT 1.5; COAGULATING SAID RUBBERY POLYMERS FROM SAID MIXED LATICES TO FORM A HOMOGENEOUS RUBBERY COAGULUM OF SAID SOLVENT SOLUBLE AND SAID SOLVENT INSOLUBLE POLYMERS IN SAID WEIGHT RATIO; SUBJECTING SAID COAGULUM TO NONMASTICATING AGITATION IN THE PRESENCE OF SAID ORGANIC LIQUID UNTIL THE SOLUBLE RUBBER IS DISSOLVED IN THE ORGANIC LIQUID AND THE INSOLUBLE RUBBER IS DISRUPTED AND DISPERSED IN THE FORM OF FINE DISCRETE PARTICLES SUSPENDED IN THE SOLUTION OF THE SOLUBLE RUBBER.