Process for the preparation of hydrohalogenated rubber

Claim 1

A PROCESS FOR THE PREPARATION OF THE ADDITION PRODUCT OF RUBBER WITH A HYDROGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORIDE AND HYDROGEN BROMIDE, WHICH COMPRISES MIXING AN AQUEOUS DISPERSION OF A CONJUGATED DIOLEFIN RUBBER AND AN EMULSIFYING AGENT SELECTED FROM A CLASS CONSISTING OF NONIONIC AND CATIONIC SURFACE ACTIVE AGENTS AND WHICH IS CAPABLE, WHEN ADDED IN A CONCENTRATION OF UP TO 5 PER CENT BY WEIGHT TO A NATURAL RUBBER LATEX AT ROOM TEMPERATURES, OF PREVENTING VOAGULATION OF THE LATEX BY HCL WHEN THE LATER IS ADDED THERETO IN CONCENTRATIONS OFUP TO 10 PER CENT BY WEIGHT, THE QUANTITY OF EMULSIFYING AGENT BEING SUFICIENT TO RENDER THE LATEX NON-COAGULABLE WHEN SATURATED WITH HYDROGEN HALIDE, SATURATING THE AQUEOUS PHASE OF THE DISPERSION WITH ONE OF SAID HYDROGEN HALIDES, THEN REACTING THE LATEX WITH AN EXCESS OF THE SAME HYDROGEN HALIDE OVER THE AMOUNT REQUIRED TO SATURATED THE AQUEOUS PHASE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE THE DESIRED DEGREE OF HYDROHALOGENATION OF THE RUBBER AND RECOVERING THE RESULTING HYDROHALOENATED RUBBER.