Increasing the particle size of synthetic rubber latices by freezing and thawing latices containing unreacted monomers

Claim 1

THE METHOD WHICH COMPRISES FREEZING A SYNTHETIC RUBBER LATEX, SAID SYNTHETIC RUBBER LATEX BEING AN EMULSION POLYMERIZATE OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON BUTADIENES-1,3 WITH UP TO 70% OF THE MIX TURES OF ARYL OLEFINES, SAID HYDROCARBON BUTADIENE-1,3 BEING SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-1,3, ISOPRENE, 2,3-DIMETHYL-BUTADIENE-1,3, AND PIPERLENE, AND SAID ARYL OLEFINES BEING SELECTED FROM THE GROUP CONSISTING OF STYRENE, ALPHA-METHYL STYRENE, VINYL TOLUENE, RING SUBSTITUTED MONOCHLOROSTYRENES AND RING SUBSTITUTED DICHLOROSTYRENES, THE EMULSION OF SAID MONOMERS BEFORE POLYMERIZATION CONTAINING 3 TO 10 PARTS OF WATER-SOLUBLE SOAP OF SOAP-FOAMING MONOCARBOXYLIC ACIDS HAVING 10 TO 20 CARBON ATOMS IN THE MOLECULE PER 100 PARTS OF SAID MONOMERS, SAID LATEX HAVING A CONCENTRATION OF SYNTHETIC RUBBER FROM 20% TO 45% AND CONTAINING 3 TO 100 PARTS OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF THE AFOREMENTIONED HYDROCARBON BUTADIENES-1,3 AND THE AFOREMENTIONED OLEFINES PER 100 PARTS OF SAID SYNTHETIC RUBBER, SAID LATEX BEING FROZEN AT A TEMPERATURE BETWEEN ITS FREEZING POINT AND -10*F. FOR A TIME SUFFICIENT TO COAGULATE THE LATEX, AND THEN THAWING SAID LATEX.

Claim 2

THE METHOD WHICH COMPRISES FREEZING A SYNTHETIC RUBBER LATEX, SAID SYNTHETIC RUBBER LATEX BEING AN EMULSION POLYMERIZATE OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON BUTADIENES-1,3 WITH UP TO 70% OF THE MIX TURES OF ARYL OLEFINES, SAID HYDROCARBON BUTADIENE-1,3 BEING SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-1,3, ISOPRENE, 2,3-DIMETHYL-BUTADIENE-1,3, AND PIPERLENE, AND SAID ARYL OLEFINES BEING SELECTED FROM THE GROUP CONSISTING OF STYRENE, ALPHA-METHYL STYRENE, VINYL TOLUENE, RING SUBSTITUTED MONOCHLOROSTYRENES AND RING SUBSTITUTED DICHLOROSTYRENES, THE EMULSION OF SAID MONOMERS BEFORE POLYMERIZATION CONTAINING 3 TO 10 PARTS OF WATER-SOLUBLE SOAP OF SOAP-FOAMING MONOCARBOXYLIC ACIDS HAVING 10 TO 20 CARBON ATOMS IN THE MOLECULE PER 100 PARTS OF SAID MONOMERS, SAID LATEX HAVING A CONCENTRATION OF SYNTHETIC RUBBER FROM 20% TO 45% AND CONTAINING 3 TO 100 PARTS OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF THE AFOREMENTIONED HYDROCARBON BUTADIENES-1,3 AND THE AFOREMENTIONED OLEFINES PER 100 PARTS OF SAID SYNTHETIC RUBBER, SAID LATEX BEING FROZEN AT A TEMPERATURE BETWEEN ITS FREEZING POINT AND -10*F. FOR A TIME SUFFICIENT TO COAGULATE THE LATEX, AND THEN THAWING SAID LATEX.