Aqueous latices of high polymer compositions and means for producing same

Abstract

Abstract THE PREPARATION OF AQUEOUS LATICES FROM SLVENT DISPERSIONS OF ELASTOMERS AND OTHER HIGH POLYMER COMPOSITIONS HAS PRSENTED PROBLEMS INCLUDING FOAMING AND COAGULATION WHICH HAVE PRODUCED LOSES AND INCREASED COSTS. THEREIN COMBINATIONS OF STEPS ARE DISCLOSED WHICH REDUCE OR ELIMINATE VARIOUS OF THESE PROBLEMS; ENABLE THE PREPARATION OF LATICES FROM HIGH SLIDS, HIGH VISCOSITY CEMENTS; ENABLE PREPARATION OF LATICES OF FILLER EXTENDED AND FILLER REINFORCED ELASTOMERS; AND ENABLE THE PREPARATION OF LATICES BOTH DILUTE AND OF HIGH SOLIDS CONTENT, WHICH ARE USEFUL FOR EXAMPLE FOR ADHESIVE AND FILM FORMING PURPOSES. THE PROCESS IS PARTICULARLY CHARACTERIZEDM INTER ALIA, BY THE ESTABLISHMENT OF THE FLOW OF LATEX THROUGH THE SEPARATING ZONE AND THE IMPINGEMENT ON SAID FLOW OF THE COALESED LATEX DROPLETS FROM THE SOLVENT VAPOR STREAM IN WHICH THEY ARE DELIVERED TO THE SEPARATOR, AND IN CERTAIN EMBODIMENTS BY THE USE OF PARTICULAR EMULSIFIER COMBINATIONS. NEW COMBINATIONS OF APPARATUS ARE ALSO DISCLOSED AND CLAIMED FOR PERFORMING THE STEPS OF THE PROCESS. THE PROCESS SIDCLOSED IS APPLICABLE TO THE PRODUCTION OF LATICES FROM SPECIFIED RUBBERY AND NON-RUBBERY POLYMERS, WHICH MAY CONTAIN REINFORCING FILLER, AND CERTAIN OF SUCH LATICES ARE NEW AND USEFUL PRODUCTS ALSO CLAIMED HEREIN. D R A W I N G

Inventors

• 👤 O Burke

Bibliographic Details