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PULVERULENT RUBBERS COMPRISING CARBON BLACK FILLERS AND BASED ON RUBBERS PRESENT IN ORGANIC SOLVENTS, PROCESS FOR THEIR PREPARATION, AND APPLICATIONS
PULVERULENT RUBBERS COMPRISING CARBON BLACK FILLERS AND BASED ON RUBBERS PRESENT IN ORGANIC SOLVENTS, PROCESS FOR THEIR PREPARATION, AND APPLICATIONS
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机译:基于有机溶剂中存在的炭黑的粉状橡胶,包括碳黑填充剂,其制备方法和应用
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摘要
THE INVENTION RELATES TO A PROCESS FOR PREPARING FINE-PARTICLE FREE-FLOWING RUBBER POWDERS, COMPOSED OF CARBON BLACK FILLERS AND A RUBBER, PREPARED BY SOLUTION POLYMERIZATION. THE PROCESS OPERATES IN A TWO-PHASE SYSTEM AND TRANSFERS THE ORGANIC RUBBER PHASE IN A NON-AGGRESSIVE MANNER INTO THE INORGANIC FILLER SUSPENSION, WITHOUT ADDITION OF CHEMICALS, AND FORMS THE RUBBER/CARBON BLACK COMPOSITE, AND COMPRISES MEASURES TO BE TAKEN TO AVOID CLUMPING OF PRODUCT IN THE AQUEOUS PHASE. AFTER MECHANICAL WATER REMOVAL AND THERMAL DRYING, THE PRODUCTS ARE FREEFLOWABLE, STORAGE-STABLE POWDERS OR PELLETS AND ARE MARKEDLY SUPERIOR TO THE STANDARD BOTH IN THEIR PROCESSING AND IN THEIR RUBBER-TECHNOLOGY PROPERTY PROFILE.
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