Sulfur vulcanizable rubber containing sodium thiosulfate pentahydrate

A method is disclosed for processing a rubber composition comprising thermomechanically mixing at a rubber temperature in a range of 140 DEG C. to 190 DEG C. for a mixing time of 1 to 20 minutes (i) 100 parts by weight of at least one sulfur vulcanizable elastomer selected from conjugated diene homo...

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Bibliographische Detailangaben
Hauptverfasser:	FUTAMURA, SHINGO, ZANZIG, DAVID J, D'SIDOCKY, RICHARD M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS RELATED TO TYRES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS TYRE CHANGING OR REPAIRING TYRE INFLATION USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A method is disclosed for processing a rubber composition comprising thermomechanically mixing at a rubber temperature in a range of 140 DEG C. to 190 DEG C. for a mixing time of 1 to 20 minutes (i) 100 parts by weight of at least one sulfur vulcanizable elastomer selected from conjugated diene homopolymers and copolymers, natural rubber and copolymers of at least one conjugated diene and aromatic vinyl compound; (ii) 10 to 250 phr of particulate precipitated silica; (iii) 0.01 to 1.0 parts by weight per weight of said silica of an organosilicon compound; and (iv) 0.05 to 10 phr of sodium thiosulfate pentahydrate. Addition of the sodium thiosulfate pentahydrate to sulfur vulcanizable rubber, silica and sulfur containing organosilicon compound decreases the mixing/processing time without sacrificing end product properties.