sílica precipitada, composição de elastômero, vulcanizado tendo uma carga para reforço, pneu de estrada e processo para preparar sílica precipitada microporosa

Described herein is microporous precipitated silica having the following physico-chemical parameters: a CTAB surface area of 50 to 300 square meters/gram, a BET/CTAB ratio of 1.3, and a relative breadth γ of pore size distribution of 3.5. The precipitated silica can also have a Sears number of from...

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Bibliographische Detailangaben
1. Verfasser:	TIMOTHY A. OKEL
Format:	Patent
Sprache:	por
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS THEREOF DEVICES OR ARRANGEMENTS RELATED TO TYRES INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING 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:	Described herein is microporous precipitated silica having the following physico-chemical parameters: a CTAB surface area of 50 to 300 square meters/gram, a BET/CTAB ratio of 1.3, and a relative breadth γ of pore size distribution of 3.5. The precipitated silica can also have a Sears number of from 10 to 28 and a Sears number/CTAB ratio of 0.16. Also described herein are vulcanizable and vulcanized elastomer compositions, e.g., tires, containing the microporous precipitated silica.