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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Bibliographic Details
Main Author TIMOTHY A. OKEL
Format Patent
LanguagePortuguese
Published 16.02.2016
Subjects
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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Summary: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.
Bibliography:Application Number: BR2010PI07614